Docker Machine项目
负责在多种平台上快速安装Docker环境 基于go语言实现
支持多种后端驱动，包括虚拟机、本地主机和云平台
先要安装docker-machine
按着教程的写 总提示/usr/local/bin权限不足
只要曲线救国
$ curl -L https://github.com/docker/machine/releases/download/v0.13.0/docker-machine-`uname -s`-`uname -m` >/tmp/docker-machine && \
sudo install /tmp/docker-machine /usr/local/bin/docker-machine 想要创建一个docker主机作为管理节点
发现virtualbox没安装 一搜全是图形界面的
sudo sh -c 'echo "deb http://download.virtualbox.org/virtualbox/debian xenial contrib" >> /etc/apt/sources.list.d/virtualbox.list'
wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
sudo apt update
sudo apt install virtualbox-5.0 首先创建一个Docker主机作为管理节点
docker-machine create -d virtualbox manager
docker-machine ssh manager Docker Swarm
提供Docker容器集群服务，是Docker官方对容器云平台生态进行支持的核心方案，使用它可以将多个Docker主机封装为单个大型虚拟Docker主机，快速打造一套容器云平台。
Swarm mode内置key-value存储功能，提供了众多的新特性：具有容错能力的去中心化设计内置服务发现、负载平衡、路由网络、动态伸缩、滚动更新、安全传输……
节点
运行Docker主机可以主动初始化一个Swarm集群或者加入一个已经存在的Swarm集群，这样这个运行Docker的主机就成为一个Swarm集群的节点。
节点分为管理节点和工作节点，
管理节点用于Swarm集群的管理，docker swarm命令基本只能在管理节点执行。一个Swarm集群可以有多个管理节点，但只能有一个管理节点可以成为leader，leader通过raft协议实现。
工作节点是任务执行节点，管理节点将服务(service)下发给工作节点执行、管理节点默认也作为工作节点。
服务和任务
任务是Swarm中最小的调度单位，目前来说是一个单一的容器
服务是指一组任务的集合，服务定义了任务的属性。有两种模式：1.replicated services按照一定规则在各个工作节点上运行指定个数的任务 2.global services 每个工作节点上运行一个任务 两种模式通过docker service create --mode参数指定
在管理节点初始化一个Swarm集群
docker-machine ssh manager
## .
## ## ## ==
## ## ## ## ## ===
/"""""""""""""""""\___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\_______/
_ _ ____ _ _
| |__ ___ ___ | |_|___ \ __| | ___ ___| | _____ _ __
| '_ \ / _ \ / _ \| __| __) / _` |/ _ \ / __| |/ / _ \ '__|
| |_) | (_) | (_) | |_ / __/ (_| | (_) | (__| < __/ |
|_.__/ \___/ \___/ \__|_____\__,_|\___/ \___|_|\_\___|_|
Boot2Docker version 18.06.1-ce, build HEAD : c7e5c3e - Wed Aug 22 16:27:42 UTC 2018
Docker version 18.06.1-ce, build e68fc7a
docker@manager:~$ docker swarm init
Error response from daemon: could not choose an IP address to advertise since this system has multiple addresses on different interfaces (10.0.2.15 on eth0 and 192.168.99.100 on eth1) - specify one with --advertise-addr
docker@manager:~$ docker swarm init --advertise-addr 192.168.99.100
Swarm initialized: current node (3d3p8b4wikno2cidf9lvq4ah9) is now a manager.
To add a worker to this swarm, run the following command:
docker swarm join --token SWMTKN-1-09ig4rpyxwrodtlyn5b6vduz1wen0y8nlxnq7qn04oupvpzjku-auh2e29vpikkq6kdk0klpxczt 192.168.99.100:2377
To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.
docker@manager:~$ docker-machine create -d virtualbox worker1
-sh: docker-machine: not found
docker@manager:~$ exit
exit status 127
增加工作节点
zyj@zyj:~$ docker-machine create -d virtualbox worker1
Running pre-create checks...
Creating machine...
(worker1) Copying /home/zyj/.docker/machine/cache/boot2docker.iso to /home/zyj/.docker/machine/machines/worker1/boot2docker.iso...
(worker1) Creating VirtualBox VM...
(worker1) Creating SSH key...
(worker1) Starting the VM...
(worker1) Check network to re-create if needed...
(worker1) Waiting for an IP...
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 boot2docker...
Copying certs to the local machine directory...
