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Changing IP address post fog install is problematic

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  • G
    george1421 Moderator @Wayne Workman
    last edited by george1421 Dec 23, 2015, 1:18 PM Dec 23, 2015, 6:49 PM

    @Wayne-Workman

    Some other things I just thought of while walking about.

    How does dhcp lease time come into play in regards to script execution. Especially if this will be a cron job. Consider what is a shortest duration lease and a typical duration lease time.

    should the physical location of this script be location in a fog related directory like /opt/fog/utils?

    Is there any way to trap an interface going up/down and then to call your script? hint: http://www.cyberciti.biz/tips/how-do-i-run-firewall-script-as-soon-as-eth0-interface-brings-up.html

    Does the interface go down and then up on a dhcp renewal.

    We would assume that the path statement points correctly for bash to run without full paths on the called applications especially if they are system type applications.

    Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

    W 2 Replies Last reply Dec 23, 2015, 6:55 PM Reply Quote 0
    • W
      Wayne Workman @george1421
      last edited by Dec 23, 2015, 6:55 PM

      @george1421 My thought was just to setup a cron job that runs every 5 minutes.

      If the actual IP is the same as what’s in .fogsettings then nothing is done - and to find that out, it’s not much resources used.

      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
      Daily Clean Installation Results:
      https://fogtesting.fogproject.us/
      FOG Reporting:
      https://fog-external-reporting-results.fogproject.us/

      1 Reply Last reply Reply Quote 0
      • M
        mrayzies
        last edited by Dec 23, 2015, 7:31 PM

        @Wayne-Workman
        I think there should be an option in .fogsettings to skip this altogether, not because of system resources, but occasionally I might want to poke at the system (e.g. add a temporary VIP for testing something else) and unless the coding is air-tight, it might kick off some horrible changes.

        W 1 Reply Last reply Dec 23, 2015, 7:38 PM Reply Quote 0
        • W
          Wayne Workman @mrayzies
          last edited by Wayne Workman Dec 23, 2015, 1:39 PM Dec 23, 2015, 7:38 PM

          @mrayzies Are you talking about the cron job? We can add a simple setting into the .fogsettings file like keepIPupdated="1" / "0"

          What I’m working on is a total custom thing - it’ll likely never be implemented into FOG Trunk officially.

          Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
          Daily Clean Installation Results:
          https://fogtesting.fogproject.us/
          FOG Reporting:
          https://fog-external-reporting-results.fogproject.us/

          1 Reply Last reply Reply Quote 0
          • M
            mrayzies
            last edited by Dec 23, 2015, 7:43 PM

            I was talking about the CRON job.

            And OK – sorry to barge in on the conversation.

            W 1 Reply Last reply Dec 23, 2015, 9:04 PM Reply Quote 0
            • W
              Wayne Workman @mrayzies
              last edited by Dec 23, 2015, 9:04 PM

              @mrayzies By all means, give your thoughts and even contribute. 🙂 FOG is a community project.

              Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
              Daily Clean Installation Results:
              https://fogtesting.fogproject.us/
              FOG Reporting:
              https://fog-external-reporting-results.fogproject.us/

              1 Reply Last reply Reply Quote 1
              • W
                Wayne Workman @george1421
                last edited by Wayne Workman Dec 23, 2015, 5:49 PM Dec 23, 2015, 11:37 PM

                @george1421 This script should knock your socks right off.

                It dynamically finds the paths for all the called programs by searching through the directories in $PATH. The result is CRON friendly commands that are easy to type. 🙂

                Still 100% untested, I’ve not even run this script myself yet.

                #---- Notes ----#
                
                # This script is for changing the FOG Server's IP address and configure dnsmasq automatically.
                
                # Thanks to forums.fogproject.org @sudburr for doing a ton of initial work.
                
                # Updated by forums.fogproject.org @Wayne-Workman
                
                # This is an early copy, stay tuned for updates.
                
                # December 23th, 2015.
                
                
                
                
                #---- Set Command Paths ----#
                
                ( IFS=:
                  for p in $PATH; do
                
                        #Get grep path
                        if [[ -f $p/grep ]]; then
                                grep=$p/grep
                        fi
                
                        #Get awk path
                        if [[ -f $p/awk ]]; then
                                awk=$p/awk
                        fi
                
                        #Get cut path
                        if [[ -f $p/cut ]]; then
                                cut=$p/cut
                        fi
                
                        #Get ip path
                        if [[ -f $p/ip ]]; then
                                ip=$p/ip
                        fi
                
                        #Get sed path
                        if [[ -f $p/sed ]]; then
                                sed=$p/sed
                        fi
                
                        #Get mysql path
                        if [[ -f $p/mysql ]]; then
                                mysql=$p/mysql
                        fi
                
                        #Get cp path
                        if [[ -f $p/cp ]]; then
                                cp=$p/cp
                        fi
                
                  done
                )
                
                
                #---- Get interface name and last IP from .fogsettings ---#
                
                interface="$($grep 'interface=' /opt/fog/.fogsettings | $awk -F'"' '{$0=$2}1')"
                fogsettingsIP="$($grep 'ipaddress=' /opt/fog/.fogsettings | $awk -F'"' '{$0=$2}1')"
                
                
                #---- Wait for an IP address ----#
                
                IP=`$ip addr list ${interface} | $grep "inet " |$cut -d" " -f6|$cut -d/ -f1`
                
                while [ -z $IP ]
                
                do
                    sleep 5
                    IP=`$ip addr list ${interface} | $grep "inet " |$cut -d" " -f6|$cut -d/ -f1`
                done
                
