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Graph/docker-postgres-init-drift

AntiPattern

Container Data Init Drift

docker-postgres-init-drift

PostgreSQL inside Docker fails or misbehaves because init inputs and runtime configuration don’t match the mounted filesystem state, so the init process is skipped or SQL/log settings are silently ineffective. Outcomes include missing init SQL, stale/incorrect partitions, and confusing logging differences.

Node Details

Public graph metadata

Updated7/15/2026

Connections

30 linked nodes

MATCHESSolution

testing that `pgdump` line by itself inside an interactive docker container issuing a `bash` command. Outcome: Once inside the temporary docker container, run command in bash shell.

MATCHESSolution

different versions of devcontainer's OS lead to different versions of compiled dependencies — When I migrate another Apps, I might need another Debian version. Tension: this would lead to the packages land in the sam. Outcome: I figured out later.

MATCHESSolution

Instead of using VSCode's `Reopen in Dev Container`, I used `Clone Repository in Container Volume`. Tension: an isolated Docker volume with no bindings. Outcome: pnpm was then happy to use parent directories for the store.

MATCHESSolution

TRUNCATE TABLE nodestore_node; — docker exec -it sentry-self-hosted_postgres_1 bash psql -U postgres. Tension: I want to clean up historical data to save space. Outcome: Here is my solution :.

MATCHESSolution

Use Drizzle migrate:safe (baseline + drift heal + drizzle-kit migrate) instead of raw psql loop in CI deploy — CI deploy. Tension: instead of raw psql loop. Outcome: baseline + drift heal + drizzle-kit migrate.

MATCHESSolution

The reliable fix is to detect a pooled URL and rewrite to the unpooled host BEFORE the postgres.js client is initialized — For backfill / admin scripts (Drizzle paths). Tension: postgres.js doesn't expose a SQL-level connect hook, AND Neon rejects `connection: { search_path }` via startup. Outcome: The unpooled URL has the per-role default `search_path` and isn't reset by a pooler, so Drizzle's unqualified table references resolve correctly.

MATCHESSolution

produces both files atomically — Faster way to ship a migration. Tension: Hand-writing is fine for non-trivial DDL Drizzle can't infer, but you must remember to register manually.

MATCHESSolution

Use AWS DMS. Tension: It solves the schema port issue. Outcome: there are ways to configure it to run as CDC if you have access to enough data.

MATCHESSolution

How to connect to the PostgreSQL database from outside the container? — I have a PostgreSQL database in docker-compose.yaml. Outcome: ports: - "5432:5432".

MATCHESSolution

brew services stop postgresql@15 — problem deals with postgres on localhost. Tension: psql -h localhost -p 5432 -U username -d dbname. Outcome: After these commands I can connect to DB.

MATCHESSolution

host := "/var/run/postgresql/" should work — how to ping postgreSQL using Golang just to check that they can talk to each other. Tension: password authentication failed for user "eos_user". Outcome: Successfully connected to PostgreSQL over UNIX socket!

MATCHESSolution

mkdir /var/lib/pgadmin/storage/loginemail_email.com; cp -f /pgadmin4/pgpass /var/lib/pgadmin/storage/loginemail_email.com; chmod 600 /var/lib/pgadmin/storage/loginemail_email.com/pgpass. Tension: the pgpass file must be in the directory `/var/lib/pgadmin/storage/`. Outcome: Here's my working docker compose entry.

MATCHESSolution

Usually, you shouldn't bother. — If your installation packages don't offer an option not to install the server. Tension: The PostgreSQL binaries are fairly small and won't fill your disk. Outcome: install the server as well.

MATCHESSolution

I ended up setting up a Private Endpoint on my PostgreSql Flexible Server resource — onto the Container Apps VNET. Tension: thus giving access from CAE to Postgres. Outcome: I can then turn off Public Access to Postgres.

