swarm使用

server1 2 3 安装好docker

docker network rm mac_net1  删掉没用网络

server1

docker swarm init

server2 3

docker swarm join --token SWMTKN-1-09trdon7fqn41f2n9y21ce47jnt4e8b63quqvubrnqfiy470eg-cxodahazph6br1gwm7gzztucq 172.25.11.1:2377

server1

docker node ls

[[email protected] ~]# docker node ls
ID                            HOSTNAME              STATUS              AVAILABILITY        MANAGER STATUS      ENGINE VERSION
39zp7zw06n1rslzvtsxviqjnq *   server1.example.com   Ready               Active              Leader              18.06.1-ce
hb4j7x1yu4a40ahtcocn5w7li     server2               Ready               Active                                  18.06.1-ce
tzhpszakws2hkgwplg9w6cvlw     server3               Ready               Active                                  18.06.1-ce

 

server1

 

自建网络系统可以解析

docker network create -d overlay my_net1

docker service create --name web --network my_net1 --publish 80:80 --replicas 30 nginx

下面是使用自代网桥

docker service create --name web   --publish 80:80 --replicas 3 nginx

[[email protected] ~]# docker service ls
ID                  NAME                MODE                REPLICAS            IMAGE               PORTS
vxrdx3kum3yp        web                 replicated          3/3                 nginx:latest        *:80->80/tcp

yum install -y bridge-utils

[[email protected] ~]# brctl show
bridge name    bridge id        STP enabled    interfaces
docker0        8000.024204e7493f    no        veth0f01b5c
                            vethe3b9c72
                            vethe5e8102
docker_gwbridge        8000.0242c57bf5a2    no        veth26d89ae
                            vetha92f97b

server 1 2 3 写文件

echo web1>index.html

docker  cp index.html    ID号:/usr/share/nginx/html

docker service scale web=6 拉申六个容器

 

for i in {1..10};do curl 172.25.11.1;done

[[email protected] ~]# for i in {1..10};do curl 172.25.11.1;done
web6
web1
web3
web2
web5
web4
web6
web1
web3
web2

 

加入监控server1

docker load -i visualizer.tar

docker service create --name=viz --publish=8080:8080/tcp --constraint=node.role==manager --mount=type=bind,src=/var/run/docker.sock,dst=/var/run/docker.sock dockersamples/visualizer

172.25.11.1:8080

docker service rm web

版本更新

docker save rhel7:v1 > rhel7.tar

每个节点都需要  但是如果有自己的仓库就不要了，仓库建立之前博客有

 docker load -i rhel7.tar

server1

docker service update  --image rhel7:v1 --update-delay 5s  --update-parallelism 5  web

[[email protected] ~]# docker service update  --image rhel7:v1 --update-delay 5s  --update-parallelism 5  web
image rhel7:v1 could not be accessed on a registry to record
its digest. Each node will access rhel7:v1 independently,
possibly leading to different nodes running different
versions of the image.

web
overall progress: 6 out of 6 tasks
1/6: running   
2/6: running   
3/6: running   
4/6: running   
5/6: running   
6/6: running   
verify: Service converged

每隔5s更新一次 每次更新5个