swarm
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机器节点准备:
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需要一台manager机器,内存和硬盘大一点,多台worker机器。
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1、安装alma Linux 9.3,设置主机名、静态IP。
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2、设置主机名。sudo hostnamectl status
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sudo hostnamectl set-hostname [swarm-manager01、swarm-worker01等等]
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3、设置静态IP,swarm mode需要使用静态IP,不能使用动态IP。
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sudo vim /etc/NetworkManager/system-connections/ens160.nmconnection
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...
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[ipv4]
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address1=92.168.31.251/24,192.168.31.1 (ip自己替换)
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dns=114.114.114.114;
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method=manual
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...
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nmcli c reload # 重新加载配置文件
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nmcli c up ens160
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4、关闭防火墙,sudo systemctl stop firewalld
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sudo systemctl disable firewalld
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sudo systemctl disable --now firewalld
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sudo firewall-cmd --state
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5、关闭SELinux,sudo setenforce 0
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sudo sed -ri 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
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sudo sestatus
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6、主机系统时间同步配置,
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sudo yum install -y chrony
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sudo vim /etc/chrony.conf
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注释掉第三行原有的时间服务器地址,设置为阿里云的时间服务地址:
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# pool 2.almalinux.pool.ntp.org iburst
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pool ntp1.aliyun.com iburst
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....
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sudo systemctl enable --now chronyd
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sudo chronyc -a makestep
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Docker install
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1、 sudo yum install -y yum-utils
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2、 sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
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3、 sudo yum install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
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4、 sudo usermod -aG docker $USER
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5、 newgrp docker
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6、 sudo systemctl enable docker.service
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7、 sudo systemctl enable containerd.service
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8、 sudo systemctl start docker
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9、 docker run hello-world
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delete swarm
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On manager机器上,执行:docker swarm leave --force
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Create a swarm
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On manager机器上
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1、 docker swarm init --advertise-addr 192.168.3.188
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记住输出的命令
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2、 docker info
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3、 docker node ls
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On worker机器上
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在manager机器上执行docker swarm join-token worker可以再次获取token
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1、docker swarm join --token xxx【刚才输出的命令】
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2、在manager机器上执行:docker node ls
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