Viewing and saving log files

Logs track pod events. You can gather a log for a specific pod and container within a pod or for all pods.

About this task

Each Kubernetes pod and container performs a specific task, narrowing down which pod to gather a log allows you to focus on the problem being debugged. Review the Pods in Sametime topic to understand what each pod does.

Some pods have multiple containers and you can specify gathering the log for the specific container. For pods that only have one container, you do not need to specify the container name.

Procedure

Run the kubectl get pods command to obtain the name of the pod. The command output includes all current pod names.

Note: Pod name have hashes in it that change each time a pod is started.

The following example shows the output from a kubectl get pods command.


NAME			        READY    STATUS    RESTARTS        AGE
activity-5b75df6f6b-z98xs	 1/1     Running    0              25d
app-registry-7766fddd94-qbvsk    1/1     Running    0              25d
auth-c6d8457cb-9j9z7             1/1     Running    0              24d
backgrounds-cb8966646-wtvqs      1/1     Running    0              25d
catalog-ff66944d5-vvfkx          1/1     Running    0              10d
click2call-86f8f4cbbb-wptch      1/1     Running    0              25d
community-775fc897c9-mmb84       2/2     Running    0              25d
files-5b5865f8fc-h8hl5           2/2     Running    2 (9d ago)     25d
jibri-web-65b6849f67-9xxq9       1/1     Running    0              25d
jitsi-6c4754ffcf-n6t72           3/3     Running    0              25d
lobby-b569fcdd5-5fkmf            1/1     Running    0              25d
location-5894bcb6f7-kbkrb        1/1     Running    0              25d
mux-f68c5868d-8vl6j              1/1     Running    0              25d
outlook-7d7f54ff65-7cmzx         1/1     Running    2 (25d ago)    25d
proxy-6d669b9b94-xmhvt           1/1     Running    0              25d
recorder-7c9dcfc646-2g66f        2/2     Running    9 (22m ago)    32h
recordings-7cdd5c8cf4-lg2hn      1/1     Running    0              25d
video-7c477fbd86-2jn62           2/2     Running    0              25d
web-6d785f6479-tfmkb             1/1     Running    5 (14d ago)    25d
webhook-7cb587cd74-5t96w         1/1     Running    0              10d

To view the log for a specific pod, run the kubectl logs command specifying the name of the pod to gather log information. If there is a specific container to gather the log, include both the pod name and container name on the command.
```
kubectl logs pod_name container_name 
```
For example, if you want to view the jvb logs from the video pod based on the output in the previous step enter the command:
```
 kubectl logs video-7c477fbd86-2jn62 jvb 
```
You can also use the --all-containers argument to see logs from all the containers on the pod.
```
kubectl logs video-58f8589f99-f4tcd --all-containers 
```
To redirect the output to a file, add the greater than character ( >) as an argument on the command and specifying a location that you have access to put the file. For example:
```
kubectl logs video-7c477fbd86-2jn62 --all-containers > /tmp/video.txt 
```