标签:style man create like his exe des log replicat
想直接一步创建集群的小伙伴直接按以下步骤安装(再往后是记录自己出过的错):
docker build -t 144.202.127.156/library/mongodb:3.4.10 .
docker push 144.202.127.156/library/mongodb:3.4.10 注:记得把地址换成自己的镜像仓库
FROM alpine:edge MAINTAINER chengcuichao RUN apk update && echo http://dl-4.alpinelinux.org/alpine/edge/testing >> /etc/apk/repositories && apk add --no-cache mongodb numactl numactl-tools
kubectl create -f mongodb.yml
在此注意几下几点:
1)、将为外置存储的Secret和storageclass换成自己的。 注:我用的是ceph,其他的根据自己的更改,也可以不用持久化存储,就当测试用。
2)、镜像换成自己的镜像地址。
3)、启动参数--replSet换成自己的,不换也可以。
apiVersion: v1 kind: Namespace metadata: name: basic-app --- apiVersion: v1 kind: Secret metadata: namespace: basic-app name: ceph-secret type: "kubernetes.io/rbd" data: key: QVFEYmVRTmJZQ1B4TFJBQUg0QS9Tb01NZjF6NHB3L0p1Y3ZUQnc9PQ== --- apiVersion: v1 kind: Secret metadata: namespace: basic-app name: mongo-key type: Opaque data: key: UERVU0hWVU9KT1ZQVUVYT0JXWU8= --- apiVersion: v1 kind: ConfigMap metadata: name: mongodb-config namespace: basic-app data: mongodb: | systemLog: destination: file path: "/var/log/mongodb/mongodb.log" logAppend: true processManagement: fork: false net: port: 27017 bindIp: 0.0.0.0 security: keyFile: "/etc/conf.d/secret-key/key" authorization: enabled storage: dbPath: /var/lib/mongodb setParameter: enableLocalhostAuthBypass: true authenticationMechanisms: SCRAM-SHA-1 mongos: | MONGOS_EXEC="/usr/bin/mongos" MONGOS_RUN="/var/run/mongodb" MONGOS_USER="mongodb" MONGOS_IP="127.0.0.1" MONGOS_PORT="27018" MONGOS_CONFIGDB="" MONGOS_OPTIONS="" --- apiVersion: v1 kind: Service metadata: name: mongodb namespace: basic-app labels: name: mongo spec: clusterIP: None ports: - port: 27017 targetPort: 27017 selector: app: mongo-cluster --- apiVersion: apps/v1beta1 kind: StatefulSet metadata: name: mongodb namespace: basic-app spec: serviceName: mongodb replicas: 3 template: metadata: labels: app: mongo-cluster spec: terminationGracePeriodSeconds: 10 containers: - name: mongod image: 144.202.127.156/library/mongodb:3.6.5 command: ["sh", "-c", "chmod 600 -R /etc/conf.d/secret-key;numactl --interleave=all mongod -f /etc/conf.d/mongodb --auth --replSet icsoc"] resources: limits: cpu: 2 memory: 2G requests: cpu: 1 memory: 1G volumeMounts: - name: mongodb-data mountPath: /var/lib/mongodb - name: mongo-config mountPath: /etc/conf.d - name: timezone-config mountPath: /etc/localtime - name: secret-key mountPath: /etc/conf.d/ ports: - containerPort: 27017 livenessProbe: tcpSocket: port: 27017 initialDelaySeconds: 15 periodSeconds: 20 volumes: - name: mongo-config configMap: name: mongodb-config - name: timezone-config hostPath: path: /usr/share/zoneinfo/Asia/Shanghai - name: secret-key secret: secretName: mongo-key volumeClaimTemplates: - metadata: name: mongodb-data annotations: volume.beta.kubernetes.io/storage-class: "ceph-db" spec: accessModes: [ "ReadWriteOnce" ] resources: requests: storage: 50Gi
1、连进容器内: kubectl exec -it mongodb-0 /bin/sh 2、执行初始化副本集: mongo rs.initiate({_id: "icsoc", version: 1, members: [ { _id: 0, host : "mongodb-0.mongodb.basic-app.svc.cluster.local:27017" }, { _id: 1, host : "mongodb-1.mongodb.basic-app.svc.cluster.local:27017" }, { _id: 2, host : "mongodb-2.mongodb.basic-app.svc.cluster.local:27017" } ]}); 2、创建管理用户: 具体可参考:https://docs.mongodb.com/manual/tutorial/enable-authentication/ use admin db.createUser( { user: "myUserAdmin", pwd: "P@ssw0rd", roles: [ { role: "userAdminAnyDatabase", db: "admin" } ] } ) db.auth("myUserAdmin","P@ssw0rd")
