This document outlines all possible conversion details regarding docker-compose.yaml values to Kubernetes / OpenShift artifacts. This covers major versions of Docker Compose such as 1, 2 and 3.
The current table covers all current possible Docker Compose keys.
Note: We don't support anything 3.4 and above at the moment.
Glossary:
- ✓: Converts
- -: Not in this Docker Compose Version
- n: Not yet implemented
- x: Not applicable / no 1-1 conversion
| Keys | V1 | V2 | V3 | Kubernetes / OpenShift | Notes |
|---|---|---|---|---|---|
| build | ✓ | ✓ | ✓ | Builds/Pushes to Docker repository. See --build parameter |
|
| build: context | ✓ | ✓ | ✓ | ||
| build: dockerfile | ✓ | ✓ | ✓ | ||
| build: args | n | n | n | ||
| build: cache_from | - | - | n | ||
| cap_add, cap_drop | ✓ | ✓ | ✓ | Pod.Spec.Container.SecurityContext.Capabilities.Add/Drop | |
| command | ✓ | ✓ | ✓ | Pod.Spec.Container.Command | |
| configs | n | n | ✓ | ||
| configs: short-syntax | n | n | n | Only create configMap | |
| configs: long-syntax | n | n | ✓ | If target path is /, ignore this and only create configMap | |
| cgroup_parent | x | x | x | Not supported within Kubernetes. See issue kubernetes/kubernetes#11986 | |
| container_name | ✓ | ✓ | ✓ | Metadata.Name + Deployment.Spec.Containers.Name | |
| credential_spec | x | x | x | Only applicable to Windows containers | |
| deploy | - | - | ✓ | ||
| deploy: mode | - | - | ✓ | ||
| deploy: replicas | - | - | ✓ | Deployment.Spec.Replicas / DeploymentConfig.Spec.Replicas | |
| deploy: placement | - | - | ✓ | Pod.Spec.NodeSelector | |
| deploy: update_config | - | - | n | ||
| deploy: resources | - | - | ✓ | Containers.Resources.Limits.Memory / Containers.Resources.Limits.CPU | Support for memory as well as cpu |
| deploy: restart_policy | - | - | ✓ | Pod generation | This generated a Pod, see the user guide on restart |
| deploy: labels | - | - | n | ||
| devices | x | x | x | Not supported within Kubernetes, See issue kubernetes/kubernetes#5607 | |
| depends_on | x | x | x | ||
| dns | x | x | x | Not used within Kubernetes. Kubernetes uses a managed DNS server | |
| dns_search | x | x | x | See dns key |
|
| domainname | ✓ | ✓ | ✓ | Pod.Spec.SubDomain | |
| tmpfs | ✓ | ✓ | ✓ | Pod.Spec.Containers.Volumes.EmptyDir | Creates emptyDirvolume with medium set to Memory & mounts given directory inside container |
| entrypoint | ✓ | ✓ | ✓ | Pod.Spec.Container.Command | Same as command |
| env_file | n | n | ✓ | ||
| environment | ✓ | ✓ | ✓ | Pod.Spec.Container.Env | |
| expose | ✓ | ✓ | ✓ | Service.Spec.Ports | |
| endpoint_mode | n | n | ✓ | ||
| extends | ✓ | ✓ | ✓ | Extends by utilizing the same image supplied | |
| external_links | x | x | x | Kubernetes uses a flat-structure for all containers and thus external_links does not have a 1-1 conversion | |
| extra_hosts | n | n | n | ||
| group_add | ✓ | ✓ | ✓ | ||
| healthcheck | - | n | ✓ | ||
| hostname | ✓ | ✓ | ✓ | Pod.Spec.HostName | |
| image | ✓ | ✓ | ✓ | Deployment.Spec.Containers.Image | |
| isolation | x | x | x | Not applicable as this applies to Windows with HyperV support | |
| labels | ✓ | ✓ | ✓ | Metadata.Annotations | |
| links | x | x | x | All containers in the same pod are accessible in Kubernetes | |
| logging | x | x | x | Kubernetes has built-in logging support at the node-level | |
| network_mode | x | x | x | Kubernetes uses its own cluster networking | |
| networks | x | x | x | See networks key |
|
| networks: aliases | x | x | x | See networks key |
|
| networks: addresses | x | x | x | See networks key |
|
| pid | ✓ | ✓ | ✓ | Pod.Spec.HostPID | |
| ports | ✓ | ✓ | ✓ | Service.Spec.Ports | |
| ports: short-syntax | ✓ | ✓ | ✓ | Service.Spec.Ports | |
| ports: long-syntax | - | - | ✓ | Service.Spec.Ports | |
| secrets | - | - | n | ||
| secrets: short-syntax | - | - | n | ||
| secrets: long-syntax | - | - | n | ||
| security_opt | x | x | x | Kubernetes uses its own container naming scheme | |
| stop_grace_period | ✓ | ✓ | ✓ | Pod.Spec.TerminationGracePeriodSeconds | |
| stop_signal | x | x | x | Not supported within Kubernetes. See issue kubernetes/kubernetes#30051 | |
| sysctls | n | n | n | ||
| ulimits | x | x | x | Not supported within Kubernetes. See issue kubernetes/kubernetes#3595 | |
| userns_mode | x | x | x | Not supported within Kubernetes and ignored in Docker Compose Version 3 | |
| volumes | ✓ | ✓ | ✓ | PersistentVolumeClaim | Creates a PersistentVolumeClaim. Can only be created if there is already a PersistentVolume within the cluster |
| volumes: short-syntax | ✓ | ✓ | ✓ | PersistentVolumeClaim | Creates a PersistentVolumeClaim. Can only be created if there is already a PersistentVolume within the cluster |
| volumes: long-syntax | - | - | ✓ | PersistentVolumeClaim | Creates a PersistentVolumeClaim. Can only be created if there is already a PersistentVolume within the cluster |
| restart | ✓ | ✓ | ✓ | ||
| Volume | x | x | x | ||
| driver | x | x | x | ||
| driver_opts | x | x | x | ||
| external | x | x | x | ||
| labels | x | x | x | ||
| Network | x | x | x | ||
| driver | x | x | x | ||
| driver_opts | x | x | x | ||
| enable_ipv6 | x | x | x | ||
| ipam | x | x | x | ||
| internal | x | x | x | ||
| labels | x | x | x | ||
| external | x | x | x |