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migration - add some documentation on limits regarding the database owner name

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Signed-off-by: Simon L <szaimen@e.mail.de>
This commit is contained in:
Simon L 2022-12-29 00:29:53 +01:00
parent 4750fb228f
commit 8ae4ec52a3
2 changed files with 6 additions and 5 deletions
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8
Containers/postgresql/start.sh
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@ -91,10 +91,10 @@ if ( [ -f "$DATADIR/PG_VERSION" ] && [ "$PG_MAJOR" != "$(cat "$DATADIR/PG_VERSIO
# Get the Owner # Get the Owner
DB_OWNER="$(grep "$GREP_STRING" "$DUMP_FILE" | grep -oP 'Owner:.*$' | sed 's|Owner:||;s| ||g')" DB_OWNER="$(grep "$GREP_STRING" "$DUMP_FILE" | grep -oP 'Owner:.*$' | sed 's|Owner:||;s| ||g')"
if [ "$DB_OWNER" = "$POSTGRES_USER" ]; then if [ "$DB_OWNER" = "$POSTGRES_USER" ]; then
DIFFERENT_DB_OWNER=1 echo "Unfortunately was the found database owner of the dump file the same as the POSTGRES_USER $POSTGRES_USER"
psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL echo "It is not possible to import a database dump from this database owner."
ALTER DATABASE "$POSTGRES_DB" OWNER TO "$POSTGRES_USER"; echo "However you might rename the owner in the dumpfile to something else."
EOSQL exit 1
elif [ "$DB_OWNER" != "oc_$POSTGRES_USER" ]; then elif [ "$DB_OWNER" != "oc_$POSTGRES_USER" ]; then
DIFFERENT_DB_OWNER=1 DIFFERENT_DB_OWNER=1
psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL

3
migration.md
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@ -64,7 +64,8 @@ The procedure for migrating the files and the database works like this:
1. Type in `local::/your/old/datadir/` which should bring up the exact line where you need to modify the path to use the one used in Nextcloud AIO, instead. 1. Type in `local::/your/old/datadir/` which should bring up the exact line where you need to modify the path to use the one used in Nextcloud AIO, instead.
1. Change it to look like this: `local::/mnt/ncdata/`. 1. Change it to look like this: `local::/mnt/ncdata/`.
1. Now save the file by pressing `[CTRL] + [o]` then `[ENTER]` and close nano by pressing `[CTRL] + [x]` 1. Now save the file by pressing `[CTRL] + [o]` then `[ENTER]` and close nano by pressing `[CTRL] + [x]`
1. In order to make sure that everything is good, you can now run `grep "/your/old/datadir" database-dump.sql` which should not bring up further results. 1. In order to make sure that everything is good, you can now run `grep "/your/old/datadir" database-dump.sql` which should not bring up further results.<br>
1. **Please note:** Unfortunately it is not possible to import a database dump from a former database owner with the name `nextcloud`. You can check if that is the case with this command: `grep "Name: oc_appconfig; Type: TABLE; Schema: public; Owner:" database-dump.sql | grep -oP 'Owner:.*$' | sed 's|Owner:||;s| ||g'`. If it returns `nextcloud`, you need to rename the owner in the dump file manually. A command like the following should work, however please note that it is possible that it will overwrite wrong lines. You can thus first check which lines it will change with `grep "Owner: nextcloud$" database-dump.sql`. If only correct looking lines get returned, feel free to change them with `sed -i 's|Owner: nextcloud$|Owner: ncadmin|'`.
1. Next, copy the database dump into the correct place and prepare the database container which will import from the database dump automatically the next container start: 1. Next, copy the database dump into the correct place and prepare the database container which will import from the database dump automatically the next container start:
``` ```
sudo rm /var/lib/docker/volumes/nextcloud_aio_database_dump/_data/database-dump.sql sudo rm /var/lib/docker/volumes/nextcloud_aio_database_dump/_data/database-dump.sql