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diff --git a/src/go/collectors/go.d.plugin/modules/docker_engine/integrations/docker_engine.md b/src/go/collectors/go.d.plugin/modules/docker_engine/integrations/docker_engine.md new file mode 100644 index 000000000..bf1d91129 --- /dev/null +++ b/src/go/collectors/go.d.plugin/modules/docker_engine/integrations/docker_engine.md @@ -0,0 +1,229 @@ +<!--startmeta +custom_edit_url: "https://github.com/netdata/netdata/edit/master/src/go/collectors/go.d.plugin/modules/docker_engine/README.md" +meta_yaml: "https://github.com/netdata/netdata/edit/master/src/go/collectors/go.d.plugin/modules/docker_engine/metadata.yaml" +sidebar_label: "Docker Engine" +learn_status: "Published" +learn_rel_path: "Collecting Metrics/Containers and VMs" +most_popular: False +message: "DO NOT EDIT THIS FILE DIRECTLY, IT IS GENERATED BY THE COLLECTOR'S metadata.yaml FILE" +endmeta--> + +# Docker Engine + + +<img src="https://netdata.cloud/img/docker.svg" width="150"/> + + +Plugin: go.d.plugin +Module: docker_engine + +<img src="https://img.shields.io/badge/maintained%20by-Netdata-%2300ab44" /> + +## Overview + +This collector monitors the activity and health of Docker Engine and Docker Swarm. + + +The [built-in](https://docs.docker.com/config/daemon/prometheus/) Prometheus exporter is used to get the metrics. + + +This collector is supported on all platforms. + +This collector supports collecting metrics from multiple instances of this integration, including remote instances. + + +### Default Behavior + +#### Auto-Detection + +It discovers instances running on localhost by attempting to connect to a known Docker TCP socket: `http://127.0.0.1:9323/metrics`. + + +#### Limits + +The default configuration for this integration does not impose any limits on data collection. + +#### Performance Impact + +The default configuration for this integration is not expected to impose a significant performance impact on the system. + + +## Metrics + +Metrics grouped by *scope*. + +The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels. + + + +### Per Docker Engine instance + +These metrics refer to the entire monitored application. + +This scope has no labels. + +Metrics: + +| Metric | Dimensions | Unit | +|:------|:----------|:----| +| docker_engine.engine_daemon_container_actions | changes, commit, create, delete, start | actions/s | +| docker_engine.engine_daemon_container_states_containers | running, paused, stopped | containers | +| docker_engine.builder_builds_failed_total | build_canceled, build_target_not_reachable_error, command_not_supported_error, dockerfile_empty_error, dockerfile_syntax_error, error_processing_commands_error, missing_onbuild_arguments_error, unknown_instruction_error | fails/s | +| docker_engine.engine_daemon_health_checks_failed_total | fails | events/s | +| docker_engine.swarm_manager_leader | is_leader | bool | +| docker_engine.swarm_manager_object_store | nodes, services, tasks, networks, secrets, configs | objects | +| docker_engine.swarm_manager_nodes_per_state | ready, down, unknown, disconnected | nodes | +| docker_engine.swarm_manager_tasks_per_state | running, failed, ready, rejected, starting, shutdown, new, orphaned, preparing, pending, complete, remove, accepted, assigned | tasks | + + + +## Alerts + +There are no alerts configured by default for this integration. + + +## Setup + +### Prerequisites + +#### Enable built-in Prometheus exporter + +To enable built-in Prometheus exporter, follow the [official documentation](https://docs.docker.com/config/daemon/prometheus/#configure-docker). + + + +### Configuration + +#### File + +The configuration file name for this integration is `go.d/docker_engine.conf`. + + +You can edit the configuration file using the `edit-config` script from the +Netdata [config directory](/docs/netdata-agent/configuration/README.md#the-netdata-config-directory). + +```bash +cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata +sudo ./edit-config go.d/docker_engine.conf +``` +#### Options + +The following options can be defined globally: update_every, autodetection_retry. + + +<details open><summary>Config options</summary> + +| Name | Description | Default | Required | +|:----|:-----------|:-------|:--------:| +| update_every | Data collection frequency. | 1 | no | +| autodetection_retry | Recheck interval in seconds. Zero means no recheck will be scheduled. | 0 | no | +| url | Server URL. | http://127.0.0.1:9323/metrics | yes | +| username | Username for basic HTTP authentication. | | no | +| password | Password for basic HTTP authentication. | | no | +| proxy_url | Proxy URL. | | no | +| proxy_username | Username for proxy basic HTTP authentication. | | no | +| proxy_password | Password for proxy basic HTTP authentication. | | no | +| timeout | HTTP request timeout. | 1 | no | +| method | HTTP request method. | GET | no | +| body | HTTP request body. | | no | +| headers | HTTP request headers. | | no | +| not_follow_redirects | Redirect handling policy. Controls whether the client follows redirects. | no | no | +| tls_skip_verify | Server certificate chain and hostname validation policy. Controls whether the client performs this check. | no | no | +| tls_ca | Certification authority that the client uses when verifying the server's certificates. | | no | +| tls_cert | Client TLS certificate. | | no | +| tls_key | Client TLS key. | | no | + +</details> + +#### Examples + +##### Basic + +A basic example configuration. + +```yaml +jobs: + - name: local + url: http://127.0.0.1:9323/metrics + +``` +##### HTTP authentication + +Basic HTTP authentication. + +<details open><summary>Config</summary> + +```yaml +jobs: + - name: local + url: http://127.0.0.1:9323/metrics + username: username + password: password + +``` +</details> + +##### HTTPS with self-signed certificate + +Configuration with enabled HTTPS and self-signed certificate. + +<details open><summary>Config</summary> + +```yaml +jobs: + - name: local + url: http://127.0.0.1:9323/metrics + tls_skip_verify: yes + +``` +</details> + +##### Multi-instance + +> **Note**: When you define multiple jobs, their names must be unique. + +Collecting metrics from local and remote instances. + + +<details open><summary>Config</summary> + +```yaml +jobs: + - name: local + url: http://127.0.0.1:9323/metrics + + - name: remote + url: http://192.0.2.1:9323/metrics + +``` +</details> + + + +## Troubleshooting + +### Debug Mode + +To troubleshoot issues with the `docker_engine` collector, run the `go.d.plugin` with the debug option enabled. The output +should give you clues as to why the collector isn't working. + +- Navigate to the `plugins.d` directory, usually at `/usr/libexec/netdata/plugins.d/`. If that's not the case on + your system, open `netdata.conf` and look for the `plugins` setting under `[directories]`. + + ```bash + cd /usr/libexec/netdata/plugins.d/ + ``` + +- Switch to the `netdata` user. + + ```bash + sudo -u netdata -s + ``` + +- Run the `go.d.plugin` to debug the collector: + + ```bash + ./go.d.plugin -d -m docker_engine + ``` + + |