Getting Started
If you would like to give mast a fast try, here is how to install it and run a famous "Hello World".
To do this, you need to Kubernetes cluster and kubectl CLI, in order to set up and access the cluster.
Install Mast server
Head over to the releases page and install server and cli. The latest release labeled Stable is recommended.
The command to install server looks something like that; just remember to replace version with your desired version number
kubectl apply -f https://gitlab.com/api/v4/projects/21527026/packages/generic/mast/<VERSION>/mast-installer.yaml
output
namespace/mast created
customresourcedefinition.apiextensions.k8s.io/clusterworkflowtemplates.argoproj.io created
customresourcedefinition.apiextensions.k8s.io/cronworkflows.argoproj.io created
customresourcedefinition.apiextensions.k8s.io/mastjobs.mast.ansi.services created
customresourcedefinition.apiextensions.k8s.io/mastoperators.mast.ansi.services created
customresourcedefinition.apiextensions.k8s.io/mastruns.mast.ansi.services created
customresourcedefinition.apiextensions.k8s.io/workfloweventbindings.argoproj.io created
customresourcedefinition.apiextensions.k8s.io/workflows.argoproj.io created
customresourcedefinition.apiextensions.k8s.io/workflowtasksets.argoproj.io created
customresourcedefinition.apiextensions.k8s.io/workflowtemplates.argoproj.io created
serviceaccount/argo created
serviceaccount/argo-server created
serviceaccount/mast created
role.rbac.authorization.k8s.io/argo-role created
clusterrole.rbac.authorization.k8s.io/argo-aggregate-to-admin created
clusterrole.rbac.authorization.k8s.io/argo-aggregate-to-edit created
clusterrole.rbac.authorization.k8s.io/argo-aggregate-to-view created
clusterrole.rbac.authorization.k8s.io/argo-cluster-role created
clusterrole.rbac.authorization.k8s.io/argo-server-cluster-role created
clusterrole.rbac.authorization.k8s.io/mast-server-cr created
rolebinding.rbac.authorization.k8s.io/argo-binding created
clusterrolebinding.rbac.authorization.k8s.io/argo-binding created
clusterrolebinding.rbac.authorization.k8s.io/argo-server-binding created
clusterrolebinding.rbac.authorization.k8s.io/mast-server-rolebinding-cluster created
configmap/workflow-controller-configmap created service/argo-server created
service/workflow-controller-metrics created
deployment.apps/argo-server created deployment.apps/mast-server created
deployment.apps/workflow-controller created
Wait until all pods are up and running.
Install CLI
Cli for diferent OS types and architectures can be find on releases page, provided with instalation instructions as well.
Add your firsr MastJob and run it
To submit your firts MastJob you first need to add playbook so mast would know what to do. For this example we will use a simple playbook that will print "Hello World" to the console.
Simply add it by:
kubectl apply -f https://gitlab.com/ansi-services/mast/-/raw/master/examples/hello-world/hello-world-playbook.yaml
Now you can create MastJob object that will use this playbook. Create it with mast CLI:
mast job create https://gitlab.com/ansi-services/mast/-/raw/master/examples/hello-world/hello-world-mastjob.yaml
You can do it also with standard kubectl apply -f command.
MastJob is just a definition of action or set of actions to do, to start MastJob you need a MastRun object.MastRun acts as a trigger. It can be created as a code, defined in .yaml file or dynamicly with Mast CLI.
For now use CLI:
This will generate MastRun and add it to the cluster.
You can list all MastRuns with:
You can see that MastRun name is hello-world- ad a 5 random characters. This is done to diferenciate Mastruns who run the same Mastjob for few times.
Finally to see that promissed "hello world" run:
output
PLAY [localhost] ***************************************************************
TASK [Gathering Facts] *********************************************************
ok: [localhost]
TASK [Hello from ansible inside your cluster] **********************************
ok: [localhost] => {
"msg": "Hello there"
}
PLAY RECAP *********************************************************************
localhost : ok=2 changed=0 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
Just add right MastJob name at the end of command.