【dcoker】swarm+volume 管理数据

原创已于 2024-07-11 09:48:44 修改 · 181 阅读

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于 2024-07-05 09:11:09 首次发布

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1.创建卷

[root@es1 ~]# docker volume ls
DRIVER    VOLUME NAME
local     57e8c3f618dc65491e03d49c2891d6d3c2f9d5d2c19ec4b8a8e5ea2e0b4d8b6c
local     sspu_mysqlconfig
local     volume-nfs-tomcat

docker volume create nginxdata
[root@es1 ~]# docker volume create nginxdata
nginxdata
[root@es1 ~]# docker volume ls
DRIVER    VOLUME NAME
local     57e8c3f618dc65491e03d49c2891d6d3c2f9d5d2c19ec4b8a8e5ea2e0b4d8b6c
local     nginxdata
local     sspu_mysqlconfig
local     volume-nfs-tomcat

2.创建服务

--192.168.1.7:
docker service create --replicas 3 --mount type=volume,src=nginxdata,dst=/usr/share/nginx/html \
-p 8011:80 --name mynginx2

[root@es1 ~]# docker service create --replicas 3 --mount type=volume,src=nginxdata,dst=/usr/share/nginx/html \
> -p 8011:80 --name mynginx2 192.168.1.11:443/myharbor/nginx:latest
qarid9y7hru13p0jw6y9sziyq
overall progress: 3 out of 3 tasks 
1/3: running   
2/3: running   
3/3: running   
verify: Service converged 

[root@es1 ~]# netstat -an |grep 8011
tcp6       0      0 :::8011                 :::*                    LISTEN 

--主机端口:8011,容器端口:80;创建3个容器实例。
[root@es1 ~]# docker service ls
ID             NAME       MODE         REPLICAS   IMAGE                                    PORTS
32d752myr4og   mynginx1   replicated   2/2        192.168.1.11:443/myharbor/nginx:latest   *:8010->80/tcp
qarid9y7hru1   mynginx2   replicated   3/3        192.168.1.11:443/myharbor/nginx:latest   *:8011->80/tcp

[root@es1 ~]# docker service ps mynginx2
ID             NAME         IMAGE                                    NODE      DESIRED STATE   CURRENT STATE                ERROR     PORTS
rh0tounjciej   mynginx2.1   192.168.1.11:443/myharbor/nginx:latest   es2       Running         Running about a minute ago             
f46p1ricylxb   mynginx2.2   192.168.1.11:443/myharbor/nginx:latest   es3       Running         Running about a minute ago             
qiqbyvd9yhel   mynginx2.3   192.168.1.11:443/myharbor/nginx:latest   es1       Running         Running about a minute ago

3.查看数据卷

[root@es1 ~]# docker volume inspect nginxdata
[
    {
        "CreatedAt": "2024-07-04T19:46:00+08:00",
        "Driver": "local",
        "Labels": {},
        "Mountpoint": "/data/docker/data/volumes/nginxdata/_data",
        "Name": "nginxdata",
        "Options": {},
        "Scope": "local"
    }
]

