# 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://1999659500-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MHqOSW6on5cHbtwcSH6%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}}" ``` --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://imarslo.gitbook.io/handbook/virtualization/docker/show.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.