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Sysadmin A yum update causes kernel not to load after reboot

Discussion in 'System Administration' started by andybond, Mar 23, 2018.

  1. andybond

    andybond New Member

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    Please fill in any relevant information that applies to you:
    • CentOS Version: CentOS 7 64bit
    • Centmin Mod Version Installed: i123.09beta01
    • Nginx Version Installed: 1.1.3
    • PHP Version Installed: 7.2.1
    • MariaDB MySQL Version Installed: 10.2
    • When was last time updated Centmin Mod code base ? : Today ( 22 MAR 18 )
    • Persistent Config: N/A
    Periodically I run centmin mode code base update and noted that a particular update was made available once I had updated ; remi-release-7.4-2.el7.remi.noarch

    I followed the yum instructions as specified on the very helpful screen and proceeded to reboot the server.

    It never came back up .

    No errors were / are flagged , just a flashing cursor and nothing loaded. I had to revert to second to last updated kernel.

    Any ideas ? Be gentle , centminmod / linux n00b here !
     
  2. eva2000

    eva2000 Administrator Staff Member

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    Nginx 1.15.x
    MariaDB 5.5/10.x
    server specs/hardware and web host ?

    contacted web host's tech support ?
     
  3. andybond

    andybond New Member

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    Its a VM.

    Its me managing the VM , I have full access. Webhost is unsure on why its failing to update. Last kernel is working fine.
     
  4. eva2000

    eva2000 Administrator Staff Member

    36,055
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    Nginx 1.15.x
    MariaDB 5.5/10.x
    Without any specific info, your web host would be the folks who best know your server configuration and how it's setup to diagnose this.
     
  5. Peter Nehem

    Peter Nehem It hates everything I try to type here Premium Member

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    Nov 22, 2017
    Tucson, Arizona USA
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    1.15.0
    MariaDB 10.1.34
    @andybond I had trouble with kernel-ml-4.16.14? Damn I tried to go back and look but I guess I didn't make a note of which one. It was so bad my local machines were crawling and the two remote servers I couldn't connect. I downgraded the local computers and the 2 servers and didn't upgrade until 4.17.0 and then slowly.
     
    • Informative Informative x 1
  6. andybond

    andybond New Member

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    Worth knowing , thanks.

    I ma still looking into reasons it works / doesnt. I think it might be a redhat VM limitation.

    Will solve it and have a look at what you said @Peter Nehem. Thanks for the advice.
     
    • Like Like x 1
  7. andybond

    andybond New Member

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    This "fault" was stemming from Xenserver 6.5 incompatibility.

    Host upgraded to a much later one and issues have gone and the kernel will update ( in fact , just done one ! ) without any issue
     
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