logchef-dev

name

logchef-dev

description

Set up and manage the LogChef local development environment. Use this skill whenever the user mentions dev setup, dev environment, running logchef locally, starting the backend/frontend, docker compose, seeding data, resetting the dev database, or wants to get logchef running for development. Also trigger when the user asks about login credentials, Dex OIDC setup, ClickHouse dev tables, or sample log ingestion.

LogChef Dev Environment

Set up and run the LogChef development environment. LogChef is a Go (Fiber) backend + Vue 3 (TypeScript/Pinia) frontend for log analytics backed by ClickHouse.

Prerequisites

• Docker (for ClickHouse, Dex OIDC, Mailpit, webhook receiver)
• just task runner
• Go 1.24+, bun, sqlite3, and build tools on PATH
• vector on PATH for log ingestion

Quick Start (Full Setup)

Run these in order. Use tmux to keep services running.

1. Start infrastructure

cd /home/karan/Code/Personal/logchef
just dev-docker-detach

This starts: ClickHouse (:8123/:9000), Dex OIDC (:5556), Mailpit (:8025/:1025), webhook receiver (:8888).

Wait for ClickHouse to be healthy:

docker exec dev-clickhouse-local-1 clickhouse-client --query "SELECT 1"

2. Create ClickHouse tables

just dev-init-tables

3. Build the app

just build

4. Start backend (creates SQLite DB on first run)

Use tmux for persistent sessions:

tmux new-session -d -s logchef-dev -n backend
tmux send-keys -t logchef-dev:backend "cd /home/karan/Code/Personal/logchef && just run-backend" Enter

Wait for the backend to be ready:

curl -s http://localhost:8125/api/v1/health

5. Start frontend

tmux new-window -t logchef-dev -n frontend
tmux send-keys -t logchef-dev:frontend "cd /home/karan/Code/Personal/logchef/frontend && bun run dev" Enter

Frontend available at http://localhost:5173

6. Seed data (if needed)

The dev config uses provisioning (dev/provisioning.toml) to automatically create teams, sources, and link OIDC users on backend startup. If you need to seed the SQLite database with the dev@localhost API user:

cd /home/karan/Code/Personal/logchef
LOGCHEF_DB_PATH=./local.db ./dev/seed.sh

7. Ingest sample logs

cd /home/karan/Code/Personal/logchef/dev
vector -c http.toml & vector -c syslog.toml & sleep 60; kill %1 %2 2>/dev/null; wait

Or for continuous ingestion in background:

cd /home/karan/Code/Personal/logchef/dev
vector -c http.toml &
vector -c syslog.toml &

Alternatively, insert sample data directly:

docker exec dev-clickhouse-local-1 clickhouse-client --query "
INSERT INTO default.http SELECT
  now() - toIntervalSecond(number * 2 + rand() % 3),
  arrayElement(['api.logchef.dev','web.logchef.dev','cdn.logchef.dev'], (rand()%3)+1),
  arrayElement(['GET','POST','PUT','DELETE','GET','GET'], (rand()%6)+1),
  'HTTP/1.1', '-',
  arrayElement(['/api/v1/health','/api/v1/logs/query','/api/v1/teams','/api/v1/sources'], (rand()%4)+1),
  arrayElement([200,200,201,400,404,500], (rand()%6)+1),
  arrayElement(['admin','demo','-'], (rand()%3)+1),
  toUInt32(rand()%50000)
FROM numbers(5000)"

Login Credentials

Authentication uses Dex OIDC. Static passwords configured in dev/dex/config.yaml:

Email	Password	Role
[e-mail]	password	admin
[e-mail]	password	member

Key Config Files

File	Purpose
config.toml	Main app config (OIDC, server, SQLite path, provisioning)
dev/provisioning.toml	Declarative teams, sources, and user-team memberships
dev/dex/config.yaml	Dex OIDC provider config (static users, clients)
dev/docker-compose.yml	Infrastructure services
dev/init-clickhouse.sql	ClickHouse table schemas
dev/seed.sh	SQLite seed script (API tokens, dev user)
dev/http.toml	Vector config for HTTP demo logs
dev/syslog.toml	Vector config for syslog demo logs

Dev Config Notes

• config.toml has secure_cookie = false under [server] for HTTP dev
• Provisioning auto-links [e-mail] and [e-mail] to "Dev Team"
• ClickHouse tables: default.http (HTTP access logs) and default.syslogs (syslog format)
• SQLite database: local.db in project root

Services & Ports

Service	Port	Description
Backend API	8125	Go/Fiber HTTP server
Frontend (Vite)	5173	Vue 3 dev server
ClickHouse HTTP	8123	HTTP interface
ClickHouse Native	9000	Native protocol
Dex OIDC	5556	OpenID Connect provider (issuer: http://localhost:5556/dex)
Mailpit UI	8025	Email inbox for testing
Mailpit SMTP	1025	SMTP server
Webhook Receiver	8888	Test webhook endpoint

Common Operations

Reset everything

just dev-clean    # Stops docker, removes volumes, deletes local.db
just dev-setup    # Fresh start (docker + tables + seed)

Rebuild after code changes

# Backend only
just run-backend

# Frontend only (hot-reload, usually automatic)
cd frontend && bun run dev

# Full rebuild
just build

Check ClickHouse data

docker exec dev-clickhouse-local-1 clickhouse-client --query "SELECT count() FROM default.http"
docker exec dev-clickhouse-local-1 clickhouse-client --query "SELECT count() FROM default.syslogs"

Run checks before committing

just check

Frontend type check / build

cd frontend && bun run typecheck
cd frontend && bun run build

Troubleshooting

"address already in use" on port 8125

ss -tlnp | grep 8125 | grep -oP 'pid=\K[0-9]+' | xargs -r kill -9

Can't login / auth_error redirect

• Check Dex is running: curl http://localhost:5556/dex/.well-known/openid-configuration
• Verify config.toml has secure_cookie = false under [server]
• Verify OIDC URLs in config.toml match Dex config

"You don't have access to any teams"

• Check dev/provisioning.toml has the user's email in a team's members list
• Restart backend to trigger provisioning reconciliation

sqlite3 not found (during seed.sh)

• Install sqlite via your package manager (e.g. yay -S sqlite)
• Or set DB path: LOGCHEF_DB_PATH=./local.db ./dev/seed.sh

No logs in explorer

• Check ClickHouse has data: docker exec dev-clickhouse-local-1 clickhouse-client --query "SELECT count() FROM default.http"
• Ingest logs with vector or direct INSERT (see step 7 above)
• Check the time range in the UI covers when data was inserted