DockerSwarm集群初始化

使用Dockers部署Nacos集群

前置条件：

• 多个机器节点

• 每个节点已经安装已经安装docker

准备机器

## 修改每个master节点的hostname
ip ad |grep -E 'ens33$' |awk '{print$2}' |sed  's/\(.*\)\/.*/swarm\.master\.\1/' |xargs hostnamectl set-hostname
## 修改每个work节点的hostname
ip ad |grep -E 'ens33$' |awk '{print$2}' |sed  's/\(.*\)\/.*/swarm\.work\.\1/' |xargs hostnamectl set-hostname

## 关闭防火墙
systemctl  stop  firewalld && systemctl disable firewalld

初始化集群

[root@localhost ~]# docker swarm init
Swarm initialized: current node (29mvlm64mr28njsgfqrscht6x) is now a manager.

To add a worker to this swarm, run the following command:

    docker swarm join --token SWMTKN-1-3s4bheco70rkawcgt3ix1pw90zkxclr1v4dv2yr51kh93g189w-dt31nfoxxmelzvrubghvqq12x 10.2.1.22:2377

To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.

加入集群

[root@localhost ~]# docker swarm join --token SWMTKN-1-3s4bheco70rkawcgt3ix1pw90zkxclr1v4dv2yr51kh93g189w-dt31nfoxxmelzvrubghvqq12x 10.2.1.22:2377
This node joined a swarm as a worker.

校验

[root@localhost ~]# docker node ls
ID                            HOSTNAME                 STATUS    AVAILABILITY   MANAGER STATUS   ENGINE VERSION
29mvlm64mr28njsgfqrscht6x *   swarm.master.10.2.1.22   Ready     Active         Leader           24.0.6
thw3aczwmzfurs3ec0ykpnvi1     swarm.worker.10.2.1.23   Ready     Active                          24.0.6

常用操作

## 查看所有节点
[root@localhost ~]# docker node ls
ID                            HOSTNAME                 STATUS    AVAILABILITY   MANAGER STATUS   ENGINE VERSION
29mvlm64mr28njsgfqrscht6x *   swarm.master.10.2.1.22   Ready     Active         Leader           24.0.6
thw3aczwmzfurs3ec0ykpnvi1     swarm.worker.10.2.1.23   Ready     Active                          24.0.6
## 给节点添加标签 
[root@localhost ~]# docker node update --label-add swarm=worker thw3aczwmzfurs3ec0ykpnvi1
thw3aczwmzfurs3ec0ykpnvi1
## 根据标签查看节点
[root@localhost ~]# docker node ls -f 'node.label=swarm'
ID                            HOSTNAME                 STATUS    AVAILABILITY   MANAGER STATUS   ENGINE VERSION
thw3aczwmzfurs3ec0ykpnvi1     swarm.worker.10.2.1.23   Ready     Active                          24.0.6