Archive workflow logs by kubectl command

archive-workflow-logs-by-kubectl.yaml

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: archive-log-test-
  namespace: default
spec:
  templates:
    - name: archive-log-test
      steps:
        - - name: list-default-running-pods
            template: kubectl
            arguments:
              parameters:
                - name: namespace
                  value: default
        - - name: list-kube-system-running-pods
            template: kubectl
            arguments:
              parameters:
                - name: namespace
                  value: kube-system

    - name: kubectl
      inputs:
        parameters:
          - name: namespace
      container:
        name: "kubectl"
        image: lachlanevenson/k8s-kubectl:v1.23.2
        command:
          - sh
          - -c
          - |
            kubectl get pods --field-selector=status.phase=Running -n {{inputs.parameters.namespace}}

    - name: exit-handler
      container:
        name: "kubectl"
        image: lachlanevenson/k8s-kubectl:v1.23.2
        command:
          - sh
          - -c
          - |
            kubectl get pods -l workflows.argoproj.io/workflow=${POD_NAME%-*} \
            --sort-by=".metadata.creationTimestamp" -o name | grep -v ${POD_NAME} \
            | xargs -I {} -t kubectl logs {} -c main >> ${LOG_PATH}/${POD_NAME%-*}.log
        env:
          - name: POD_NAME
            valueFrom:
              fieldRef:
                fieldPath: metadata.name
          - name: LOG_PATH
            value: /var/log/workflow
        resources: {}
        volumeMounts:
          - name: nfs-datastore
            mountPath: /var/log/workflow
      retryStrategy:
        limit: "5"
        retryPolicy: OnFailure
  entrypoint: archive-log-test
  serviceAccountName: default
  volumes:
    - name: nfs-datastore
      nfs:
        server: NFS_SERVER
        path: /data/workflow/log
  onExit: exit-handler