112 lines
3 KiB
Bash
Executable file
112 lines
3 KiB
Bash
Executable file
#!/bin/bash
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# Username to connect to database as. Will default to "postgres" if none specified.
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USERNAME=postgres
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# This dir will be created if it doesn't exist. This must be writable by the user the script is
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# running as.
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BACKUP_DIR=/var/rhizo_backups/postgresql/
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# Will produce a custom-format backup if set to "yes"
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ENABLE_CUSTOM_BACKUPS=no
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# Will produce a gzipped plain-format backup if set to "yes"
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ENABLE_PLAIN_BACKUPS=yes
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# Which day to take the weekly backup from (1-7 = Monday-Sunday)
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DAY_OF_WEEK_TO_KEEP=6
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# Number of days to keep daily backups
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DAYS_TO_KEEP=7
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# How many weeks to keep weekly backups
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WEEKS_TO_KEEP=5
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function perform_backups()
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{
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SUFFIX=$1
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FINAL_BACKUP_DIR=$BACKUP_DIR"`date +\%Y-\%m-\%d`$SUFFIX/"
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echo "Making backup directory in $FINAL_BACKUP_DIR"
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if ! mkdir -p $FINAL_BACKUP_DIR; then
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echo "Cannot create backup directory in $FINAL_BACKUP_DIR. Go and fix it!" 1>&2
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exit 1;
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fi;
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###########################
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###### FULL BACKUPS #######
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###########################
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FULL_BACKUP_QUERY="select datname from pg_database where not datistemplate and datallowconn order by datname;"
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echo -e "\n\nPerforming full backups"
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echo -e "--------------------------------------------\n"
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for DATABASE in `psql -U "$USERNAME" -At -c "$FULL_BACKUP_QUERY" postgres`
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do
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if [ $ENABLE_PLAIN_BACKUPS = "yes" ]
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then
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echo "Plain backup of $DATABASE"
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if ! pg_dump -Fp -U "$USERNAME" "$DATABASE" | gzip > $FINAL_BACKUP_DIR"$DATABASE".sql.gz.in_progress; then
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echo "[!!ERROR!!] Failed to produce plain backup database $DATABASE" 1>&2
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else
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mv $FINAL_BACKUP_DIR"$DATABASE".sql.gz.in_progress $FINAL_BACKUP_DIR"$DATABASE".sql.gz
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fi
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fi
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if [ $ENABLE_CUSTOM_BACKUPS = "yes" ]
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then
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echo "Custom backup of $DATABASE"
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if ! pg_dump -Fc -U "$USERNAME" "$DATABASE" -f $FINAL_BACKUP_DIR"$DATABASE".custom.in_progress; then
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echo "[!!ERROR!!] Failed to produce custom backup database $DATABASE"
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else
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mv $FINAL_BACKUP_DIR"$DATABASE".custom.in_progress $FINAL_BACKUP_DIR"$DATABASE".custom
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fi
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fi
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done
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echo -e "\nAll database backups complete!"
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}
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# MONTHLY BACKUPS
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DAY_OF_MONTH=`date +%d`
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if [ $DAY_OF_MONTH -eq 1 ];
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then
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# Delete all expired monthly directories
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find $BACKUP_DIR -maxdepth 1 -name "*-monthly" -exec rm -rf '{}' ';'
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perform_backups "-monthly"
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exit 0;
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fi
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# WEEKLY BACKUPS
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DAY_OF_WEEK=`date +%u` #1-7 (Monday-Sunday)
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EXPIRED_DAYS=`expr $((($WEEKS_TO_KEEP * 7) + 1))`
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if [ $DAY_OF_WEEK = $DAY_OF_WEEK_TO_KEEP ];
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then
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# Delete all expired weekly directories
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find $BACKUP_DIR -maxdepth 1 -mtime +$EXPIRED_DAYS -name "*-weekly" -exec rm -rf '{}' ';'
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perform_backups "-weekly"
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exit 0;
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fi
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# DAILY BACKUPS
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# Delete daily backups 7 days old or more
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find $BACKUP_DIR -maxdepth 1 -mtime +$DAYS_TO_KEEP -name "*-daily" -exec rm -rf '{}' ';'
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perform_backups "-daily"
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