fix: use trust auth for docker-postgres

[shunkakinoki]

Summary

Add POSTGRES_HOST_AUTH_METHOD=trust to the docker-postgres container.

Problem

POSTGRES_PASSWORD only sets the password on first container init. After crash recovery, the password in the auth system gets out of sync, causing password authentication failed errors that crash-loop paperclip and any other service using the postgres connection.

Fix

Trust all connections — no password needed. Safe since this postgres is only reachable from localhost/docker bridge, not exposed externally.

Note

Existing container needs to be recreated for this to take effect:

docker stop postgres && docker rm postgres
make systemctl-docker-postgres

---

Summary by cubic

Switch docker-postgres to trust auth by setting POSTGRES_HOST_AUTH_METHOD=trust. This prevents password mismatches after crash recovery that caused "password authentication failed" and crash loops in dependent services.

• Migration
  • Recreate the container to apply the env var: run docker stop postgres && docker rm postgres, then make systemctl-docker-postgres.

^{Written for commit 68d1293. Summary will update on new commits.}

[mesa-dot-dev]

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[coderabbitai]

Caution

Review failed

Pull request was closed or merged during review

📝 Walkthrough

Summary by CodeRabbit

• Chores
  • Updated PostgreSQL Docker container configuration with additional authentication settings.

Walkthrough

A single environment variable POSTGRES_HOST_AUTH_METHOD=trust is added to the Docker container initialization command in the PostgreSQL startup script, enabling trust-based authentication for local PostgreSQL connections without password verification.

Changes

Cohort / File(s)	Summary
PostgreSQL Docker Configuration home-manager/services/docker-postgres/start-postgres.sh	Added POSTGRES_HOST_AUTH_METHOD=trust environment variable to the docker run invocation alongside existing database and password configuration variables.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested labels

bug

Poem

🐰 A postgres container takes flight,
With trust authentication set just right,
No passwords needed, connections flow free,
The rabbit hops on, happy as can be! 🌿

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The pull request title clearly and concisely summarizes the main change: setting trust authentication for the docker-postgres service.
Description check	✅ Passed	The pull request description is comprehensive and directly related to the changeset, explaining the problem, solution, and migration steps required.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/postgres-trust-auth

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[mesa-dot-dev]

Mesa Description

TL;DR

Add POSTGRES_HOST_AUTH_METHOD=trust to the docker-postgres container.

What changed?

• Added POSTGRES_HOST_AUTH_METHOD=trust to the docker-postgres container configuration to prevent password authentication failed errors after crash recovery. This effectively disables password authentication for connections, which is safe as the PostgreSQL instance is only accessible from localhost/docker bridge.

^{Description generated by Mesa. Update settings}

[gemini-code-assist]

Code Review

This pull request updates the PostgreSQL Docker startup script to enable the 'trust' authentication method, allowing passwordless access. A security review identified that this change, combined with the current port mapping, could expose the database to the network; it is recommended to restrict the port binding to '127.0.0.1' to ensure the database remains accessible only from the local host.

[gemini-code-assist]

Using trust authentication allows passwordless access to the database. While the PR description suggests this is safe, the port mapping -p "${HOST_PORT}:${CONTAINER_PORT}" on line 47 binds to 0.0.0.0 by default, exposing the database to the network. To ensure it is only reachable from localhost as intended, the port mapping should be restricted to 127.0.0.1. Additionally, consider updating the tests in spec/docker_postgres_spec.sh to reflect this change.

[Copilot]

Pull request overview

This PR updates the Home Manager–managed docker-postgres startup script to avoid password auth issues after container lifecycle events by configuring PostgreSQL to trust host connections.

Changes:

• Add POSTGRES_HOST_AUTH_METHOD=trust to the docker run environment for the postgres container.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

POSTGRES_HOST_AUTH_METHOD=trust disables password checks for all TCP host connections. With the current -p "${HOST_PORT}:${CONTAINER_PORT}" publish syntax, Docker binds to 0.0.0.0 by default, so Postgres can become reachable from other machines on the network (depending on host firewall). To match the PR description (“only reachable from localhost/docker bridge”) and avoid unauthenticated remote access, bind the published port to loopback (e.g., 127.0.0.1) and/or avoid publishing the port entirely if only other containers need it.

