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Redis部署文档

三思原创大约 7 分钟redisredis部署文档

本文介绍了如何在单点和集群模式下部署Redis。在单点模式下，通过上传安装脚本和介质，配置Redis实例并进行启停操作；在集群模式下，通过修改安装脚本和静默安装技术，自动初始化Redis集群并开放端口。最后还提供了K8s环境下创建Service的指导。

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Redis部署文档

redis部署文档

依赖说明：

  • yum源：安装gcc编译redis源代码（已安装gcc可不配置yum源）
  • root权限：用以调整防火墙策略，配置redis为系统服务实现自启动

redis版本说明：

5.0.5

生产环境推荐集群模式

单点集成

1、yum可用性检测

判断是否含有gcc

rpm -qa|grep gcc|grep -v lib

如回显如下，直接跳过此步骤

gcc-4.8.5-28.el7_5.1.x86_64

尝试yum安装gcc

yum install -y gcc
echo $?

若返回值为0，证明安装完成，如非0说明yum有问题，需调整本机的yum配置

yum配置方式参考

2、下载安装脚本及介质

互联网环境下可通过东软vpn访问此地址

redis-deploy-latest.tar.gz下载地址

3、上传安装

上传redis-deploy-latest.tar.gz至/tmp下，root用户执行以下命令安装

cd /tmp && tar zxvf redis-deploy-latest.tar.gz && cd redis/simple && sh install.sh

  • redis信息说明

    • redis配置文件
    /etc/redis-6379.conf
    • redis端口号
    6379

  • redis启停指令

    • 启动实例
    redis-server /etc/redis-6379.conf
    • 查看实例
    ps -ef|grep redis
curl 127.0.0.1:6379
    • 关闭实例
    redis-cli -a redis shutdown
    • 客户端连接
    redis-cli -p 6379 -a redis

集群模式

  • 集群模式说明

    • 采用多节点分片模式，进行数据存储，不存在​db​概念，不同系统使用同一redis cluster​ 注意key​不可重复，建议加前缀
    • 建议：三节点三主三从模式
    • 资源利用率：由于每个主节点存在一个副本集，内存资源使用率为：集群节点内存总和/副本集数
    • 安装流程示意如下（通过sshpass技术实现静默安装，自动安装初始化redis集群）

假设redis节点如下：

  • 192.168.40.151
  • 192.168.40.152
  • 192.168.40.153

yum可用性检测

判断是否含有gcc

rpm -qa|grep gcc|grep -v lib

如回显如下，直接跳过此步骤

gcc-4.8.5-28.el7_5.1.x86_64

尝试yum安装gcc

yum install -y gcc
echo $?

若返回值为0，证明安装完成，如非0说明yum有问题，需调整本机的yum配置

yum配置方式参考

下载安装脚本及介质

互联网环境下可通过vpn访问此地址

redis-deploy-latest.tar.gz下载地址

版本信息

上传修改安装脚本

上传至集群中任意一节点的/tmp下，root用户执行以下命令安装

cd /tmp && tar zxvf redis-deploy-latest.tar.gz && cd redis/cluster

修改install.sh​​内容，修改为实际IP地址与root口令

NODE1=192.168.40.151     #redis实际节点1IP地址
NODE2=192.168.40.152     #redis实际节点2IP地址
NODE3=192.168.40.153     #redis实际节点3IP地址
NODE1_PASSWORD=123456    #节点1 root密码
NODE2_PASSWORD=123456    #节点2 root密码
NODE3_PASSWORD=123456    #节点3 root密码
SSH_PORT=22              #三个节点ssh端口

运行安装脚本

sh install.sh

成功结果如下

查询集群状态

redis-cli -c -p 26379 -a redis cluster nodes

开放端口

仅作说明，安装脚本已自动修改防火墙策略

每个节点需要开放以下四个端口：

  • 26379 (redis服务端与客户端通信端口)
  • 26380 (redis服务端与客户端通信端口)
  • 36379 (redis服务端间通信端口)
  • 36380 (redis服务端间通信端口)

