fix gitea db

gitea/fix-postgres-collation-version.sh

@@ -0,0 +1,48 @@
+#!/usr/bin/env bash
+# Fix PostgreSQL "collation version mismatch" (e.g. DB created with 2.36, OS provides 2.41).
+# Reindexes then refreshes collation version. REINDEX will be canceled if Gitea (or other
+# clients) keep using the DB, so either stop Gitea first or use --terminate-connections.
+#
+# Usage (from host):
+#   ./fix-postgres-collation-version.sh <postgres_container_name>
+#   ./fix-postgres-collation-version.sh <postgres_container_name> gitea
+#   ./fix-postgres-collation-version.sh <postgres_container_name> gitea --terminate-connections
+#
+# Option: --terminate-connections  Terminate all other sessions on the DB so REINDEX can
+#                                  run without being canceled. Gitea will disconnect; restart it after.
+
+
+# REINDEX DATABASE gitea;
+# ALTER DATABASE gitea REFRESH COLLATION VERSION;
+
+
+set -e
+CONTAINER="${1:?Usage: $0 <postgres_container_name> [database_name] [--terminate-connections]}"
+DB="${2:-gitea}"
+TERMINATE=""
+if [[ "$2" == "--terminate-connections" ]]; then
+  TERMINATE=1
+  DB="gitea"
+elif [[ "$3" == "--terminate-connections" ]]; then
+  TERMINATE=1
+fi
+
+if [[ -z "$TERMINATE" ]]; then
+  echo "Stop the Gitea container (and any other app using database $DB) before continuing,"
+  echo "otherwise REINDEX may be canceled. Press Enter when ready, or Ctrl+C to abort."
+  read -r
+fi
+
+if [[ -n "$TERMINATE" ]]; then
+  echo "Terminating other connections to $DB..."
+  docker exec "$CONTAINER" psql -U postgres -d "$DB" -c "SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = '$DB' AND pid <> pg_backend_pid();" || true
+  sleep 2
+fi
+
+echo "Reindexing database $DB (may take a while)..."
+docker exec "$CONTAINER" psql -U postgres -d "$DB" -c "REINDEX DATABASE $DB;"
+
+echo "Refreshing collation version..."
+docker exec "$CONTAINER" psql -U postgres -d "$DB" -c "ALTER DATABASE $DB REFRESH COLLATION VERSION;"
+
+echo "Done. Start Gitea again if you stopped it or used --terminate-connections."