如何通过标签过滤泊坞窗群组节点？ [英] How do I filter docker swarm nodes by label?

问题描述

我正在运行docker 1.12.1，不能通过标签获得节点过滤。
我首先添加test标签：

  $ docker node update --label-add test mr-host 
 mr-host 
  

当我尝试过滤时，不显示任何节点： / p>

  $ docker node ls --filter label = test 
 ID HOSTNAME状态可用性管理器状态
  

通过其他条件进行过滤，如名称正常工作：

  $ docker node ls --filter name = mr-host 
 ID HOSTNAME状态可用性管理器状态
 1c48m4msidbqwx7vj0lwib8ef * mr-host准备主动负责人
  

当我检查节点时，会显示标签：

  $ docker node inspect mr-host 
 [
 {
ID：1c48m4msidbqwx7vj0lwib8ef，
版本：{
索引：4865874 
}，
CreatedAt：2016-10-12T15：20：10.463286132Z，
UpdatedAt： 
$ {
test：
，
 角色：经理，
可用性：活动
}，
描述：{
主机名：mr-host，
Platform：{
Architecture：x86_64，
OS：linux
}，
资源：{
 NanoCPUs：10000000000 
MemoryBytes：67548012544 
}，
引擎：{
EngineVersion：1.12.1，
插件 ：[
 {
Type：Network，
Name：bridge
}，
 {
Type网络，
名称：主机
}，
 {
Type：Network，
Name：null
}，
 {
Type：Network，
名称：覆盖
}，
 {
类型：卷，
名称：本地
} 
 
} 
}，
状态：{
状态：准备
}，
ManagerStatus：{
Leader：true，
Reachability：reachable，
Addr：192.168.0.118:2377
} 
} 
] 
  

我做错了什么？我确信我已经正确地遵循了这些文档： https：/ /docs.docker.com/engine/reference/commandline/node_ls/#/id

解决方案

简单的答案：这不像你以为会这样做，但它似乎可能会解决它。

从 Github问题：

混乱来自我们有两组标签：

节点标签（通过码头节点更新设置的标签）
引擎标签当您使用
--label启动docker守护程序时，您设置）在docker节点ls中的标签过滤正在查看引擎标签，而不是节点标签。

我们应该还原到节点标签过滤，而不是引擎
过滤

I'm running docker 1.12.1 and can't get node filtering by label to work. I first add the "test" label:

$ docker node update --label-add test mr-host
mr-host

When I attempt to filter by it, no nodes are shown:

$ docker node ls --filter label=test
ID  HOSTNAME  STATUS  AVAILABILITY  MANAGER STATUS

Filtering by other criteria such as name works fine:

$ docker node ls --filter name=mr-host
ID                           HOSTNAME  STATUS  AVAILABILITY  MANAGER STATUS
1c48m4msidbqwx7vj0lwib8ef *  mr-host   Ready   Active        Leader

The label is shown when I inspect the node:

$ docker node inspect mr-host
[
    {
        "ID": "1c48m4msidbqwx7vj0lwib8ef",
        "Version": {
            "Index": 4865874
        },
        "CreatedAt": "2016-10-12T15:20:10.463286132Z",
        "UpdatedAt": "2016-10-13T16:29:03.113522485Z",
        "Spec": {
            "Labels": {
                "test": ""
            },
            "Role": "manager",
            "Availability": "active"
        },
        "Description": {
            "Hostname": "mr-host",
            "Platform": {
                "Architecture": "x86_64",
                "OS": "linux"
            },
            "Resources": {
                "NanoCPUs": 10000000000,
                "MemoryBytes": 67548012544
            },
            "Engine": {
                "EngineVersion": "1.12.1",
                "Plugins": [
                    {
                        "Type": "Network",
                        "Name": "bridge"
                    },
                    {
                        "Type": "Network",
                        "Name": "host"
                    },
                    {
                        "Type": "Network",
                        "Name": "null"
                    },
                    {
                        "Type": "Network",
                        "Name": "overlay"
                    },
                    {
                        "Type": "Volume",
                        "Name": "local"
                    }
                ]
            }
        },
        "Status": {
            "State": "ready"
        },
        "ManagerStatus": {
            "Leader": true,
            "Reachability": "reachable",
            "Addr": "192.168.0.118:2377"
        }
    }
]

What am I doing wrong? I'm pretty sure I've followed the documentation here correctly: https://docs.docker.com/engine/reference/commandline/node_ls/#/id

解决方案

Simple answer: this doesn't work like you'd think it would, but it looks like they might fix it.

Quoting from the Github issue:

The confusion comes from the fact that we have two set of labels:

Node labels (the ones you've been setting through docker node update) Engine labels (the ones that you set when you start docker daemon with --label) Label filtering in docker node ls is looking at engine labels rather than node labels.

We should probably revert to node label filtering rather than engine filtering

这篇关于如何通过标签过滤泊坞窗群组节点？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！