什么是Docker?
Docker 是一个开源项目，诞生于 2013 年初，最初是 dotCloud 公司内部的一个业余项目。它基于 Google 公司推出的 Go 语言实现。 项目后来加入了 Linux 基金会，遵从了 Apache 2.0 协议，项目代码在 GitHub 上进行维护。
Docker 自开源后受到广泛的关注和讨论，以至于 dotCloud 公司后来都改名为 Docker Inc。Redhat 已经在其 RHEL6.5 中集中支持 Docker；Google 也在其 PaaS 产品中广泛应用。
Docker 项目的目标是实现轻量级的操作系统虚拟化解决方案。 Docker 的基础是 Linux 容器（LXC）等技术。
在 LXC 的基础上 Docker 进行了进一步的封装，让用户不需要去关心容器的管理，使得操作更为简便。用户操作 Docker 的容器就像操作一个快速轻量级的虚拟机一样简单。
什么是Rancher?
Rancher是一个开源的容器管理平台，帮助构建企业私有容器服务，相当于KVM里的Openstack。官网地址是http://rancher.com/。以下图片摘自官方文档
Docker安装
-- 安装iptable防火墙支持NAT,关闭selinux,firewalld
[root@rancher-server]/#systemctl stop firewalld.service #停止firewall
[root@rancher-server]/#systemctl disable firewalld.service #禁止firewall开机启动
[root@rancher-server]/#yum install iptables -y
[root@rancher-server]/#systemctl start iptables.service
[root@rancher-server]/#systemctl enable iptables.service
[root@rancher-server]/#setenforce 0
[root@rancher-server]~# vim /etc/sysconfig/selinux
```
SELINUX=disabled
```
[root@rancher-server]echo "1" > /proc/sys/net/ipv4/ip_forward #打开包转发功能
[root@rancher-server]echo "net.ipv4.ip_forward = 1" >> /usr/lib/sysctl.d/00-system.conf #修改/usr/lib/sysctl.d/00-system.conf文件，让包转发功能在系统启动时自动生效:
[root@rancher-server]/#curl -sSL https://get.daocloud.io/docker | sh #执行docker安装脚本
[root@rancher-server]/#systemctl enable docker.service #Docker开机自启动
[root@rancher-server]/#systemctl start docker.service #启动Docker服务Daocloud DockerHub 加速
由于国内众所周知的原因，官方的DockerHub访问太慢，所以这里使用Daocloud的国内镜像加速
[root@rancher-server]/#curl -sSL https://get.daocloud.io/daomonit/install.sh | sh -s 0315a03e1618eb785a2bf410997e2f6ab0490df7后面的这一串字符串(0315a03e1618eb785a2bf410997e2f6ab0490df7 )每个账户都会有所不同，需要改一下，如果你直接复制粘贴那么你的容器就归我管理了·······。具体访问Daocloud官方网站即可https://dashboard.daocloud.io/nodes/new
Rancher Server 安装
[root@rancher-server]/#dao pull rancher/server
[root@rancher-server]/#docker run -d --restart=always -v /rancher/db:/var/lib/mysql --name rancher-server -p 8888:8080 rancher/server
49f3e6fd1588b21c3bcd40974a5eaf0da74d0a27e409e7759ddabbe213871308
--查看rancher/server 日志
[root@rancher-server]/#docker logs -f 49f3e6fd1588b21c3bcd40974a5eaf0da74d0a27e409e7759ddabbe213871308
···
···
2016-04-16 15:39:35,457 INFO [main] [ConsoleStatus] [1/32] [0ms] [0ms] Loading bootstrap
2016-04-16 15:39:35,536 INFO [main] [ConsoleStatus] [2/32] [79ms] [79ms] Loading config-defaults
2016-04-16 15:39:39,514 WARN [main] [liquibase] modifyDataType will lose primary key/autoincrement/not null settings for mysql. Use <sql> and re-specify all configuration if this is the case
2016-04-16 15:40:19,071 INFO [main] [ConsoleStatus] [3/32] [43614ms] [43535ms] Loading system
2016-04-16 15:40:19,110 INFO [main] [ConsoleStatus] [4/32] [43653ms] [39ms] Loading defaults
2016-04-16 15:40:19,266 INFO [main] [ConsoleStatus] [5/32] [43809ms] [155ms] Loading types
2016-04-16 15:40:22,146 INFO [main] [ConsoleStatus] [6/32] [46689ms] [2880ms] Loading system-services
2016-04-16 15:40:22,314 INFO [main] [ConsoleStatus] [7/32] [46857ms] [168ms] Loading agent-server
2016-04-16 15:40:22,480 INFO [main] [ConsoleStatus] [8/32] [47023ms] [166ms] Loading allocator-server
2016-04-16 15:40:23,467 INFO [main] [ConsoleStatus] [9/32] [48010ms] [987ms] Loading api-server
2016-04-16 15:40:24,846 INFO [main] [ConsoleStatus] [10/32] [49389ms] [1379ms] Loading iaas-api
2016-04-16 15:40:24,890 INFO [main] [ConsoleStatus] [11/32] [49433ms] [44ms] Loading archaius
2016-04-16 15:40:25,070 INFO [main] [ConsoleStatus] [12/32] [49613ms] [180ms] Loading core-model
2016-04-16 15:40:25,102 INFO [main] [ConsoleStatus] [13/32] [49645ms] [32ms] Loading core-object-defaults