                
                
                
                if [[ "$IP" != "$fogsettingsIP" ]]; then
                #If the actual IP doesn't match the .fogsettings IP
                
                        #Update .fogsettings IP
                        $sed -i "s|ipaddress=\".*\"|ipaddress=\"$IP\"|" /opt/fog/.fogsettings
                
                        #Get MySQL credentials
                        snmysqluser="$($grep 'snmysqluser=' /opt/fog/.fogsettings | $awk -F'"' '{$0=$2}1')"
                        snmysqlpass="$($grep 'snmysqlpass=' /opt/fog/.fogsettings | $cut -d \' -f2 )"
                
                        #---- SQL ----#
                
                        #These are the SQL statements to run against the DB
                        statement1="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_TFTP_HOST';"
                        statement2="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_WOL_HOST';"
                        statement3="UPDATE \`nfsGroupMembers\` SET \`ngmHostname\` = '$IP' WHERE \`ngmMemberName\` ='DefaultMember';"
                
                        if [ "$snmysqlpass" != "" ]; then
                                #If there is a password set
                                $mysql --user=$snmysqluser --password=$snmysqlpass --database='fog'  << EOF
                                $statement1
                                $statement2
                                $statement3
                                EOF
                
                        elif [ "$snmysqluser != "" ]; then
                                #If there is a user set but no password
                                $mysql --user $snmysqluser --database='fog' << EOF
                                $statement1
                                $statement2
                                $statement3
                                EOF
                
                        else
                                #If there is no user or password set
                                $mysql --database='fog' << EOF
                                $statement1
                                $statement2
                                $statement3
                                EOF
                
                        fi
                
                
                        #Updating IP address in file default.ipxe
                        $sed -i "s|http://\([^/]\+\)/|http://$IP/|" /tftpboot/default.ipxe
                        $sed -i "s|http:///|http://$IP/|" /tftpboot/default.ipxe
                
                
                        #---- Backup config.class.php and then updae IP ----#
                        $cp -f /var/www/html/fog/lib/fog/config.class.php /var/www/html/fog/lib/fog/config.class.php.old
                        $sed -i "s|\".*\..*\..*\..*\"|\$_SERVER['SERVER_ADDR']|" /var/www/html/fog/lib/fog/config.class.php
                
                
                
                fi
                

                Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
                Daily Clean Installation Results:
                https://fogtesting.fogproject.us/
                FOG Reporting:
                https://fog-external-reporting-results.fogproject.us/

                1 Reply Last reply Reply Quote 0
                • W
                  Wayne Workman
                  last edited by Wayne Workman Dec 23, 2015, 8:20 PM Dec 24, 2015, 2:18 AM

                  This changes all fog settings and the “defaultmember” storage node to whatever the current IP of the fog server is. I’ve tested it, it works.

                  I’ve added extensive fail-safes as @george1421 was talking about - if anything isn’t right, it just quits.

                  I’ll work on adding dnsmasq now and the earlier check to run the cron event or not from @mrayzies

                  #---- Notes ----#
                  
                  # This script is for changing the FOG Server's IP address and configure dnsmasq automatically.
                  # It's intended to run as a cron event every 5 minutes, should work fine on Red Hat and RH variants. 
                  # Thanks to forums.fogproject.org @sudburr for doing a ton of initial work.
                  # Updated by forums.fogproject.org @Wayne-Workman
                  # Version 4.
                  
                  
                  #check for .fogsettings existence, if it isn't there, exit the script.
                  if ! [[ -f /opt/fog/.fogsettings ]]; then
                          exit
                  fi
                  
                  #---- Set Command Paths ----#
                  
                  #Store previous contents of IFS.
                  previousIFS=$IFS
                  
                  IFS=:
                    for p in $PATH; do
                  
                          #Get grep path
                          if [[ -f $p/grep ]]; then
                                  grep=$p/grep
                          fi
                  
                          #Get awk path
                          if [[ -f $p/awk ]]; then
                                  awk=$p/awk
                          fi
                  
                          #Get cut path
                          if [[ -f $p/cut ]]; then
                                  cut=$p/cut
                          fi
                  
                          #Get ip path
                          if [[ -f $p/ip ]]; then
                                  ip=$p/ip
                          fi
                  
                          #Get sed path
                          if [[ -f $p/sed ]]; then
                                  sed=$p/sed
                          fi
                  
                          #Get mysql path
                          if [[ -f $p/mysql ]]; then
                                  mysql=$p/mysql
                          fi
                  
                          #Get cp path
                          if [[ -f $p/cp ]]; then
                                  cp=$p/cp
                          fi
                  
                    done
                  
                  #Restore previous contents of IFS
                  IFS=$previousIFS
                  
                  #If any command variables don't have content, exit the script.
                  if ! [[ -z $grep ]] && [[ -z $awk ]] && [[ -z $cut ]] && [[ -z $ip ]] && [[ -z $sed ]] && [[ -z $mysql ]] && [[ -z $cp ]]; then
                          exit
                  fi
                  
                  #---- Get interface name and last IP from .fogsettings ---#
                  
                  interface="$($grep 'interface=' /opt/fog/.fogsettings | $awk -F'"' '{$0=$2}1')"
                  fogsettingsIP="$($grep 'ipaddress=' /opt/fog/.fogsettings | $awk -F'"' '{$0=$2}1')"
                  
                  #If there isn't an interface and IP set in .fogsettings, exit the script.
                  if ! [[ -z $interface ]] && [[ -z $fogsettingsIP ]]; then
                          exit
                  fi
                  
                  
                  #---- Wait for an IP address ----#
                  
                  IP=`$ip addr list ${interface} | $grep "inet " |$cut -d" " -f6|$cut -d/ -f1`
                  
                  while [ -z $IP ]
                  
                  do
                      sleep 5
                      IP=`$ip addr list ${interface} | $grep "inet " |$cut -d" " -f6|$cut -d/ -f1`
                  done
                  
                  
                  
                  if [[ "$IP" != "$fogsettingsIP" ]]; then
                  #If the interface IP doesn't match the .fogsettings IP, do the below.
                  