Copying certs to the remote machine...
Setting Docker configuration on the remote daemon...
This machine has been allocated an IP address, but Docker Machine could not
reach it successfully.
SSH for the machine should still work, but connecting to exposed ports, such as
the Docker daemon port (usually <ip>:2376), may not work properly.
You may need to add the route manually, or use another related workaround.
This could be due to a VPN, proxy, or host file configuration issue.
You also might want to clear any VirtualBox host only interfaces you are not using.
Checking connection to Docker...
Docker is up and running!
To see how to connect your Docker Client to the Docker Engine running on this virtual machine, run: docker-machine env worker1
zyj@zyj:~$ docker-machine ssh worker1
## .
## ## ## ==
## ## ## ## ## ===
/"""""""""""""""""\___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\_______/
_ _ ____ _ _
| |__ ___ ___ | |_|___ \ __| | ___ ___| | _____ _ __
| '_ \ / _ \ / _ \| __| __) / _` |/ _ \ / __| |/ / _ \ '__|
| |_) | (_) | (_) | |_ / __/ (_| | (_) | (__| < __/ |
|_.__/ \___/ \___/ \__|_____\__,_|\___/ \___|_|\_\___|_|
Boot2Docker version 18.06.1-ce, build HEAD : c7e5c3e - Wed Aug 22 16:27:42 UTC 2018
Docker version 18.06.1-ce, build e68fc7a
docker@worker1:~$ docker swarm join --token SWMTKN-1-09ig4rpyxwrodtlyn5b6vduz1wen0y8nlxnq7qn04oupvpzjku-auh2e29vpikkq6kdk0kl
pxczt 192.168.99.100:2377
This node joined a swarm as a worker.
docker@worker1:~$ exit
zyj@zyj:~$ docker-machine create -d virtualbox worker2
Running pre-create checks...
Creating machine...
(worker2) Copying /home/zyj/.docker/machine/cache/boot2docker.iso to /home/zyj/.docker/machine/machines/worker2/boot2docker.iso...
(worker2) Creating VirtualBox VM...
(worker2) Creating SSH key...
(worker2) Starting the VM...
(worker2) Check network to re-create if needed...
(worker2) Waiting for an IP...
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 boot2docker...
Copying certs to the local machine directory...
Copying certs to the remote machine...
Setting Docker configuration on the remote daemon...
This machine has been allocated an IP address, but Docker Machine could not
reach it successfully.
SSH for the machine should still work, but connecting to exposed ports, such as
the Docker daemon port (usually <ip>:2376), may not work properly.
You may need to add the route manually, or use another related workaround.
This could be due to a VPN, proxy, or host file configuration issue.
You also might want to clear any VirtualBox host only interfaces you are not using.
Checking connection to Docker...
Docker is up and running!
To see how to connect your Docker Client to the Docker Engine running on this virtual machine, run: docker-machine env worker2
zyj@zyj:~$ docker-machine ssh worker2
## .
## ## ## ==
## ## ## ## ## ===
/"""""""""""""""""\___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\_______/
_ _ ____ _ _
| |__ ___ ___ | |_|___ \ __| | ___ ___| | _____ _ __
| '_ \ / _ \ / _ \| __| __) / _` |/ _ \ / __| |/ / _ \ '__|
| |_) | (_) | (_) | |_ / __/ (_| | (_) | (__| < __/ |
|_.__/ \___/ \___/ \__|_____\__,_|\___/ \___|_|\_\___|_|
Boot2Docker version 18.06.1-ce, build HEAD : c7e5c3e - Wed Aug 22 16:27:42 UTC 2018
Docker version 18.06.1-ce, build e68fc7a
docker@worker2:~$ docker swarm join --token SWMTKN-1-09ig4rpyxwrodtlyn5b6vduz1wen0y8nlxnq7qn04oupvpzjku-auh2e29vpikkq6kdk0kl
"docker swarm join" requires exactly 1 argument.
See 'docker swarm join --help'.
