Question

我有一个swarm管理器和两个swarm节点，我想根据我在docker deamon上定义的一些标签启动一个容器。这是我试过的命令：

docker -H :2376 run -e constraint:node==docker2 image/restservice
docker: Error response from daemon: Unable to find a node that satisfies the following conditions 
[available container slots]
[node==docker2].

如果我使用swarm运行docker info，这就是我得到的。

Containers: 13
 Running: 4
 Paused: 0
 Stopped: 9
Images: 54
Server Version: swarm/1.2.3
Role: primary
Strategy: spread
Filters: health, port, containerslots, dependency, affinity, constraint
Nodes: 2
 docker-node-1: 192.168.56.104:2375
  └ ID: I32N:D2XQ:I2FL:WDDR:YQ32:BJ62:XRWJ:7TDR:XD74:IH5M:Y2W2:4PD6
  └ Status: Healthy
  └ Containers: 7
  └ Reserved CPUs: 0 / 1
  └ Reserved Memory: 0 B / 2.061 GiB
  └ Labels: executiondriver=, kernelversion=3.16.0-4-amd64, node=docker2, operatingsystem=Debian GNU/Linux 8 (jessie), storagedriver=aufs
  └ UpdatedAt: 2016-08-16T18:47:05Z
  └ ServerVersion: 1.11.1
 docker-node-2: 192.168.56.106:2375
  └ ID: 6VAY:KCMX:JTTG:SQXW:BFMK:MPNJ:AWEL:F3LT:FCXI:SQRO:ORDK:MOHY
  └ Status: Healthy
  └ Containers: 6
  └ Reserved CPUs: 0 / 1
  └ Reserved Memory: 0 B / 2.061 GiB
  └ Labels: executiondriver=, kernelversion=3.16.0-4-amd64, node=docker3, operatingsystem=Debian GNU/Linux 8 (jessie), storagedriver=aufs
  └ UpdatedAt: 2016-08-16T18:47:19Z
  └ ServerVersion: 1.11.1
Plugins: 
 Volume: 
 Network: 
Kernel Version: 3.16.0-4-amd64
Operating System: linux
Architecture: amd64
CPUs: 2
Total Memory: 4.123 GiB
Name: bdf49c666300
Docker Root Dir: 
Debug mode (client): false
Debug mode (server): false
WARNING: No kernel memory limit support

我错过了吗？

Answer 1

在群体模式中，首先你不要运行容器本身。您运行将运行容器的服务。并且您的约束不会以正确的方式创建服务。我认为学习正确方法的最佳方法是通过docker service创建cli引用。 https://docs.docker.com/engine/reference/commandline/service_create/

docker swarm撰写约束

1 个答案: