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diff --git a/roles/openshift_metrics/README.md b/roles/openshift_metrics/README.md new file mode 100644 index 000000000..f4c47c7bb --- /dev/null +++ b/roles/openshift_metrics/README.md @@ -0,0 +1,102 @@ +OpenShift Metrics with Hawkular +==================== + +OpenShift Metrics Installation + +Requirements +------------ + +The following variables need to be set and will be validated: + +- `openshift_metrics_hostname`: hostname used on the hawkular metrics route. + +- `openshift_metrics_project`: project (i.e. namespace) where the components will be + deployed. + + +Role Variables +-------------- + +For default values, see [`defaults/main.yaml`](defaults/main.yaml). + +- `openshift_metrics_image_prefix`: Specify prefix for metrics components; e.g for + "openshift/origin-metrics-deployer:v1.1", set prefix "openshift/origin-". + +- `openshift_metrics_image_version`: Specify version for metrics components; e.g. for + "openshift/origin-metrics-deployer:v1.1", set version "v1.1". + +- `openshift_metrics_hawkular_cert:` The certificate used for re-encrypting the route + to Hawkular metrics. The certificate must contain the hostname used by the route. + The default router certificate will be used if unspecified + +- `openshift_metrics_hawkular_key:` The key used with the Hawkular certificate + +- `openshift_metrics_hawkular_ca:` An optional certificate used to sign the Hawkular certificate. + +- `openshift_metrics_hawkular_replicas:` The number of replicas for Hawkular metrics. + +- `openshift_metrics_cassandra_replicas`: The number of Cassandra nodes to deploy for the + initial cluster. + +- `openshift_metrics_cassandra_storage_type`: Use `emptydir` for ephemeral storage (for + testing), `pv` to use persistent volumes (which need to be created before the + installation) or `dynamic` for dynamic persistent volumes. + +- `openshift_metrics_cassandra_pv_prefix`: The name of persistent volume claims created + for cassandra will be this with a serial number appended to the end, starting + from 1. + +- `openshift_metrics_cassandra_pv_size`: The persistent volume size for each of the + Cassandra nodes. + +- `openshift_metrics_heapster_standalone`: Deploy only heapster, without the Hawkular Metrics and + Cassandra components. + +- `openshift_metrics_heapster_allowed_users`: A comma-separated list of CN to accept. By + default, this is set to allow the OpenShift service proxy to connect. If you + override this, make sure to add `system:master-proxy` to the list in order to + allow horizontal pod autoscaling to function properly. + +- `openshift_metrics_startup_timeout`: How long in seconds we should wait until + Hawkular Metrics and Heapster starts up before attempting a restart. + +- `openshift_metrics_duration`: How many days metrics should be stored for. + +- `openshift_metrics_resolution`: How often metrics should be gathered. + +## Additional variables to control resource limits +Each metrics component (hawkular, cassandra, heapster) can specify a cpu and memory limits and requests by setting +the corresponding role variable: +``` +openshift_metrics_<COMPONENT>_(limits|requests)_(memory|cpu): <VALUE> +``` +e.g +``` +openshift_metrics_cassandra_limits_memory: 1G +openshift_metrics_hawkular_requests_cpu: 100 +``` + +Dependencies +------------ +openshift_facts + + +Example Playbook +---------------- + +``` +- name: Configure openshift-metrics + hosts: oo_first_master + roles: + - role: openshift_metrics +``` + +License +------- + +Apache License, Version 2.0 + +Author Information +------------------ + +Jose David MartÃn (j.david.nieto@gmail.com) |