Kuberentes 1.20.5搭建eck

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对你无可奈何

修改于 2021-03-28 10:51:30

1.1K0

修改于 2021-03-28 10:51:30

文章被收录于专栏：运维专栏运维专栏

前言：

CVM

CDN

/act?from=10680

/act/season?from=14065

/?from=10680

(照旧加几个腾讯云连接)

TKE

CBS

kubernetes1.16版本的时候安装了elastic on kubernetes（ECK）1.0版本。存储用了local disk文档跑了一年多了。elasticsearch对应版本是7.6.2。现在已完成了kubernetes 1.20.5 containerd cilium hubble 环境的搭建（https://blog.csdn.net/saynaihe/article/details/115187298）并且集成了cbs腾讯云块存储（https://blog.csdn.net/saynaihe/article/details/115212770）。eck也更新到了1.5版本(我能说我前天安装的时候还是1.4.0吗.....还好我只是简单应用没有太复杂的变化无非版本变了....那就再来一遍吧)

最早部署的kubernetes1.16版本的eck安装方式https://duiniwukenaihe.github.io/2019/10/21/k8s-efk/多年前搭建的eck1.0版本。

关于eck

elastic cloud on kubernetes是一种operator的安装方式，很大程度上简化了应用的部署。同样的还有promtheus-operator。

可参照https://www.elastic.co/guide/en/cloud-on-k8s/current/k8s-deploy-eck.html官方文档的部署方式。

1. 在kubernete集群中部署ECK

1. 安装自定义资源定义和操作员及其RBAC规则：

kubectl apply -f https://download.elastic.co/downloads/eck/1.5.0/all-in-one.yaml

2. 监视操作日志：

kubectl -n elastic-system logs -f statefulset.apps/elastic-operator

-----------------------分隔符-----------------

我是直接把yaml下载到本地了。

###至于all-in-one.yaml.1后面的1可以忽略了哈哈，第二次加载文件加后缀了。
kubectl apply -f all-in-one.yaml
kubectl -n elastic-system logs -f statefulset.apps/elastic-operator

2. 部署elasticsearch集群

1. 定制化elasticsearch 镜像

增加s3插件，修改时区东八区，并添加腾讯云cos的秘钥，并重新打包elasticsearch镜像.

1. DockerFile如下

FROM docker.elastic.co/elasticsearch/elasticsearch:7.12.0
ARG ACCESS_KEY=XXXXXXXXX
ARG SECRET_KEY=XXXXXXX
ARG ENDPOINT=cos.ap-shanghai.myqcloud.com
ARG ES_VERSION=7.12.0

ARG PACKAGES="net-tools lsof"
ENV allow_insecure_settings 'true'
RUN rm -rf /etc/localtime && cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

RUN echo 'Asia/Shanghai' > /etc/timezone
RUN  if [ -n "${PACKAGES}" ]; then  yum install -y $PACKAGES && yum clean all && rm -rf /var/cache/yum; fi
RUN \
     /usr/share/elasticsearch/bin/elasticsearch-plugin install --batch repository-s3 && \
    /usr/share/elasticsearch/bin/elasticsearch-keystore create && \
	echo "XXXXXX"  | /usr/share/elasticsearch/bin/elasticsearch-keystore add --stdin s3.client.default.access_key  && \
	echo "XXXXXX"  | /usr/share/elasticsearch/bin/elasticsearch-keystore add --stdin s3.client.default.secret_key

2. 打包镜像并上传到腾讯云镜像仓库，也可以是其他私有仓库

 docker build -t ccr.ccs.tencentyun.com/xxxx/elasticsearch:7.12.0 .
 docker push  ccr.ccs.tencentyun.com/xxxx/elasticsearch:7.12.0

2. 创建elasticsearch部署yaml文件，部署elasticsearch集群

修改了自己打包 image tag ，使用了腾讯云cbs csi块存储。并定义了部署的namespace，创建了namespace logging.