                          #---- SQL ----#
                  
                          snmysqluser="$($grep 'snmysqluser=' /opt/fog/.fogsettings | $awk -F'"' '{$0=$2}1')"
                          snmysqlpass="$($grep 'snmysqlpass=' /opt/fog/.fogsettings | $cut -d \' -f2 )"
                  
                          #These are the SQL statements to run against the DB
                          statement1="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_TFTP_HOST';"
                          statement2="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_WOL_HOST';"
                          statement3="UPDATE \`nfsGroupMembers\` SET \`ngmHostname\` = '$IP' WHERE \`ngmMemberName\` ='DefaultMember';"
                          statement4="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_WEB_HOST';"
                  
                  
                          #This builds the proper MySQL Connection Statement.
                          if [ "$snmysqlpass" != "" ]; then
                                  #If there is a password set
                                  $mysql --user=$snmysqluser --password=$snmysqlpass --database='fog' -e "$statement1$statement2$statement3$statement4"
                  
                          elif [ "$snmysqluser" != "" ]; then
                                  #If there is a user set but no password
                                  $mysql --user $snmysqluser --database='fog' -e "$statement1$statement2$statement3$statement4"
                  
                          else
                                  #If there is no user or password set
                                  $mysql --database='fog' -e "$statement1$statement2$statement3$statement4"
                          fi
                  
                          #---- Update IP address in file default.ipxe ----#
                  
                          $sed -i "s|http://\([^/]\+\)/|http://$IP/|" /tftpboot/default.ipxe
                          $sed -i "s|http:///|http://$IP/|" /tftpboot/default.ipxe
                  
                  
                          #---- Backup config.class.php and then updae IP ----#
                  
                          $cp -f /var/www/html/fog/lib/fog/config.class.php /var/www/html/fog/lib/fog/config.class.php.old
                          $sed -i "s|\".*\..*\..*\..*\"|\$_SERVER['SERVER_ADDR']|" /var/www/html/fog/lib/fog/config.class.php
                  
                          #---- Update .fogsettings IP ----#
                  
                          $sed -i "s|ipaddress=\".*\"|ipaddress=\"$IP\"|" /opt/fog/.fogsettings
                  
                  fi
                  

                  Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
                  Daily Clean Installation Results:
                  https://fogtesting.fogproject.us/
                  FOG Reporting:
                  https://fog-external-reporting-results.fogproject.us/

                  1 Reply Last reply Reply Quote 0
                  • W
                    Wayne Workman
                    last edited by Dec 24, 2015, 5:34 AM

                    Version 5. This one will build the dnsmasq config file.

                    #---- Notes ----#
                    
                    # This script is for changing the FOG Server's IP address and configure dnsmasq automatically.
                    # It's intended to run as a cron event every 5 minutes, should work fine on Red Hat and RH variants. 
                    # Thanks to forums.fogproject.org @sudburr for doing a ton of initial work.
                    # Updated by forums.fogproject.org @Wayne-Workman
                    # Version 5.
                    # If you want to use dnsmasq, you must first set this up as a cron script to run every so oftne (every 5 minutes)
                    # And add dnsmasq to the packages list inside /opt/fog/.fogsettings
                    # and when "dodnsmasq" and "bldnsmasq" show up (after script's first run), set those to 1 or whatever you prefer.
                    #
                    # the final "undionly" line still needs fixed to be created from the bootfile variable in the ltsp.conf file.
                    
                    fogsettings=/opt/fog/.fogsettings
                    
                    
                    #check for .fogsettings existence, if it isn't there, exit the script.
                    if ! [[ -f $fogsettings ]]; then
                            exit
                    fi
                    
                    #---- Set Command Paths ----#
                    
                    #Store previous contents of IFS.
                    previousIFS=$IFS
                    
                    IFS=:
                      for p in $PATH; do
                    
                            #Get grep path
                            if [[ -f $p/grep ]]; then
                                    grep=$p/grep
                            fi
                    
                            #Get awk path
                            if [[ -f $p/awk ]]; then
                                    awk=$p/awk
                            fi
                    
                            #Get cut path
                            if [[ -f $p/cut ]]; then
                                    cut=$p/cut
                            fi
                    
                            #Get ip path
                            if [[ -f $p/ip ]]; then
                                    ip=$p/ip
                            fi
                    
                            #Get sed path
                            if [[ -f $p/sed ]]; then
                                    sed=$p/sed
                            fi
                    
                            #Get mysql path
                            if [[ -f $p/mysql ]]; then
                                    mysql=$p/mysql
                            fi
                    
                            #Get cp path
                            if [[ -f $p/cp ]]; then
                                    cp=$p/cp
                            fi
                    
                            #Get echo path
                            if [[ -f $p/echo ]]; then
                                    echo=$p/echo
                            fi
                    
                            #Get mv path
                            if [[ -f $p/mv ]]; then
                                    mv=$p/mv
                            fi
                    
