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Add liveness probe error case #194

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Add liveness probe error case #194

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ac766a8
Add liveness probe error case
vCillusion May 11, 2021
bb39778
Add reference to grep -w
vCillusion May 14, 2021
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17 changes: 13 additions & 4 deletions e.observability.md
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Original file line number Diff line number Diff line change
Expand Up @@ -144,15 +144,24 @@ A typical liveness probe failure event
LAST SEEN TYPE REASON OBJECT MESSAGE
22m Warning Unhealthy pod/liveness-exec Liveness probe failed: cat: can't open '/tmp/healthy': No such file or directory
```
or

```
LAST SEEN TYPE REASON OBJECT MESSAGE
10m Warning Unhealthy pod/nginx Liveness probe errored: rpc error: code = Unknown desc = container not running (ea07b5238cb370018a911d82551c02f07df9bc435696855ffca62a143938b56a)
```

collect failed pods namespace by namespace

```sh
# Using grep for exact matches '-w' or '—word-regexp' $ grep -w 'one\|two\|three'
# reference https://www.linuxscrew.com/grep-multiple-words-strings-patterns

kubectl get ns # check namespaces
kubectl -n qa get events | grep -i "Liveness probe failed"
kubectl -n alan get events | grep -i "Liveness probe failed"
kubectl -n test get events | grep -i "Liveness probe failed"
kubectl -n production get events | grep -i "Liveness probe failed"
kubectl -n qa get events | grep -i -w "Liveness probe failed\|errored"
kubectl -n alan get events | grep -i -w "Liveness probe failed\|errored"
kubectl -n test get events | grep -i -w "Liveness probe failed\|errored"
kubectl -n production get events | grep -i -w "Liveness probe failed\|errored"
```

</p>
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