Kubernetes Host Tailer

kubectl apply -f - <<EOF
apiVersion: logging-extensions.banzaicloud.io/v1alpha1
kind: HostTailer
metadata:
  name: systemd-hosttailer-sample
spec:
  systemdTailers:
    - name: my-systemd-tailer
      disabled: false
      maxEntries: 100
      systemdFilter: kubelet.service
EOF

kubectl apply -f - <<EOF
apiVersion: logging-extensions.banzaicloud.io/v1alpha1
kind: HostTailer
metadata:
  name: file-hosttailer-sample
spec:
  fileTailers:
    - name: nginx-access
      path: /var/log/nginx/access.log
      disabled: false
EOF

kubectl apply -f - <<EOF
apiVersion: logging.banzaicloud.io/v1beta1
kind: Flow
metadata:
  name: hosttailer-flow
  namespace: default
spec:
  filters:
  - tag_normaliser: {}
  # keeps data matching to label, the rest of the data will be discarded by this flow implicitly
  match:
  - select:
      labels: 
        app.kubernetes.io/name: file-hosttailer-sample
      # there might be a need to match on container name too (in case of multiple containers)
      container_names:
        - nginx-access
  outputRefs:
    - sample-output
EOF

kubectl apply -f - <<EOF
apiVersion: logging-extensions.banzaicloud.io/v1alpha1
kind: HostTailer
metadata:
  name: multi-sample
spec:
  # list of File tailers
  fileTailers:
    - name: nginx-access
      path: /var/log/nginx/access.log
    - name: nginx-error
      path: /var/log/nginx/error.log
  # list of Systemd tailers
  systemdTailers:
    - name: my-systemd-tailer
      maxEntries: 100
      systemdFilter: kubelet.service
EOF

kubectl apply -f - <<EOF
apiVersion: scheduling.k8s.io/v1
kind: PriorityClass
metadata:
  name: hosttailer-priority
value: 1000000
globalDefault: false
description: "This priority class should be used for hosttailer pods only."
EOF

kubectl apply -f -<<EOF
apiVersion: logging-extensions.banzaicloud.io/v1alpha1
kind: HostTailer
metadata:
  name: priority-sample
spec:
  controlNamespace: default
  # Override podSpecBase variables here
  workloadOverrides:
    priorityClassName: hosttailer-priority
  fileTailers:
    - name: nginx-access
      path: /var/log/nginx/access.log
    - name: nginx-error
      path: /var/log/nginx/error.log
EOF