# show info * [docker ps](#docker-ps) * [docker list](#docker-list) * [docker inspect](#docker-inspect) * [show docker image](#show-docker-image) * [show entrypoint](#show-entrypoint) * [list environment](#list-environment) * [check mounts](#check-mounts) * [log path](#log-path) * [get full container ID](#get-full-container-id) * [check repo tag](#check-repo-tag) * [docker stats](#docker-stats) * [docker system](#docker-system) * [df](#df) * [events](#events) * [prune](#prune) * [ps format](#ps-format) > \[!TIP|label:references:] > > * [Format command and log output](https://docs.docker.com/config/formatting/) > * [Format the output (--format)](https://docs.docker.com/engine/reference/commandline/ps/#format) ### docker ps | PLACEHOLDER | DESCRIPTION | | ------------- | --------------------------------------------------------------------------------------------- | | `.ID` | Container ID | | `.Image` | Image ID | | `.Command` | Quoted command | | `.CreatedAt` | Time when the container was created. | | `.RunningFor` | Elapsed time since the container was started. | | `.Ports` | Exposed ports. | | `.State` | Container status (for example; "created", "running", "exited"). | | `.Status` | Container status with details about duration and health-status. | | `.Size` | Container disk size. | | `.Names` | Container names. | | `.Labels` | All labels assigned to the container. | | `.Label` | Value of a specific label for this container. For example '{{.Label "com.docker.swarm.cpu"}}' | | `.Mounts` | Names of the volumes mounted in this container. | | `.Networks` | Names of the networks attached to this container. | * original ```bash $ docker ps -a --filter 'status=exited' | head -2 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 5e5f59e3aff3 3129a2ca29d7 "/configmap-reload -…" 2 months ago Exited (137) 2 months ago k8s_rules-configmap-reloader_prometheus-k8s-0_monitoring_aeba5164-dda4-11ec-b785-0cc47aff0b92_1 ``` * via foramt ```bash $ docker ps -f 'status=exited' --format 'table {{.ID}}\t{{.Image}}\t{{.Command}}\t{{.RunningFor}}\t{{.Status}}\t{{.Ports}}\t{{.Names}}' | head -2 CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 5e5f59e3aff3 3129a2ca29d7 "/configmap-reload -…" 2 months ago Exited (137) 2 months ago k8s_rules-configmap-reloader_prometheus-k8s-0_monitoring_aeba5164-dda4-11ec-b785-0cc47aff0b92_1 ``` ### docker list * sort by image size ```bash $ docker images --format "{{.ID}}\t{{.Size}}\t{{.Repository}}:{{.Tag}}" | sort -k 2 -hr ``` ### docker inspect {% hint style="info" %} > reference: > > * [docker inspect](https://docs.docker.com/engine/reference/commandline/inspect/) > * [See full command of running/stopped container in Docker](https://stackoverflow.com/a/27380853/2940319) > * [Docker remove TAG images](https://stackoverflow.com/a/33913711/2940319) > * [Return container settings in JSON format](https://megamorf.gitlab.io/2021/03/14/return-container-settings-in-json-format/) > {% endhint %} #### show docker image ```bash $ docker inspect 5b4299c238e5 -f '{{ .Config.Image }}' ``` #### show entrypoint ```bash $ docker inspect -f "{{.Path}} {{.Args}} ({{.Id}})" $(docker ps -a -q) ``` * or list only ```bash $ docker inspect -f "{{.Path}} {{.Args}} ({{.Id}})" ``` * i.e.: ```bash $ docker inspect -f "{{.Path}} {{.Args}} ({{.Id}})" bf6f6d166b88 /usr/bin/tini [-- /usr/local/bin/jenkins.sh] (bf6f6d166b88ed9695b89d859ddc1feb7d2deaf07c64352ad479645b707e0157) ``` #### [list environment](https://stackoverflow.com/a/43875774/2940319) ```bash $ docker inspect \ --format='{{ .Name }}{{ printf "\n" }}{{ range .Config.Env }}{{ printf "\n\t" }}{{ printf . }}{{ end }}' \ ``` #### [check mounts](https://stackoverflow.com/a/68096235/2940319) ```bash $ docker inspect \ --format='{{ .Name }}{{ printf "\n" }}{{ range .HostConfig.Binds }}{{ printf "\n\t" }}{{ printf . }}{{ end }}' \ ``` * i.e.: ```bash $ docker inspect \ --format='{{ .Name }}{{ printf ":\n" }}{{ range .HostConfig.Binds }}{{ printf "\n\t" }}{{ printf . }}{{ end }}' \ /k8s_jnlp-s31sk-1rvd0_060d5260-8b42-11ed-9c0f-b883034b82d0_0: /var/lib/kubelet/pods/060d5260-8b42-11ed-9c0f-b883034b82d0/volumes/kubernetes.io~empty-dir/workspace-volume:/home/marslo /var/lib/kubelet/pods/060d5260-8b42-11ed-9c0f-b883034b82d0/volumes/kubernetes.io~secret/default-token-m6bqf:/var/run/secrets/kubernetes.io/serviceaccount:ro /var/lib/kubelet/pods/060d5260-8b42-11ed-9c0f-b883034b82d0/etc-hosts:/etc/hosts /var/lib/kubelet/pods/060d5260-8b42-11ed-9c0f-b883034b82d0/containers/jnlp/1d0c9319:/dev/termination-log ``` * or ```bash $ docker inspect \ -f '{{ .Name }}{{ printf ":\n" }}{{ range .Mounts }}{{ printf "\n\t" }}{{ .Type }}{{ printf "\t" }}{{ if eq .Type "bind" }}{{ .Source }}{{ end }}{{ .Name }} => {{ .Destination }}{{ end }}{{ printf "\n" }}' \ 8e59c4dd2f65 /k8s_jnlp-s31sk-1rvd0_060d5260-8b42-11ed-9c0f-b883034b82d0_0: bind /var/lib/kubelet/pods/060d5260-8b42-11ed-9c0f-b883034b82d0/volumes/kubernetes.io~secret/default-token-m6bqf => /var/run/secrets/kubernetes.io/serviceaccount volume 6c18dbf9b131a9fb245fe896a56b4f4db33f3f32eb1f2b3fcc10c5e50baf7e4f => /home/devops/.jenkins bind /var/lib/kubelet/pods/060d5260-8b42-11ed-9c0f-b883034b82d0/volumes/kubernetes.io~empty-dir/workspace-volume => /home/devops bind /var/lib/kubelet/pods/060d5260-8b42-11ed-9c0f-b883034b82d0/etc-hosts => /etc/hosts bind /var/lib/kubelet/pods/060d5260-8b42-11ed-9c0f-b883034b82d0/containers/jnlp/1d0c9319 => /dev/termination-log volume 69c10d1602dc0af1ad305f21ec74f5c568a735c18c64b7b0cb5e04120159e2bd => /home/devops/.ssh volume 02668c553b25d1b3f5ba51c85885fab6abf74296a4c0393d35006737d543a174 => /home/devops/agent ``` * or ```bash $ docker container inspect \ -f '{{ range .Mounts }}{{ .Type }} : {{ .Source }}:{{ .Destination }}{{ println }}{{ end }}' \ ``` #### [log path](https://stackoverflow.com/a/41147654/2940319) > \[!TIP] [how to redirect docker logs to a single file](https://www.scalyr.com/blog/how-to-redirect-docker-logs-to-a-single-file) ```bash $ docker inspect --format='{{.LogPath}}' containername ``` #### [get full container ID](https://forums.docker.com/t/how-to-get-a-full-id-of-a-certain-container/2418/3) ```bash $ docker inspect --format="{{.Id}}" d40df87b2f87 d40df87b2f87261152d2541b870c6b801c031f8df969e4bd3e9b3c607e6c1698 ``` #### [check repo tag](https://stackoverflow.com/a/33913711/2940319) ```bash $ docker images -q -a | xargs docker inspect --format='{{.Id}}{{range $rt := .RepoTags}} {{$rt}} {{end}}' ``` ### docker stats {% hint style="info" %} > reference: > > * [Monitor the Resource Usage of Docker Containers](https://www.cloudsavvyit.com/13715/how-to-monitor-the-resource-usage-of-docker-containers/) > * [See Memory and CPU Usage for All Your Docker Containers](https://dev.to/rubberduck/how-to-see-memory-and-cpu-usage-for-all-your-docker-containers) > * [How to See Memory and CPU Usage for All Your Docker Containers (on CentOS 6)](https://dev.to/rubberduck/how-to-see-memory-and-cpu-usage-for-all-your-docker-containers) > * [How to Monitor the Resource Usage of Docker Containers](https://www.howtogeek.com/devops/how-to-monitor-the-resource-usage-of-docker-containers/) > {% endhint %} ```bash $ docker stats --format "table {{.Name}}\t{{.CPUPerc}}\t{{.MemUsage}}" # or show all $ docker ps -q | xargs docker stats --no-stream ``` ![docker status](https://4276369325-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpuTw6o3ALq0J3Uf7ELc7%2Fuploads%2Fgit-blob-3ba2ba8da9b6154af22e23f976291f4c4ddcf27a%2Fdocker-stat-resource-1.gif?alt=media) ### docker system #### [df](https://docs.docker.com/engine/reference/commandline/system_df/) ```bash $ docker system df TYPE TOTAL ACTIVE SIZE RECLAIMABLE Images 5 1 9.81GB 8.384GB (85%) Containers 1 0 0B 0B Local Volumes 4449 4 172.2GB 156.7GB (90%) Build Cache 0 0 0B 0B ``` #### [events](https://docs.docker.com/engine/reference/commandline/system_events/) ```bash $ docker system events --since '24h' ``` #### [prune](https://docs.docker.com/engine/reference/commandline/system_prune/) ```bash $ docker system prune --all WARNING! This will remove: - all stopped containers - all networks not used by at least one container - all dangling images - all build cache Are you sure you want to continue? [y/N] y # prune volume only $ docker system prune --volumes ``` ### [ps format](https://docs.docker.com/engine/reference/commandline/ps/#formatting) ```bash $ docker ps -a --format 'CONTAINER ID : {{.ID}} | Name: {{.Names}} | Image: {{.Image}} | Ports: {{.Ports}}' ``` * id and command ```bash $ docker ps --no-trunc --format "{{.ID}}: {{.Command}}" ``` * id, image and commands ```bash $ docker ps --no-trunc --format "{{.ID}}: {{.Command}}: {{.Image}}" ``` * [log path](https://stackoverflow.com/a/41147654/2940319) > \[!NOTE] [how to redirect docker logs to a single file](https://www.scalyr.com/blog/how-to-redirect-docker-logs-to-a-single-file) ```bash $ docker inspect --format='{{.LogPath}}' containername ``` * [with table](https://stackoverflow.com/q/34748747/2940319) ```bash $ docker ps --format "table {{.Image}}\t{{.Names}}\t{{.Ports}}\t{{.Status}}" ```