Inputs

Name	Description	Type	Default	Required
selenium_chart_version	Selenium chart version. More info: https://github.com/helm/charts/tree/master/stable/selenium	string	3.141.59	no
chrome_replicas	Number of selenium chrome replica	string	1	no
firefox_replicas	Number of selenium firefox replica	string	1	no
chrome_tag	Version of Chrome on the selenium replicas	string	latest	no
firefox_tag	Version of Firefox on the selenium replicas	string	latest	no
ui_service_type	The kubernetes service type for the UI	string	NodePort	no

Probable error you may face

1. Default user forbidden to perform tasks in kubernetes cluster.

   Error:

   I received below error when performing "terraform apply". Error: rpc error: code = Unknown desc = configmaps is forbidden: User "system:serviceaccount:kube-system:default" cannot list resource "configmaps" in API group "" in the namespace "kube-system"

   Reason:

   Default user in kube-system namespace does not have required permissions.

   Resolution:

   To make it simple, I added cluster-admin role to default id using yaml below.

    apiVersion: rbac.authorization.k8s.io/v1
    kind: ClusterRoleBinding
    metadata:
    name: default
    roleRef:
    apiGroup: rbac.authorization.k8s.io
    kind: ClusterRole
    name: cluster-admin
    subjects:
    - kind: ServiceAccount
    name: default
    namespace: kube-system

2. Deploy does not finish.

   Error:

   Terraform apply shows "..still creating.." till timeout. Although the release is created and working as expected.

   Reason:

   Helm 2 to Helm 3 migration. Terraform was creating helm 2 release. Kubernetes cluster was trying to find helm 3 release and not getting it. As a result, terraform was thinking release is not yet created and never finishing.

   Resolution:

   Follow instructions mentioned in below pages. Converting releases and cleaning up configuration willbe required. https://github.com/helm/helm-2to3 https://helm.sh/blog/migrate-from-helm-v2-to-helm-v3/

3. Helm list does not show release.

   Error:

   helm list does not show release althogh release is deployed and pods are working.

   Reason:

   Same as point 2.

   Resolution:

   Same as point 2.

4. Cluster out of resource.

   Error:

   Terraform is trying to created pods, but pods are throwing below error. 2 Insufficient cpu, 2 Insufficient memory.

   Reason:

   Cluster has limited memory and cpu. By default, chart tries to craete with .5 cpu and 500 MiB memory. Multiple of these may exhaust cluster.

   Resolution:

   Add resource limit.