一、docker machine概要
Docker Machine发布之前,你可能会遇到以下问题:
①你需要登录主机,按照主机及操作系统特有的安装以及配置步骤安装Docker,使其能运行Docker容器。
②你需要研发一套工具管理多个Docker主机并监控其状态。
③你在本地开发,产品部署在公有云平台,你希望能尽可能的减小两个环境的差异性
Docker Machine的出现解决了以上问题。
①Docker Machine简化了部署的复杂度,无论是在本机的虚拟机上还是在公有云平台,只需要一条命令便可搭建好Docker主机
②Docker Machine提供了多平台多Docker主机的集中管理
③Docker Machine 使应用由本地迁移到云端变得简单,只需要修改一下环境变量即可和任意Docker主机通信部署应用。
二、docker machine在远程主机部署docker
环境:
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docker-machine主机:192.168.1.9 docker版本:docker-ce
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docker主机:192.168.1.10
步骤:
①更新curl
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yum update curl -y
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②安装docker-machine
安装可参考docker-machine官网
linux下载路径:
按需求直接复制粘贴安装即可
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[root@node1 ~] # docker-machine -v
docker-machine version 0.13.0, build 9ba6da9
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③创建ssh密钥对,实现两主机无密登录
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[root@node1 ~] # ssh-keygen
[root@node1 ~] # ssh-copy-id 192.168.1.10
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④为本地下载更多镜像源,避免在创建machine时找不到软件包
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[root@node1 ~] # wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/rep... #此为阿里云centos7镜像源
[root@node1 ~] # yum install epel-release #第三方源
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⑤开启machine通讯端口
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[root@node1 ~] # firewall-cmd --add-port=2376/tcp --permanent
[root@node1 ~] # firewall-cmd --reload
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⑥创建docker主机,命名host1
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[root@node1 ~] # docker-machine create -d generic --generic-ip-address=192.168.1.10 host1
Running pre-create checks...
Creating machine...
(swarm-master) No SSH key specified. Assuming an existing key at the default location.
Waiting for machine to be running, this may take a few minutes...
Detecting operating system of created instance...
Waiting for SSH to be available...
Detecting the provisioner...
Provisioning with centos...
Running...
[root@node1 ~] # docker-machine ls
NAME ACTIVE DRIVER STATE URL SWARM DOCKER ERRORS
host1 - generic Running tcp: //192 .168.1.10:2376 v17.12.1-ce
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⑦变更docker环境变量
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[root@node1 ~] # docker-machine env host1
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export DOCKER_TLS_VERIFY="1"
export DOCKER_HOST="tcp://192.168.1.10:2376"
export DOCKER_CERT_PATH="/root/.docker/machine/machines/host1"
export DOCKER_MACHINE_NAME="host1"
# Run this command to configure your shell:
# eval $(docker-machine env host1)
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[root@node1 ~] # eval $(docker-machine env host1)
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⑧运行容器查看两端是否同步
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[root@node1 ~] # docker run -d busybox
[root@node1 ~] # docker-machine ssh host1
[root@host1 ~] # docker image ls
REPOSITORY TAG IMAGE ID CREATED SIZE
busybox latest f6e427c148a7 6 days ago 1.15MB
[root@host1 ~] # docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8d9b5005a264 busybox "sh" 17 seconds ago Up 16 seconds ago modest_joliot
[root@host1 ~] # exit
[root@node1 ~] # docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
8d9b5005a264 busybox "sh" 57seconds ago Up 16 seconds ago modest_joliot
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镜像容器同步测试成功
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:https://segmentfault.com/a/1190000014246627