利用Docker-Machine创建虚拟Docker主机
## 下载docker-machine https://github.com/docker/machine/releases
sucd@homestead:~$ curl -L https://github.com/docker/machine/releases/download/v0.16.0/docker-machine-`uname -s`-`uname -m` >/tmp/docker-machine &&
chmod +x /tmp/docker-machine &&
sudo cp /tmp/docker-machine /usr/local/bin/docker-machine
## 查看版本号
sucd@homestead:~$ docker-machine -v
docker-machine version 0.16.0, build 702c267f
## 下载并安装virtualbox 参见 https://blog.51cto.com/autophp/2320962
[sucd@localhost ~]$ VBoxManage -v 报错
[sucd@localhost ~]$ sudo /sbin/vboxconfig
提示先安装gcc
[sucd@localhost ~]$ sudo yum -y install gcc
[sucd@localhost ~]$ sudo /sbin/vboxconfig
[sucd@localhost ~]$ VBoxManage -v
5.2.22r126460
成功
## 下载boot2docker.iso(一个基于Tiny Core Linux的系统，里面Docker啥的都帮你搞定了 v18.06.1-ce版本)
https://github.com/boot2docker/boot2docker/releases/
## 首先检查 /home/sucd/.docker/machine/cache 是否存在。不存在则创建
## 将 boot2docker.iso 文件 拷贝到 **/cache 上述目录下
## 创建虚拟机v1
[sucd@localhost ~]$ docker-machine create --driver=virtualbox v1
[sucd@localhost ~]$ docker-machine ls
NAME ACTIVE DRIVER STATE URL SWARM DOCKER ERRORS
v1 - virtualbox Running tcp://192.168.99.100:2376 v18.09.0
说明虚拟机创建成功
## docker-machine相关命令
doceker-machine ls ## 列出所有虚拟机
doceker-machine ip 虚拟机名称 ## 查看IP地址
doceker-machine stop/start 虚拟机名称 ## 停止和开启
doceker-machine env 虚拟机名称 ## 环境变量
doceker-machine ssh 虚拟机名称 ## SSH方式连接
## 移植images，具体操作步骤如下
[sucd@localhost ~]$ docker pull registry
[sucd@localhost ~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
centos nginx 14d81ad3d755 44 hours ago 303MB
centos httpd bbe52af5c400 44 hours ago 333MB
centos latest 75835a67d134 6 weeks ago 200MB
registry latest 2e2f252f3c88 2 months ago 33.3MB
[sucd@localhost ~]$ docker run -d -p 5000:5000 --name registry registry
85dfccab3f3a70da31068871be7ef56fd2e9eb651f900ee0c72d914090f3a46d
[sucd@localhost ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
85dfccab3f3a registry "/entrypoint.sh /etc…" 12 seconds ago Up 7 seconds 0.0.0.0:5000->5000/tcp registry
[sucd@localhost ~]$ docker tag centos:httpd localhost:5000/web
[sucd@localhost ~]$ docker push localhost:5000/web
[sucd@localhost ~]$ curl http://localhost:5000/v2/_catalog
{"repositories":["web"]}
## 在虚拟机中pull镜像
[sucd@localhost ~]$ docker-machine ssh v1
docker@v1:~$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
docker@v1:~$ docker pull 192.168.99.1:5000/web
Using default tag: latest
Error response from daemon: Get https://192.168.99.1:5000/v2/: http: server gave HTTP response to HTTPS client
提示报错，需要用hppts，我们可以让其不用https， 在主机 /etc/docker/daemon.json文件中加入 "insecure-registies":["192.168.99.1:5000"]
-- 主机中
[sucd@localhost ~]$ sudo vim /etc/docker/daemon.json
[sucd@localhost ~]$ cat /etc/docker/daemon.json
{
"registry-mirrors": ["https://z6z6dcky.mirror.aliyuncs.com"],
"insecure-registries":["192.168.99.1:5000"]
}
[sucd@localhost ~]$ sudo systemctl daemon-reload
[sucd@localhost ~]$ sudo systemctl restart docker
[sucd@localhost ~]$ docker start registry
-- 虚拟机中(先配置文件后退出)
docker@v1:~$ cat /etc/docker/daemon.json
{
"insecure-registries":["192.168.99.1:5000"]
}
[sucd@localhost ~]$ docker-machine restart v1
[sucd@localhost ~]$ docker-machine ssh v1
docker@v1:~$ docker pull 192.168.99.1:5000/web利用Docker-Machine在虚拟机中使用compose启动nginx负载均衡实例，设置IP转发在windows中访问
## 配置虚拟机docker用户环境变量(1、虚拟机中创建 .local/bin/目录 2、复制宿主机的.bash_profile到虚拟机 3、重新登录虚拟机验证)
[sucd@localhost ~]$ docker-machine ssh v1
docker@v1:~$ mkdir -p .local/bin/
[sucd@localhost ~]$ docker-machine scp /home/sucd/.bash_profile v1:/home/docker/
[sucd@localhost ~]$ docker-machine ssh v1
docker@v1:~$ echo $PATH
/usr/local/sbin:/usr/local/bin:/apps/bin:/usr/sbin:/usr/bin:/sbin:/bin:/home/docker/.local/bin:/home/docker/bin
## 拷贝 docker-compose
[sucd@localhost ~]$ docker-machine scp /usr/local/bin/docker-compose v1:/home/docker/.local/bin/
/home/docker/.local/bin/ 是虚拟机用户的一个环境变量(也可以自己设置)
docker@v1:~$ docker-compose -v
docker-compose version 1.23.1, build b02f1306
## 拷贝之前做的 compose配置文件
[sucd@localhost ~]$ docker-machine scp -r mycompose/ v1:/home/docker
