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coder/docs/admin/prometheus.md

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# Prometheus
Coder exposes many metrics which can be consumed by a Prometheus server, and
give insight into the current state of a live Coder deployment.
If you don't have an Prometheus server installed, you can follow the Prometheus
[Getting started](https://prometheus.io/docs/prometheus/latest/getting_started/)
guide.
## Enable Prometheus metrics
Coder server exports metrics via the HTTP endpoint, which can be enabled using
either the environment variable `CODER_PROMETHEUS_ENABLE` or the flag
`--prometheus-enable`.
The Prometheus endpoint address is `http://localhost:2112/` by default. You can
use either the environment variable `CODER_PROMETHEUS_ADDRESS` or the flag
`--prometheus-address <network-interface>:<port>` to select a different listen
address.
If `coder server --prometheus-enable` is started locally, you can preview the
metrics endpoint in your browser or by using curl:
```console
$ curl http://localhost:2112/
# HELP coderd_api_active_users_duration_hour The number of users that have been active within the last hour.
# TYPE coderd_api_active_users_duration_hour gauge
coderd_api_active_users_duration_hour 0
...
```
### Kubernetes deployment
The Prometheus endpoint can be enabled in the
[Helm chart's](https://github.com/coder/coder/tree/main/helm) `values.yml` by
setting the environment variable `CODER_PROMETHEUS_ADDRESS` to `0.0.0.0:2112`.
The environment variable `CODER_PROMETHEUS_ENABLE` will be enabled
automatically. A Service Endpoint will not be exposed; if you need to expose the
Prometheus port on a Service, (for example, to use a `ServiceMonitor`), create a
separate headless service instead:
```yaml
apiVersion: v1
kind: Service
metadata:
name: coder-prom
namespace: coder
spec:
clusterIP: None
ports:
- name: prom-http
port: 2112
protocol: TCP
targetPort: 2112
selector:
app.kubernetes.io/instance: coder
app.kubernetes.io/name: coder
type: ClusterIP
```
### Prometheus configuration
To allow Prometheus to scrape the Coder metrics, you will need to create a
`scape_config` in your `prometheus.yml` file, or in the Prometheus Helm chart
values. Below is an example `scrape_config`:
```yaml
scrape_configs:
- job_name: "coder"
scheme: "http"
static_configs:
- targets: ["<ip>:2112"] # replace with the the IP address of the Coder pod or server
labels:
apps: "coder"
```
To use the Kubernetes Prometheus operator to scrape metrics, you will need to
create a `ServiceMonitor` in your Coder deployment namespace. Below is an
example `ServiceMonitor`:
```yaml
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
name: coder-service-monitor
namespace: coder
spec:
endpoints:
- port: prometheus-http
interval: 10s
scrapeTimeout: 10s
selector:
matchLabels:
app.kubernetes.io/name: coder
```
## Available metrics
<!-- Code generated by 'make docs/admin/prometheus.md'. DO NOT EDIT -->
| Name | Type | Description | Labels |
| ------------------------------------------------------------- | --------- | -------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------- |
| `agent_scripts_executed_total` | counter | Total number of scripts executed by the Coder agent. Includes cron scheduled scripts. | `agent_name` `success` `template_name` `username` `workspace_name` |
| `coderd_agents_apps` | gauge | Agent applications with statuses. | `agent_name` `app_name` `health` `username` `workspace_name` |
| `coderd_agents_connection_latencies_seconds` | gauge | Agent connection latencies in seconds. | `agent_name` `derp_region` `preferred` `username` `workspace_name` |
| `coderd_agents_connections` | gauge | Agent connections with statuses. | `agent_name` `lifecycle_state` `status` `tailnet_node` `username` `workspace_name` |
| `coderd_agents_up` | gauge | The number of active agents per workspace. | `template_name` `username` `workspace_name` |
