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  1. MariaDB Server
  2. MDEV-28999

Mariabackup SST fails with Bullseye Upgrade

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    Details

    • Type: Bug
    • Status: Needs Feedback (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 10.5.16
    • Fix Version/s: None
    • Component/s: Galera SST, mariabackup
    • Labels:
      None
    • Environment:
      Custom Debian Bullseye Docker container on Debian Bullseye host OS.

      Description

      Server version: 10.5.16-MariaDB-1:10.5.16+maria~bullseye-log



      An upgrade from 10.5.16-MariaDB-1:10.5.16+maria~buster-log to 10.5.16-MariaDB-1:10.5.16+maria~bullseye-log (buster to bullseye move) breaks mariabackup SST. The attempt to bootstrap a new cluster and adding another node to the cluster gives the below error on the joiner 


      Jun 27 16:56:51 2022-06-27 16:56:51 1 [ERROR] WSREP: Failed to prepare for 'mariabackup' SST. Unrecoverable.
      Jun 27 16:56:51 2022-06-27 16:56:51 1 [ERROR] WSREP: SST request callback failed. This is unrecoverable, restart required.
      

      
In the donor node’s syslog, below error is seen:


      E Failed to set SNI host ""


      

      Further investigation revealed that socat 1.7.4 (recently updated in Debian bullseye) defaults to using Server Name Indication (SNI) which breaks epoptes use of socat (https://github.com/epoptes/epoptes/issues/127) leading to failure of mariabackup SST on Bullseye.

 We resolved the issue by adding the no-sni option to the wsrep_sst_mariabackup script.

      if [ $encrypt -lt 2 ]; then
                  if [ "$WSREP_SST_OPT_ROLE" = 'joiner' ]; then
                      tcmd="socat -u TCP-LISTEN:$SST_PORT,reuseaddr$sockopt stdio"
                  else
                      tcmd="socat -u stdio TCP:$REMOTEIP:$SST_PORT$sockopt,no-sni=1"
                  fi
                  return
              fi
      

      In the hope that it may help others in the community, we're opening this bug report.

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            Assignee:
            jplindst Jan Lindström
            Reporter:
            pjain Prachi Jain
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              Dates

              Created:
              Updated:

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