Question

我在谷歌云平台上有一个小型的工作码头群。只有两个节点，一个是nginx和php，另一个是mysql。

现在似乎从主节点我无法连接到工作节点上的mysql。

SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known

同样的问题也来自容器内的shell。

我在初始化swarm时使用了--advertise-addr标志：

docker swarm init --advertise-addr 10.156.0.3

然后我从第二个节点成功加入了群体：

docker swarm join --token my-token 10.156.0.3:2377

部署也是成功的

docker stack deploy --compose-file docker-compose.yml test

Creating network test_default
Creating service test_mysql
Creating service test_web
Creating service test_app

（在docker-compose.yml中没有网络定义，我使用默认的docker）

节点：

ID                            HOSTNAME       STATUS              AVAILABILITY        MANAGER STATUS      ENGINE VERSION
oz1ebgrp1a68brxi0nd1gdr2k     mysql-001      Ready               Active                                  18.03.1-ce
ndy11zyxi0wym8mjmgh8op1ni *   app-001        Ready               Active              Leader              18.03.1-ce

docker stack ps test

ID                  NAME                          IMAGE                                 NODE        DESIRED STATE       CURRENT STATE           ERROR      PORTS 
9afwjgtpy8lc        test_app.1                  127.0.0.1:5000/app:latest             app-001       Running             Running 8 minutes ago     
mgajupmcai0t        test_web.1                  127.0.0.1:5000/web:latest             app-001       Running             Running 8 minutes ago           
s17jvkukahl7        test_mysql.1                mysql:5.7                             mysql-001     Running             Running 8 minutes ago

docker networks：

NETWORK ID          NAME                DRIVER              SCOPE
9084b39892f4        bridge              bridge              local
ofqtewx039fl        test_default        overlay             swarm
5cc9d4554bea        docker_gwbridge     bridge              local
97fbd06a23b5        host                host                local
x8f408klk2ms        ingress             overlay             swarm
ca1b849ea73a        none                null                local

这是我的码头信息

Containers: 12
 Running: 3
 Paused: 0
 Stopped: 9
Images: 35
Server Version: 18.03.1-ce
Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
 Volume: local
 Network: bridge host macvlan null overlay
 Log: awslogs fluentd gcplogs gelf journald json-file logentries splunk syslog
Swarm: active
 NodeID: ndy11zyxi0wym8mjmgh8op1ni
 Is Manager: true
 ClusterID: q23l1v6dav3u4anqqu51nwx0r
 Managers: 1
 Nodes: 2
 Orchestration:
  Task History Retention Limit: 5
 Raft:
  Snapshot Interval: 10000
  Number of Old Snapshots to Retain: 0
  Heartbeat Tick: 1
  Election Tick: 10
 Dispatcher:
  Heartbeat Period: 5 seconds
Total Memory: 14.09GiB
 CA Configuration:
  Expiry Duration: 3 months
  Force Rotate: 0
 Autolock Managers: false
 Root Rotation In Progress: false
 Node Address: 10.156.0.3
 Manager Addresses:
  10.156.0.3:2377
Runtimes: runc
Default Runtime: runc
Init Binary: docker-init
containerd version: 773c489c9c1b21a6d78b5c538cd395416ec50f88
runc version: 4fc53a81fb7c994640722ac585fa9ca548971871
init version: 949e6fa
Security Options:
 apparmor
 seccomp
  Profile: default
Kernel Version: 4.13.0-1019-gcp
Operating System: Ubuntu 16.04.4 LTS
OSType: linux
Architecture: x86_64
CPUs: 16
Total Memory: 14.09GiB
Name: app-001
ID: IWKK:NWRJ:HKAQ:3JSQ:7H3L:2WXC:IIJ7:OEKB:4ARR:T7FY:VAWR:HOPL
Docker Root Dir: /var/lib/docker
Debug Mode (client): false
Debug Mode (server): false
Registry: https://index.docker.io/v1/
Labels:
Experimental: false
Insecure Registries:
 127.0.0.0/8
Live Restore Enabled: false

几周前这个群体工作正常。几个星期以来我一直不需要这个应用程序所以我关掉了所有的机器。同时swarm-node.crt已过期，所以今天当我打开机器时，我不得不删除服务和swarm并从头开始重新创建它。结果是我无法从一个节点上的容器连接到另一个节点上的容器。

任何帮助将不胜感激。

更新：

这里是docker-compose.yml

version: '3'
services:
  web:
    image: 127.0.0.1:5000/web
    build:
      context: ./web
    volumes:
      - ./test:/var/www
    build:
    ports:
      - 80:80
    links:
      - app
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints:
          - node.hostname == app-001
  app:
    image: 127.0.0.1:5000/app
    build:
      context: ./app
    volumes:
      - ./test:/var/www
    depends_on:
      - mysql
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints:
          - node.hostname == app-001
  mysql:
    image: mysql:5.7
    volumes:
      - /mnt/disks/ssd-001/mysql:/var/lib/mysql
      - /mnt/disks/buckets/common-storage-001/backup/mysql:/backup
    environment:
      - "MYSQL_DATABASE=test"
      - "MYSQL_USER=test"
      - "MYSQL_PASSWORD=*****"
      - "MYSQL_ROOT_PASSWORD=*****"
    command: mysqld --key-buffer-size=32M --max-allowed-packet=16M --myisam-recover-options=FORCE,BACKUP --tmp-table-size=32M --query-cache-type=0 --query-cache-size=0 --max-heap-table-size=32M --max-connections=500 --thread-cache-size=50 --innodb-flush-method=O_DIRECT --innodb-log-file-size=512M --innodb-buffer-pool-size=16G --open-files-limit=65535
    deploy:
      mode: replicated
      replicas: 1
      placement:
        constraints:
          - node.hostname == mysql-001

Docker swarm无法解析其他节点上的服务名称

0 个答案: