Lab 7.2. Service Mesh and Ingress Controller - missing step

rusakl

hi All,

Installation steps in point 1 seems to miss one command.

• When I follow the instruction precheck works fine:

Linkerd core checks

kubernetes-api
√ can initialize the client
√ can query the Kubernetes API

kubernetes-version
√ is running the minimum Kubernetes API version
√ is running the minimum kubectl version

pre-kubernetes-setup
√ control plane namespace does not already exist
√ can create non-namespaced resources
√ can create ServiceAccounts
√ can create Services
√ can create Deployments
√ can create CronJobs
√ can create ConfigMaps
√ can create Secrets
√ can read Secrets
√ can read extension-apiserver-authentication configmap
√ no clock skew detected

linkerd-version
√ can determine the latest version
√ cli is up-to-date

Status check results are √

• However then
  $ linkerd install | kubectl apply -f -

Linkerd CRDs must be installed first. Run linkerd install with the --crds flag.
error: no objects passed to apply

• It seems like one step in instruction is missing:

$ linkerd install --crds | kubectl apply -f -

Rendering Linkerd CRDs...
Next, run linkerd install | kubectl apply -f - to install the control plane.
customresourcedefinition.apiextensions.k8s.io/authorizationpolicies.policy.linkerd.io created
customresourcedefinition.apiextensions.k8s.io/httproutes.policy.linkerd.io created
customresourcedefinition.apiextensions.k8s.io/meshtlsauthentications.policy.linkerd.io created
customresourcedefinition.apiextensions.k8s.io/networkauthentications.policy.linkerd.io created
customresourcedefinition.apiextensions.k8s.io/serverauthorizations.policy.linkerd.io created
customresourcedefinition.apiextensions.k8s.io/servers.policy.linkerd.io created
customresourcedefinition.apiextensions.k8s.io/serviceprofiles.linkerd.io created

• Then "linkerd install | kubectl apply -f -" works fine.

Thanks!

chrispokorni

Hi @rusakl,

What version of Linkerd is installed on your cluster?

Regards,
-Chris

mretfaster

Hello!
I had the same error.
I'm using the latest stable release of linked

$ linkerd version
Client version: stable-2.12.2
Server version: unavailable

THIS did work for me!

linkerd install --crds | kubectl apply -f -
# ... a bit of output...
linkerd install | kubectl apply -f -

chrispokorni

Hi @mretfaster,

The crds installation step is not needed for the earlier stable releases of Linkerd, such as 2.11.4, recommended by the lab guide.

Regards,
-Chris