Skip to content

deepthawtz/consul_exporter

 
 

Repository files navigation

Consul Exporter Build Status

CircleCI Docker Repository on Quay Docker Pulls

Export Consul service health to Prometheus.

To run it:

make
./consul_exporter [flags]

Exported Metrics

Metric Meaning Labels
consul_up Was the last query of Consul successful
consul_raft_peers How many peers (servers) are in the Raft cluster
consul_serf_lan_members How many members are in the cluster
consul_catalog_services How many services are in the cluster
consul_catalog_service_node_healthy Is this service healthy on this node service, node
consul_health_node_status Status of health checks associated with a node check, node
consul_health_service_status Status of health checks associated with a service check, node, service
consul_catalog_kv The values for selected keys in Consul's key/value catalog. Keys with non-numeric values are omitted key

Flags

./consul_exporter --help
  • consul.server: Address (host and port) of the Consul instance we should connect to. This could be a local agent (localhost:8500, for instance), or the address of a Consul server.
  • consul.health-summary: Collects information about each registered service and exports consul_catalog_service_node_healthy. This requires n+1 Consul API queries to gather all information about each service. Health check information are available via consul_health_service_status as well, but only for services which have a health check configured. Defaults to true.
  • web.listen-address: Address to listen on for web interface and telemetry.
  • web.telemetry-path: Path under which to expose metrics.
  • log.level: Logging level. info by default.

Key/Value Checks

This exporter supports grabbing key/value pairs from Consul's KV store and exposing them to Prometheus. This can be useful, for instance, if you use Consul KV to store your intended cluster size, and want to graph that value against the actual value found via monitoring.

  • kv.prefix: Prefix under which to look for KV pairs.
  • kv.filter: Only store keys that match this regex pattern.

A prefix must be supplied to activate this feature. Pass / if you want to search the entire keyspace.

Useful Queries

Are my services healthy?

min(consul_catalog_service_node_healthy) by (service)

Values of 1 mean that all nodes for the service are passing. Values of 0 mean at least one node for the service is not passing.

What service nodes are failing?

sum by (node, service)(consul_catalog_service_node_healthy == 0)

Using Docker

You can deploy this exporter using the prom/consul-exporter Docker image.

For example:

docker pull prom/consul-exporter

docker run -d -p 9107:9107 prom/consul-exporter -consul.server=172.17.0.1:8500

Keep in mind that your container needs to be able to communicate with the Consul server or agent. Use an IP accessible from the container or set the --dns and --dns-search options of the docker run command:

docker run -d -p 9107:9107 --dns=172.17.0.1 --dns-search=service.consul \
        prom/consul-exporter -consul.server=consul:8500

About

Exporter for Consul metrics

Resources

License

Stars

Watchers

Forks

Packages

No packages published

Languages

  • Go 83.7%
  • Makefile 16.3%