                            #Get rm path
                            if [[ -f $p/rm ]]; then
                                    rm=$p/rm
                            fi
                    
                            #Get systemctl path
                            if [[ -f $p/systemctl ]]; then
                                    systemctl=$p/systemctl
                            fi
                    
                      done
                    
                    #Restore previous contents of IFS
                    IFS=$previousIFS
                    
                    #If any command variables don't have content, exit the script.
                    if ! [[ -z $grep ]] && [[ -z $awk ]] && [[ -z $cut ]] && [[ -z $ip ]] && [[ -z $sed ]] && [[ -z $mysql ]] && [[ -z $cp ]] && [[ -z $echo ]] && [[ -z $mv ]] && [[ -z $rm ]] && [[ -z $systemctl ]]; then
                            exit
                    fi
                    
                    #---- Get interface name and last IP from .fogsettings ---#
                    
                    interface="$($grep 'interface=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                    fogsettingsIP="$($grep 'ipaddress=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                    
                    #If there isn't an interface and IP set in .fogsettings, exit the script.
                    if ! [[ -z $interface ]] && [[ -z $fogsettingsIP ]]; then
                            exit
                    fi
                    
                    
                    #---- Wait for an IP address ----#
                    
                    IP=`$ip addr list ${interface} | $grep "inet " |$cut -d" " -f6|$cut -d/ -f1`
                    
                    while [ -z $IP ]
                    
                    do
                        sleep 5
                        IP=`$ip addr list ${interface} | $grep "inet " |$cut -d" " -f6|$cut -d/ -f1`
                    done
                    
                    
                    
                    if [[ "$IP" != "$fogsettingsIP" ]]; then
                    #If the interface IP doesn't match the .fogsettings IP, do the below.
                    
                            #---- SQL ----#
                    
                            snmysqluser="$($grep 'snmysqluser=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                            snmysqlpass="$($grep 'snmysqlpass=' $fogsettings | $cut -d \' -f2 )"
                    
                            #These are the SQL statements to run against the DB
                            statement1="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_TFTP_HOST';"
                            statement2="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_WOL_HOST';"
                            statement3="UPDATE \`nfsGroupMembers\` SET \`ngmHostname\` = '$IP' WHERE \`ngmMemberName\` ='DefaultMember';"
                            statement4="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_WEB_HOST';"
                    
                    
                            #This puts all the statements into one variable. If you add more statments above, add the extra ones to this too.
                            sqlStatements=$statement1$statement2$statement3$statement4
                    
                    
                            #This builds the proper MySQL Connection Statement.
                            if [ "$snmysqlpass" != "" ]; then
                                    #If there is a password set
                                    $mysql --user=$snmysqluser --password=$snmysqlpass --database='fog' -e "$sqlStatements"
                    
                            elif [ "$snmysqluser" != "" ]; then
                                    #If there is a user set but no password
                                    $mysql --user $snmysqluser --database='fog' -e "$sqlStatements"
                    
                            else
                                    #If there is no user or password set
                                    $mysql --database='fog' -e "$sqlStatements"
                            fi
                    
                            #---- Update IP address in file default.ipxe ----#
                    
                            $sed -i "s|http://\([^/]\+\)/|http://$IP/|" /tftpboot/default.ipxe
                            $sed -i "s|http:///|http://$IP/|" /tftpboot/default.ipxe
                    
                    
                            #---- Backup config.class.php and then updae IP ----#
                    
                            $cp -f /var/www/html/fog/lib/fog/config.class.php /var/www/html/fog/lib/fog/config.class.php.old
                            $sed -i "s|\".*\..*\..*\..*\"|\$_SERVER['SERVER_ADDR']|" /var/www/html/fog/lib/fog/config.class.php
                    
                            #---- Update .fogsettings IP ----#
                    
                            $sed -i "s|ipaddress=\".*\"|ipaddress=\"$IP\"|" $fogsettings
                    
                    
                            #Check if the dodnsmasq setting exists in fog settings. If not, create it and set it to false.
                            if ! $grep -q dodnsmasq "$fogsettings"; then
                                    #Remove any blank lines at the end of fogsettings, then rewrite file.
                                    $sed -e :a -e '/^\n*$/{$d;N;};/\n$/ba' $fogsettings > $fogsettings.new
                                    $mv $fogsettings.new $fogsettings
                                    #Add dodnsmasq setting.
                                    $echo dodnsmasq="\""0"\"" >> $fogsettings
                                    #Add a blank line at the end of fogsettings.
                                    $echo "" >> $fogsettings
                            fi
                    
                    
                            #Check if the bldnsmasq setting exists in fog settings. If no, create it and set it to false.
                            if ! grep -q bldnsmasq "$fogsettings"; then
                                    #Remove any blank lines at the end of fogsettings, then rewrite file.
                                    $sed -e :a -e '/^\n*$/{$d;N;};/\n$/ba' $fogsettings > $fogsettings.new
                                    $mv $fogsettings.new $fogsettings
                                    #Add bldnsmasq setting.
                                    $echo bldnsmasq="\""0"\"" >> $fogsettings
                                    #Add a blank line at the end of fogsettings.
                                    $echo "" >> $fogsettings
                            fi
                    
                    
                            #Read the dodnsmasq and bldnsmasq settings.
                            dodnsmasq="$($grep 'dodnsmasq=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                            bldnsmasq="$($grep 'bldnsmasq=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                    
                            #If either of the dnsmasq fogsettings are empty, exit the script.
                            if ! [[ -z dodnsmasq ]] && [[ -z bldnsmasq ]]; then
                                    exit
                            fi
                    
