创建一个集群
[vagrant@node1 ~]$ docker swarm init --advertise-addr 192.168.9.101
Swarm initialized: current node (9fv7wb4zve235hltmchxprez7) is now a manager. To add a worker to this swarm, run the following command: docker swarm join --token SWMTKN--1wk8aduuxnay6ek866xaj31ixqnsib56b3p65hpzpcbbzo1qla-alcf8l1n7qpv7h7d6hg35scni 192.168.9.101: To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.
查看网络
[vagrant@node1 ~]$ docker network ls
NETWORK ID NAME DRIVER SCOPE
83c5df0f97ac bridge bridge local
7d81897af218 docker_gwbridge bridge local
b13ca5d9c552 host host local
0vfhc5c85dwi ingress overlay swarm
c427f9d683f4 none null local
分别在另外两台上面执行
[vagrant@node2 ~]$ docker swarm join --token SWMTKN--1wk8aduuxnay6ek866xaj31ixqnsib56b3p65hpzpcbbzo1qla-alcf8l1n7qpv7h7d6hg35scni 192.168.9.101:
This node joined a swarm as a worker.
[vagrant@node3 ~]$ docker swarm join --token SWMTKN--1wk8aduuxnay6ek866xaj31ixqnsib56b3p65hpzpcbbzo1qla-alcf8l1n7qpv7h7d6hg35scni 192.168.9.101:
This node joined a swarm as a worker.
查看集群节点
[vagrant@node1 ~]$ docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
9fv7wb4zve235hltmchxprez7 * node1 Ready Active Leader 19.03.
lypcp8z6s2boi2897ni0g5oc5 node2 Ready Active 19.03.
o0hmpgi59tms2lt65wlgzivpn node3 Ready Active 19.03.
提升node2,node3 为备用master,高可用
[vagrant@node1 ~]$ docker node promote node2
[vagrant@node1 ~]$ docker node promote node3
查看效果：
[vagrant@node1 ~]$ docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS ENGINE VERSION
9fv7wb4zve235hltmchxprez7 * node1 Ready Active Leader 19.03.
lypcp8z6s2boi2897ni0g5oc5 node2 Ready Active Reachable 19.03.
o0hmpgi59tms2lt65wlgzivpn node3 Ready Active 19.03.
创建服务
[vagrant@node1 ~]$ docker service create --name test1 alpine ping www.baidu.com
i5lip5az4w5ehv28q2fn3jxji
overall progress: out of tasks
/: running [==================================================>]
verify: Service converged
[vagrant@node1 ~]$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
i5lip5az4w5e test1 replicated / alpine:latest
创建nginx服务
vagrant@node1 ~]$ docker service create --name nginx nginx
m511a51xd6js4lflrrtr91vf7
overall progress: out of tasks
overall progress: out of tasks
overall progress: out of tasks
overall progress: out of tasks
overall progress: out of tasks
overall progress: out of tasks
/: running [==================================================>]
verify: Service converged
爆过 8080服务
[vagrant@node1 ~]$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
m511a51xd6js nginx replicated / nginx:latest
i5lip5az4w5e test1 replicated / alpine:latest
[vagrant@node1 ~]$ docker service update --publish-add : nginx
nginx
overall progress: out of tasks
/: running [==================================================>]
verify: Service converged
[vagrant@node1 ~]$
扩容:
[vagrant@node1 ~]$ docker service scale nginx=
nginx scaled to
overall progress: out of tasks
/: running [==================================================>]
/: running [==================================================>]
/: running [==================================================>]
删除服务:
[vagrant@node1 ~]$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
m511a51xd6js nginx replicated / nginx:latest *:->/tcp
i5lip5az4w5e test1 replicated / alpine:latest
[vagrant@node1 ~]$ docker service rm nginx
nginx
[vagrant@node1 ~]$ docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
i5lip5az4w5e test1 replicated / alpine:latest
创建网络
[vagrant@node1 ~]$ docker network ls
NETWORK ID NAME DRIVER SCOPE
83c5df0f97ac bridge bridge local
7d81897af218 docker_gwbridge bridge local
b13ca5d9c552 host host local
0vfhc5c85dwi ingress overlay swarm
c427f9d683f4 none null local
meps4tilzidi test_tanzi-overlay overlay swarm
[vagrant@node1 ~]$ docker network
connect create disconnect inspect ls prune rm
[vagrant@node1 ~]$ docker network create -d overlay tanzi-overlay
p3ssr7hpilfr1k6qry6tp8nc5
创建服务并指定网络
[vagrant@node1 ~]$ docker service create --network tanzi-overlay --name nginx -p : nginx
p3b79k42mvex1op5mwk9zfg1z
overall progress: out of tasks
/: running [==================================================>]
verify: Service converged
[vagrant@node1 ~]$ docker service create --network tanzi-overlay --name alpine alpine ping www.baidu.com
34tkwuppcgb5pqppj1zx22hhr
overall progress: out of tasks
/: running [==================================================>]
verify: Service converged
定义一种不给外面访问的dnsrr的访问模式
[vagrant@node1 ~]$ docker service create --name nginx-b --endpoint-mode dnsrr nginx
u9snzqigr65x9xwb131jkm1ao
overall progress: 1 out of 1 tasks
1/1: running [==================================================>]
verify: Service converged
更新一个服务
[vagrant@node1 ~]$ docker service update --network-add tanzi-overlay nginx-b
nginx-b
overall progress: out of tasks
/: running [==================================================>]
verify: Service converged
定一个组，确定依赖关系:
[vagrant@node1 ~]$ docker stack services
nginx test2
[vagrant@node1 ~]$ docker stack services nginx
ID NAME MODE REPLICAS IMAGE PORTS
7ti9w26od1i3 nginx_nginx replicated / nginx:latest *:->/tcp
cl1awlwzmxaq nginx_alpine replicated / alpine:latest
[vagrant@node1 ~]$ docker stack deploy -c test.yml nginx
Updating service nginx_alpine (id: cl1awlwzmxaqybwyz09a3sr5t)
Updating service nginx_nginx (id: 7ti9w26od1i3yec6jmxcalwfz)
[vagrant@node1 ~]$ docker stack services
"docker stack services" requires exactly argument.
See 'docker stack services --help'. Usage: docker stack services [OPTIONS] STACK List the services in the stack
[vagrant@node1 ~]$ docker stack services ls
Nothing found in stack: ls
[vagrant@node1 ~]$ docker stack services
nginx test2
[vagrant@node1 ~]$ docker stack services test2
ID NAME MODE REPLICAS IMAGE PORTS
celxgkxf3z31 test2_alpine replicated / alpine:latest
[vagrant@node1 ~]$ docker stack services nginx
ID NAME MODE REPLICAS IMAGE PORTS
7ti9w26od1i3 nginx_nginx replicated / nginx:latest *:->/tcp
cl1awlwzmxaq nginx_alpine replicated / alpine:latest
version: "3.7"
services:
nginx:
image: nginx
networks:
- "tanzi-overlay"
ports:
- "8080:80" alpine:
image: alpine
networks:
- "tanzi-overlay"
command:
- "ping"
- "nginx"
deploy:
replicas:
restart_policy:
condition: on-failure
resources:
limits:
cpus: "0.1"
memory: 50M
depends_on:
- nginx networks:
tanzi-overlay:
external: true