3、之后就可以连进去创建用户,赋予角色权限使用。
1)、先在一个基础的镜像里安装mongodb,启动正常后无报错。
2)、再理清楚mogodb副本集集群是怎么启动的。
3)、之后编写在kubernetes创建资源的文件。
4)、先创建看看那进行不下去,再一个个解决。
编写好的Dockerfile如下:
FROM alpine:edge MAINTAINER chengcuichao RUN apk update && echo http://dl-4.alpinelinux.org/alpine/edge/testing >> /etc/apk/repositories && apk add --no-cache mongodb numactl COPY run.sh /root/ RUN chmod +x /root/run.sh CMD /root/run.sh
先在docker上启动,mongo连进去后报错:
Server has startup warnings: 2018-07-15T12:25:52.064+0800 W CONTROL [main] --diaglog is deprecated and will be removed in a future release 2018-07-15T12:25:52.183+0800 I STORAGE [initandlisten] 2018-07-15T12:25:52.183+0800 I STORAGE [initandlisten] ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine 2018-07-15T12:25:52.183+0800 I STORAGE [initandlisten] ** See http://dochub.mongodb.org/core/prodnotes-filesystem 第一个报错 2018-07-15T12:26:02.364+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 第二个 2018-07-15T12:26:02.364+0800 I CONTROL [initandlisten] 2018-07-15T12:26:02.364+0800 I CONTROL [initandlisten] 2018-07-15T12:26:02.364+0800 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine. 2018-07-15T12:26:02.364+0800 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems: 2018-07-15T12:26:02.364+0800 I CONTROL [initandlisten] ** numactl --interleave=all mongod [other options] 第三个 2018-07-15T12:26:02.365+0800 I CONTROL [initandlisten] 2018-07-15T12:26:02.365+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is ‘always‘. 2018-07-15T12:26:02.365+0800 I CONTROL [initandlisten] ** We suggest setting it to ‘never‘ 第四个 2018-07-15T12:26:02.365+0800 I CONTROL [initandlisten] 2018-07-15T12:26:02.365+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is ‘always‘. 2018-07-15T12:26:02.365+0800 I CONTROL [initandlisten] ** We suggest setting it to ‘never‘ 第五个
1)、第一个报错是文件系统的问题,还没解决 。
2)、第二个报错是要开启认证,在启动参数上加入--auth就可以。
3)、第三个报错需要在mongod命令前面加上numactl --interleave=all,在docker容器里执行numactl --interleave=all mongod -f /etc/conf.d/mongodb 在直接用docker起的容器里执行会报错:
set_mempolicy: Operation not permitted setting interleave mask: Operation not permitted
但在statefulset的yml文件加上command: ["sh", "-c", "numactl --interleave=all mongod -f /etc/conf.d/mongodb --bind_ip 0.0.0.0"],kubectl create -f mongodb.yml创建后不会报错。
4)、第四个和第五个报错需要执行:echo never > /sys/kernel/mm/transparent_hugepage/enabled,echo never > /sys/kernel/mm/transparent_hugepage/defrag,
但是在容器里执行会报错,就算用initContainers
来为mongodb的容器创建运行环境,但是还会报:
/bin/sh: can‘t create /sys/kernel/mm/transparent_hugepage/enabled: Read-only file system
/bin/sh: can‘t create /sys/kernel/mm/transparent_hugepage/defrag: Read-only file system
有两种解决方法:
1、在所有的node节点执行上面两条命令,这样执行后创建后就没有报错了。
2、创建demonset(暂时还没搞懂),具体可以参考:http://pauldone.blogspot.com/2017/06/mongodb-kubernetes-production-settings.html
官方文档:https://docs.mongodb.com/manual/replication/
专门在k8s上安装Mongodb:http://k8smongodb.net/
kubernetes上安装MongoDB-3.6.5集群副本集方式
标签:style man create like his exe des log replicat
原文地址:https://www.cnblogs.com/chimeiwangliang/p/9315552.html