                            #If bldnsmasq is seto as 1, build the config file.
                            if [[ "$bldnsmasq" == "1" ]]; then
                    
                                    #set the ltsp.conf path.
                                    ltsp=/etc/dnsmasq.d/ltsp.conf
                    
                                    #Read what boot file is set in fogsettings, use that in ltsp.conf
                                    bootfilename="$($grep 'bootfilename=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                    
                                    #If bootfilename is blank, set it to undionly.kkpxe
                                    if [[ -z "$bootfilename" ]]; then
                                            bootfilename=undionly.kkpxe
                                    fi
                    
                                    #Check for existence of the bootfile copy ".0" file. If it exists, delete it and recreate it.
                                    bootfileCopy="${bootfilename%.*}.0"
                                    if [[ -f $bootfileCopy ]]; then
                                            $rm -f $bootfileCopy
                                    fi
                                    $cp /tftpboot/$bootfilename /tftpboot/$bootfileCopy
                    
                    
                                    #this config overwrites anything in ltsp.conf because "bldnsmasq" was set to 1.
                                    $echo port=0 > $ltsp
                                    $echo log-dhcp >> $ltsp
                                    $echo tftp-root=/tftpboot >> $ltsp
                                    $echo dhcp-boot=$bootfileCopy,$IP,$IP >> $ltsp
                                    $echo dhcp-option=17,/images >> $ltsp
                                    $echo dhcp-option=vendor:PXEClient,6,2b >> $ltsp
                                    $echo dhcp-no-override >> $ltsp
                                    $echo pxe-prompt="Press F8 for boot menu", 3 >> $ltsp
                                    $echo pxe-service=X86PC, “Boot from network”, undionly >> $ltsp
                                    $echo pxe-service=X86PC, "Boot from local hard disk", 0 >> $ltsp
                                    $echo dhcp-range=$IP,proxy >> $ltsp
                    
                            fi
                    
                    
                    
                            #if dodnsmasq is set to 1, restart and enable dnsmasq. ELSE disable and stop.
                            if [[ "$dodnsmasq" == "1" ]]; then
                                    $systemctl enable dnsmasq
                                    $systemctl restart dnsmasq
                            else
                                    $systemctl disable dnsmasq
                                    $systemctl stop dnsmasq
                            fi
                    
                    
                    fi
                    

                    Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
                    Daily Clean Installation Results:
                    https://fogtesting.fogproject.us/
                    FOG Reporting:
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                    1 Reply Last reply Reply Quote 0
                    • Wayne WorkmanW
                      Wayne Workman
                      last edited by Wayne Workman Dec 24, 2015, 3:04 PM Dec 24, 2015, 8:39 PM

                      This one provides messages, and outputs them to a log file. It also creates it’s own settings file instead of storing settings inside of .fogsettings.

                      The web directory work is also dynamically based on the settings in .fogsettings

                      bldnsmasq now defaults to 1 if it’s not previously set - this only makes sense to build the correct file if it doesn’t exist, that way if the user wants to start up dnsmasq, they can just simply start it.

                      I’ve also fixed some minor errors. I’ve tested this only on CentOS 7 - seems to be working good.

                      Given that dnsmasq has been added to the /opt/fog/.fogsettings “productlist”, and is installed, and this script is named: /opt/fog/utils/updateIP.sh and made executable, and a root crontab event is made such as */5 * * * * /opt/fog/utils/updateIP.sh or */3 * * * * /opt/fog/utils/updateIP.sh (every 5 minutes, or every 3 minutes)

                      Then this will keep you’re fog server and it’s “defaultmember” storage node’s IP addresses totally up to date.
                      And - if you’re using the dodnsmasq and bldnsmasq settings, it’ll keep those updated with the right IP as well. With those set and this script running via Cron - you have a 100% Mobile FOG Server that auto-configures itself every time it’s IP changes.

                      This still needs further polishing, like a installer and uninstaller, a readme and a GNU GPL license attached. I’ll also make it into a sourceforge project too.

                      #---- Notes ----#
                      
                      # This script is for changing the FOG Server's IP address and configure dnsmasq automatically.
                      # It's intended to run as a root  cron event every 5 minutes, should work fine on Red Hat and RH variants. 
                      # Thanks to forums.fogproject.org @sudburr for doing a ton of initial work.
                      # Thanks to forums.fogproject.org @george1421 for continually providing feedback.
                      # Updated by forums.fogproject.org @Wayne-Workman
                      # Version 6.
                      
                      #Fog settings location.
                      fogsettings=/opt/fog/.fogsettings
                      
                      #Custom settings location.
                      customfogsettings=/opt/fog/.customfogsettings
                      
                      #Log for this script, to store messages and such in.
                      log=/opt/fog/log/updateIP.log
                      
                      
                      #---- Set Command Paths ----#
                      
                      #Store previous contents of IFS.
                      previousIFS=$IFS
                      
                      IFS=:
                        for p in $PATH; do
                      
                              #Get grep path
                              if [[ -f $p/grep ]]; then
                                      grep=$p/grep
                              fi
                      
                              #Get awk path
                              if [[ -f $p/awk ]]; then
                                      awk=$p/awk
                              fi
                      
                              #Get cut path
                              if [[ -f $p/cut ]]; then
                                      cut=$p/cut
                              fi
                      
                              #Get ip path
                              if [[ -f $p/ip ]]; then
                                      ip=$p/ip
                              fi
                      
                              #Get sed path
                              if [[ -f $p/sed ]]; then
                                      sed=$p/sed
                              fi
                      
