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| − | I recently had to do a backup and restore of my PostgreSQL database. Here, for the benefit of the other PostgreSQL user are my notes. I did my backup and restore because I was updating the database software.
| + | {{delete|This page is merged into [[Backups]]}} |
| − | * Shutdown OpenSim
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| − | * Use the pg_dump command to backup the database.
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| − | ** In my case, I did this as the postgres user. It should work as the OpenSim (or whatever user owns the OpenSim database) user.
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| − | ** pg_dump -b -Fc -C -f opensim.db.backup opensim
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| − | ** The -b option requests that large objects are included in the dump. This would be things like textures and sounds.
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| − | ** The -Fc option creates the backup file as a gzipped tar file
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| − | ** The -C option includes commands to create the database when restoring
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| − | ** The -f option specifies the name of the output file. In this case opensim.db.backup
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| − | ** There are a number of other options that can be used. For example, if you're doing the backup on a different machine, the -h option allows you to specify the machine that the database is running on.
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| − | * Copy the opensim.db.backup file to a CD-ROM or wherever you want it saved.
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| − | * Do what you need to do. In my case, it was upgrading the PostgreSQL software
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| − | * While PostgreSQL was shutdown, I saved a tar of its /data directory to make it easier to recover if the upgrade went bad.
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| − | * I also took copies of the configuration files in the /data directory so that I didn't have to recreate them.
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| − | * Delete the /data directory
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| − | * Initialize the new database
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| − | ** The command is initdb -D <path to /data directory>
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| − | * Start the new PostgreSQL software (it will complain about data formats if you try this before you delete the old /data and run initdb)
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| − | * Create the opensim user
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| − | * Restore the data using pg_restore
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| − | ** pg_restore -C -d template1 opensim.db.backup
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| − | ** Read the PostgreSQL documentation for more information.
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| − | In my case, it seemed to work fine. After I started up OpenSim, I logged in and found everything as it should be. I would really recommend trying this first on a test Sim that you didn't care about. Also study the documentation before trying this. Your setup may be different than mine.
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| − | [[Category:Database]] | + | |
