Why control plane namespace does not already exist when I am installing linkerd?

Hi guys,
My linkerd had a 500 error server; then, I decided to install it again. So now it is not passing linkerd check --pre.
Best Answers
-
Hi @maybel,
Have you tried uninstalling linkerd, then going through a fresh install?
Regards,
-Chris0 -
Hi @maybel,
As requested, for readability, please
... paste in here, as
Code
...PLAIN TEXT:
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
config.linkerd.io/proxy-await: enabled
deployment.kubernetes.io/revision: "1"CODE block:
apiVersion: apps/v1 kind: Deployment metadata: annotations: config.linkerd.io/proxy-await: enabled deployment.kubernetes.io/revision: "1"
See the difference?
Regards,
-Chris0
Answers
-
Hi @chrispokorni, that is what I did, using this command:
linkerd viz uninstall | kubectl delete -f -
and then, when I was doing the new and fresh install, that was my result.0 -
I guess uninstalling linkerd is not that simple. I deleted the namespace linkerd and solved the cp namespace does not exist. But all the rest problems are still there.
0 -
@chrispokorni We have in Spanish one collocation that said: slowly but confident, I did it! I deleted all the redundant resources manually.
0 -
Hi @chrispokorni, happiness last too short when it's about Kubernetes. I have a problem!
When I try to access linkerd, I get this answer:
I guess the reason is here:
Additionally, seeing the yaml code in magenta, like the picture below, suggests something is wrong with that code.
I tried "-enforced-host=^dashboard.example.com$", but it didn't work.0 -
Hi @maybel,
Step 2 of the linkerd service mesh installation is suggesting an edit to the
--enforced-host
argument line. Have you tried that? What was your result?Regards,
-Chris0 -
Hi @chrispokorni,
I removed everything after the equal sign, as the practice says. And this is what I got.It appears that you are trying to reach this service with a host of '34.79.114.217:31500'.
This does not match /^(localhost|127.0.0.1|web.linkerd-viz.svc.cluster.local|web.linkerd-viz.svc|[::1])(:\d+)?$/ and has been denied for security reasons.0 -
@chrispokorni, I did it again, and this is what I got:
student@cp:~$ kubectl -n linkerd-viz edit deploy web
A copy of your changes has been stored to "/tmp/kubectl-edit-4123935361.yaml"
error: map: map[args:[-linkerd-metrics-api-addr=metrics-api.linkerd-viz.svc.cluster.local:8085 -cluster-domain=cluster.local -controller-namespace=linkerd -log-level=info -log-format=plain -enforced-host=]] does not contain declared merge key: name0 -
Hi @maybel,
It seems you attempted several edits on the web deployment, neither recommended in the lab guide. The magenta text is just the annotation storing the most recent change in the resource's state.
What browser are you using to access the linkerd dashboard?
Can you paste in here, as
Code
the output of the following command?kubectl -n linkerd-viz edit deploy web
Regards,
-Chris0 -
Hi, @chrispokorni; here it is:
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
config.linkerd.io/proxy-await: enabled
deployment.kubernetes.io/revision: "1"
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{"config.linkerd.io/proxy-await":"enabled","linkerd.io/created-by":"linkerd/helm stable-2.13.2","linkerd.io/inject":"enabled"},"labels":{"app.kubernetes.io/name":"web","app.kubernetes.io/part-of":"Linkerd","app.kubernetes.io/version":"stable-2.13.2","component":"web","linkerd.io/extension":"viz","namespace":"linkerd-viz"},"name":"web","namespace":"linkerd-viz"},"spec":{"replicas":1,"selector":{"matchLabels":{"component":"web","linkerd.io/extension":"viz","namespace":"linkerd-viz"}},"template":{"metadata":{"annotations":{"cluster-autoscaler.kubernetes.io/safe-to-evict":"true","config.alpha.linkerd.io/proxy-wait-before-exit-seconds":"0","linkerd.io/created-by":"linkerd/helm stable-2.13.2","linkerd.io/inject":"enabled"},"labels":{"component":"web","linkerd.io/extension":"viz","namespace":"linkerd-viz"}},"spec":{"containers":[{"args":["-linkerd-metrics-api-addr=metrics-api.linkerd-viz.svc.cluster.local:8085","-cluster-domain=cluster.local","-controller-namespace=linkerd","-log-level=info","-log-format=plain","-enforced-host=^(localhost|127\.0\.0\.1|web\.linkerd-viz\.svc\.cluster\.local|web\.linkerd-viz\.svc|\[::1\])(:\d+)?$","-enable-pprof=false"],"image":"cr.l5d.io/linkerd/web:stable-2.13.2","imagePullPolicy":"IfNotPresent","livenessProbe":{"httpGet":{"path":"/ping","port":9994},"initialDelaySeconds":10},"name":"web","ports":[{"containerPort":8084,"name":"http"},{"containerPort":9994,"name":"admin-http"}],"readinessProbe":{"failureThreshold":7,"httpGet":{"path":"/ready","port":9994}},"resources":null,"securityContext":{"allowPrivilegeEscalation":false,"capabilities":{"drop":["ALL"]},"readOnlyRootFilesystem":true,"runAsNonRoot":true,"runAsUser":2103,"seccompProfile":{"type":"Runt