                              #Get mysql path
                              if [[ -f $p/mysql ]]; then
                                      mysql=$p/mysql
                              fi
                      
                              #Get cp path
                              if [[ -f $p/cp ]]; then
                                      cp=$p/cp
                              fi
                      
                              #Get echo path
                              if [[ -f $p/echo ]]; then
                                      echo=$p/echo
                              fi
                      
                              #Get mv path
                              if [[ -f $p/mv ]]; then
                                      mv=$p/mv
                              fi
                      
                              #Get rm path
                              if [[ -f $p/rm ]]; then
                                      rm=$p/rm
                              fi
                      
                              #Get systemctl path
                              if [[ -f $p/systemctl ]]; then
                                      systemctl=$p/systemctl
                              fi
                      
                              #Get date path
                              if [[ -f $p/date ]]; then
                                      date=$p/date
                              fi
                      
                        done
                      
                      #Restore previous contents of IFS
                      IFS=$previousIFS
                      
                      
                      #---- Check contents of command variables ----#
                      
                      if [[ -z $echo ]]; then
                              echo The path for grep was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $grep ]]; then
                              $echo The path for grep was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $awk ]]; then
                              $echo The path for awk was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $cut ]]; then
                              $echo The path for cut was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $ip ]]; then
                              $echo The path for ip was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $sed ]]; then
                              $echo The path for sed was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $mysql ]]; then
                              $echo The path for mysql was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $cp ]]; then
                              $echo The path for cp was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $mv ]]; then
                              $echo The path for mv was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $rm ]]; then
                              $echo The path for rm was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $systemctl ]]; then
                              $echo The path for systemctl was not found, exiting. >> $log
                              exit
                      fi
                      
                      if [[ -z $date ]]; then
                              $echo The path for date was not found, exiting. >> $log
                              exit
                      fi
                      
                      
                      
                      #Record the date.
                      NOW=$($date +"%m-%d-%Y")
                      $echo -------------------- >> $log
                      $echo $NOW >> $log
                      $echo -------------------- >> $log
                      
                      
                      
                      #check for .fogsettings existence, if it isn't there, exit the script.
                      if ! [[ -f $fogsettings ]]; then
                              $echo The file $fogsettings does not exist, exiting. >> $log
                              exit
                      fi
                      
                      
                      
                      #---- Get interface name and last IP from .fogsettings ---#
                      
                      interface="$($grep 'interface=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                      fogsettingsIP="$($grep 'ipaddress=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                      
                      #Check if the interface setting is good.
                      if [[ -z $interface ]]; then
                              $echo The interface setting inside $fogsettings either doesn't exist or isn't as expected, exiting. >> $log
                              exit
                      fi
                      
                      #Check if the ipaddress setting is good.
                      if [[ -z $fogsettingsIP ]]; then
                              $echo The ipaddress setting inside $fogsettings either doesn't exist or isn't as expected, exiting. >> $log
                              exit
                      fi
                      
                      
                      
                      #---- Wait for an IP address ----#
                      
                      IP=`$ip addr list ${interface} | $grep "inet " |$cut -d" " -f6|$cut -d/ -f1`
                      
                      while [[ -z $IP ]]
                      
                      do
                              $echo The IP address for $interface was not found, waiting 5 seconds. >> $log
                              sleep 5
                              IP=`$ip addr list ${interface} | $grep "inet " |$cut -d" " -f6|$cut -d/ -f1`
                      done
                      
                      
                      
                      
                      if [[ "$IP" != "$fogsettingsIP" ]]; then
                      #If the interface IP doesn't match the .fogsettings IP, do the below.
                      
                      
                              #-------------- Update the IP settings --------------#
                      
                              $echo The IP address for $interface does not match the ipaddress setting in $fogsettings, updating the IP Settings server-wide. >> $log
                      
                              #---- SQL ----#
                      
                              snmysqluser="$($grep 'snmysqluser=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                              snmysqlpass="$($grep 'snmysqlpass=' $fogsettings | $cut -d \' -f2 )"
                      
                              #These are the SQL statements to run against the DB
                              statement1="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_TFTP_HOST';"
                              statement2="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_WOL_HOST';"
                              statement3="UPDATE \`nfsGroupMembers\` SET \`ngmHostname\` = '$IP' WHERE \`ngmMemberName\` ='DefaultMember';"
                              statement4="UPDATE \`globalSettings\` SET \`settingValue\` = '$IP' WHERE \`settingKey\` ='FOG_WEB_HOST';"
                      
                      
                              #This puts all the statements into one variable. If you add more statments above, add the extra ones to this too.
                              sqlStatements=$statement1$statement2$statement3$statement4
                      
                      
                              #This builds the proper MySQL Connection Statement and runs it.
                              if [ "$snmysqlpass" != "" ]; then
                                      #If there is a password set
                                      $echo A password was set for snmysqlpass in $fogsettings, using the password. >> $log
                                      $mysql --user=$snmysqluser --password=$snmysqlpass --database='fog' -e "$sqlStatements"
                      
                              elif [ "$snmysqluser" != "" ]; then
                                      #If there is a user set but no password
                                      $echo A username was set for snmysqluser in $fogsettings, but no password was found. Using the username. >> $log
                                      $mysql --user $snmysqluser --database='fog' -e "$sqlStatements"
                      
                              else
                                      $echo There was no username or password set for the database in $fogsettings, trying without credentials. >> $log
                                      #If there is no user or password set
                                      $mysql --database='fog' -e "$sqlStatements"
                              fi
                      
                      
                      
