This plugin is primarily aimed to create/destroy Kubernetes resources on a Kubernetes host. To use the plugin we need to add it to the plugins directory of xl-release.
Once this plugin is added to xl-release, types such as Kubernetes host and tasks specific to create/remove Kubernetes resources are available.
We need to define a Unix host as the first thing under configurations.
A Unix host running kubernetes requires following fields to be specified
*address - Ip Address/Hostname of the remote machine running the Kubernetes cluster
*port - the SSH port of the remote machine
*username - ssh username
*password - ssh password
*sudoUsername - Sudo username on the remote machine(e.g root)
Once this host is created, we now need to create a release with tasks for creating/removing Kubernetes resources.
In the newly created release add a task of type Kubernetes Create resource. This task requires the user to specify input configuration for Kubernetes in Json format.
There are two ways to specify the Json input , user can simply add the json as plain text in field spec or it can be specified as a URL. If URL is secured, user needs to provide a valid username and password as well.
Once the configuration is done , the user can additionally add another step to wait for the created resource to be in running state. This can be achieved by specifying following command in a text field labelled command
kubectl describe pods/<name_of_the_pod>
Command field in wait task can take any command the user wants to execute to wait on the resource. Additionally the user can specify a regex that should match the output of command executed in field labelled pattern. Once the regex specified the output wait step is considered successful and the release moves to the next task/phase to execute.
Similarly for removing the Kubernetes resource, user needs to create a task of type Kubernetes remove resource and provide same Json input as specified in the create task.
