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      • PostgreSQL Daily backup automated shell script

      PostgreSQL Daily backup automated shell script

      • Posted by bushra.rayafeel
      • Categories Blog
      • Date May 28, 2022
      • Comments 0 comment

      this script will take the postgresql base backup based on  daily changes (if you scheduled daily) &  it will delete the old backup if backup  retention period is reached 2 days. you can call this as postgresql incremental  backup Script  because this Script is taking backup of changes only  means it is taking archive and XLOG files only. If postgresql instance is crashed means you can recover the data by using point​ in time recovery.

      cat /home/script/Postgres_backup.sh
      #!/bin/bash
      
      PGDATA=/data/
      PGHOME=/opt/PostgreSQL/9.3/bin
      HOT=/backup
      WAL_LOC=/archive/
      LOG=/home/script/script_logs
      TODAY=$(date +"%m-%d-%Y")
      
      /opt/PostgreSQL/9.3/bin/psql -X -U postgres -h localhost -c 'select now() as "Online Backup Start Time";' >> $LOG/backupinfo_$TODAY.log
      
      /opt/PostgreSQL/9.3/bin/psql -X -U postgres -h localhost -c  "select setting from pg_settings where name='data_directory'; " >> $LOG/backupinfo_$TODAY.log
      
      #psql -U postgres -c " select pg_switch_xlog(); " >> $LOG/backupinfo_$TODAY.log
      
      ## Adding Checkpoint for consistent backup
      
      echo "CHECKPOINT;
      SELECT pg_start_backup('Full Backup');
      -- Making Sure all in WAL is archived after checkpoint
      
      select pg_switch_xlog();"|/opt/PostgreSQL/9.3/bin/psql -X -U postgres -h localhost >> $LOG/backupinfo_$TODAY.log
      
      tar -cvzf $HOT/onlinebackup_$TODAY.tar.gz $PGDATA/* >> $LOG/backupinfo_$TODAY.log
      
      tar --remove-files -cvzf $HOT/arch_$TODAY.tar $WAL_LOC/* >> $LOG/backupinfo_$TODAY.log
      
      /opt/PostgreSQL/9.3/bin/psql -X -U postgres  -h localhost -c " select pg_stop_backup(); " >> $LOG/backupinfo_$TODAY.log
      
      ## Archiving all transaction in Mid of Backup
      
      /opt/PostgreSQL/9.3/bin/psql -X -U postgres -h localhost -c "select pg_switch_xlog();" >> $LOG/backupinfo_$TODAY.log
      
      /opt/PostgreSQL/9.3/bin/psql -X -U postgres -h localhost -c 'select now() as "Online Backup End Time";' >> $LOG/backupinfo_$TODAY.log
      
      # Online Backup file Retention policy will be 2 day's
      
      find /backup -name "onlinebackup_*.tar.gz" -mtime +2 -exec ls -l {} \; >> $LOG/backupinfo_$TODAY.log
      
      find /backup -name "onlinebackup_*.tar.gz" -mtime +2 -exec rm -r {} \;
      
      # Archive Backup file Retention policy will be 2 day's
      
      find /backup -name "arch_*.tar" -mtime +2 -exec ls -l {} \; >> $LOG/backupinfo_$TODAY.log
      
      find /backup -name "arch_*.tar" -mtime +2 -exec rm -r {} \;
      
      #mail -s " `hostname` :: Fullbackup Information" rdba-alerts@enterprisedb.com < $LOG/backupinfo_$TODAY.log
      exit 0
      

      Tag:postgresql, script

      • Share:
      bushra.rayafeel

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