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Added Cluster Loader content to 4.0
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‎_topic_map.yml

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@@ -52,33 +52,33 @@ Dir: authentication
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Distros: openshift-*
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Topics:
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- Name: Understanding authentication
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File: understanding-authentication
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File: understanding-authentication
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- Name: Configuring the internal OAuth server
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File: configuring-internal-oauth
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File: configuring-internal-oauth
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- Name: Using RBAC to define and apply permissions
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File: using-rbac
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- Name: Configuring LDAP failover
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File: using-rbac
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- Name: Configuring LDAP failover
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File: configuring-ldap-failover
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- Name: Configuring the user agent
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File: configuring-user-agent
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- Name: Understanding and creating service accounts
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File: understanding-and-creating-service-accounts
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- Name: Using service accounts in applications
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File: using-service-accounts-in-applications
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File: using-service-accounts-in-applications
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- Name: Using a service account as an OAuth client
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File: using-service-accounts-as-oauth-client
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File: using-service-accounts-as-oauth-client
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---
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Name: Users and roles
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Dir: users_and_roles
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Distros: openshift-*
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Topics:
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- Name: Impersonating the system:admin user
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File: impersonating-system-admin
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Distros: openshift-enterprise,openshift-origin
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Distros: openshift-enterprise,openshift-origin
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- Name: Creating a project as another user
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File: creating-project-other-user
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Distros: openshift-enterprise,openshift-origin
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---
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Distros: openshift-enterprise,openshift-origin
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---
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Name: Installing clusters
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Dir: installation
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Distros: openshift-origin, openshift-enterprise
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File: installing-customizations-cloud
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- Name: Installing a cluster on existing hosts
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File: installing-existing-hosts
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- Name: Uninstalling a cluster from existing hosts
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- Name: Uninstalling a cluster from existing hosts
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File: uninstalling-existing-hosts
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---
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Name: Networking
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Topics:
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- Name: Using the node tuning Operator
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File: using-node-tuning-operator
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- Name: Using Cluster Loader
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File: using-cluster-loader
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- Name: Scaling the cluster monitoring Operator
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File: scaling-cluster-monitoring-operator
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- Name: Planning your environment according to object limits

‎modules/configuring-cluster-loader.adoc

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// Module included in the following assemblies:
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//
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// scalability_and_performance/using-cluster-loader.adoc
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[id='configuring_cluster_loader_{context}']
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= Configuring Cluster Loader
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The tool creates multiple namespaces (projects), which contain multiple templates or pods.
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Locate the configuration files for Cluster Loader in the `config/` subdirectory.
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The pod files and template files referenced in these configuration examples are
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found in the `content/` subdirectory.
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== Example Cluster Loader configuration file
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Cluster Loader’s configuration file is a basic YAML file:
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----
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provider: local <1>
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ClusterLoader:
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cleanup: true
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projects:
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- num: 1
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basename: clusterloader-cakephp-mysql
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tuning: default
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ifexists: reuse
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templates:
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- num: 1
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file: ./examples/quickstarts/cakephp-mysql.json
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- num: 1
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basename: clusterloader-dancer-mysql
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tuning: default
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ifexists: reuse
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templates:
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- num: 1
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file: ./examples/quickstarts/dancer-mysql.json
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- num: 1
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basename: clusterloader-django-postgresql
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tuning: default
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ifexists: reuse
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templates:
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- num: 1
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file: ./examples/quickstarts/django-postgresql.json
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- num: 1
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basename: clusterloader-nodejs-mongodb
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tuning: default
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ifexists: reuse
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templates:
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- num: 1
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file: ./examples/quickstarts/nodejs-mongodb.json
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- num: 1
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basename: clusterloader-rails-postgresql
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tuning: default
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templates:
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- num: 1
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file: ./examples/quickstarts/rails-postgresql.json
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tuningset: <2>
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- name: default
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pods:
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stepping: <3>
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stepsize: 5
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pause: 0 s
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rate_limit: <4>
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delay: 0 ms
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----
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<1> Optional setting for end-to-end tests. Set to `local` to avoid extra log messages.
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<2> The tuning sets allow rate limiting and stepping, the ability to create several
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batches of pods while pausing in between sets. Cluster Loader monitors
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completion of the previous step before continuing.
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<3> Stepping will pause for `M` seconds after each `N` objects are created.
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<4> Rate limiting will wait `M` milliseconds between the creation of objects.
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== Configuration fields
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.Top-level Cluster Loader Fields
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|===
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|Field |Description
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|`cleanup`
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|Set to `true` or `false`. One definition per configuration. If set to `true`,
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`cleanup` deletes all namespaces (projects) created by Cluster Loader at the
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end of the test.
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|`projects`
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|A sub-object with one or many definition(s). Under `projects`, each
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namespace to create is defined and `projects` has several mandatory subheadings.
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|`tuningset`
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|A sub-object with one definition per configuration. `tuningset` allows the user
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to define a tuning set to add configurable timing to project or object creation
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(pods, templates, and so on).
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|`sync`
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|An optional sub-object with one definition per configuration. Adds synchronization
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possibilities during object creation.
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|===
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.Fields under `projects`
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|===
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|Field |Description
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|`num`
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|An integer. One definition of the count of how many projects to create.
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|`basename`
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|A string. One definition of the base name for the project. The count of
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identical namespaces will be appended to `Basename` to prevent collisions.
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|`tuning`
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|A string. One definition of what tuning set you want to apply to the objects,
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which you deploy inside this namespace.
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|`ifexists`
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|A string containing either `reuse` or `delete`. Defines what the tool does if
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it finds a project or namespace that has the same name of the project or
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namespace it creates during execution.
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|`configmaps`
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|A list of key-value pairs. The key is the ConfigMap name and the value is a
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path to a file from which you create the ConfigMap.
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|`secrets`
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|A list of key-value pairs. The key is the secret name and the value is a path to
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a file from which you create the secret.
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|`pods`
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|A sub-object with one or many definition(s) of pods to deploy.
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|`templates`
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|A sub-object with one or many definition(s) of templates to deploy.
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|===
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.Fields under `pods` and `templates`
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|===
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|Field |Description
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|`num`
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|An integer. The number of pods or templates to deploy.
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|`image`
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|A string. The docker image URL to a repository where it can be pulled.
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|`basename`
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| A string. One definition of the base name for the template (or pod) that you want to create.
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|`file`
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|A string. The path to a local file, which is either a PodSpec or template to be created.
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|`parameters`
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|Key-value pairs. Under `parameters`, you can specify a list of values to
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override in the pod or template.
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|===
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.Fields under `tuningset`
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|===
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|Field |Description
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|`name`
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|A string. The name of the tuning set which will match the name specified when
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defining a tuning in a project.
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|`pods`
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|A sub-object identifying the `tuningset` that will apply to pods.
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|`templates`
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|A sub-object identifying the `tuningset` that will apply to templates.
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|===
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.Fields under `tuningset` `pods` or `tuningset` `templates`
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|===
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|Field |Description
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|`stepping`
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|A sub-object. A stepping configuration used if you want to create an object in a
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step creation pattern.
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|`rate_limit`
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|A sub-object. A rate-limiting tuning set configuration to limit the object
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creation rate.
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|===
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.Fields under `tuningset` `pods` or `tuningset` `templates`, `stepping`
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|===
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|Field |Description
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|`stepsize`
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|An integer. How many objects to create before pausing object creation.
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|`pause`
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|An integer. How many seconds to pause after creating the number of objects
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defined in `stepsize`.
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|`timeout`
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|An integer. How many seconds to wait before failure if the object creation is
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not successful.
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|`delay`
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|An integer. How many milliseconds (ms) to wait between creation requests.
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|===
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.Fields under `sync`
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|===
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|Field |Description
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|`server`
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|A sub-object with `enabled` and `port` fields. The boolean `enabled` defines
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whether to start a HTTP server for pod synchronization. The integer `port`
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defines the HTTP server port to listen on (`9090` by default).
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|`running`
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|A boolean. Wait for pods with labels matching `selectors` to go into `Running`
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state.
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|`succeeded`
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|A boolean. Wait for pods with labels matching `selectors` to go into `Completed`
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state.
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|`selectors`
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|A list of selectors to match pods in `Running` or `Completed` states.
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|`timeout`
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|A string. The synchronization timeout period to wait for pods in `Running` or
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`Completed` states. For values that are not `0`, use units:
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[ns\|us\|ms\|s\|m\|h].
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|===

‎modules/installing-cluster-loader.adoc

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// Module included in the following assemblies:
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//
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// scalability_and_performance/using-cluster-loader.adoc
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[id='installing_cluster_loader_{context}']
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= Installing Cluster Loader
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Cluster Loader is included in the `atomic-openshift-tests` package.
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.Procedure
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. Edit the `/etc/yum.conf` file, removing `atomic-openshift-tests` from the
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`exclude=` line.
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. Install the package:
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----
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$ yum install atomic-openshift-tests
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----
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After installation, the test executable `extended.test` is located in
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`/usr/libexec/atomic-openshift/extended.test`.

‎modules/running-cluster-loader.adoc

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// Module included in the following assemblies:
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//
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// scalability_and_performance/using-cluster-loader.adoc
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[id='running_cluster_loader_{context}']
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= Running Cluster Loader
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.Procedure
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. Set the `KUBECONFIG` variable to the location of the administrator `kubeconfig`:
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----
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$ export KUBECONFIG=${KUBECONFIG-$HOME/.kube/config}
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----
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. Execute Cluster Loader using the built-in test configuration, which deploys five
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template builds and waits for them to complete:
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----
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$ cd /usr/libexec/atomic-openshift/
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$ ./extended.test --ginkgo.focus="Load cluster"
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----
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Alternatively, execute Cluster Loader with a user-defined configuration by
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adding the flag for `--viper-config`:
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----
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$ ./extended.test --ginkgo.focus="Load cluster" --viper-config=config/test <1>
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----
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<1> In this example, there is a subdirectory called *_config/_* with a configuration
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file called *_test.yml_*. In the command line, exclude the extension of the
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configuration file, as the tool will automatically determine the file type and
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extension.

‎scalability_and_performance/using-cluster-loader.adoc

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[id='using_cluster_loader{context}']
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= Using cluster loader
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include::modules/common-attributes.adoc[]
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:context:
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toc::[]
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Cluster Loader is a tool that deploys large numbers of various objects to a
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cluster, which creates user-defined cluster objects. Build, configure, and run
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Cluster Loader to measure performance metrics of your {product-title} deployment
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at various cluster states.
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include::modules/installing-cluster-loader.adoc[leveloffset=+1]
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include::modules/running-cluster-loader.adoc[leveloffset=+1]
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include::modules/configuring-cluster-loader.adoc[leveloffset=+1]
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== Known issues
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If the `IDENTIFIER` parameter is not defined in user templates, template
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creation fails with `error: unknown parameter name "IDENTIFIER"`. If you deploy
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templates, add this parameter to your template to avoid this error:
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----
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{
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"name": "IDENTIFIER",
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"description": "Number to append to the name of resources",
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"value": "1"
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}
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----
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If you deploy pods, adding the parameter is unnecessary.

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