| `coderd_agentstats_connection_count` | gauge | The number of established connections by agent | `agent_name` `username` `workspace_name` |
| `coderd_agentstats_connection_median_latency_seconds` | gauge | The median agent connection latency | `agent_name` `username` `workspace_name` |
| `coderd_agentstats_rx_bytes` | gauge | Agent Rx bytes | `agent_name` `username` `workspace_name` |
| `coderd_agentstats_session_count_jetbrains` | gauge | The number of session established by JetBrains | `agent_name` `username` `workspace_name` |
| `coderd_agentstats_session_count_reconnecting_pty` | gauge | The number of session established by reconnecting PTY | `agent_name` `username` `workspace_name` |
| `coderd_agentstats_session_count_ssh` | gauge | The number of session established by SSH | `agent_name` `username` `workspace_name` |
| `coderd_agentstats_session_count_vscode` | gauge | The number of session established by VSCode | `agent_name` `username` `workspace_name` |
| `coderd_agentstats_startup_script_seconds` | gauge | The number of seconds the startup script took to execute. | `agent_name` `success` `template_name` `username` `workspace_name` |
| `coderd_agentstats_tx_bytes` | gauge | Agent Tx bytes | `agent_name` `username` `workspace_name` |
| `coderd_api_active_users_duration_hour` | gauge | The number of users that have been active within the last hour. | |
| `coderd_api_concurrent_requests` | gauge | The number of concurrent API requests. | |
| `coderd_api_concurrent_websockets` | gauge | The total number of concurrent API websockets. | |
| `coderd_api_request_latencies_seconds` | histogram | Latency distribution of requests in seconds. | `method` `path` |
| `coderd_api_requests_processed_total` | counter | The total number of processed API requests | `code` `method` `path` |
| `coderd_api_websocket_durations_seconds` | histogram | Websocket duration distribution of requests in seconds. | `path` |
| `coderd_api_workspace_latest_build` | gauge | The latest workspace builds with a status. | `status` |
| `coderd_api_workspace_latest_build_total` | gauge | DEPRECATED: use coderd_api_workspace_latest_build instead | `status` |
| `coderd_insights_applications_usage_seconds` | gauge | The application usage per template. | `application_name` `slug` `template_name` |
| `coderd_insights_parameters` | gauge | The parameter usage per template. | `parameter_name` `parameter_type` `parameter_value` `template_name` |
| `coderd_insights_templates_active_users` | gauge | The number of active users of the template. | `template_name` |
| `coderd_license_active_users` | gauge | The number of active users. | |
| `coderd_license_limit_users` | gauge | The user seats limit based on the active Coder license. | |
| `coderd_license_user_limit_enabled` | gauge | Returns 1 if the current license enforces the user limit. | |
| `coderd_metrics_collector_agents_execution_seconds` | histogram | Histogram for duration of agents metrics collection in seconds. | |
| `coderd_oauth2_external_requests_rate_limit` | gauge | The total number of allowed requests per interval. | `name` `resource` |
| `coderd_oauth2_external_requests_rate_limit_next_reset_unix` | gauge | Unix timestamp of the next interval | `name` `resource` |
| `coderd_oauth2_external_requests_rate_limit_remaining` | gauge | The remaining number of allowed requests in this interval. | `name` `resource` |
| `coderd_oauth2_external_requests_rate_limit_reset_in_seconds` | gauge | Seconds until the next interval | `name` `resource` |
| `coderd_oauth2_external_requests_rate_limit_total` | gauge | DEPRECATED: use coderd_oauth2_external_requests_rate_limit instead | `name` `resource` |
| `coderd_oauth2_external_requests_rate_limit_used` | gauge | The number of requests made in this interval. | `name` `resource` |