## 虚拟机创建一个空文件夹 nginx(不用进入虚拟机)
[sucd@localhost ~]$ docker-machine ssh v1 mkdir nginx
## 挂载虚拟机目录到宿主机目录
[sucd@localhost ~]$ mkdir mnginx
[sucd@localhost ~]$ docker-machine mount v1:/home/docker/nginx /home/sucd/mnginx/
You must have a copy of the sshfs binary locally to use the mount feature
## 提示需要安装 sshfs
[sucd@localhost ~]$ sudo yum -y install epel-release
[sucd@localhost ~]$ sudo yum -y install fuse-sshfs
## 继续挂载
[sucd@localhost ~]$ docker-machine mount v1:/home/docker/nginx /home/sucd/mnginx/
## 将nginx目录文件全部复制到 mnginx/
[sucd@localhost mnginx]$ cd /home/sucd/nginx/
[sucd@localhost nginx]$ cp . /home/sucd/mnginx/ -r
## 进入虚拟机中并修改compose配置文件
[sucd@localhost ~]$ docker-machine ssh v1
docker@v1:~$ vi mycompose/docker-compose.yaml
docker@v1:~$ cat mycompose/docker-compose.yaml
services:
nginx:
container_name: mynginx
image: "nginx"
ports:
- "9090:80"
privileged: true
volumes:
- "/home/docker/nginx/conf/nginx.conf:/etc/nginx/nginx.conf"
networks:
mynginx-net:
ipv4_address: 192.156.0.2
healthcheck:
test: ["CMD", "curl","-s","-f", "http://localhost:80"]
interval: 5s
timeout: 5s
retries: 3
web1:
container_name: web1
image: "web"
ports:
- "8080:80"
privileged: true
volumes:
- "/home/docker/nginx/web1/:/var/www/html/"
networks:
mynginx-net:
ipv4_address: 192.156.0.6
healthcheck:
test: ["CMD", "curl","-s","-f", "http://localhost:80"]
interval: 5s
timeout: 5s
retries: 3
web2:
container_name: web2
image: "web"
ports:
- "8081:80"
privileged: true
volumes:
- "/home/docker/nginx/web2/:/var/www/html/"
networks:
mynginx-net:
ipv4_address: 192.156.0.3
healthcheck:
test: ["CMD", "curl","-s","-f", "http://localhost:80"]
interval: 5s
timeout: 5s
retries: 3
networks:
mynginx-net:
driver: bridge
ipam:
config:
- subnet: 192.156.0.0/16
version: "3"
## 进入mycompose并且启动多个服务
docker@v1:~$ cd mycompose/
docker@v1:~/mycompose$ docker-compose up -d
## 测试，宿主机中访问虚拟机服务web1和web2交替出现说明成
[sucd@localhost ~]$ curl $(docker-machine ip v1):9090
web1
[sucd@localhost ~]$ curl $(docker-machine ip v1):9090
web2Docker Swarm + Docker-machine创建集群
## 先创建两个虚拟机
[sucd@localhost ~]$ docker-machine create -d virtualbox --virtualbox-hostonly-cidr "192.168.90.1/24" m1
[sucd@localhost ~]$ docker-machine create -d virtualbox --virtualbox-hostonly-cidr "192.168.90.1/24" v1
[sucd@localhost ~]$ docker-machine ls
NAME ACTIVE DRIVER STATE URL SWARM DOCKER ERRORS
m1 - virtualbox Running tcp://192.168.90.100:2376 v18.09.0
v1 - virtualbox Running tcp://192.168.90.101:2376 v18.09.0
## 初始化一个集群
[sucd@localhost ~]$ docker-machine ssh m1
docker@m1:~$ docker swarm init --advertise-addr 192.168.99.100
docker@m1:~$ docker swarm join-token worker
## 加入节点
[sucd@localhost ~]$ docker-machine ssh v1 docker swarm join --token SWMTKN-1-0zlzmet1ggrmlbeijj9oalsotaj2edlqnkoezuyi7h397srims-5kxodjp43mklqwfp1uh46diak 192.168.90.100:2377
This node joined a swarm as a worker.
docker@m1:~$ docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
4a9jw24oq7hx0qenh5ayqw3v7 * m1 Ready Active Leader 18.09.0
hy5hw7xpvwmlhuzsikp40x39m v1 Ready Active 18.09.0
## 创建一个纯净的apache镜像
[sucd@localhost ~]$ docker pull httpd
[sucd@localhost ~]$ docker tag httpd:latest localhost:5000/httpd
[sucd@localhost ~]$ docker push localhost:5000/httpd
[sucd@localhost ~]$ docker rmi localhost:5000/httpd:latest
镜像的网站路径： /usr/local/apache2/htdocs/
配置文件： /usr/local/apach2/conf/httpd.conf
## 创建服务
在m1中 加入/etc/docker/daemon.json文件
sudo /etc/init.d/docker restart # 重启docker
docker pull 192.168.90.1:5000/httpd
docker tag 192.168.90.1:5000/httpd httpd && docker rmi 192.168.90.1:5000/httpd
在m1中创建空文件夹web，并添加一个index.html文件
doceker-machine ssh m1 mkdir web
在v1中执行相同的步骤
## 最后在m1中执行创建服务
docker@m1:~$ docker service create \
--replicas 2 \
--name myweb \
--publish 9091:80 \
--mount type=bind,source=/home/docker/web/,target=/usr/local/apache2/htdocs/ \
httpd
## 查看服务列表
docker@m1:~$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
v03oigi0wp0z myweb replicated 2/2 httpd:latest *:9090->80/tcp