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blog/swarm模式下docker-compose配置zookeeper分布式集群.md

+#swarm模式下docker-compose配置zookeeper分布式集群
+
+##$ 前言
+* 记录一次,在docker swarm 下利用docker-compose创建的3个节点的zookeer分布式集群.
+
+##$ docker环境下常用到的命令
+~~~
+####docker启动单个容器
+docker start 容器名
+####docker停止单个容器
+docker stop 容器名
+####停止删除所有容器
+docker stop $(docker ps -a -q)  && docker rm   $(docker ps -a -q) -f
+####删除所有镜像
+docker image rm $(docker images -q) -f
+####删除无用的卷
+docker volume prune
+####查看docker日志文件大小
+ls -lh $(find /var/lib/docker/containers/ -name *-json.log)
+####查找大文件
+find / -type f -size +100M
+####docker-compose方式创建启动容器
+docker-compose -f zk.yml up -d
+####docker-compose方式停止销毁容器
+docker-compose -f zk.yml down
+~~~
+
+
+## 首先创建一个Docker网卡
+~~~
+#创建swarm网络
+docker network create -d overlay service_ov_net  --attachable  --subnet 172.169.0.0/16 --gateway 
+~~~
+
+## zookeeper配置 zk.yml 配置说明
+* x-logging 配置docker容器的日志文件大小最大256m 最多3个
+* networks 指定网络为我们上面创建的网络
+* volumes 不需要刻意创建,docker默认会在/var/lib/docker/volume/ 进行创建
+* ZOO_MY_ID: 配置各个节点的ID
+* ZOO_SERVERS: server.1 配置各个节点的连接地址
+* ZOO_AUTOPURGE_PURGEINTERVAL: 配置1个小时清理一下zk日志
+* ZOO_AUTOPURGE_SNAPRETAINCOUNT: 配置最多保留3个zk日志
+
+
+## zk.yml 源配置
+~~~
+version: '3.4'
+
+x-logging:
+  &default-logging
+  options:
+    max-size: '256m'
+    max-file: '3'
+  driver: json-file
+  
+networks:
+  ov_net:
+    external:
+      name: service_ov_net
+
+volumes:
+  zk-1-data:
+  zk-2-data:
+  zk-3-data:
+  zk-1-datalog:
+  zk-2-datalog:
+  zk-3-datalog:
+    
+services:
+  zk-1:
+    image: zookeeper:3.4.14
+    logging: *default-logging
+    restart: always
+    hostname: zk-1 
+    ports:
+        - "2181:2181"
+    volumes:
+        - zk-1-data:/data 
+        - zk-1-datalog:/datalog 
+    environment:
+      ZOO_MY_ID: 1
+      ZOO_SERVERS: server.1=0.0.0.0:2888:3888 server.2=zk-2:2888:3888 server.3=zk-3:2888:3888
+      ZOO_AUTOPURGE_PURGEINTERVAL: 1
+      ZOO_AUTOPURGE_SNAPRETAINCOUNT: 3
+    networks:
+        ov_net:
+            ipv4_address: 172.169.11.101
+  zk-2:
+    image: zookeeper:3.4.14
+    logging: *default-logging
+    restart: always
+    hostname: zk-2 
+    volumes:
+        - zk-2-data:/data 
+        - zk-2-datalog:/datalog
+    environment:
+      ZOO_MY_ID: 2
+      ZOO_SERVERS: server.1=zk-1:2888:3888 server.2=0.0.0.0:2888:3888 server.3=zk-3:2888:3888
+      ZOO_AUTOPURGE_PURGEINTERVAL: 1
+      ZOO_AUTOPURGE_SNAPRETAINCOUNT: 3
+    networks:
+        ov_net:
+            ipv4_address: 172.169.11.102
+  zk-3:
+    image: zookeeper:3.4.14
+    logging: *default-logging
+    restart: always
+    hostname: zk-3 
+    volumes:
+        - zk-3-data:/data 
+        - zk-3-datalog:/datalog
+    environment:
+      ZOO_MY_ID: 3
+      ZOO_SERVERS: server.1=zk-1:2888:3888 server.2=zk-2:2888:3888 server.3=0.0.0.0:2888:3888
+      ZOO_AUTOPURGE_PURGEINTERVAL: 1
+      ZOO_AUTOPURGE_SNAPRETAINCOUNT: 3
+    networks:
+        ov_net:
+            ipv4_address: 172.169.11.103
+~~~