Usage: docker swarm join [OPTIONS] HOST:PORT
Join a swarm as a node and/or manager
docker@worker2:~$ exit
exit status 1
zyj@zyj:~$ docker node ls
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.38/nodes: dial unix /var/run/docker.sock: connect: permission denied
查看集群
zyj@zyj:~$ docker-machine ssh manager
## .
## ## ## ==
## ## ## ## ## ===
/"""""""""""""""""\___/ ===
~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ / ===- ~~~
\______ o __/
\ \ __/
\____\_______/
_ _ ____ _ _
| |__ ___ ___ | |_|___ \ __| | ___ ___| | _____ _ __
| '_ \ / _ \ / _ \| __| __) / _` |/ _ \ / __| |/ / _ \ '__|
| |_) | (_) | (_) | |_ / __/ (_| | (_) | (__| < __/ |
|_.__/ \___/ \___/ \__|_____\__,_|\___/ \___|_|\_\___|_|
Boot2Docker version 18.06.1-ce, build HEAD : c7e5c3e - Wed Aug 22 16:27:42 UTC 2018
Docker version 18.06.1-ce, build e68fc7a
docker@manager:~$ docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
3d3p8b4wikno2cidf9lvq4ah9 * manager Ready Active Leader 18.06.1-ce
kf3cbod1jtjljtpq3wmih1nnd worker1 Ready Active 18.06.1-ce
docker@manager:~$ exit
部署服务
发现好卡啊 增加服务伸缩的时候不能跨度太大
docker@manager:~$ docker service create --replicas 3 -p 80:80 --name nginx nginx:1.13.7-alpine
Error response from daemon: rpc error: code = InvalidArgument desc = port '80' is already in use by service 'nginx' (25kpadjw7naf5i7pvath4gckq) as an ingress port
docker@manager:~$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
25kpadjw7naf nginx replicated 1/3 nginx:1.13.7-alpine *:80->80/tcp
docker@manager:~$ docker service ps nginx
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
rpcb6k3om44j nginx.1 nginx:1.13.7-alpine worker1 Running Running 20 minutes ago
x2g9q3slk7cj nginx.2 nginx:1.13.7-alpine worker2 Running Preparing 20 minutes ago
qmqr63hg83hm nginx.3 nginx:1.13.7-alpine manager Running Preparing 20 minutes ago
docker@manager:~$ docker service logs nginx
nginx.1.rpcb6k3om44j@worker1 | 10.255.0.2 - - [27/Oct/2018:13:09:27 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0" "-"
nginx.1.rpcb6k3om44j@worker1 | 2018/10/27 13:09:27 [error] 6#6: *1 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: 10.255.0.2, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "192.168.99.100"
nginx.1.rpcb6k3om44j@worker1 | 10.255.0.2 - - [27/Oct/2018:13:09:27 +0000] "GET /favicon.ico HTTP/1.1" 404 169 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0" "-"
nginx.1.rpcb6k3om44j@worker1 | 10.255.0.3 - - [27/Oct/2018:13:09:53 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0" "-"
nginx.1.rpcb6k3om44j@worker1 | 2018/10/27 13:09:53 [error] 6#6: *2 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: 10.255.0.3, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "192.168.99.101"
nginx.1.rpcb6k3om44j@worker1 | 10.255.0.3 - - [27/Oct/2018:13:09:53 +0000] "GET /favicon.ico HTTP/1.1" 404 169 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0" "-"
nginx.1.rpcb6k3om44j@worker1 | 10.255.0.4 - - [27/Oct/2018:13:09:56 +0000] "GET / HTTP/1.1" 200 612 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0" "-"
nginx.1.rpcb6k3om44j@worker1 | 2018/10/27 13:09:56 [error] 6#6: *3 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: 10.255.0.4, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "192.168.99.102"
nginx.1.rpcb6k3om44j@worker1 | 10.255.0.4 - - [27/Oct/2018:13:09:56 +0000] "GET /favicon.ico HTTP/1.1" 404 169 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0" "-"
nginx.1.rpcb6k3om44j@worker1 | 2018/10/27 13:10:02 [error] 6#6: *2 open() "/usr/share/nginx/html/favicon.ico" failed (2: No such file or directory), client: 10.255.0.3, server: localhost, request: "GET /favicon.ico HTTP/1.1", host: "192.168.99.101"
nginx.1.rpcb6k3om44j@worker1 | 10.255.0.3 - - [27/Oct/2018:13:10:02 +0000] "GET /favicon.ico HTTP/1.1" 404 169 "-" "Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:63.0) Gecko/20100101 Firefox/63.0" "-"
docker@manager:~$ docker service scale nginx
Invalid scale specifier 'nginx'.
See 'docker service scale --help'.
Usage: docker service scale SERVICE=REPLICAS [SERVICE=REPLICAS...]