Default"}},"serviceAccountName":"web"}}}}
linkerd.io/created-by: linkerd/helm stable-2.13.2
linkerd.io/inject: enabled
creationTimestamp: "2023-04-27T13:24:28Z"
generation: 1
labels:
app.kubernetes.io/name: web
app.kubernetes.io/part-of: Linkerd
app.kubernetes.io/version: stable-2.13.2
component: web
linkerd.io/extension: viz
namespace: linkerd-viz
name: web
namespace: linkerd-viz
resourceVersion: "445889"
uid: d88f4688-2d9d-43ff-a7ea-1d4a3065b44b
spec:
progressDeadlineSeconds: 600
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
component: web
linkerd.io/extension: viz
namespace: linkerd-viz
strategy:
rollingUpdate:
maxSurge: 25%
maxUnavailable: 25%
type: RollingUpdate
template:
metadata:
annotations:
cluster-autoscaler.kubernetes.io/safe-to-evict: "true"
config.alpha.linkerd.io/proxy-wait-before-exit-seconds: "0"
linkerd.io/created-by: linkerd/helm stable-2.13.2
linkerd.io/inject: enabled
creationTimestamp: null
labels:
component: web
linkerd.io/extension: viz
namespace: linkerd-viz
spec:
containers:
- args:
- -linkerd-metrics-api-addr=metrics-api.linkerd-viz.svc.cluster.local:8085
- -cluster-domain=cluster.local
- -controller-namespace=linkerd
- -log-level=info
- -log-format=plain
- -enforced-host=^(localhost|127.0.0.1|web.linkerd-viz.svc.cluster.local|web.linkerd-viz.svc|[::1])(:\d+)?$
- -enable-pprof=false
image: cr.l5d.io/linkerd/web:stable-2.13.2
imagePullPolicy: IfNotPresent
livenessProbe:
failureThreshold: 3
httpGet:
path: /ping
port: 9994
scheme: HTTP
initialDelaySeconds: 10
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
name: web
ports:
- containerPort: 8084
name: http
protocol: TCP
- containerPort: 9994
name: admin-http
protocol: TCP
readinessProbe:
failureThreshold: 7
httpGet:
path: /ready
port: 9994
scheme: HTTP
periodSeconds: 10
successThreshold: 1
timeoutSeconds: 1
resources: {}
securityContext:
allowPrivilegeEscalation: false
capabilities:
drop:
- ALL
readOnlyRootFilesystem: true
runAsNonRoot: true
runAsUser: 2103
seccompProfile:
type: RuntimeDefault
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: ClusterFirst
nodeSelector:
kubernetes.io/os: linux
restartPolicy: Always
schedulerName: default-scheduler
securityContext:
seccompProfile:
type: RuntimeDefault
serviceAccount: web
serviceAccountName: web
terminationGracePeriodSeconds: 30
status:
availableReplicas: 1
conditions:
- lastTransitionTime: "2023-04-27T13:24:28Z"
lastUpdateTime: "2023-04-27T13:24:49Z"
message: ReplicaSet "web-864897b5c5" has successfully progressed.
reason: NewReplicaSetAvailable
status: "True"
type: Progressing
- lastTransitionTime: "2023-05-04T08:54:29Z"
lastUpdateTime: "2023-05-04T08:54:29Z"
message: Deployment has minimum availability.
reason: MinimumReplicasAvailable
status: "True"
type: Available
observedGeneration: 1
readyReplicas: 1
replicas: 1
updatedReplicas: 10 -
apiVersion: apps/v1 kind: Deployment metadata: annotations: config.linkerd.io/proxy-await: enabled deployment.kubernetes.io/revision: "1" kubectl.kubernetes.io/last-applied-configuration: | {"apiVersion":"apps/v1","kind":"Deployment", "metadata":{"annotations":{"config.linkerd.io/ proxy-await":"enabled","linkerd.io/created-by": "linkerd/helm stable-2.13.2","linkerd.io/inject": "enabled"},"labels":{"app.kubernetes.io/name": "web","app.kubernetes.io/part-of":"Linkerd", "app.kubernetes.io/version":"stable-2.13.2", "component":"web","linkerd.io/extension":"viz", "namespace":"linkerd-viz"},"name":"web","namespace": "linkerd-viz"},"spec":{"replicas":1,"selector" :{"matchLabels":{"component":"web", "linkerd.io/extension":"viz","namespace": "linkerd-viz"}},"template":{"metadata":{"annotations": {"cluster-autoscaler.kubernetes.io/safe-to-evict": "true","config.alpha.linkerd.io/ proxy-wait-before-exit-seconds":"0","linkerd.io /created-by":"linkerd/helm stable-2.13.2", "linkerd.io/inject":"enabled"},"labels": {"component":"web","linkerd.io/extension": "viz","namespace":"linkerd-viz"}},"spec": {"containers":[{"args":["-linkerd-metrics-api-addr= metrics-api.linkerd-viz.svc.cluster.local:8085", "-cluster-domain=cluster.local"," -controller-namespace=linkerd","-log-level=info", "-log-format=plain","-enforced-host= ^(localhost|127\\.0\\.0\\.1|web\\.linkerd-viz\\.svc\\. cluster\\.local|web\\.linkerd-viz\\.svc|\\[::1\\]) (:\\d+)?