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b0283c42f9
A user who somehow got an empty `zulip` database, but without a
`zerver_messages` table in it, would get stuck in the installer at:
```
++ su postgres -c 'cd / && psql -v ON_ERROR_STOP=1 -Atc '\''SELECT COUNT(*) FROM zulip.zerver_message;'\'' zulip'
ERROR: relation "zulip.zerver_message" does not exist
LINE 1: SELECT COUNT(*) FROM zulip.zerver_message;
^
+ records=
```
Treat a failure to select from `zerver_messages` as having 0 messages,
and continue with the `DROP DATABASE IF EXISTS` / `CREATE DATABASE`
that `create-db.sql` usually does.
Fixes: #29110.
60 lines
2.3 KiB
Bash
Executable File
60 lines
2.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -e
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if [ "$EUID" -ne 0 ]; then
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echo "Error: This script must be run as root" >&2
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exit 1
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fi
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set -x
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# What user should we use for connecting to the database
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POSTGRES_USER="${POSTGRES_USER:-postgres}"
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# What database name and username to use when connecting to the database
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DATABASE_NAME=$(crudini --get /etc/zulip/zulip.conf postgresql database_name 2>/dev/null || echo zulip)
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DATABASE_USER=$(crudini --get /etc/zulip/zulip.conf postgresql database_user 2>/dev/null || echo zulip)
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if [ "$(su "$POSTGRES_USER" -c "cd / && psql -v ON_ERROR_STOP=1 -Atc \"SELECT 1 FROM pg_database WHERE datname='$DATABASE_NAME';\"")" = "1" ]; then
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records="$(su "$POSTGRES_USER" -c "cd / && psql -v ON_ERROR_STOP=1 -Atc 'SELECT COUNT(*) FROM $DATABASE_NAME.zerver_message;' $DATABASE_USER" || echo 0)"
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if [ "$records" -gt 200 ]; then
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set +x
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echo "WARNING: This will delete your Zulip database which currently contains $records messages."
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read -p "Do you want to proceed? [y/N] " -r
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echo
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if [[ ! $REPLY =~ ^[Yy]$ ]]; then
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exit 1
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fi
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set -x
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fi
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fi
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# Shut down all services to ensure a quiescent state.
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if [ -e "/var/run/supervisor.sock" ]; then
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su zulip -c "$(dirname "$0")/../stop-server"
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fi
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# Drop any open connections to any old database.
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# Send the script via stdin in case the postgres user lacks permission to read it.
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su -s /usr/bin/env - -- "$POSTGRES_USER" \
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bash -s - zulip zulip_base <"$(dirname "$0")/terminate-psql-sessions"
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(
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cd / # Make sure the current working directory is readable by postgres
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su "$POSTGRES_USER" -c "psql -v ON_ERROR_STOP=1 -v dbname=$DATABASE_NAME -v dbuser=$DATABASE_USER -e"
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) <"$(dirname "$0")/create-db.sql"
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# Set a postgres password if the postgres username is not "zulip".
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# When the username is zulip, we rely on running as the zulip system
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# user for authentication via postgres' peer authentication.
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if [ "$DATABASE_USER" != "zulip" ]; then
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PASSWORD=$(crudini --get /etc/zulip/zulip-secrets.conf secrets postgres_password)
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su "$POSTGRES_USER" -c "psql -v ON_ERROR_STOP=1 -e postgres" <<EOF
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ALTER ROLE $DATABASE_USER PASSWORD '$PASSWORD';
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EOF
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fi
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# Clear memcached to avoid contamination from previous database state
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"$(dirname "$0")/flush-memcached"
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echo "Database created"
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