Can not deploy using multicast - read image_hdr block_size error



  • Server
    • FOG Version: 1.3 - RC- 13 - 5962rev
    • OS: CentOS 7
    Client
    • Service Version: 0.11.5
    • OS: Windows 10/CentOS 7
    Description

    I am trying to do a deploy using multicast, i have created my image and all is fine if i use ‘unicast’.
    But when i try multicast, i can not deploy and partclone shows an error (sorry, i have no image from screen):

    read image_hdr block_size error
    

    and at the bottom, after partclone screen:

    .... exit with code 0 (writeImage)           
    args passed /images/mytest/d1p1.img* /dev/sda1 yes
    ..
    your computer will reboot in 1 minute
    

    Following multicast troubleshoot from wiki, multicast works like expected, so the problem would be my image?
    My image settings:

    Image Name	mytest
    Operating System	Linux - (50) (but is dual boot system)
    Image Path	/images/mytest
    Image Type	Single Disk - Resizable - (1)
    Partition	Everything - (1)
    Compression	6
    Image Enabled	y
    Replicate?	y
    

    What i have to do to make this work?
    Thanks



  • For further clarification to future readers of this thread, the specific commands to allow the necessary ports for Multicast can be found in the CentOS 7 wiki article, linked below.
    https://wiki.fogproject.org/wiki/index.php?title=CentOS_7



  • @Wayne-Workman, @Quazz
    Firewalld was disabled when testing, but enabled at production…
    My mistake!!!
    I did not open 49152 to 65532/udp ports in my firewall.
    Thanks to all Fog team!


  • Moderator

    Multicast comes with its own set of requirements to work properly.

    Try going through the tests on the wiki.

    https://wiki.fogproject.org/wiki/index.php?title=Troubleshooting_a_multicast

    Additionally, check Multicast settings under FOG Configuration, make sure the interface is correct amongst other things.



  • @Thiago Did you specify a port when you did the test or no? Is CentOS 7 firewalld configured? You can check by running systemctl status firewalld



  • This is the first time that i try this.
    sending .fogsettings using udp-sender/udp-receiver worked.
    and this error (read image_hdr block_size error) happens on all images when multicasting.



  • Has multicast with fog ever worked for you?


 

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