编写补救指南以帮助用户排除问题

When a Kubernetes container has errors, it can enter into a state called CrashLoopBackOff, where Kubernetes attempts to restart the container to resolve the issue. The container will continue to restart until the problem is resolved.Take the following steps to diagnose the problem:

### Pod Events

Check the pod events to identify any explicit errors or warnings.
1. Go to the "Events" section in the middle of the [Pod highlight page](/#/components/\{{ componentUrnForUrl \}})
2. Check if there is are events like "BackOff", "FailedScheduling", "FailedAttachVolume" or "OOMKilled" in the Alert Category by clicking on 'Alerts'.
3. You can see the details of the event (click on the event) to give more information about the issue.
4. If the 'Show related event' option is enabled all events of resources related to this resource like a deployment will also show up and can give you a clue if any change on them is causing this issue. You can see this by checking if there is a correlation between the time of a deployment and a change of behaviour seen by the metrics and events of this pod.
For easy correlation you can use 'shift'-'click' to add markers to the different graph, log and event widgets.

### Container Logs
Check the container logs for any explicit errors or warnings
Inspect the [Logs](/#/components/\{{ componentUrnForUrl \}}#logs) of all the containers in this pod.
Search for hints in the logs by:
1.  Looking for changes in logging pattern, by looking at the number of logs per time unit (The histogram bars).
    In many cases the change in pattern will indicate what is going on.
    You can click-drag on the histogram bars to narrow the logs displayed to that time-frame.
2.  Searching for "Error" or "Fatal" in the search bar.
3.  Looking at the logs around the time that the monitor triggered

### Recent Changes
Look at the pod age in the "About" section on the [Pod highlight page](/#/components/\{{ componentUrnForUrl \}}) to identify any recent deployments that might have caused the issue
1. The "Age" is shown in the "About" section on the left side of the screen
2. If the "Age" and the time that the monitor was triggered are in close proximity then take a look at the most recent deployment by clicking on [Show last change](/#/components/\{{ componentUrnForUrl \}}#lastChange).