| `coderd_oauth2_external_requests_total` | counter | The total number of api calls made to external oauth2 providers. 'status_code' will be 0 if the request failed with no response. | `name` `source` `status_code` |
| `coderd_provisionerd_job_timings_seconds` | histogram | The provisioner job time duration in seconds. | `provisioner` `status` |
| `coderd_provisionerd_jobs_current` | gauge | The number of currently running provisioner jobs. | `provisioner` |
| `coderd_workspace_builds_total` | counter | The number of workspaces started, updated, or deleted. | `action` `owner_email` `status` `template_name` `template_version` `workspace_name` |
| `go_gc_duration_seconds` | summary | A summary of the pause duration of garbage collection cycles. | |
| `go_goroutines` | gauge | Number of goroutines that currently exist. | |
| `go_info` | gauge | Information about the Go environment. | `version` |
| `go_memstats_alloc_bytes` | gauge | Number of bytes allocated and still in use. | |
| `go_memstats_alloc_bytes_total` | counter | Total number of bytes allocated, even if freed. | |
| `go_memstats_buck_hash_sys_bytes` | gauge | Number of bytes used by the profiling bucket hash table. | |
| `go_memstats_frees_total` | counter | Total number of frees. | |
| `go_memstats_gc_sys_bytes` | gauge | Number of bytes used for garbage collection system metadata. | |
| `go_memstats_heap_alloc_bytes` | gauge | Number of heap bytes allocated and still in use. | |
| `go_memstats_heap_idle_bytes` | gauge | Number of heap bytes waiting to be used. | |
| `go_memstats_heap_inuse_bytes` | gauge | Number of heap bytes that are in use. | |
| `go_memstats_heap_objects` | gauge | Number of allocated objects. | |
| `go_memstats_heap_released_bytes` | gauge | Number of heap bytes released to OS. | |
| `go_memstats_heap_sys_bytes` | gauge | Number of heap bytes obtained from system. | |
| `go_memstats_last_gc_time_seconds` | gauge | Number of seconds since 1970 of last garbage collection. | |
| `go_memstats_lookups_total` | counter | Total number of pointer lookups. | |
| `go_memstats_mallocs_total` | counter | Total number of mallocs. | |
| `go_memstats_mcache_inuse_bytes` | gauge | Number of bytes in use by mcache structures. | |
| `go_memstats_mcache_sys_bytes` | gauge | Number of bytes used for mcache structures obtained from system. | |
| `go_memstats_mspan_inuse_bytes` | gauge | Number of bytes in use by mspan structures. | |
| `go_memstats_mspan_sys_bytes` | gauge | Number of bytes used for mspan structures obtained from system. | |
| `go_memstats_next_gc_bytes` | gauge | Number of heap bytes when next garbage collection will take place. | |
| `go_memstats_other_sys_bytes` | gauge | Number of bytes used for other system allocations. | |
| `go_memstats_stack_inuse_bytes` | gauge | Number of bytes in use by the stack allocator. | |
| `go_memstats_stack_sys_bytes` | gauge | Number of bytes obtained from system for stack allocator. | |
| `go_memstats_sys_bytes` | gauge | Number of bytes obtained from system. | |
| `go_threads` | gauge | Number of OS threads created. | |
| `process_cpu_seconds_total` | counter | Total user and system CPU time spent in seconds. | |
| `process_max_fds` | gauge | Maximum number of open file descriptors. | |
| `process_open_fds` | gauge | Number of open file descriptors. | |
| `process_resident_memory_bytes` | gauge | Resident memory size in bytes. | |
| `process_start_time_seconds` | gauge | Start time of the process since unix epoch in seconds. | |
| `process_virtual_memory_bytes` | gauge | Virtual memory size in bytes. | |
| `process_virtual_memory_max_bytes` | gauge | Maximum amount of virtual memory available in bytes. | |
| `promhttp_metric_handler_requests_in_flight` | gauge | Current number of scrapes being served. | |
| `promhttp_metric_handler_requests_total` | counter | Total number of scrapes by HTTP status code. | `code` |
<!-- End generated by 'make docs/admin/prometheus.md'. -->
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