How to pxe boot cent os 7

[Tom Elliott]

Also may be useful to see the exact command you’re typing now.

[dureal99d]

@Tom-Elliott sudo mount 192.168.1.109:/opt/bootimgs/fedora /mnt

[dureal99d]

@Tom-Elliott no, i didnt know i had to, but will try it

[dureal99d]

@Tom-Elliott said in How to pxe boot cent os 7:

exportfs -a

exportfs: /etc/exports [3]: Neither ‘subtree_check’ or ‘no_subtree_check’ specified for export “*:/var/www/fog/service/ipxe”.
Assuming default behaviour (‘no_subtree_check’).
NOTE: this default has changed since nfs-utils version 1.0.x

exportfs: /etc/exports [4]: Neither ‘subtree_check’ or ‘no_subtree_check’ specified for export “*:/opt/bootimgs/fedora”.
Assuming default behaviour (‘no_subtree_check’).
NOTE: this default has changed since nfs-utils version 1.0.x

[Tom Elliott]

@dureal99d those messages are fine
Any luck mounting now?

[dureal99d]

@Tom-Elliott said in How to pxe boot cent os 7:

@dureal99d those messages are fine
Any luck mounting now?

No luck

[Tom Elliott]

@dureal99d can you post your exports file again?

[dureal99d]

@Tom-Elliott said in How to pxe boot cent os 7:

@dureal99d can you post your exports file again?

/images *(ro,sync,no_wdelay,no_subtree_check,insecure_locks,no_root_squash,insecure,fsid=0)
/images/dev *(rw,async,no_wdelay,no_subtree_check,no_root_squash,insecure,fsid=1)
/var/www/fog/service/ipxe *(ro,sync,no_wdelay,insecure_locks,no_root_squash,insecure)
/opt/bootimgs *(ro,sync,no_wdelay,insecure_locks,no_root_squash,insecure)

[Tom Elliott]

@dureal99d That’s the issue you can’t mount a full path. Only mount up to the bootimgs folder.

Instead of:
mount 192.168.1.109:/opt/bootimgs/fedora /mnt use :
mount 192.168.1.109:/opt/bootimgs /mnt

[dureal99d]

This post is deleted!

[dureal99d]

@Tom-Elliott said in How to pxe boot cent os 7:

mount 192.168.1.109:/opt/bootimgs /mnt

mount: wrong fs type, bad option, bad superblock on 192.168.1.109:/opt/bootimgs,
missing codepage or helper program, or other error
(for several filesystems (e.g. nfs, cifs) you might
need a /sbin/mount.<type> helper program)

   In some cases useful info is found in syslog - try
   dmesg | tail or so.

[Tom Elliott]

@dureal99d and output of dmesg | tail -20?

[dureal99d]

@Tom-Elliott said in How to pxe boot cent os 7:

dmesg | tail -20

[ 8605.032191] nfsd: last server has exited, flushing export cache
[ 8605.178847] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[ 8605.179097] NFSD: starting 90-second grace period (net ffffffff81ef3ec0)
[177245.456195] nfsd: last server has exited, flushing export cache
[177245.571541] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[177245.571572] NFSD: starting 90-second grace period (net ffffffff81ef3ec0)
[504820.256179] nfsd: last server has exited, flushing export cache
[504820.379183] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[504820.379211] NFSD: starting 90-second grace period (net ffffffff81ef3ec0)
[505766.396169] nfsd: last server has exited, flushing export cache
[505766.443252] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[505766.443281] NFSD: starting 90-second grace period (net ffffffff81ef3ec0)
[512189.424200] nfsd: last server has exited, flushing export cache
[512189.469462] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
[512189.469507] NFSD: starting 90-second grace period (net ffffffff81ef3ec0)
[512652.019883] FS-Cache: Loaded
[512652.045276] FS-Cache: Netfs ‘nfs’ registered for caching
[512652.087294] NFS: Registering the id_resolver key type
[512652.087309] Key type id_resolver registered
[512652.087310] Key type id_legacy registered

[dureal99d]

@Tom-Elliott Should i be trying to mount this share locally or on another machine?

[Tom Elliott]

@dureal99d you could try readding the -t nfs

[Tom Elliott]

@Tom-Elliott also can you run yum -y install portmap nfs-utils nfs4-acl-tools

[dureal99d]

@Tom-Elliott yum doesn’t apply to me I’m on Ubuntu 16.04.1. it does offer for me to install it should I? @Tom-Elliott I have installed yum. and am executing the program you have told me too.

[dureal99d]

@Wayne-Workman said in How to pxe boot cent os 7:

@dureal99d The syntax is:

ln -s <source> <destination>

You should remove the left/right carrots when running the command.
If all the ISOs are in /opt/bootimgs the command would be:
ln -s /opt/bootimgs /var/www/html

Of course, apache needs access to this new directory also. It’s fine to set ownership of /opt/bootimgs to apache:root or 777 or something.

And your resultant web path to these files would then be:
http://<IP>/bootimgs/whatever

How would I give apache permissions to the new folder?

I set the folder as chmod 777 and can now write into the folder on the local machine. but when I try to load any distro I now get the dreaded permissions denied on nfs mount. and the nfs is exported.

[dureal99d]

@Tom-Elliott I have successfully mounted the nfs on my remote machine. on my other linux machine i did not have the nfs system installed once i did wala it mounted. however i cant write to it its read only. and when i boot the linux ditro it all goes good utill its time to mount the nfs then i get a permissions denied error

[Sebastian Roth]

@dureal99d If you want to make it writeable you need to say so in the NFS exports file:

/images *(ro,sync,no_wdelay,no_subtree_check,insecure_locks,no_root_squash,insecure,fsid=0)
/images/dev *(rw,async,no_wdelay,no_subtree_check,no_root_squash,insecure,fsid=1)
/var/www/fog/service/ipxe *(ro,sync,no_wdelay,insecure_locks,no_root_squash,insecure)
/opt/bootimgs *(rw,sync,no_wdelay,insecure_locks,no_root_squash,insecure)

See I put rw where it said ro in the config you posted last.

Can you please post a picture of the permissions error you see on boot?