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Add services per ns cluster limits workload
This commit will enable us to test the number of services possible per namespace. The test also supports pushing it by creating max pssible services per namespace across multiple namespaces.
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‎docs/README.md‎

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| [PVCscale](pvscale.md) | PVCScale test | Working storageclass |
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| [Conformance](conformance.md) | OCP/Kubernetes e2e tests | None |
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| [Namespaces per cluster](namespaces-per-cluster.md) | Maximum Namespaces | None |
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| [Services per namespace](services-per-namespace.md) | Maximum services per namespace | None |
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* Baseline job without a tooled cluster just idles a cluster. The goal is to capture resource consumption over a period of time to characterize resource requirements thus tooling is required. (For now)
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| [PVCscale](pvscale.md) | No |
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| [Conformance](conformance.md) | No |
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| [Namespaces per cluster](namespaces-per-cluster.md) | Yes: Exit code, Test Duration |
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| [Services per namespace](services-per-namespace.md) | Yes: Exit code, Test Duration |

‎docs/services-per-namespace.md‎

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# Services per namespace Workload
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The services per namespace workload playbook is `workloads/cluster-limits-services-per-namespace.yml` and will run the services per namespace workload on your cluster.
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Services per namespace is a cluster limits focused test which creates maximum possible services per each namespace.
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Running from CLI:
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```sh
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$ cp workloads/inventory.example inventory
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$ # Add orchestration host to inventory
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$ # Edit vars in workloads/vars/services-per-namespace.yml or define Environment vars (See below)
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$ time ansible-playbook -vv -i inventory workloads/cluster-limits-services-per-namespace.yml
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```
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## Environment variables
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### PUBLIC_KEY
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Default: `~/.ssh/id_rsa.pub`
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Public ssh key file for Ansible.
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### PRIVATE_KEY
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Default: `~/.ssh/id_rsa`
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Private ssh key file for Ansible.
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### ORCHESTRATION_USER
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Default: `root`
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User for Ansible to log in as. Must authenticate with PUBLIC_KEY/PRIVATE_KEY.
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### WORKLOAD_IMAGE
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Default: `quay.io/openshift-scale/scale-ci-workload`
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Container image that runs the workload script.
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### WORKLOAD_JOB_NODE_SELECTOR
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Default: `false`
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Enables/disables the node selector that places the workload job on the `workload` node.
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### WORKLOAD_JOB_TAINT
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Default: `false`
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Enables/disables the toleration on the workload job to permit the `workload` taint.
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### WORKLOAD_JOB_PRIVILEGED
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Default: `false`
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Enables/disables running the workload pod as privileged.
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### KUBECONFIG_FILE
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Default: `~/.kube/config`
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Location of kubeconfig on orchestration host.
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### PBENCH_INSTRUMENTATION
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Default: `false`
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Enables/disables running the workload wrapped by pbench-user-benchmark. When enabled, pbench agents can then be enabled (`ENABLE_PBENCH_AGENTS`) for further instrumentation data and pbench-copy-results can be enabled (`ENABLE_PBENCH_COPY`) to export captured data for further analysis.
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### ENABLE_PBENCH_AGENTS
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Default: `false`
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Enables/disables the collection of pbench data on the pbench agent Pods. These Pods are deployed by the tooling playbook.
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### ENABLE_PBENCH_COPY
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Default: `false`
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Enables/disables the copying of pbench data to a remote results server for further analysis.
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### PBENCH_SSH_PRIVATE_KEY_FILE
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Default: `~/.ssh/id_rsa`
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Location of ssh private key to authenticate to the pbench results server.
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### PBENCH_SSH_PUBLIC_KEY_FILE
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Default: `~/.ssh/id_rsa.pub`
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Location of the ssh public key to authenticate to the pbench results server.
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### PBENCH_SERVER
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Default: There is no public default.
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DNS address of the pbench results server.
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### SCALE_CI_RESULTS_TOKEN
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Default: There is no public default.
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Future use for pbench and prometheus scraper to place results into git repo that holds results data.
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### JOB_COMPLETION_POLL_ATTEMPTS
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Default: `360`
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Number of retries for Ansible to poll if the workload job has completed. Poll attempts delay 10s between polls with some additional time taken for each polling action depending on the orchestration host setup.
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### SERVICES_PER_NAMESPACE_TEST_PREFIX
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Default: `services_per_namespace`
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Test to prefix the pbench results.
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### SERVICES_PER_NAMESPACE_CLEANUP
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Default: `true`
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Enables/disables cluster loader cleanup of this workload on completion.
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### SERVICES_PER_NAMESPACE_BASENAME
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Default: `services-per-namespace`
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Basename used by cluster loader for the project(s) it creates.
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### SERVICES_PER_NAMESPACE_PROJECTS
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Default: `2`
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Maximum number of projects that will be created by the services per namespace workload. Typically much higher values are used than the default for large scale tests.
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### SERVICES_PER_NAMESPACE_COUNT
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Default: `5000`
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Maximum number of services per namespace that will be created by the services per namespace workload.
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### EXPECTED_SERVICES_PER_NAMESPACE_DURATION
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Default: `600`
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Pass/fail criteria. Value to determine if Namespaces per cluster workload executed in duration expected.
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## Smoke test variables
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```
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SERVICES_PER_NAMESPACE_TEST_PREFIX=services_per_namespace_smoke
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SERVICES_PER_NAMESPACE_CLEANUP=true
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SERVICES_PER_NAMESPACE_BASENAME=services-per-namespace
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SERVICES_PER_NAMESPACE_PROJECTS=2
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SERVICES_PER_NAMESPACE_COUNT=100
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```

‎workloads/cluster-limits-services-per-ns.yml‎

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---
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#
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# Runs services per namespace limits test on an existing OCP cluster
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#
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- name: Runs services per namespace on a RHCOS cluster
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hosts: orchestration
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gather_facts: true
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remote_user: "{{orchestration_user}}"
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vars_files:
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- vars/services-per-namespace.yml
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vars:
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workload_job: "services-per-namespace"
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tasks:
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- name: Create scale-ci-tooling directory
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file:
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path: "{{ansible_user_dir}}/scale-ci-tooling"
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state: directory
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- name: Copy workload files
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copy:
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src: "{{item.src}}"
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dest: "{{item.dest}}"
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with_items:
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- src: scale-ci-tooling-ns.yml
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dest: "{{ansible_user_dir}}/scale-ci-tooling/scale-ci-tooling-ns.yml"
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- src: workload-services-per-namespace-script-cm.yml
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dest: "{{ansible_user_dir}}/scale-ci-tooling/workload-services-per-namespace-script-cm.yml"
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- name: Slurp kubeconfig file
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slurp:
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src: "{{kubeconfig_file}}"
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register: kubeconfig_file_slurp
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- name: Slurp ssh private key file
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slurp:
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src: "{{pbench_ssh_private_key_file}}"
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register: pbench_ssh_private_key_file_slurp
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- name: Slurp ssh public key file
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slurp:
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src: "{{pbench_ssh_public_key_file}}"
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register: pbench_ssh_public_key_file_slurp
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- name: Template workload templates
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template:
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src: "{{item.src}}"
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dest: "{{item.dest}}"
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with_items:
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- src: pbench-cm.yml.j2
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dest: "{{ansible_user_dir}}/scale-ci-tooling/pbench-cm.yml"
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- src: pbench-ssh-secret.yml.j2
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dest: "{{ansible_user_dir}}/scale-ci-tooling/pbench-ssh-secret.yml"
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- src: kubeconfig-secret.yml.j2
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dest: "{{ansible_user_dir}}/scale-ci-tooling/kubeconfig-secret.yml"
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- src: workload-job.yml.j2
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dest: "{{ansible_user_dir}}/scale-ci-tooling/workload-job.yml"
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- src: workload-env.yml.j2
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dest: "{{ansible_user_dir}}/scale-ci-tooling/workload-services-per-namespace-env.yml"
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- name: Check if scale-ci-tooling namespace exists
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shell: |
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oc get project scale-ci-tooling
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ignore_errors: true
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changed_when: false
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register: scale_ci_tooling_ns_exists
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- name: Ensure any stale scale-ci-services-per-namespace job is deleted
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shell: |
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oc delete job scale-ci-services-per-namespace -n scale-ci-tooling
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register: scale_ci_tooling_project
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failed_when: scale_ci_tooling_project.rc == 0
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until: scale_ci_tooling_project.rc == 1
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retries: 60
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delay: 1
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when: scale_ci_tooling_ns_exists.rc == 0
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- name: Block for non-existing tooling namespace
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block:
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- name: Create tooling namespace
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shell: |
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oc create -f {{ansible_user_dir}}/scale-ci-tooling/scale-ci-tooling-ns.yml
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- name: Create tooling service account
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shell: |
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oc create serviceaccount useroot -n scale-ci-tooling
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oc adm policy add-scc-to-user privileged -z useroot -n scale-ci-tooling
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when: enable_pbench_agents|bool
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when: scale_ci_tooling_ns_exists.rc != 0
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- name: Create/replace kubeconfig secret
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shell: |
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oc replace --force -n scale-ci-tooling -f "{{ansible_user_dir}}/scale-ci-tooling/kubeconfig-secret.yml"
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- name: Create/replace the pbench configmap
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shell: |
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oc replace --force -n scale-ci-tooling -f "{{ansible_user_dir}}/scale-ci-tooling/pbench-cm.yml"
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- name: Create/replace pbench ssh secret
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shell: |
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oc replace --force -n scale-ci-tooling -f "{{ansible_user_dir}}/scale-ci-tooling/pbench-ssh-secret.yml"
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- name: Create/replace workload script configmap
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shell: |
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oc replace --force -n scale-ci-tooling -f "{{ansible_user_dir}}/scale-ci-tooling/workload-services-per-namespace-script-cm.yml"
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- name: Create/replace workload script environment configmap
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shell: |
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oc replace --force -n scale-ci-tooling -f "{{ansible_user_dir}}/scale-ci-tooling/workload-services-per-namespace-env.yml"
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- name: Create/replace workload job to that runs workload script
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shell: |
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oc replace --force -n scale-ci-tooling -f "{{ansible_user_dir}}/scale-ci-tooling/workload-job.yml"
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- name: Poll until job pod is running
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shell: |
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oc get pods --selector=job-name=scale-ci-services-per-namespace -n scale-ci-tooling -o json
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register: pod_json
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retries: 60
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delay: 2
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until: pod_json.stdout | from_json | json_query('items[0].status.phase==`Running`')
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- name: Poll until job is complete
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shell: |
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oc get job scale-ci-services-per-namespace -n scale-ci-tooling -o json
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register: job_json
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retries: "{{job_completion_poll_attempts}}"
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delay: 10
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until: job_json.stdout | from_json | json_query('status.succeeded==`1` || status.failed==`1`')
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failed_when: job_json.stdout | from_json | json_query('status.succeeded==`1`') == false
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when: job_completion_poll_attempts|int > 0

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