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[QFX] How to backup MYSQL DB on Qfabric DG



Article ID: KB37035 KB Last Updated: 04 Jun 2021Version: 2.0

This article explains how to perform a MYSQL DB backup on a Qfabric. This can be done any time before any of the activities like NSSU, DG replacement or a fresh implementation.

  1. Check if MySQL service is running on DG. MySQL runs on Primary DG:

    [root@dg1 ~]# clustat
    Cluster Status for sfc_pb_cluster @ Fri May 21 06:57:22 2021
    Member Status: Quorate

     Member Name                             ID   Status
     ------ ----                             ---- ------
     dg0                                         1 Online, rgmanager
     dg1                                         2 Online, Local, rgmanager

     Service Name                   Owner (Last)                   State         
     ------- ----                   ----- ------                   -----         
     dcfservice:dcf_svc             dg1                            started   >>>>> indicates mysql is running on dg1     
     service:pbccif_svc0            dg0                            started       
     service:pbccif_svc1            dg1                            started       
     service:pbgfs_svc0             dg0                            started       
     service:pbgfs_svc1             dg1                            started       
     service:pblb_dhcp_svc0         dg0                            started       
     service:pblb_dhcp_svc1         dg1                            started       
     service:pbnfs_svc0             dg0                            started       
     service:pbnfs_svc1             dg1                            started        
  2. Rename MySQL script to disable auto-start:

    [root@dg1 ~]# ls -lah /opt/dcf/scripts/*mysql-5.5.28 
    -rwxr-xr-x 1 root 13K Aug 28  2020 /opt/dcf/scripts/mysql-5.5.28*

    [root@dg1 ~]# date;mv /opt/dcf/scripts/mysql-5.5.28 /opt/dcf/scripts/0mysql-5.5.28
    Wed Apr  7 16:19:05 UTC 2021

    [root@dg1 ~]# ls -lah /opt/dcf/scripts/*mysql-5.5.28
    -rwxr-xr-x 1 root 13K Aug 28  2020 /opt/dcf/scripts/0mysql-5.5.28* 
  3. Stop MySQL service:

    [root@dg1 ~]# date; /opt/dcf/scripts/0mysql-5.5.28 stop
    Wed Apr  7 16:22:06 UTC 2021
    Shutting down MySQL.... SUCCESS! 
  4. Take a backup of MySQL data directory and store it on the local primary DG directory:

    [root@dg1 ~]# ls -lah /pbdata/usr/ 
    total 12K
    drwxr-xr-x  3 root  3.8K Apr  6 10:27 ./
    drwxr-xr-x 14 root  3.8K Apr  7 16:17 ../
    drwxr-xr-x 13 mysql 3.8K Oct  1  2012 mysql-5.5.28/

    [root@dg1 ~]# date;rm -rf /mysql-backup 
    [root@dg1 ~]# date;mkdir /mysql-backup 
    Wed Apr  7 16:24:41 UTC 2021

    [root@dg1# date; tar -zcvf /mysql-backup/data.tgz /pbdata/usr/mysql-5.5.28/data 
    Wed Apr  7 16:25:47 UTC 2021
    tar: Removing leading `/' from member names

    [root@dg1# ls -lah /mysql-backup/
    total 94M
    drwxr-xr-x  2 root 4.0K Apr  7 19:16 ./
    drwxr-xr-x 32 root 4.0K Apr  7 19:16 ../
    -rw-r--r--  1 root  94M Apr  7 19:17 data.tgz
  5. Start MySQL service:

    [root@dg1 ~]#  date; /opt/dcf/scripts/0mysql-5.5.28 start 
    Wed Apr  7 16:31:19 UTC 2021
    Starting MySQL.. SUCCESS! 
  6. Rename MySQL script to the original name:

    [root@dg1 ~]# date;mv /opt/dcf/scripts/0mysql-5.5.28 /opt/dcf/scripts/mysql-5.5.28
    Wed Apr  7 16:32:52 UTC 2021

    [root@dg1 ~]# ls -lah /opt/dcf/scripts/*mysql-5.5.28
    -rwxr-xr-x 1 root 13K Aug 28  2020 /opt/dcf/scripts/mysql-5.5.28*

    [root@dg1 ~]# service mysql status
     SUCCESS! MySQL running (8031)

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