$","-enable-pprof=false"],"image": "cr.l5d.io/linkerd/web:stable-2.13.2", "imagePullPolicy":"IfNotPresent","livenessProbe" :{"httpGet":{"path":"/ping","port":9994}, "initialDelaySeconds":10},"name":"web", "ports":[{"containerPort":8084,"name":"http"}, {"containerPort":9994,"name":"admin-http"}], "readinessProbe":{"failureThreshold":7,"httpGet" :{"path":"/ready","port":9994}},"resources":null, "securityContext":{"allowPrivilegeEscalation": false,"capabilities":{"drop":["ALL"]}, "readOnlyRootFilesystem":true,"runAsNonRoot":true, "runAsUser":2103,"seccompProfile":{"type": "RuntimeDefault"}}}],"nodeSelector":{ "kubernetes.io/os":"linux"},"securityContext":{ "seccompProfile":{"type":"RuntimeDefault"}}, "serviceAccountName":"web"}}}} linkerd.io/created-by: linkerd/helm stable-2.13.2 linkerd.io/inject: enabled creationTimestamp: "2023-04-27T13:24:28Z" generation: 1 labels: app.kubernetes.io/name: web app.kubernetes.io/part-of: Linkerd app.kubernetes.io/version: stable-2.13.2 component: web linkerd.io/extension: viz namespace: linkerd-viz name: web namespace: linkerd-viz resourceVersion: "474056" uid: d88f4688-2d9d-43ff-a7ea-1d4a3065b44b spec: progressDeadlineSeconds: 600 replicas: 1 revisionHistoryLimit: 10 selector: matchLabels: component: web linkerd.io/extension: viz namespace: linkerd-viz strategy: rollingUpdate: maxSurge: 25% maxUnavailable: 25% type: RollingUpdate template: metadata: annotations: cluster-autoscaler.kubernetes.io/safe-to-evict: "true" config.alpha.linkerd.io/proxy-wait-before-exit-seconds: "0" linkerd.io/created-by: linkerd/helm stable-2.13.2 linkerd.io/inject: enabled creationTimestamp: null labels: component: web linkerd.io/extension: viz namespace: linkerd-viz spec: containers: - args: - -linkerd-metrics-api-addr=metrics-api.linkerd-viz.svc.cluster.local:8085 - -cluster-domain=cluster.local - -controller-namespace=linkerd - -log-level=info - -log-format=plain - -enforced-host=^(localhost|127\.0\.0\.1|web\.linkerd-viz\.svc\.cluster\.local|web\.linkerd-viz\.svc|\[::1\])(:\d+)?$ - -enable-pprof=false image: cr.l5d.io/linkerd/web:stable-2.13.2 imagePullPolicy: IfNotPresent livenessProbe: failureThreshold: 3 httpGet: path: /ping port: 9994 scheme: HTTP initialDelaySeconds: 10 periodSeconds: 10 successThreshold: 1 timeoutSeconds: 1 name: web ports: - containerPort: 8084 name: http protocol: TCP - containerPort: 9994 name: admin-http protocol: TCP readinessProbe: failureThreshold: 7 httpGet: path: /ready port: 9994 scheme: HTTP periodSeconds: 10 successThreshold: 1 timeoutSeconds: 1 resources: {} securityContext: allowPrivilegeEscalation: false capabilities: drop: - ALL readOnlyRootFilesystem: true runAsNonRoot: true runAsUser: 2103 seccompProfile: type: RuntimeDefault terminationMessagePath: /dev/termination-log terminationMessagePolicy: File dnsPolicy: ClusterFirst nodeSelector: kubernetes.io/os: linux restartPolicy: Always schedulerName: default-scheduler securityContext: seccompProfile: type: RuntimeDefault serviceAccount: web serviceAccountName: web terminationGracePeriodSeconds: 30 status: availableReplicas: 1 conditions: - lastTransitionTime: "2023-04-27T13:24:28Z" lastUpdateTime: "2023-04-27T13:24:49Z" message: ReplicaSet "web-864897b5c5" has successfully progressed. reason: NewReplicaSetAvailable status: "True" type: Progressing - lastTransitionTime: "2023-05-04T22:25:49Z" lastUpdateTime: "2023-05-04T22:25:49Z" message: Deployment has minimum availability. reason: MinimumReplicasAvailable status: "True" type: Available observedGeneration: 1 readyReplicas: 1 replicas: 1 updatedReplicas: 1
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@chrispokorni is done.
0 -
@chrispokorni, I found my mistake!!
I was taken away more than the practice says, but talking to you is helpful. I mean, visualising the code correctly changes many things. Thank you!!
0
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