2016-04-16 15:40:25,132 INFO [main] [ConsoleStatus] [14/32] [49675ms] [30ms] Loading encryption
2016-04-16 15:40:26,837 INFO [main] [ConsoleStatus] [15/32] [51380ms] [1705ms] Loading process
2016-04-16 15:40:26,869 INFO [main] [ConsoleStatus] [16/32] [51412ms] [32ms] Loading redis
2016-04-16 15:40:26,909 INFO [main] [ConsoleStatus] [17/32] [51452ms] [40ms] Starting bootstrap
2016-04-16 15:40:26,909 INFO [main] [ConsoleStatus] [18/32] [51452ms] [0ms] Starting config-defaults
2016-04-16 15:40:26,909 INFO [main] [ConsoleStatus] [19/32] [51452ms] [0ms] Starting system
2016-04-16 15:40:26,909 INFO [main] [ConsoleStatus] [20/32] [51452ms] [0ms] Starting defaults
2016-04-16 15:40:26,909 INFO [main] [ConsoleStatus] [21/32] [51452ms] [0ms] Starting types
2016-04-16 15:40:43,110 INFO [main] [ConsoleStatus] [22/32] [67653ms] [16201ms] Starting system-services
2016-04-16 15:40:43,110 INFO [main] [ConsoleStatus] [23/32] [67653ms] [0ms] Starting agent-server
2016-04-16 15:40:43,110 INFO [main] [ConsoleStatus] [24/32] [67653ms] [0ms] Starting allocator-server
2016-04-16 15:40:48,401 INFO [main] [ConsoleStatus] [25/32] [72944ms] [5291ms] Starting api-server
2016-04-16 15:40:49,451 INFO [main] [ConsoleStatus] [26/32] [73994ms] [1050ms] Starting iaas-api
2016-04-16 15:40:49,451 INFO [main] [ConsoleStatus] [27/32] [73994ms] [0ms] Starting archaius
2016-04-16 15:40:49,451 INFO [main] [ConsoleStatus] [28/32] [73994ms] [0ms] Starting core-model
2016-04-16 15:40:49,451 INFO [main] [ConsoleStatus] [29/32] [73994ms] [0ms] Starting core-object-defaults
2016-04-16 15:40:49,451 INFO [main] [ConsoleStatus] [30/32] [73994ms] [0ms] Starting encryption
2016-04-16 15:40:49,455 INFO [main] [ConsoleStatus] [31/32] [73998ms] [4ms] Starting process
2016-04-16 15:40:49,455 INFO [main] [ConsoleStatus] [32/32] [73998ms] [0ms] Starting redis
15:40:49.565 [main] INFO ConsoleStatus - [DONE ] [77190ms] Startup Succeeded, Listening on port 8081
time="2016-04-16T15:40:50Z" level=info msg="Starting websocket proxy. Listening on [:8080], Proxying to cattle API at [localhost:8081], Monitoring parent pid [10]."
time="2016-04-16T15:40:50Z" level=info msg="Downloading certificate from http://localhost:8081/v1/credentials/1c1/certificate"
time="2016-04-16T15:40:51Z" level=info msg="Starting Rancher Catalog service"
time="2016-04-16T15:40:51Z" level=info msg="Using catalog library=https://github.com/rancher/rancher-catalog.git"
time="2016-04-16T15:40:51Z" level=info msg="Using catalog community=https://github.com/rancher/community-catalog.git"
time="2016-04-16T15:40:51Z" level=info msg="Starting rancher-compose-executor" version=v0.7.4
time="2016-04-16T15:40:51Z" level=info msg="Setting log level" logLevel=info
time="2016-04-16T15:40:51Z" level=info msg="Starting go-machine-service..." gitcommit=dc97268
time="2016-04-16T15:40:51Z" level=info msg="Updating docker-machine-drivers from cattle."
time="2016-04-16T15:40:52Z" level=info msg="Initializing event router" workerCount=10
time="2016-04-16T15:40:52Z" level=info msg="Connection established"Rancher Server 基本配置
防火墙开启允许8888端口的访问
[root@rancher-server]iptables -A INPUT -p tcp --dport 8888 -j ACCEPT
[root@rancher-server]service iptables save浏览器访问Rancher UI
http://your-host:8888设置本地用户验证
这里选择LOCAL即本地
添加HOST
[root@rancher-server]/# sudo docker run -d --privileged -v /var/run/docker.sock:/var/run/docker.sock -v /var/lib/rancher:/var/lib/rancher rancher/agent:v1.0.1 http://192.168.2.22:8888/v1/scripts/F1D894A3C1468D289857:1460822400000:ohuf27vXvxwhVOEXHhW9Q5u5w04
1067bc91240a837fa2e6260458273f7f6897a50aaa812265bb7cd9df4ee41a79稍等几分钟Host就会出现在HOSTS里面
来源：oschina
链接：https://my.oschina.net/u/1767904/blog/661271