docker ce 构建docker swarm

安装 docker-ce
三台机器都执行：
配置安装包
sudo yum install -y yum-utils device-mapper-persistent-data

配置阿里云镜像源
sudo yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

重建 Yum 缓存 并安装 Docker-CE
yum update
sudo yum install docker-ce

启动docker ce
sudo systemctl enable docker
sudo systemctl start docker

启动不成功执行一下命令
vi /etc/docker/daemon.json
{
“storage-driver”: “overlay2”,
“storage-opts”: [
“overlay2.override_kernel_check=true”
]
}

docker swarm 构建
注意 更改机器的host 名字 dockerswarm 中的集群node 名字也将随之改变
server1 server2 server3
三台都执行
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
yum -y install wget vim net-tools zlib zlib-devel gcc gcc-c++ libtool openssl openssl-devel telnet
sed -i ‘/^SELINUX/s/enforcing/disabled/g’ /etc/selinux/config
sudo setenforce 0

docker swarm init
Swarm initialized: current node (mtieasakcwbaktqeups4528ot) is now a manager.

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

docker swarm join \
--token SWMTKN-1-4xdsbmvrgkd1190w85rq1hxkcf3eelpi0cba15jig8g3gofruv-73dokex4kkwpikacatc5p3wc2 \
172.25.17.1:2377

将上面结果的这一段代码复制到server2和server3端，就可以将servre2和server3加入到swarm集群中：

docker swarm join \
--token SWMTKN-1-4xdsbmvrgkd1190w85rq1hxkcf3eelpi0cba15jig8g3gofruv-73dokex4kkwpikacatc5p3wc2 \
172.25.17.1:2377

docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
bfix2u0ahdlfyawnak66iwowc server2 Ready Active
mtieasakcwbaktqeups4528ot * server1 Ready Active Leader
nc7eqtmt7ga3mxw9ri96q2jst server3 Ready Active

docker swarm 集群建立完成下面的文章都将以这篇为蓝本构建公司级的docker swarm集群