关闭redis

redis-cli -p 26379 -a redis shutdown
redis-cli -p 26380 -a redis shutdown

客户端连接（建议neusoft用户：neusoft/1234%^&*）

redis-cli -p 26379 -c -a redis
redis-cli -p 26379 -c -a redis

配置样例

spring:
  redis:
    password: redis
    cluster:
      nodes:
      - 192.168.40.151:26379
      - 192.168.40.151:26380
      - 192.168.40.152:26379
      - 192.168.40.152:26380
      - 192.168.40.153:26379
      - 192.168.40.153:26380
      max-redirects: 3

k8s

创建service account

mkdir -p /k8s/redis

cat > /k8s/redis/rbac.yaml <<EOF
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: redis-provisioner-runner
rules:
- apiGroups: [""]
  resources: ["persistentvolumes"]
  verbs: ["get", "list", "watch", "create", "delete"]
- apiGroups: [""]
  resources: ["persistentvolumeclaims"]
  verbs: ["get", "list", "watch", "update"]
- apiGroups: [""]
  resources: ["endpoints"]
  verbs: ["get", "list", "watch", "create", "update", "patch"]
- apiGroups: ["storage.k8s.io"]
  resources: ["storageclasses"]
  verbs: ["get", "list", "watch"]
- apiGroups: [""]
  resources: ["events"]
  verbs: ["create", "update", "patch"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: redis-provisioner
subjects:
- kind: ServiceAccount
  name: redis-provisioner
  namespace: default
roleRef:
  kind: ClusterRole
  name: redis-provisioner-runner
  apiGroup: rbac.authorization.k8s.io
---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: redis-provisioner
rules:
- apiGroups: [""]
  resources: ["endpoints"]
  verbs: ["get", "list", "watch", "create", "update", "patch"]
---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: redis-provisioner
subjects:
- kind: ServiceAccount
  name: redis-provisioner
  # replace with namespace where provisioner is deployed
  namespace: default
roleRef:
  kind: Role
  name: redis-provisioner
  apiGroup: rbac.authorization.k8s.io
EOF

创建

kubectl create -f /k8s/redis/rbac.yaml

k8s主节点创建NFS

cat > /k8s/redis/nfs.yaml <<EOF
apiVersion: v1
kind: ServiceAccount
metadata:
  name: redis-provisioner
---
kind: Deployment
apiVersion: extensions/v1beta1
metadata:
  name: redis-nfs-provisioner
spec:
  replicas: 1
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: redis-nfs-provisioner
    spec:
      imagePullSecrets:
      - name: harborsecret
      serviceAccount: redis-nfs-provisioner
      containers:
      - name: redis-nfs-provisioner
        image: harbor.neusoft.com/external_storage/nfs-client-provisioner:latest
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - name: nfs-client-root
          mountPath: /persistentvolumes
        env:
        - name: PROVISIONER_NAME
          value: fuseim.pri/ifs
        - name: NFS_SERVER
          value: 192.168.174.68
        - name: NFS_PATH
          value: /data/nfs/redis
      volumes:
      - name: nfs-client-root
        nfs:
          server: 192.168.174.68
          path: /data/nfs/redis
EOF

创建

kubectl apply -f /k8s/redis/nfs.yaml

k8s主节点创建NFS StorageClass

cat > /k8s/redis/class.yaml <<EOF
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: redis-managed-nfs-storage
provisioner: fuseim.pri/ifs
parameters:
  archiveOnDelete: "false"
EOF

