DEPRECATED

This project is obsolete and no longer maintained. Refer to https://kubernetes.io/docs/home/ for kubernetes logging configuration.

Kubernetes Fluentd (Elasticsearch)

Alternative fluentd docker image designed as a drop-in replacement for the fluentd-es-image in the fluentd-elasticsearch cluster-level logging addon. This image provides support for shipping journald logs for docker and kubelet since these services are often managed by systemd.

Components

Component	Version
fluentd	1.2.4

Configuration

Uses ReDACT for fluentd configuration.

Environment Variable	Description
fluentd_es_host	The elasticsearch host to connect to (Default: elasticsearch-logging)
fluentd_es_port	The elasticsearch API port (Default: 9200)
fluentd_use_journald	Use journald for retrieving top level service logs like docker and kubelet (Default: empty)

Example DaemonSet

apiVersion: extensions/v1beta1
kind: DaemonSet
metadata:
  name: fluentd-es
  namespace: kube-system
  labels:
    k8s-app: fluentd-es
spec:
  template:
    metadata:
      labels:
        k8s-app: fluentd-es
        kubernetes.io/cluster-service: "true"
        addonmanager.kubernetes.io/mode: Reconcile
      annotations:
        scheduler.alpha.kubernetes.io/critical-pod: ''
    spec:
      tolerations:
      - key: "node-role.kubernetes.io/master"
        operator: "Exists"
        effect: "NoSchedule"
      - key: "CriticalAddonsOnly"
        operator: "Exists"
      terminationGracePeriodSeconds: 30
      containers:
      - name: fluentd-es
        image: emacski/k8s-fluentd:latest
        env:
        - name: fluentd_has_systemd
          value: "yes"
        resources:
          limits:
            memory: 200Mi
          requests:
            cpu: 100m
            memory: 200Mi
        volumeMounts:
        - name: logs
          mountPath: /var/log
        - name: containers
          mountPath: /var/lib/docker/containers
          readOnly: true
      volumes:
      - name: logs
        hostPath:
          path: /var/log
      - name: containers
        hostPath:
          path: /var/lib/docker/containers