kubernetes（k8s）中部署 efk

Kubernetes 开发了一个 Elasticsearch 附加组件来实现集群的日志管理。这是一个 Elasticsearch、Fluentd 和 Kibana 的组合。

Elasticsearch 是一个搜索引擎，负责存储日志并提供查询接口；

Fluentd 负责从 Kubernetes 搜集日志，每个node节点上面的fluentd监控并收集该节点上面的系统日志，并将处理过后的日志信息发送给Elasticsearch；

Kibana 提供了一个 Web GUI，用户可以浏览和搜索存储在 Elasticsearch 中的日志。

从官方github仓库下载yaml文件

[root@hello ~/efk]# git clone https://github.com/kubernetes/kubernetes.git
[root@hello ~/efk]# kubectl create namespace logging
[root@hello ~/efk]#

执行所有yaml文件

[root@hello ~/efk]# cd kubernetes/cluster/addons/fluentd-elasticsearch/
[root@hello ~/efk/kubernetes/cluster/addons/fluentd-elasticsearch]# kubectl apply -f ./
namespace/logging created
service/elasticsearch-logging created
serviceaccount/elasticsearch-logging created
clusterrole.rbac.authorization.k8s.io/elasticsearch-logging created
clusterrolebinding.rbac.authorization.k8s.io/elasticsearch-logging created
statefulset.apps/elasticsearch-logging created
configmap/fluentd-es-config-v0.2.1 created
serviceaccount/fluentd-es created
clusterrole.rbac.authorization.k8s.io/fluentd-es created
clusterrolebinding.rbac.authorization.k8s.io/fluentd-es created
daemonset.apps/fluentd-es-v3.1.1 created
deployment.apps/kibana-logging created
service/kibana-logging created

查看pod状态：

[root@hello ~]# kubectl  get pod -n logging
NAME                              READY   STATUS    RESTARTS       AGE
elasticsearch-logging-0           1/1     Running   0              2m17s
elasticsearch-logging-1           1/1     Running   0              96s
fluentd-es-v3.1.1-qw9dj           1/1     Running   1 (97s ago)    2m16s
kibana-logging-75bd6cccf5-pskrr   1/1     Running   1 (106s ago)   2m16s
[root@hello ~]#


[root@hello ~]# kubectl  get service -n logging
NAME                    TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
elasticsearch-logging   ClusterIP   None                    9200/TCP,9300/TCP   2m41s
kibana-logging          ClusterIP   10.68.145.186           5601/TCP            2m40s
[root@hello ~]#

访问 kibana

[root@hello ~]# kubectl proxy --address='192.168.1.11' --port=8086 --accept-hosts='^*$'
#访问
http://192.168.1.11:8086//api/v1/namespaces/logging/services/kibana-logging/proxy/

创建一个index-pattern索引