MicroK8s : Fluentd を有効にする2020/08/17

Fluentd アドオンを有効にして、MicroK8s クラスターで Elasticsearch, Fluentd, Kibana (EFK Stack) を構成します。

[1]	プライマリーノードで、Fluentd アドオンを有効にします。

[root@dlp ~]#

microk8s enable fluentd dns

Enabling Fluentd-Elasticsearch
Labeling nodes
node/dlp.srv.world labeled
Enabling DNS
Applying manifest
serviceaccount/coredns created
configmap/coredns created
deployment.apps/coredns created
service/kube-dns created
clusterrole.rbac.authorization.k8s.io/coredns created
clusterrolebinding.rbac.authorization.k8s.io/coredns created
Restarting kubelet
DNS is enabled
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-v0.1.5 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-v2.2.0 created
deployment.apps/kibana-logging created
service/kibana-logging created
Fluentd-Elasticsearch is enabled
Addon dns is already enabled.

[root@dlp ~]#

microk8s kubectl get services -n kube-system

NAME                    TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)                  AGE
elasticsearch-logging   ClusterIP   10.152.183.119   <none>        9200/TCP                 54s
kibana-logging          ClusterIP   10.152.183.237   <none>        5601/TCP                 54s
kube-dns                ClusterIP   10.152.183.10    <none>        53/UDP,53/TCP,9153/TCP   70s

[root@dlp ~]#

microk8s kubectl get pods -A

NAMESPACE     NAME                              READY   STATUS    RESTARTS   AGE
kube-system   coredns-588fd544bf-jfwv2          1/1     Running   0          97s
kube-system   elasticsearch-logging-0           1/1     Running   0          81s
kube-system   fluentd-es-v2.2.0-gvf69           1/1     Running   0          81s
kube-system   kibana-logging-84f486f46b-v5ts4   1/1     Running   0          81s

[root@dlp ~]#

microk8s kubectl cluster-info

Kubernetes master is running at https://127.0.0.1:16443
Elasticsearch is running at https://127.0.0.1:16443/api/v1/namespaces/kube-system/services/elasticsearch-logging/proxy
Kibana is running at https://127.0.0.1:16443/api/v1/namespaces/kube-system/services/kibana-logging/proxy
CoreDNS is running at https://127.0.0.1:16443/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy
Metrics-server is running at https://127.0.0.1:16443/api/v1/namespaces/kube-system/services/https:metrics-server:/proxy

# kube proxy を起動

# 必要に応じてアクセス許可範囲は変更

[root@dlp ~]#

microk8s kubectl proxy --address=0.0.0.0 --accept-hosts=.*

Starting to serve on [::]:8001

# Firewalld 稼働中の場合はポート許可

[root@dlp ~]#

firewall-cmd --add-port=8001/tcp --permanent

[root@dlp ~]#

firewall-cmd --reload

[2]	ローカルネットワーク内の任意のクライアントコンピューターで Web ブラウザーを起動し、 [http://(MicroK8s プライマリーノードのホスト名または IP アドレス):8001/api/v1/namespaces/kube-system/services/kibana-logging/proxy] にアクセスして、Kibana のダッシュボードが表示されれば OK です。