148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

Chapter 14 ■ Configuring Logging
Starting Fluentd to Collect Logs
Having started the data source (the Kuebrnetes cluster application) and the backend database
(Elasticsearch), next we shall start the unifying layer between the two, Fluentd. Create a pod definition
file fluentd-es.yaml for Fluentd and copy the following listing to the definition file. The Docker image
fabric8/fluentd-kubernetes:v1.9 is used in the pod’s container. The Elasticsearch endpoint URL and
port to interface with are also specified. The pod mounts the system log directory /var/log and the Docker
containers directory /var/lib/docker/containers from the host path. Volumes of type hostPath are used.
A different log directory could also be mounted.
---
apiVersion: v1
kind: Pod
metadata:
name: fluentd-elasticsearch
spec:
containers:
-
env:
-
name: ELASTICSEARCH_HOST
value: "10.2.15.2"
-
name: ELASTICSEARCH_PORT
value: "9200"
image: "fabric8/fluentd-kubernetes:v1.9"
name: fluentd-elasticsearch
resources:
limits:
cpu: "0.1"
securityContext:
privileged: true
volumeMounts:
-
mountPath: /var/log
name: varlog
-
mountPath: /var/lib/docker/containers
name: varlibdockercontainers
readOnly: true
volumes:
-
hostPath:
path: /var/log
name: varlog
-
hostPath:
path: /var/lib/docker/containers
name: varlibdockercontainers
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