Scale one or multiple replicated services
docker@manager:~$ docker service scale nginx=4
nginx scaled to 4
overall progress: 2 out of 4 tasks
1/4: running [==================================================>]
2/4: preparing [=================================> ]
3/4: running [==================================================>]
4/4: preparing [=================================> ]
^COperation continuing in background.
Use `docker service ps nginx` to check progress.
docker@manager:~$ docker service scale nginx=2
nginx scaled to 2
overall progress: 1 out of 2 tasks
1/2: No such image: nginx:1.13.7-alpine@sha256:34aa80bb22c79235d466ccbbfa3659ff…
2/2: preparing [=================================> ]
verify: Detected task failure
^COperation continuing in background.
Use `docker service ps nginx` to check progress.
docker@manager:~$
docker@manager:~$ docker service scale nginx=1
nginx scaled to 1
overall progress: 1 out of 1 tasks
1/1: No such image: nginx:1.13.7-alpine@sha256:34aa80bb22c79235d466ccbbfa3659ff…
verify: Service converged
docker@manager:~$ docker service scale nginx=2
nginx scaled to 2
overall progress: 2 out of 2 tasks
1/2: running [==================================================>]
2/2: running [==================================================>]
verify: Service converged
docker@manager:~$ docker service scale nginx=3
nginx scaled to 3
overall progress: 3 out of 3 tasks
1/3: running [==================================================>]
2/3: running [==================================================>]
3/3: running [==================================================>]
verify: Service converged
docker@manager:~$ docker service scale nginx=4
nginx scaled to 4
overall progress: 4 out of 4 tasks
1/4: running [==================================================>]
2/4: running [==================================================>]
3/4: running [==================================================>]
4/4: running [==================================================>]
verify: Service converged
docker@manager:~$ docker service ps nginx
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
rpcb6k3om44j nginx.1 nginx:1.13.7-alpine worker1 Running Running 35 minutes ago
nmydx1pdczmz nginx.2 nginx:1.13.7-alpine worker1 Running Running 4 minutes ago
szs1czc5rl3b \_ nginx.2 nginx:1.13.7-alpine worker2 Shutdown Rejected 5 minutes ago "No such image: nginx:1.13.7-a…"
nxiimbadqo5l \_ nginx.2 nginx:1.13.7-alpine worker2 Shutdown Rejected 5 minutes ago "No such image: nginx:1.13.7-a…"
r467n114oprv \_ nginx.2 nginx:1.13.7-alpine worker2 Shutdown Rejected 5 minutes ago "No such image: nginx:1.13.7-a…"
2olvgqrc8oho \_ nginx.2 nginx:1.13.7-alpine manager Shutdown Rejected 5 minutes ago "No such image: nginx:1.13.7-a…"
me25so8xq05m nginx.3 nginx:1.13.7-alpine worker1 Running Running 3 minutes ago
tfas8njxfdoi \_ nginx.3 nginx:1.13.7-alpine worker2 Shutdown Rejected 3 minutes ago "No such image: nginx:1.13.7-a…"
nqvg5cmuhtq7 \_ nginx.3 nginx:1.13.7-alpine worker2 Shutdown Rejected 4 minutes ago "No such image: nginx:1.13.7-a…"
9j4t3hmsj1hj \_ nginx.3 nginx:1.13.7-alpine worker2 Shutdown Rejected 4 minutes ago "No such image: nginx:1.13.7-a…"
ddfv6esx5rc0 \_ nginx.3 nginx:1.13.7-alpine manager Shutdown Rejected 4 minutes ago "No such image: nginx:1.13.7-a…"
x69ojwjapiek nginx.4 nginx:1.13.7-alpine worker1 Running Running 2 minutes ago
q9qft98oe0pn \_ nginx.4 nginx:1.13.7-alpine worker2 Shutdown Rejected 2 minutes ago "No such image: nginx:1.13.7-a…"
8tqtosdf7m6j \_ nginx.4 nginx:1.13.7-alpine worker2 Shutdown Rejected 2 minutes ago "No such image: nginx:1.13.7-a…"
1tn3fn92r6sb \_ nginx.4 nginx:1.13.7-alpine worker2 Shutdown Rejected 2 minutes ago "No such image: nginx:1.13.7-a…"
ugaz2553rmn7 \_ nginx.4 nginx:1.13.7-alpine worker2 Shutdown Rejected 2 minutes ago "No such image: nginx:1.13.7-a…"
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