mirror of
https://github.com/nextcloud/all-in-one.git
synced 2024-09-21 15:26:16 +08:00
144 lines
4.6 KiB
Bash
144 lines
4.6 KiB
Bash
#!/bin/bash
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# Variables
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DATADIR="/var/lib/postgresql/data"
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DUMP_DIR="/mnt/data"
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DUMP_FILE="$DUMP_DIR/database-dump.sql"
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export PGPASSWORD="$POSTGRES_PASSWORD"
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# Don't start database as long as backup is running
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while [ -f "$DUMP_DIR/backup-is-running" ]; do
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echo "Waiting for backup container to finish..."
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echo "If this is incorrect because the backup container is not running anymore (because it was forcefully killed), you might delete the lock file which is by default stored here:"
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echo "/var/lib/docker/volumes/nextcloud_aio_database_dump/_data/backup-is-running"
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sleep 10
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done
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# Check if dump dir is writeable
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if ! [ -w "$DUMP_DIR" ]; then
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echo "DUMP dir is not writeable by postgres user."
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exit 1
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fi
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# Delete the datadir once (needed for setting the correct credentials on old instances once)
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if ! [ -f "$DUMP_DIR/export.failed" ] && ! [ -f "$DUMP_DIR/initial-cleanup-done" ]; then
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set -ex
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rm -rf "${DATADIR:?}/"*
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touch "$DUMP_DIR/initial-cleanup-done"
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set +ex
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fi
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# Test if some things match
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# shellcheck disable=SC2235
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if ( [ -f "$DATADIR/PG_VERSION" ] && [ "$PG_MAJOR" != "$(cat "$DATADIR/PG_VERSION")" ] ) \
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|| ( ! [ -f "$DATADIR/PG_VERSION" ] && ( [ -f "$DUMP_FILE" ] || [ -f "$DUMP_DIR/export.failed" ] ) ); then
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# The DUMP_file must be provided
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if ! [ -f "$DUMP_FILE" ]; then
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echo "Unable to restore the database because the database dump is missing."
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exit 1
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fi
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# If database export was unsuccessful, skip update
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if [ -f "$DUMP_DIR/export.failed" ]; then
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echo "Database export failed the last time. Most likely was the export time not high enough."
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echo "Please report this to https://github.com/nextcloud/all-in-one/issues. Thanks!"
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exit 1
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fi
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# Inform
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echo "Restoring from database dump."
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# Exit if any command fails
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set -ex
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# Remove old database files
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rm -rf "${DATADIR:?}/"*
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# Change database port to a random port temporarily
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export PGPORT=11000
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# Create new database
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exec docker-entrypoint.sh postgres &
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# Wait for creation
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while ! nc -z localhost 11000; do
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echo "Waiting for the database to start."
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sleep 5
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done
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# Check if the line we grep for later on is there
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GREP_STRING='Name: oc_appconfig; Type: TABLE; Schema: public; Owner:'
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if ! grep -q "$GREP_STRING" "$DUMP_FILE"; then
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echo "The needed oc_appconfig line is not there which is unexpected."
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echo "Please report this to https://github.com/nextcloud/all-in-one/issues. Thanks!"
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exit 1
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fi
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# Get the Owner
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DB_OWNER="$(grep "$GREP_STRING" "$DUMP_FILE" | grep -oP 'Owner:.*$' | sed 's|Owner:||;s| ||g')"
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if [ "$DB_OWNER" != "oc_$POSTGRES_USER" ]; then
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DIFFERENT_DB_OWNER=1
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psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
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CREATE USER "$DB_OWNER" WITH PASSWORD '$POSTGRES_PASSWORD' CREATEDB;
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ALTER DATABASE "$POSTGRES_DB" OWNER TO "$DB_OWNER";
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EOSQL
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fi
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# Restore database
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echo "Restoring the database from database dump"
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psql "$POSTGRES_DB" -U "$POSTGRES_USER" < "$DUMP_FILE"
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# Correct permissions
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if [ -n "$DIFFERENT_DB_OWNER" ]; then
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psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
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ALTER DATABASE "$POSTGRES_DB" OWNER TO "oc_$POSTGRES_USER";
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REASSIGN OWNED BY "$DB_OWNER" TO "oc_$POSTGRES_USER";
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EOSQL
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fi
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# Shut down the database to be able to start it again
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pg_ctl stop -m fast
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# Change database port back to default
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export PGPORT=5432
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# Don't exit if command fails anymore
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set +ex
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fi
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# Cover the last case
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if ! [ -f "$DATADIR/PG_VERSION" ] && ! [ -f "$DUMP_FILE" ]; then
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# Remove old database files if somehow there should be some
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rm -rf "${DATADIR:?}/"*
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fi
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echo "Setting max connections..."
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MEMORY=$(mawk '/MemTotal/ {printf "%d", $2/1024}' /proc/meminfo)
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MAX_CONNECTIONS=$((MEMORY/50+3))
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if [ -n "$MAX_CONNECTIONS" ]; then
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sed -i "s|^max_connections =.*|max_connections = $MAX_CONNECTIONS|" "/var/lib/postgresql/data/postgresql.conf"
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fi
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# Catch docker stop attempts
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trap 'true' SIGINT SIGTERM
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# Start the database
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exec docker-entrypoint.sh postgres &
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wait $!
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# Continue with shutdown procedure: do database dump, etc.
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rm -f "$DUMP_FILE.temp"
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touch "$DUMP_DIR/export.failed"
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if pg_dump --username "$POSTGRES_USER" "$POSTGRES_DB" > "$DUMP_FILE.temp"; then
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rm -f "$DUMP_FILE"
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mv "$DUMP_FILE.temp" "$DUMP_FILE"
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pg_ctl stop -m fast
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rm "$DUMP_DIR/export.failed"
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echo 'Database dump successful!'
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exit 0
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else
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pg_ctl stop -m fast
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echo "Database dump unsuccessful!"
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exit 1
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fi
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