1. 创建部署elasticsearch应用的命名空间

kubectl create ns logging

cat <<EOF > elastic.yaml
apiVersion: elasticsearch.k8s.elastic.co/v1
kind: Elasticsearch
metadata:
  name: elastic
  namespace: logging
spec:
  version: 7.12.0
  image: ccr.ccs.tencentyun.com/XXXX/elasticsearch:7.12.0
  http:
    tls:
      selfSignedCertificate:
        disabled: true
  nodeSets:
  - name: laya
    count: 3
    podTemplate:
      spec:
        containers:
        - name: elasticsearch
          env:
          - name: ES_JAVA_OPTS
            value: -Xms2g -Xmx2g
          resources:
            requests:
              memory: 4Gi
              cpu: 0.5
            limits:
              memory: 4Gi
              cpu: 2
    config:
      node.master: true
      node.data: true
      node.ingest: true
      node.store.allow_mmap: false
    volumeClaimTemplates:
    - metadata:
        name: elasticsearch-data
      spec:
        accessModes:
        - ReadWriteOnce
        storageClassName: cbs-csi 
        resources:
          requests:
            storage: 200Gi
EOF

2. 部署yaml文件并查看应用部署状态

kubectl apply -f elastic.yaml
kubectl get elasticsearch -n logging
kubectl get elasticsearch -n logging
kubectl -n logging get pods --selector='elasticsearch.k8s.elastic.co/cluster-name=elastic'

3. 获取elasticsearch凭据

kubectl -n logging get secret elastic-es-elastic-user -o=jsonpath='{.data.elastic}' | base64 --decode; echo

4. 直接安装kibana了

修改了时区，和elasticsearch镜像一样都修改到了东八区，并将语言设置成了中文，关于selfSignedCertificate原因参照https://www.elastic.co/guide/en/cloud-on-k8s/1.4/k8s-kibana-http-configuration.html。

cat <<EOF > kibana.yaml
apiVersion: kibana.k8s.elastic.co/v1
kind: Kibana
metadata:
  name: elastic
  namespace: logging
spec:
  version: 7.12.0
  image: docker.elastic.co/kibana/kibana:7.12.0
  count: 1
  elasticsearchref:
    name: elastic
  http:
    tls:
      selfSignedCertificate:
        disabled: true
  podTemplate:
    spec:
      containers:
      - name: kibana
        env:
        - name: I18N_LOCALE
          value: zh-CN
        resources:
          requests:
            memory: 1Gi
          limits:
            memory: 2Gi
        volumeMounts:
        - name: timezone-volume
          mountPath: /etc/localtime
          readOnly: true
      volumes:
      - name: timezone-volume
        hostPath:
          path: /usr/share/zoneinfo/Asia/Shanghai
EOF

kubectl apply kibana.yaml

5. 对外映射kibana 服务

对外暴露都是用traefik https 代理，命名空间添加tls secret。绑定内部kibana service.然后外部slb udp代理443端口。但是现在腾讯云slb可以挂载多个证书了，就把这层剥离了，直接http方式到80端口。然后https 证书都在slb负载均衡代理了。这样省心了证书的管理，还有一点是可以在slb层直接收集接入层日志到cos。并可使用腾讯云自有的日志服务。

cat <<EOF > ingress.yaml
apiVersion: traefik.containo.us/v1alpha1
kind: IngressRoute
metadata:
  name: kibana-kb-http
  namespace: logging
spec:
  entryPoints:
    - web
  routes:
    - match: Host(`kibana.XXXXX.com`)
      kind: Rule
      services:
        - name: elastic-kb-http
          port: 5601
EOF          
kubectl apply -f ingress.yaml

输入用户名elastic 密码为上面获取的elasticsearch的凭据，进入管理页面。新界面很是酷炫

6. now 要添加快照仓库了

创建快照仓库跟S3方式是一样的，具体的可以参考https://blog.csdn.net/ypc123ypc/article/details/87860583这篇博文

PUT _snapshot/esbackup
{
  "type": "s3",
  "settings": {
    "endpoint":"cos.ap-shanghai.myqcloud.com",
    "region": "ap-shanghai",
    "compress" : "true",
    "bucket": "elastic-XXXXXXX"
  }
}