MATCHESSolution

FROM postgres:16 — docker-compose.build.yml. Tension: The data directory was initialized by PostgreSQL version 16. Outcome: docker-compose -f docker-compose.build.yml up --build --remove-orphans.

MATCHESSolution

you forgot to add Postgresql to the metrics pipelines section — otel-collector-config.yaml. Tension: empty dashboard.

MATCHESSolution

It's best to use a Postgres operator like Kubegres with full lifecycle management — deploy primary and slave postgres instances and setup streaming replication between them. Tension: you would need to perform them manually. Outcome: automatic backup and failover support.

MATCHESSolution

Try this stateful set if it's fine with you — volumeMounts: - name: postgres-data mountPath: /var/lib/postgresql/data subPath: pgdata.

MATCHESSolution

For Debian-like systems. Tension: It is possible that you will need to install the logic behind it. Outcome: sudo apt-get install postgresql-contrib.

MATCHESSolution

you can use it to access the database — PostgreSQL DB already has a dependency in the Pub.dev. Tension: or if you'd like to create an API that's totally acceptable. Outcome: the database should be hosted in Cloud or Localhost for development then you can use it easily with this dependency.

MATCHESSolution

Verify the SQL files exist and the mount paths are correct (preferably use absolute paths). If needed, mount the entire `./database/` directory to `/docker-entrypoint-initdb.d/` so PostgreSQL can find and run `01-schema.sql` and `02-init.sql`.

MATCHESSolution

configure `postgresql.conf` to log all queries and ddl by configuring `log_statement` key in the file to `all` — The official postgres docs are helpful here. Outcome: If it needs to be loaded into a table you can parse the logs and write that information back into a table or just rotate and back up the logs for when they need to be audited.

MATCHESSolution

Spring context. Tension: The datasource configuration should be injected into the Spring context. Outcome: registry.add("spring.datasource.url", postgreSQLContainer ::getJdbcUrl); registry.add("spring.datasource.username", postgreSQLContainer ::getUsername); registry.add("spring.datasource.password", postgreSQLContainer ::getPassword);.

MATCHESSolution

Option A is to host the postgres in K8s and access it through kubernetes DNS — access it through kubernetes DNS. Tension: Option B is to give the proper IP of the system where the database is running. Outcome: Option A is to host the postgres in K8s and access it through kubernetes DNS or Option B is to give the proper IP of the system where the database is running.

MATCHESSolution

You can run a container in interactive mode, and that will provide a sort of sandbox environment for you — make sure you don't mount any volumes into the container. Tension: You should then be able to mess around and not have to worry about malware. Outcome: docker run -it container.

MATCHESSolution

changed the port used by CrateDB to 5433 — because PostgreSQL is installed and is using Port 5432. Outcome: changed the port used by CrateDB to 5433.

MATCHESSolution

check the container logs — When working with Docker and Django it's quite common to get things into a state where the container keeps restarting / won't really start. Tension: This usually indicates a problem in Django and the logs shows us what's wrong with it. Outcome: one will get a more specific error.

MATCHESSolution

migrations and pgvector schema run only when memory is enabled — boot catches memory initialization errors and continues without memory. Tension: normal unit tests do not require Postgres. Outcome: Tests use fake MemorySystem objects.

MATCHESSolution

used a shared Postgres LISTEN/NOTIFY trigger function — for an events table and a curiosity_threads table. Tension: TG_TABLE_NAME was child partition name. Outcome: Rebuilt TypeScript successfully, ran the focused memory test file successfully, applied the follow-up migration locally, and reran a runtime smoke.

MATCHESSolution

After wiping Docker volumes, recreate all 11 vector indexes before starting extraction — Either run `pnpm graph:schema:vectors` (needs DATABASE_URL and NEO4J_* env vars) or create them directly via cypher-shell. Outcome: After creating indexes and restarting the API: extraction pipeline processed reports successfully, circuit breaker stayed closed, graph populated with nodes and edges.

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