Volume permission errors prevent service startup

PostgreSQL, ClickHouse, SeaweedFS, or GeoIP services fail to start with 'Permission denied' or 'chown: cannot access' errors when Docker volumes have incorrect ownership. Most common with bind mounts where host directory permissions don't match container user IDs.

Ensure volumes are created with correct ownership before starting services. For explicit host mounts, verify directory permissions match container user IDs. Prefer named Docker volumes over bind mounts to avoid permission issues. Check affected volumes: sentry-postgres, sentry-clickhouse, sentry-kafka, sentry-redis.