66 lines
1.5 KiB
Markdown
66 lines
1.5 KiB
Markdown
# Postgresql Backup and Restore in Docker
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## Make pg backup
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```shell
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docker exec -e PGPASSWORD='<SuperSecure>' <ContainerName> \
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pg_dump -U <PostgresRole> -d <PostgresDB> -Fc -f /tmp/database.dump
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```
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## Copy backup to root
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```shell
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docker cp <ContainerName>:/tmp/database.dump /root/database.dump
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```
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## Stop and remove old container
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```shell
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docker stop <ContainerName>
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docker rm <ContainerName>
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```
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## Remove old database files
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```shell
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rm -rf /mnt/<PostgresDBDatadir>/
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mkdir /mnt/<PostgresDBDatadir>/
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chown 999 /mnt/<PostgresDBDatadir>/
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chmod 700 /mnt/<PostgresDBDatadir>/
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```
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## Start new container
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```shell
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docker run \
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--name <ContainerName> \
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--detach \
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--restart unless-stopped \
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--network <ContainerNetwork> \
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--volume /mnt/<PostgresDBDatadir>:/var/lib/postgresql/data \
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--env POSTGRES_DB=<PostgresDB> \
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--env POSTGRES_USER=<PostgresRole> \
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--env POSTGRES_PASSWORD=<SuperSecure>
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docker.io/library/postgres:17
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```
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## Copy backup to new container
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```shell
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docker cp /root/database.dump <ContainerName>:/tmp/database.dump
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```
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## Verify role and db
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```shell
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docker exec -e PGPASSWORD='<SuperSecure>' <ContainerName> \
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psql -U <PostgresRole> -c "CREATE ROLE <PostgresRole> WITH LOGIN PASSWORD '<SuperSecure>';"
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docker exec -e PGPASSWORD='<SuperSecure>' <ContainerName> \
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psql -U <PostgresRole> -c "CREATE DATABASE <PostgresDB> OWNER <PostgresRole>;"
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```
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## Restore backup
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```shell
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docker exec -e PGPASSWORD='<SuperSecure>' <ContainerName> \
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pg_restore -U <PostgresRole> -d <PostgresDB> -Fc /tmp/database.dump
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```
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