--查看
[root@es1 ~]# docker service inspect mynginx2
[
    {
        "ID": "qarid9y7hru13p0jw6y9sziyq",
        "Version": {
            "Index": 231
        },
        "CreatedAt": "2024-07-04T11:46:00.390324105Z",
        "UpdatedAt": "2024-07-04T11:46:00.395043961Z",
        "Spec": {
            "Name": "mynginx2",
            "Labels": {},
            "TaskTemplate": {
                "ContainerSpec": {
                    "Image": "192.168.1.11:443/myharbor/nginx:latest@sha256:ee89b00528ff4f02f2405e4ee221743ebc3f8e8dd0bfd5c4c20a2fa2aaa7ede3",
                    "Init": false,
                    "Mounts": [
                        {
                            "Type": "volume",
                            "Source": "nginxdata",
                            "Target": "/usr/share/nginx/html"
                        }
                    ],
                    "StopGracePeriod": 10000000000,
                    "DNSConfig": {},
                    "Isolation": "default"
                },
                "Resources": {
                    "Limits": {},
                    "Reservations": {}
                },
                "RestartPolicy": {
                    "Condition": "any",
                    "Delay": 5000000000,
                    "MaxAttempts": 0
                },
                "Placement": {
                    "Platforms": [
                        {
                            "Architecture": "amd64",
                            "OS": "linux"
                        }
                    ]
                },
                "ForceUpdate": 0,
                "Runtime": "container"
            },
            "Mode": {
                "Replicated": {
                    "Replicas": 3
                }
            },
            "UpdateConfig": {
                "Parallelism": 1,
                "FailureAction": "pause",
                "Monitor": 5000000000,
                "MaxFailureRatio": 0,
                "Order": "stop-first"
            },
            "RollbackConfig": {
                "Parallelism": 1,
                "FailureAction": "pause",
                "Monitor": 5000000000,
                "MaxFailureRatio": 0,
                "Order": "stop-first"
            },
            "EndpointSpec": {
                "Mode": "vip",
                "Ports": [
                    {
                        "Protocol": "tcp",
                        "TargetPort": 80,
                        "PublishedPort": 8011,
                        "PublishMode": "ingress"
                    }
                ]
            }
        },
        "Endpoint": {
            "Spec": {
                "Mode": "vip",
                "Ports": [
                    {
                        "Protocol": "tcp",
                        "TargetPort": 80,
                        "PublishedPort": 8011,
                        "PublishMode": "ingress"
                    }
                ]
            },
            "Ports": [
                {
                    "Protocol": "tcp",
                    "TargetPort": 80,
                    "PublishedPort": 8011,
                    "PublishMode": "ingress"
                }
            ],
            "VirtualIPs": [
                {
                    "NetworkID": "ok60ir4yv3bsmbl8rvfn17qfy",
                    "Addr": "10.0.0.5/24"
                }
            ]
        }
    }
]

[root@es3 nginxdata]# ll  /data/docker/data/volumes/nginxdata/_data/
total 8
-rw-r--r-- 1 root root 497 Dec 28  2021 50x.html
-rw-r--r-- 1 root root 615 Dec 28  2021 index.html
[root@es2 volumes]# ll  /data/docker/data/volumes/nginxdata/_data/
total 8
-rw-r--r-- 1 root root 497 Dec 28  2021 50x.html
-rw-r--r-- 1 root root 615 Dec 28  2021 index.html
[root@es1 data]# ll  /data/docker/data/volumes/nginxdata/_data/
total 8
-rw-r--r-- 1 root root 497 Dec 28  2021 50x.html
-rw-r--r-- 1 root root 615 Dec 28  2021 index.html
--三个节点均有卷。

4.写入html

7:
echo "nginxdata1" > /data/docker/data/volumes/nginxdata/_data/nginx.html
9:
echo "nginxdata2" > /data/docker/data/volumes/nginxdata/_data/nginx.html
10:
echo "nginxdata3" > /data/docker/data/volumes/nginxdata/_data/nginx.html

5.验证:



[root@es1 _data]# curl  http://192.168.1.7:8011/nginx.html 
nginxdata2
[root@es1 _data]# curl  http://192.168.1.7:8011/nginx.html 
nginxdata3
[root@es1 _data]# curl  http://192.168.1.7:8011/nginx.html 
nginxdata1
[root@es1 _data]# curl  http://192.168.1.7:8011/nginx.html 
nginxdata2
[root@es1 _data]# curl  http://192.168.1.7:8011/nginx.html 
nginxdata3
[root@es1 _data]# curl  http://192.168.1.7:8011/nginx.html 
nginxdata1

--由此可见，任意访问:7/9/10节点已经自动负载均衡。
[root@es1 _data]# curl  http://192.168.1.9:8011/nginx.html 
nginxdata1
[root@es1 _data]# curl  http://192.168.1.9:8011/nginx.html 
nginxdata3
[root@es1 _data]# curl  http://192.168.1.9:8011/nginx.html 
nginxdata2
[root@es1 _data]# curl  http://192.168.1.9:8011/nginx.html 
nginxdata1
[root@es1 _data]# curl  http://192.168.1.9:8011/nginx.html 
nginxdata3
[root@es1 _data]# curl  http://192.168.1.9:8011/nginx.html 
nginxdata2