                              #---- Update IP address in file default.ipxe ----#
                      
                              $echo Updating the IP in /tftpboot/default.ipxe >> $log
                              $sed -i "s|http://\([^/]\+\)/|http://$IP/|" /tftpboot/default.ipxe
                              $sed -i "s|http:///|http://$IP/|" /tftpboot/default.ipxe
                      
                      
                              #---- Backup config.class.php and then updae IP ----#
                      
                              #read the docroot and webroot settings.
                              docroot="$($grep 'docroot=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                              webroot="$($grep 'webroot=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                      
                      
                              #check if docroot is blank.
                              if [[ -z $docroot ]]; then
                                      $echo There is no docroot set inside $fogsettings exiting the script. >> $log
                                      exit
                              fi
                      
                              #check if webroot is blank.
                              if [[ -z $webroot ]]; then
                                      $echo There is no webroot set inside $fogsettings exiting the script. >> $log
                                      exit
                              fi
                      
                      
                      
                              $echo Backing up ${docroot}$webroot'lib/fog/config.class.php' >> $log
                              $cp -f ${docroot}$webroot'lib/fog/config.class.php' ${docroot}$webroot'lib/fog/config.class.php.old'
                      
                              $echo Updating the IP inside ${docroot}$webroot'lib/fog/config.class.php' >> $log
                              $sed -i "s|\".*\..*\..*\..*\"|\$_SERVER['SERVER_ADDR']|" ${docroot}$webroot'lib/fog/config.class.php'
                      
                              #---- Update .fogsettings IP ----#
                      
                              $echo Updating the ipaddress field inside of $fogsettings >> $log
                              $sed -i "s|ipaddress=\".*\"|ipaddress=\"$IP\"|" $fogsettings
                      
                      
                              #check if customfogsettings exists, if not, create it.
                              if [[ ! -f $customfogsettings ]]; then
                                      $echo $customfogsettings was not found, creating it. >> $log
                                      touch $customfogsettings
                              fi
                      
                      
                              #Check if the dodnsmasq setting exists in $customfogsettings If not, create it and set it to false.
                              if ! $grep -q dodnsmasq "$customfogsettings"; then
                                      $echo The dodnsmasq setting was not found in $customfogsettings, adding it. >> $log
                                      #Remove any blank lines at the end of customfogsettings, then rewrite file.
                                      $sed -e :a -e '/^\n*$/{$d;N;};/\n$/ba' $customfogsettings > $customfogsettings.new
                                      $mv $customfogsettings.new $customfogsettings
                                      #Add dodnsmasq setting.
                                      $echo dodnsmasq="\""0"\"" >> $customfogsettings
                                      #Add a blank line at the end of customfogsettings.
                                      $echo "" >> $customfogsettings
                              fi
                      
                      
                              #Check if the bldnsmasq setting exists in $customfogsettings. If not, create it and set it to true.
                              if ! grep -q bldnsmasq "$customfogsettings"; then
                                      $echo The bldnsmasq setting was not found in $customfogsettings, adding it. >> $log
                                      #Remove any blank lines at the end of customfogsettings, then rewrite file.
                                      $sed -e :a -e '/^\n*$/{$d;N;};/\n$/ba' $customfogsettings > $customfogsettings.new
                                      $mv $customfogsettings.new $customfogsettings
                                      #Add bldnsmasq setting.
                                      $echo bldnsmasq="\""1"\"" >> $customfogsettings
                                      #Add a blank line at the end of customfogsettings.
                                      $echo "" >> $customfogsettings
                              fi
                      
                      
                              #Read the dodnsmasq and bldnsmasq settings.
                              dodnsmasq="$($grep 'dodnsmasq=' $customfogsettings | $awk -F'"' '{$0=$2}1')"
                              bldnsmasq="$($grep 'bldnsmasq=' $customfogsettings | $awk -F'"' '{$0=$2}1')"
                      
                              #If either of the dnsmasq fogsettings are empty, exit the script.
                              if [[ -z dodnsmasq ]]; then
                                      $echo The dodnsmasq setting in $customfogsettings either doesn't exist or isn't as expected, exiting the script. >> $log
                                      exit
                              fi
                      
                              if [[ -z bldnsmasq ]]; then
                                      $echo The bldnsmasq setting in $customfogsettings either doesn't exist or isn't as expected, exiting the script. >> $log
                                      exit
                              fi
                      
                              #If bldnsmasq is seto as 1, build the config file.
                              if [[ "$bldnsmasq" == "1" ]]; then
                      
                                      #set the ltsp.conf path.
                                      ltsp=/etc/dnsmasq.d/ltsp.conf
                      
                                      $echo bldnsmasq inside $customfogsettings was set to 1, recreating $ltsp >> $log
                      
                                      #Read what boot file is set in fogsettings, use that in ltsp.conf
                                      bootfilename="$($grep 'bootfilename=' $fogsettings | $awk -F'"' '{$0=$2}1')"
                      
                                      #If bootfilename is blank, set it to undionly.kkpxe
                                      if [[ -z "$bootfilename" ]]; then
                                              $echo The bootfilename setting inside of $fogsettings is either doesn't exist or isn't as expected, defaulting to undionly.kkpxe >> $log
                                              bootfilename=undionly.kkpxe
                                      fi
                      
                                      #Check for existence of the bootfile copy ".0" file. If it exists, delete it and recreate it.
                                      bootfileCopy="${bootfilename%.*}.0"
                                      if [[ -f $bootfileCopy ]]; then
                                              $echo $bootfileCopy was found, deleting it. >> $log
                                              $rm -f $bootfileCopy
                                      fi
                                      $echo Copying /tftpboot/$bootfilename to /tftpboot/$bootfileCopy for dnsmasq to use. >> $log
                                      $cp /tftpboot/$bootfilename /tftpboot/$bootfileCopy
                      
                      
                                      #this config overwrites anything in ltsp.conf because "bldnsmasq" was set to 1.
                      
