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README.md

README.md 2.9 KB
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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.

  • 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_master_url: Internal URL for the master, for authentication retrieval.

  • openshift_metrics_hawkular_user_write_access: If user accounts should be able to write metrics. Defaults to 'false' so that only Heapster can write metrics and not individual users. It is recommended to disable user write access, if enabled any user will be able to write metrics to the system which can affect performance and use Cassandra disk usage to unpredictably increase.

  • openshift_metrics_hawkular_replicas: The number of replicas for Hawkular metrics.

  • openshift_metrics_cassandra_nodes: 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.

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 Martín (j.david.nieto@gmail.com)