albertoeks

Debugging in Kubernetes

"How do you debug applications running in Kubernetes?"

The strategy to successfully debugging applications in kubernetes is to be consistent with your approach: application to public traffic or public traffic to application.

The question as it is it's very generic, however, let's see the different components we might have to check in our debugging journey:

• Container/Pod
• Service

albertoeks

//List pods in a node
kubectl get pods --all-namespaces --field-selector spec.nodeName=<NODE> -o wide

//Delete evicted pods
kubectl delete pods --all-namespaces --field-selector=status.phase=Failed

albertoeks

<configuration>
  <appender name="STDERR" class="ch.qos.logback.core.ConsoleAppender">
    <target>System.err</target>
    <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
      <level>WARN</level>
    </filter>
    <encoder>
        <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern>
    </encoder>
  </appender>

albertoeks

1. Fork the project

2. Clone the downstream repo locally (git clone https://github.com//some-awesome-project

3. Create a new branch (git checkout -b my_branch)

4. Create a new remote for the upstream repo (git remote add upstream https://github.com/original-repo/awesome-project)

5. Push your stuff to the upstream repo (git push -u origin my_branch)