Welcome to the Linux Foundation Forum!

Lab 7.2. Service Mesh and Ingress Controller - missing step

rusakl Posts: 2
edited August 2022 in LFD259 Class Forum

hi All,

Installation steps in point 1 seems to miss one command.

  • When I follow the instruction precheck works fine:

Linkerd core checks

√ can initialize the client
√ can query the Kubernetes API

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

√ 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

√ 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.



  • chrispokorni
    chrispokorni Posts: 2,014

    Hi @rusakl,

    What version of Linkerd is installed on your cluster?


  • 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
    chrispokorni Posts: 2,014

    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.



Upcoming Training