                                      $echo Recreating $ltsp for use with dnsmasq. >> $log
                                      $echo port=0 > $ltsp
                                      $echo log-dhcp >> $ltsp
                                      $echo tftp-root=/tftpboot >> $ltsp
                                      $echo dhcp-boot=$bootfileCopy,$IP,$IP >> $ltsp
                                      $echo dhcp-option=17,/images >> $ltsp
                                      $echo dhcp-option=vendor:PXEClient,6,2b >> $ltsp
                                      $echo dhcp-no-override >> $ltsp
                                      $echo pxe-prompt="Press F8 for boot menu", 1 >> $ltsp
                                      $echo pxe-service=X86PC, “Boot from network”, undionly >> $ltsp
                                      $echo pxe-service=X86PC, "Boot from local hard disk", 0 >> $ltsp
                                      $echo dhcp-range=$IP,proxy >> $ltsp
                      
                              fi
                      
                      
                      
                              #if dodnsmasq is set to 1, restart and enable dnsmasq. ELSE disable and stop.
                              if [[ "$dodnsmasq" == "1" ]]; then
                                      $echo dodnsmasq was set to 1 inside of $customfogsettings - starting it and enabling it to run at boot. >> $log
                                      $echo You may manually set this to 0 if you like, and manually stop and disable dnsmasq with these commands: >> $log
                                      $echo systemctl disable dnsmasq >> $log
                                      $echo systemctl stop dnsmasq >> $log
                                      $systemctl enable dnsmasq
                                      $systemctl restart dnsmasq
                              else
                                      $echo dodnsmasq was set to 0 inside of $customfogsettings - stopping it and disabling it from running at boot. >> $log
                                      $echo You may manually set this to 1 if you like, and manually start and enable dnsmasq with these commands: >> $log
                                      $echo systemctl enable dnsmasq >> $log
                                      $echo systemctl restart dnsmasq >> $log
                                      $systemctl disable dnsmasq
                                      $systemctl stop dnsmasq
                      
                              fi
                      
                      else
                              $echo The IP address found on $interface matches the IP set in $fogsettings, assuming all is good, exiting. >> $log
                              exit
                      fi
                      

                      Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
                      Daily Clean Installation Results:
                      https://fogtesting.fogproject.us/
                      FOG Reporting:
                      https://fog-external-reporting-results.fogproject.us/

                      george1421G 1 Reply Last reply Dec 24, 2015, 10:19 PM Reply Quote 1
                      • george1421G
                        george1421 Moderator @Wayne Workman
                        last edited by Dec 24, 2015, 10:19 PM

                        @Wayne-Workman Very nice job. I’ll be sure to test this out on both Centos 7 and 6.5 after the holiday. But overall this looks great. It checks all of the boxes on the wish list.

                        Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!

                        Wayne WorkmanW 1 Reply Last reply Dec 27, 2015, 5:30 AM Reply Quote 1
                        • Wayne WorkmanW
                          Wayne Workman @george1421
                          last edited by Dec 27, 2015, 5:30 AM

                          @george1421 Thanks. I hope it’ll get the job done.

                          Here’s the latest copy: https://sourceforge.net/p/fogupdateip/code/HEAD/tree/

                          And this is how you’d check out using svn:

                          svn checkout svn://svn.code.sf.net/p/fogupdateip/code/ /svn/fogupdateip
                          

                          I’ve fixed an issue there that had to do with the PATH variable - and I’ve made an installer and attached the GPL 3.0 license.

                          Of course it can be improved further by being made more efficient and better organized and with wider range of OS support, but right now it’s 100% complete for Fedora 23 and CentOS 7.

                          Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
                          Daily Clean Installation Results:
                          https://fogtesting.fogproject.us/
                          FOG Reporting:
                          https://fog-external-reporting-results.fogproject.us/

                          1 Reply Last reply Reply Quote 0
                          • Wayne WorkmanW
                            Wayne Workman @george1421
                            last edited by Jan 19, 2016, 4:42 AM

                            @george1421 said:

                            @Tom-Elliott The probably the easiest solution is to create a procedure (wiki page) that if you need to update your fog server you need to do:

                            1. Update the settings in the /opt/fog/.fogsettings
                            2. Rerun the installer
                            3. Update the IP address for the storage node on the FOG system where you changed the IP address
                            4. Update the IP address on a any master storage node that may reference this FOG server
                            5. Update the FOG_WEB_HOST value
                            6. update the FOG_TFTP_HOST value

                            I can I’ll marked this as addressed (Solved), since its not a technical solution but a procedural one that resolves the issue.
                            [Edit] I would, but it appears I can no longer mark topics as solved[/Edit]

                            Added here: https://wiki.fogproject.org/wiki/index.php?title=Change_FOG_Server_IP_Address

                            Please help us build the FOG community with everyone involved. It's not just about coding - way more we need people to test things, update documentation and most importantly work on uniting the community of people enjoying and working on FOG!
                            Daily Clean Installation Results:
                            https://fogtesting.fogproject.us/
                            FOG Reporting:
                            https://fog-external-reporting-results.fogproject.us/

                            1 Reply Last reply Reply Quote 1
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