Difference between revisions of "Cedeus DB backups"

Revision as of 16:08, 3 December 2014

>> return to Cedeus_IDE

How to set up Backups

notifications

To get notified about the backups via email, a/the shell script may send emails via "mailx" - i.e Nail. => see http://klenwell.com/press/2009/03/ubuntu-email-with-nail/

Btw. postfix may work as well

=> ToDo: Install mail program

dump of the GeoNode DB - on CedeusDB

• create a shell script that contains the pgdump instructions - see /home/ssteinig/pgdbbackup.sh on CedeusDB
• test if script or script execution actually works. A simple script for testing may perhaps be this (/home/ssteinig/touchy.sh)

#!/bin/bash 
touch /home/ssteinig/ftw.text

• create a cron-tab entry for user ssteinig with "crontab -e"

  then add entry such as "00 01 * * * sh /home/ssteinig/geonodegisdb93backup.sh" to run the dump script daily at 1am

  => when using the user "postgres" to do the db dump

  • check if postgres user has a password assigned already (use ALTER... to do so: http://wiki.geosteiniger.cl/mediawiki-1.22.7/index.php/Setting_up_geonode#Some_PostgreSQL_commands )
  • create a .pgpass file to provide the password: http://wiki.postgresql.org/wiki/Pgpass

• check also if the cron is running: "sudo service cron status" otherwise start it...
• to see what the cron tab contains use "crontab -l"

File transfer

can be accomplished using scp e.g.:

• "scp /home/ssteinig/ftw.txt user@example.com:/home/ssteinig/dbbackups/"

  • However, a ssh key should be generated first so no password needs to be provided. See: http://troy.jdmz.net/rsync/index.html
  • "ssh-keygen -t rsa -b 2048 -f /home/thisuser/cron/thishost-rsync-key" and copy the key to the other servers users .ssh folder
  • then we would use "scp -i /home/ssteinig/ftw.txt user@example.com:/home/ssteinig/dbbackups/"
  • note that it is necessary to initialize it once (with whatever file), so the connextion gets an ECDDSA key fingerprint.

Example geonodegisdb93backup.sh

#!/bin/bash
logfile="/home/ssteinig/geonode_db_backups/pgsql.log"
backup_dir="/home/ssteinig/geonode_db_backups"
touch $logfile

echo "Starting backup of databases " >> $logfile
dateinfo=`date '+%Y-%m-%d %H:%M:%S'`
timeslot=`date '+%Y%m%d-%H%M'`
/usr/bin/vacuumdb -z -h localhost -U postgres geonodegisdb93  >/dev/null 2>&1
/usr/bin/pg_dump -U postgres -i -F c -b geonodegisdb93 -h 127.0.0.1 -f $backup_dir/geonodegisdb93-backup-$timeslot.backup
echo "Backup and Vacuum complete on $dateinfo for database: geonodegisdb93 " >> $logfile
echo "Done backup of databases " >> $logfile
# sstein: email notification not used at the moment
# tail -16 /home/ssteinig/geonode_db_backups/pgsql.log | mailx blabla@blub.cl

This example is based on the shell script posted here: http://stackoverflow.com/questions/854200/how-do-i-backup-my-postgresql-database-with-cron For a better Postgres dump script it may be worth to look here: https://wiki.postgresql.org/wiki/Automated_Backup_on_Linux

dump of the GeoNode user db - on CedeusGeonode VM

blabla

tar/zip of the (uploaded) GeoNode file data and docs - on CedeusGeonode Vm

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MySQL dump for Elgg miCiudad - on CedeusGeonode VM

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tar/zip of the (uploaded) Elgg miCiudad files - on CedeusGeonode VM

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MySQL dump for Mediawiki(s) - on CedeusGeonode VM

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