创建

kubectl apply -f /k8s/redis/class.yaml

发布nacos

cat > /k8s/redis/redis.yaml <<EOF
---
apiVersion: v1
kind: Service
metadata:
  name: redis-headless
  labels:
    app: redis
  annotations:
    service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
spec:
  ports:
    - port: 6379
      name: server
      targetPort: 6379
  clusterIP: None
  selector:
    app: redis
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: nacos-cm
data:
  mysql.master.db.name: "nacos_devtest"
  mysql.master.port: "3306"
  mysql.slave.port: "3306"
  mysql.master.user: "nacos"
  mysql.master.password: "nacos"
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: nacos
spec:
  serviceName: nacos-headless
  replicas: 2
  template:
    metadata:
      labels:
        app: nacos
      annotations:
        pod.alpha.kubernetes.io/initialized: "true"
    spec:
      imagePullSecrets:
      - name: harborsecret
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: "app"
                    operator: In
                    values:
                      - nacos
              topologyKey: "kubernetes.io/hostname"
      serviceAccountName: nfs-client-provisioner
      initContainers:
        - name: peer-finder-plugin-install
          image: harbor.neusoft.com/nacos/nacos-peer-finder-plugin:latest
          imagePullPolicy: Always
          volumeMounts:
            - mountPath: "/home/nacos/plugins/peer-finder"
              name: plugindir
      containers:
        - name: nacos
          imagePullPolicy: Always
          image: harbor.neusoft.com/nacos/nacos-server:latest
          resources:
            requests:
              memory: "2Gi"
              cpu: "500m"
          ports:
            - containerPort: 8848
              name: client-port
          env:
            - name: NACOS_REPLICAS
              value: "3"
            - name: SERVICE_NAME
              value: "nacos-headless"
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  apiVersion: v1
                  fieldPath: metadata.namespace
            - name: MYSQL_MASTER_SERVICE_DB_NAME
              valueFrom:
                configMapKeyRef:
                  name: nacos-cm
                  key: mysql.master.db.name
            - name: MYSQL_MASTER_SERVICE_PORT
              valueFrom:
                configMapKeyRef:
                  name: nacos-cm
                  key: mysql.master.port
            - name: MYSQL_SLAVE_SERVICE_PORT
              valueFrom:
                configMapKeyRef:
                  name: nacos-cm
                  key: mysql.slave.port
            - name: MYSQL_MASTER_SERVICE_USER
              valueFrom:
                configMapKeyRef:
                  name: nacos-cm
                  key: mysql.master.user
            - name: MYSQL_MASTER_SERVICE_PASSWORD
              valueFrom:
                configMapKeyRef:
                  name: nacos-cm
                  key: mysql.master.password
            - name: NACOS_SERVER_PORT
              value: "8848"
            - name: PREFER_HOST_MODE
              value: "hostname"
          readinessProbe:
            httpGet:
              port: client-port
              path: /nacos/v1/console/health/readiness
            initialDelaySeconds: 60
            timeoutSeconds: 3
          livenessProbe:
            httpGet:
              port: client-port
              path: /nacos/v1/console/health/liveness
            initialDelaySeconds: 60
            timeoutSeconds: 3
          volumeMounts:
            - name: plugindir
              mountPath: /home/nacos/plugins/peer-finder
            - name: datadir
              mountPath: /home/nacos/data
            - name: logdir
              mountPath: /home/nacos/logs
  volumeClaimTemplates:
    - metadata:
        name: plugindir
        annotations:
          volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
      spec:
        accessModes: [ "ReadWriteMany" ]
        resources:
          requests:
            storage: 5Gi
    - metadata:
        name: datadir
        annotations:
          volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
      spec:
        accessModes: [ "ReadWriteMany" ]
        resources:
          requests:
            storage: 5Gi
    - metadata:
        name: logdir
        annotations:
          volume.beta.kubernetes.io/storage-class: "managed-nfs-storage"
      spec:
        accessModes: [ "ReadWriteMany" ]
        resources:
          requests:
            storage: 5Gi
  selector:
    matchLabels:
      app: redis
EOF

发布

kubectl apply -f /k8s/redis/redis.yaml
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