OpenStack Magnum (Kubernetes)

This section contains a series of macros for projects that need to spin up kubernetes clusters using JJB.

Job Setup

The two macros lf-kubernetes-create & lf-kubernetes-delete are companion macros and used together when constructing a job template that needs a kubernetes cluster.

Example Usage:

- job-template:
    name: k8s-test

    #####################
    # Default variables #
    #####################

    base-image: Fedora Atomic 29 [2019-08-20]
    boot-volume-size: 10
    cluster-settle-time: 1m
    docker-volume-size: 10
    fixed-network: ecompci
    fixed-subnet: ecompci-subnet1
    keypair: jenkins
    kubernetes-version: v1.16.0
    master-count: 1
    master-flavor: v2-standard-1
    node-count: 2
    node-flavor: v2-highcpu-8
    openstack-cloud: vex

    #####################
    # Job configuration #
    #####################

    builders:
      - lf-infra-pre-build
      - lf-kubernetes-create:
          openstack-cloud: "{openstack-cloud}"
          base-image: "{base-image}"
          boot-volume-size: "{boot-volume-size}"
          cluster-settle-time: "{cluster-settle-time}"
          docker-volume-size: "{docker-volume-size}"
          fixed-network: "{fixed-network}"
          fixed-subnet: "{fixed-subnet}"
          keypair: "{keypair}"
          kubernetes-version: "{kubernetes-version}"
          master-count: "{master-count}"
          master-flavor: "{master-flavor}"
          node-count: "{node-count}"
          node-flavor: "{node-flavor}"
    publishers:
      - lf-kubernetes-delete

Macros

lf-kubernetes-create

Creates an OpenStack Kubernetes cluster as configured by the job. Name pattern of stack is $SILO-$JOB_NAME-$BUILD_NUMBER.

Requires lf-infra-pre-build macro to run first to install the openstack and lftools packages.

Requires a Config File Provider configuration for clouds.yaml named clouds-yaml.

Required Parameters:

openstack-cloud:

The OS_CLOUD variable to pass to OpenStack client. (Docs: https://docs.openstack.org/python-openstackclient)

base-image:

The base image to use for building the cluster. LF is using the Fedora Atomic images.

boot-volume-size:

The size of the operating system disk for each node.

cluster-settle-time:

A parameter that controls the buffer time after cluster creation before we start querying the API for status.

docker-volume-size:

The size of the Docker volume.

fixed-network:

The private network to build the cluster on.

fixed-subnet:

The subnet to use from the above private network

keypair:

The ssh keypair to inject into the nodes for access.

kubernetes-version:

The version of kubernetes to use for the cluster. Available versions are v1.14, v1.15, and v1.16

master-count:

The number of masters for the cluster (configuring more than one master automatically triggers the creation of a load-balancer).

master-flavor:

The flavor (size) of the master node.

node-count:

The number of kubernetes nodes for the cluster.

node-flavor:

The flavor (size) of the worker nodes.

lf-kubernetes-delete

Deletes the stack associated with this job. Name pattern of stack is $SILO-$JOB_NAME-$BUILD_NUMBER.

Requires lf-infra-pre-build macro to run first to install the openstack and lftools packages.

Requires a Config File Provider configuration for clouds.yaml named clouds-yaml.