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Troubleshoot Docker Compose startup errors. Use when encountering network conflicts, container name collisions, orphaned containers, or other Docker setup issues.
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| name | docker-troubleshoot |
| description | Troubleshoot Docker Compose startup errors. Use when encountering network conflicts, container name collisions, orphaned containers, or other Docker setup issues. |
Error message:
failed to create network: Error response from daemon: invalid pool request: Pool overlaps with other one on this address space
Cause: The subnet defined in docker-compose conflicts with an existing Docker network.
Fix:
docker-compose.dev.ymlnetworks section at the bottom172.28.0.0/16 instead of 172.20.0.0/16)ipv4_address values for each service to match the new subnetAlternative: Clean up unused networks with:
docker network prune
Error message:
Error response from daemon: Conflict. The container name "/container-name" is already in use
Cause: Orphaned containers from a previous run weren't cleaned up properly.
Fix: Remove the conflicting containers:
docker rm -f postgres-dev migrate-dev server-dev web-dev nginx-dev
Or remove all stopped containers:
docker container prune
When Docker state is severely corrupted:
docker stop $(docker ps -aq)
docker rm $(docker ps -aq)
docker network rm caliber-fleet-management_app_network
docker system prune -f
docker ps -a # List all containers
docker network ls # List all networks
docker network inspect <name> # Inspect network subnet