docker容器化多活

docker使用基础

安装：mac intel chip：https://docs.docker.com/desktop/mac/install/

命令：

docker run -dp 3000:3000 getting-started

 ps  start<container_id>  stop<container_id>  images  rm <container_id>

概念：image container     docker run -d -p 80:80 docker/getting-started

打包

docker build  -t getting-started . (先编写Dockerfile 文件)

docker tag getting-started thinkqzl/getting-started

拉包  docker pull redis     docker run -d redis:会自动下载包

docker serach docker/getting-started。   docker search thinkqzl/getting-started

docker login  logout 

自己的工程： thinkqzl/helloworld

 有意思的是 docker基于曹组系统，也有操作系统的 images，并且只有 几十兆

docker pull ubuntu    docker run -it -p 18888:18888 ubuntu  /bin/bash   可以进入Ubuntu命令行操作。

实战

docker搭建rocketmq集群：部分参考：     https://zhuanlan.zhihu.com/p/166204662
下载namesrv ，broker，监控台的 包

docker pull styletang/rocketmq-console-ng:latest
docker pull rocketmqinc/rocketmq-namesrv:4.5.0-alpine
docker pull rocketmqinc/rocketmq-broker:4.5.0-alpine

可以新建一个rocketmq目录，把docker里的log等目录映射出来，如果不需要日志等文件映射，也可以不建文件目录

安装
docker run -name="namesrv-1" -p 6538:9876 -e "JAVA_OPT_EXT=-server -XMS128m -Xms128m -Xmn128m" -d rocketmqinc/rocketmq-namesrv:4.5.0-alpine

docker run -name="namesrv-2" -p 6539:9876 -e "JAVA_OPT_EXT=-server -XMS128m -Xms128m -Xmn128m" -d rocketmqinc/rocketmq-namesrv:4.5.0-alpine

docker run -it --name="broker-m1" -p 10919:10919 -p 10922:10922 -p 10921:10921 -e "JAVA_OPT_EXT=-server -XMS128m -Xms128m -Xmn128m" -e "BROKE_IP=192.168.57.211" -e "BROKER_NAME=qin1" -e "BROKER_CLUSTER_NAME=qinc" -e "NAMESRV_ADDR=192.168.57.211:6358;192.168.57.211:6359" -e "BROKER_ID=0" -d rocketmqinc/rocketmq-broker:4.5.0-alpine

docker run -it --name="broker-s1" -p 10929:10929 -p 10932:10932 -p 10931:10931 -e "JAVA_OPT_EXT=-server -XMS128m -Xms128m -Xmn128m" -e "BROKE_IP=192.168.57.211" -e "BROKER_NAME=qin1" -e "BROKER_CLUSTER_NAME=qinc" -e "NAMESRV_ADDR=192.168.57.211:6358;192.168.57.211:6359" -e "BROKER_ID=1" -d rocketmqinc/rocketmq-broker:4.5.0-alpine

docker run -it --name="broker-m2" -p 10939:10939 -p 10942:10942 -p 10941:10941 -e "JAVA_OPT_EXT=-server -XMS128m -Xms128m -Xmn128m" -e "BROKE_IP=192.168.57.211" -e "BROKER_NAME=qin2" -e "BROKER_CLUSTER_NAME=qinc" -e "NAMESRV_ADDR=192.168.57.211:6358;192.168.57.211:6359" -e "BROKER_ID=0" -d rocketmqinc/rocketmq-broker:4.5.0-alpine

docker run -it --name="broker-m2" -p 10949:10949 -p 10952:10952 -p 10951:10951 -e "JAVA_OPT_EXT=-server -XMS128m -Xms128m -Xmn128m" -e "BROKE_IP=192.168.57.211" -e "BROKER_NAME=qin2" -e "BROKER_CLUSTER_NAME=qinc" -e "NAMESRV_ADDR=192.168.57.211:6358;192.168.57.211:6359" -e "BROKER_ID=1" -d rocketmqinc/rocketmq-broker:4.5.0-alpine

docker run --name="rocket-mq-console" -p 8081:8080  -e  "NAMESRV_ADDR=188.*.*.151:6358;49.*.*.253:6358" -e  "JAVA_OPTS=-Xms128m -Xmx128m -Xmn128m" -d   styletang/rocketmq-console-ng:latest

登录到容器里，此时broker是启动失败的，需要在 加上

echo "brokerIP1=192.168.57.211">>$BROKER_CONFIG_FILE
echo "listenPort=10921" >>$BROKER_CONFIG_FILE

容器启动失败，想要进容器看错误可以加 /bin/bash

docker logs -f -t --tail 100 broker-m1 看报错




http://192.168.57.211:8081/
就可以看到控制台信息了
consumer：

public static void consumeMsg(String topic){
    DefaultMQPushConsumer c = new DefaultMQPushConsumer("testGroupC");
    c.setNamesrvAddr(addr);

    try {
        c.subscribe(topic,"");
    } catch (MQClientException e) {
        e.printStackTrace();
    }

    c.registerMessageListener(new MessageListenerConcurrently() {
        @Override
        public ConsumeConcurrentlyStatus consumeMessage(List<MessageExt> list, ConsumeConcurrentlyContext ctx) {
            for (MessageExt msg : list) {
                System.out.println(new String(msg.getBody()) + " - " + msg);
            }
            return ConsumeConcurrentlyStatus.CONSUME_SUCCESS;
        }
    });

    try {
        c.start();
    } catch (MQClientException e) {
        e.printStackTrace();
    }
    System.out.println("开始消费数据");
}

producer：

public static void sendMq(String topic ,String tag,String msg){
    DefaultMQProducer defaultMQProducer = new DefaultMQProducer("testGroupP");
    defaultMQProducer.setNamesrvAddr(addr);
    //defaultMQProducer.setVipChannelEnabled(false);
    try {
        defaultMQProducer.start();
        while (true){
            int num = -1;
            try {
                num = System.in.read();
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (num == 48){
                System.out.println("exit");
                break;
            }
            if (num == 10){
                continue;
            }
            System.out.println(num+msg);
            Message message = new Message(topic, tag, (num+msg).getBytes(RemotingHelper.DEFAULT_CHARSET));
            defaultMQProducer.send(message);
        }

        defaultMQProducer.shutdown();
    } catch (MQClientException e) {
        e.printStackTrace();
    }catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (RemotingException e) {
        e.printStackTrace();
    } catch (MQBrokerException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}



容器化：k8s




多活方案：