（八）Docker Swarm 搭建 Nginx 服务
1. Nginx镜像
docker-nginx的root路径是：/usr/share/nginx/html
[root@Thor _data]# docker run -dit --name nginx -P -v my_volume:/usr/share/nginx/html nginx:latest
[root@Thor _data]# ls
50x.html aliyun.jpg index.html
[root@Thor _data]# docker volume inspect my_volume
[
{
"Driver": "local",
"Labels": {},
"Mountpoint": "/var/lib/docker/volumes/my_volume/_data",
"Name": "my_volume",
"Options": {},
"Scope": "local"
}
]
[root@Thor _data]# docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
462b38e12ef2 nginx:latest "nginx -g 'daemon ..." 22 minutes ago Up 22 minutes 0.0.0.0:32770->80/tcp nginx
[root@Thor _data]#
http://10.86.10.214:32770/aliyun.jpg
2. Docker Swarm 搭建 Nginx 集群
[root@Thor volumes]# docker volume ls
DRIVER VOLUME NAME
local my_volume
[root@Thor volumes]#
[root@Thor volumes]#
[root@Thor volumes]# clear
[root@Thor volumes]#
[root@Thor volumes]# docker network ls
NETWORK ID NAME DRIVER SCOPE
996812025ea1 bridge bridge local
3996a5cca929 docker_gwbridge bridge local
7f779eaf12fc host host local
00ea96ba8181 my-net bridge local
bab9f30b8cbc none null local
[root@Thor volumes]#
[root@Thor volumes]# docker swarm init
Swarm initialized: current node (nawy26ys5d8t35poovzca09gf) is now a manager.
To add a worker to this swarm, run the following command:
docker swarm join \
--token SWMTKN-1-08lysjmybp1f2gi2z3myfy4rqjm5n0jy9h4ah3ap1uv7x16c9z-5plyyozoy6ty6p3vfmc9838y8 \
10.86.10.214:2377
To add a manager to this swarm, run 'docker swarm join-token manager' and follow the instructions.
[root@Thor volumes]# docker network ls
NETWORK ID NAME DRIVER SCOPE
996812025ea1 bridge bridge local
3996a5cca929 docker_gwbridge bridge local
7f779eaf12fc host host local
i9hsx10utcfw ingress overlay swarm
00ea96ba8181 my-net bridge local
bab9f30b8cbc none null local
[root@Thor volumes]# docker node ls
ID HOSTNAME STATUS AVAILABILITY MANAGER STATUS
nawy26ys5d8t35poovzca09gf * Thor Ready Active Leader
[root@Thor volumes]# docker service ls
ID NAME MODE REPLICAS IMAGE
[root@Thor volumes]# docker service create --replicas 3 -p 1992:80 --mount type=volume,source=my_volume,destination=/usr/share/nginx/html --name nginx nginx:latest
vb34nrb7rc86rag1hkw20dcia
[root@Thor volumes]# docker service ls
ID NAME MODE REPLICAS IMAGE
vb34nrb7rc86 nginx replicated 1/3 nginx:latest
[root@Thor volumes]# docker service ls
ID NAME MODE REPLICAS IMAGE
vb34nrb7rc86 nginx replicated 3/3 nginx:latest
[root@Thor volumes]#
[root@Thor volumes]# docker service ls
ID NAME MODE REPLICAS IMAGE
vb34nrb7rc86 nginx replicated 3/3 nginx:latest
[root@Thor volumes]#
[root@Thor volumes]# docker container ls
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
3f4fc77d40f5 nginx@sha256:1b109555ad28bb5ec429422ee136c5f5ab5ee6faaeb518836a5c9a3b6436a1bd "nginx -g 'daemon ..." 48 seconds ago Up 47 seconds 80/tcp nginx.3.25xb0q9ai3a0n1egw3bbu2ofk
e5275a076b6e nginx@sha256:1b109555ad28bb5ec429422ee136c5f5ab5ee6faaeb518836a5c9a3b6436a1bd "nginx -g 'daemon ..." 48 seconds ago Up 48 seconds 80/tcp nginx.1.xg5lm0izzbnpp54j7grqliv8h
7573ec039bbd nginx@sha256:1b109555ad28bb5ec429422ee136c5f5ab5ee6faaeb518836a5c9a3b6436a1bd "nginx -g 'daemon ..." 49 seconds ago Up 48 seconds 80/tcp nginx.2.t55k1n9yxqdw3xdony4ypt5bs
bb8e12657b50 google/cadvisor "/usr/bin/cadvisor..." 3 weeks ago Up 3 weeks 0.0.0.0:8080->8080/tcp cadvisor
[root@Thor volumes]#
[root@Thor volumes]# docker service ls
ID NAME MODE REPLICAS IMAGE
vb34nrb7rc86 nginx replicated 3/3 nginx:latest
[root@Thor volumes]# docker service --help
Usage: docker service COMMAND
Manage services
Options:
--help Print usage
Commands:
create Create a new service
inspect Display detailed information on one or more services
ls List services
ps List the tasks of a service
rm Remove one or more services
scale Scale one or multiple replicated services
update Update a service
Run 'docker service COMMAND --help' for more information on a command.
[root@Thor volumes]# docker service ps
"docker service ps" requires exactly 1 argument(s).
See 'docker service ps --help'.
Usage: docker service ps [OPTIONS] SERVICE
List the tasks of a service
[root@Thor volumes]# docker service ps nginx
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
xg5lm0izzbnp nginx.1 nginx:latest Thor Running Running about a minute ago
t55k1n9yxqdw nginx.2 nginx:latest Thor Running Running about a minute ago
25xb0q9ai3a0 nginx.3 nginx:latest Thor Running Running about a minute ago
[root@Thor volumes]# docker service inspect nginx
[
{
"ID": "vb34nrb7rc86rag1hkw20dcia",
"Version": {
"Index": 12
},
"CreatedAt": "2018-09-01T06:50:00.889456834Z",
"UpdatedAt": "2018-09-01T06:50:00.890534652Z",
"Spec": {
"Name": "nginx",
"TaskTemplate": {
"ContainerSpec": {
"Image": "nginx:latest@sha256:1b109555ad28bb5ec429422ee136c5f5ab5ee6faaeb518836a5c9a3b6436a1bd",
"Mounts": [
{
"Type": "volume",
"Source": "my_volume",
"Target": "/usr/share/nginx/html"
}
],
"DNSConfig": {}
},
"Resources": {
"Limits": {},
"Reservations": {}
},
"RestartPolicy": {
"Condition": "any",
"MaxAttempts": 0
},
"Placement": {},
"ForceUpdate": 0
},
"Mode": {
"Replicated": {
"Replicas": 3
}
},
"UpdateConfig": {
"Parallelism": 1,
"FailureAction": "pause",
"MaxFailureRatio": 0
},
"EndpointSpec": {
"Mode": "vip",
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 80,
"PublishedPort": 1992,
"PublishMode": "ingress"
}
]
}
},
"Endpoint": {
"Spec": {
"Mode": "vip",
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 80,
"PublishedPort": 1992,
"PublishMode": "ingress"
}
]
},
"Ports": [
{
"Protocol": "tcp",
"TargetPort": 80,
"PublishedPort": 1992,
"PublishMode": "ingress"
}
],
"VirtualIPs": [
{
"NetworkID": "i9hsx10utcfw3q6dxgx4stp7t",
"Addr": "10.255.0.4/16"
}
]
},
"UpdateStatus": {
"StartedAt": "0001-01-01T00:00:00Z",
"CompletedAt": "0001-01-01T00:00:00Z"
}
}
]
[root@Thor volumes]#
