deployment-automation

Deployment Automation

Manage Docker Compose deployments, container lifecycle, image updates, and rollbacks.

Quick Start

Deploy a Compose Stack

# Start services
docker compose up -d

# Start with rebuild
docker compose up -d --build

# Check status
docker compose ps

Update a Running Service

# Pull latest images
docker compose pull

# Recreate with new images
docker compose up -d --remove-orphans

# Verify health
docker compose ps
docker compose logs --tail=20 <service>

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Docker Compose Management

Lifecycle Commands

# Start all services
docker compose up -d

# Stop all services (preserves volumes)
docker compose down

# Stop and remove volumes (DESTRUCTIVE)
docker compose down -v

# Restart a specific service
docker compose restart <service>

# Scale a service
docker compose up -d --scale <service>=3

# View logs
docker compose logs -f <service>
docker compose logs --tail=50 <service>

Stack Health Check

# List all containers with status
docker compose ps --format "table {{.Name}}\t{{.Status}}\t{{.Ports}}"

# Check resource usage
docker stats --no-stream --format "table {{.Name}}\t{{.CPUPerc}}\t{{.MemUsage}}"

# Inspect a specific container
docker inspect <container> | jq '.[0].State'

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Image Update Workflow

Safe update process with rollback path:

Step 1: Pre-Update Checks

# Record current state
docker compose ps > /tmp/pre-update-state.txt
docker compose config --images > /tmp/current-images.txt

# Check current image digests
docker compose images --format "table {{.Repository}}\t{{.Tag}}\t{{.ID}}"

Step 2: Pull New Images

# Pull latest images
docker compose pull

# Compare image IDs (see if anything changed)
docker compose images --format "table {{.Repository}}\t{{.Tag}}\t{{.ID}}"

Step 3: Deploy Update

# Recreate containers with new images
docker compose up -d --remove-orphans

# Wait for services to stabilize
sleep 10

# Verify all containers are healthy
docker compose ps