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Updated output for examples/liveness

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Marcin Wielgus 2015-06-28 13:59:08 +02:00
parent 1c0b765df6
commit bad1d4426b
1 changed files with 17 additions and 26 deletions
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examples/liveness/README.md
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@ -43,37 +43,28 @@ To show the health check is actually working, first create the pods:
Check the status of the pods once they are created: Check the status of the pods once they are created:
``` ```
# kubectl get pods # kubectl get pods
POD IP CONTAINER(S) IMAGE(S) HOST LABELS STATUS CREATED MESSAGE NAME READY REASON RESTARTS AGE
liveness-exec 10.244.3.7 kubernetes-minion-f08h/130.211.122.180 test=liveness Running 3 seconds [...]
liveness gcr.io/google_containers/busybox Running 2 seconds liveness-exec 1/1 Running 0 13s
liveness-http 10.244.0.8 kubernetes-minion-0bks/104.197.10.10 test=liveness Running 3 seconds liveness-http 1/1 Running 0 13s
liveness gcr.io/google_containers/liveness Running 2 seconds
``` ```
Check the status half a minute later, you will see the container restart count being incremented:
Check the status half a minute later, you will see the termination messages:
``` ```
# kubectl get pods # kubectl get pods
POD IP CONTAINER(S) IMAGE(S) HOST LABELS STATUS CREATED MESSAGE mwielgus@mwielgusd:~/test/k2/kubernetes/examples/liveness$ kubectl get pods
liveness-exec 10.244.3.7 kubernetes-minion-f08h/130.211.122.180 test=liveness Running 34 seconds NAME READY REASON RESTARTS AGE
liveness gcr.io/google_containers/busybox Running 3 seconds last termination: exit code 137 [...]
liveness-http 10.244.0.8 kubernetes-minion-0bks/104.197.10.10 test=liveness Running 34 seconds liveness-exec 1/1 Running 1 36s
liveness gcr.io/google_containers/liveness Running 13 seconds last termination: exit code 2 liveness-http 1/1 Running 1 36s
``` ```
The termination messages indicate that the liveness probes have failed, and the containers have been killed and recreated. At the bottom of the *kubectl describe* output there are messages indicating that the liveness probes have failed, and the containers have been killed and recreated.
You can also see the container restart count being incremented by running `kubectl describe`.
``` ```
# kubectl describe pods liveness-exec | grep "Restart Count" # kubectl describe pods liveness-exec
Restart Count: 8 [...]
Sat, 27 Jun 2015 13:43:03 +0200 Sat, 27 Jun 2015 13:44:34 +0200 4 {kubelet kubernetes-minion-6fbi} spec.containers{liveness} unhealthy Liveness probe failed: cat: can't open '/tmp/health': No such file or directory
Sat, 27 Jun 2015 13:44:44 +0200 Sat, 27 Jun 2015 13:44:44 +0200 1 {kubelet kubernetes-minion-6fbi} spec.containers{liveness} killing Killing with docker id 65b52d62c635
Sat, 27 Jun 2015 13:44:44 +0200 Sat, 27 Jun 2015 13:44:44 +0200 1 {kubelet kubernetes-minion-6fbi} spec.containers{liveness} created Created with docker id ed6bb004ee10
Sat, 27 Jun 2015 13:44:44 +0200 Sat, 27 Jun 2015 13:44:44 +0200 1 {kubelet kubernetes-minion-6fbi} spec.containers{liveness} started Started with docker id ed6bb004ee10
``` ```
You would also see the killing and creating events at the bottom of the *kubectl describe* output:
```
Thu, 14 May 2015 15:23:25 -0700 Thu, 14 May 2015 15:23:25 -0700 1 {kubelet kubernetes-minion-0uzf} spec.containers{liveness} killing Killing 88c8b717d8b0940d52743c086b43c3fad0d725a36300b9b5f0ad3a1c8cef2d3e
Thu, 14 May 2015 15:23:25 -0700 Thu, 14 May 2015 15:23:25 -0700 1 {kubelet kubernetes-minion-0uzf} spec.containers{liveness} created Created with docker id b254a9810073f9ee9075bb38ac29a4b063647176ad9eabd9184078ca98a60062
Thu, 14 May 2015 15:23:25 -0700 Thu, 14 May 2015 15:23:25 -0700 1 {kubelet kubernetes-minion-0uzf} spec.containers{liveness} started Started with docker id b254a9810073f9ee9075bb38ac29a4b063647176ad9eabd9184078ca98a60062
...
```
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