Suggested change

	-p "${HOST_PORT}:${CONTAINER_PORT}" \
	-p "127.0.0.1:${HOST_PORT}:${CONTAINER_PORT}" \

[Copilot]

This change introduces a new runtime behavior (trust auth) but the existing ShellSpec coverage for this script doesn’t assert it. Consider updating the docker-postgres spec to check for POSTGRES_HOST_AUTH_METHOD=trust (and ideally the chosen port bind strategy) so the security-sensitive configuration can’t regress silently.

[cubic-dev-ai]

2 issues found across 1 file

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="home-manager/services/docker-postgres/start-postgres.sh">

<violation number="1" location="home-manager/services/docker-postgres/start-postgres.sh:50">
P1: `POSTGRES_HOST_AUTH_METHOD=trust` removes authentication for host connections; with the published `5432` port this creates an unauthenticated database access path.</violation>

<violation number="2" location="home-manager/services/docker-postgres/start-postgres.sh:50">
P1: Setting `POSTGRES_HOST_AUTH_METHOD=trust` removes all authentication, but the port mapping on line 47 (`-p "${HOST_PORT}:${CONTAINER_PORT}"`) binds to `0.0.0.0` by default, exposing the database to the entire network without credentials. Restrict the bind address to localhost: `-p "127.0.0.1:${HOST_PORT}:${CONTAINER_PORT}"`</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[cubic-dev-ai]

P1: POSTGRES_HOST_AUTH_METHOD=trust removes authentication for host connections; with the published 5432 port this creates an unauthenticated database access path.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At home-manager/services/docker-postgres/start-postgres.sh, line 50:

<comment>`POSTGRES_HOST_AUTH_METHOD=trust` removes authentication for host connections; with the published `5432` port this creates an unauthenticated database access path.</comment>

<file context>
@@ -47,6 +47,7 @@ ensure_container() {
       -p "${HOST_PORT}:${CONTAINER_PORT}" \
       -e POSTGRES_DB=trails_api \
       -e POSTGRES_PASSWORD=postgres \
+      -e POSTGRES_HOST_AUTH_METHOD=trust \
       "$IMAGE"
     log "Container '$CONTAINER_NAME' created and started"
</file context>

Suggested change

	-e POSTGRES_HOST_AUTH_METHOD=trust \
	-e POSTGRES_HOST_AUTH_METHOD=scram-sha-256 \

[cubic-dev-ai]

P1: Setting POSTGRES_HOST_AUTH_METHOD=trust removes all authentication, but the port mapping on line 47 (-p "${HOST_PORT}:${CONTAINER_PORT}") binds to 0.0.0.0 by default, exposing the database to the entire network without credentials. Restrict the bind address to localhost: -p "127.0.0.1:${HOST_PORT}:${CONTAINER_PORT}"

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At home-manager/services/docker-postgres/start-postgres.sh, line 50:

<comment>Setting `POSTGRES_HOST_AUTH_METHOD=trust` removes all authentication, but the port mapping on line 47 (`-p "${HOST_PORT}:${CONTAINER_PORT}"`) binds to `0.0.0.0` by default, exposing the database to the entire network without credentials. Restrict the bind address to localhost: `-p "127.0.0.1:${HOST_PORT}:${CONTAINER_PORT}"`</comment>

<file context>
@@ -47,6 +47,7 @@ ensure_container() {
       -p "${HOST_PORT}:${CONTAINER_PORT}" \
       -e POSTGRES_DB=trails_api \
       -e POSTGRES_PASSWORD=postgres \
+      -e POSTGRES_HOST_AUTH_METHOD=trust \
       "$IMAGE"
     log "Container '$CONTAINER_NAME' created and started"
</file context>