063、如何使用weave网络（2019-04-03 周三）

参考https://www.cnblogs.com/CloudMan6/p/7471162.html

 

weave是Weaveworks开发的容器网络解决方案。weave创建的虚拟网络可以将部署在多个host上的容器连接起来。

 

对于容器来说，weave就像一个巨大的以太网交换机，所有容器都被接入这个交换机，容器可以直接通信，无需NAT和端口映射。

 

除此之外，weave的DNS模块使容器可以通过hostname访问

 

实验环境

 

weave不依赖分布式数据库（etcd或者consul）存储交换网络信息。每个主机上只需运行weave组件就能建立起跨host容器网络。

 

#    1、下载安装weave

 

root@host1:~# curl -L git.io/weave -o /usr/local/bin/weave

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current

                                 Dload  Upload   Total   Spent    Left  Speed

  0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0

  0     0    0     0    0     0      0      0 --:--:--  0:00:01 --:--:--     0

100   595    0   595    0     0    213      0 --:--:--  0:00:02 --:--:--  581k

100 52227  100 52227    0     0  11236      0  0:00:04  0:00:04 --:--:-- 58616

root@host1:~# chmod a+x /usr/local/bin/weave

 

#    2、运行weave

 

root@host1:~# weave launch

2.5.1: Pulling from weaveworks/weave

a073c86ecf9e: Pull complete

950f028f729b: Pull complete

d1298aa928c2: Pull complete

1d157c01c74e: Pull complete

c458f7a37ca6: Pull complete

Digest: sha256:a170dd93fa7e678cc37919ffd65601d1015da6c3f10878534ac237381ea0db19

Status: Downloaded newer image for weaveworks/weave:2.5.1

latest: Pulling from weaveworks/weavedb

9b0681f946a1: Pull complete

Digest: sha256:c280cf4e7208f4ca0d2514539e0f476dd12db70beacdc368793b7736de023d8d

Status: Downloaded newer image for weaveworks/weavedb:latest

Unable to find image 'weaveworks/weaveexec:2.5.1' locally

2.5.1: Pulling from weaveworks/weaveexec

a073c86ecf9e: Already exists

950f028f729b: Already exists

d1298aa928c2: Already exists

1d157c01c74e: Already exists

c458f7a37ca6: Already exists

49a09e96fcfc: Pull complete

6d57eb599283: Pull complete

259765bea433: Pull complete

c11f30d06b58: Pull complete

Digest: sha256:ad53aaabf648548ec26cceac3ab49394778322e1623f0d184a2b74ad06338087

Status: Downloaded newer image for weaveworks/weaveexec:2.5.1

7e8598656934a6655d16c34eeb1df238acf76692f7f5f530101ac5c722a78f43

 

#    3、查看weave运行状态，容器和网络

 

root@host1:~# docker ps -a

CONTAINER ID        IMAGE                        COMMAND                  CREATED             STATUS              PORTS               NAMES

7e8598656934        weaveworks/weave:2.5.1       "/home/weave/weaver …"   27 seconds ago      Up 26 seconds                           weave

65fab63189a6        weaveworks/weaveexec:2.5.1   "data-only"              27 seconds ago      Created                                 weavevolumes-2.5.1

a4d5d7b88819        weaveworks/weavedb:latest    "data-only"              28 seconds ago      Created                                 weavedb

 

root@host1:~# docker network ls

NETWORK ID          NAME                DRIVER              SCOPE

59984053007a        bridge              bridge              local

bb03f7574aa2        host                host                local

d60df792c936        mac_net1            macvlan             local

884e50ddfb92        mac_net10           macvlan             local

c402380a197d        mac_net20           macvlan             local

11e39328a6d1        none                null                local

e364db005326        weave               weavemesh           local

root@host1:~# docker network inspect weave

[

    {

        "Name": "weave",

        "Id": "e364db00532678e57f983e286f31ccc10a9fdb152b7b87dafcf48e7675dff3fc",

        "Created": "2019-04-03T08:35:57.945367052+08:00",

        "Scope": "local",

        "Driver": "weavemesh",

        "EnableIPv6": false,

        "IPAM": {

            "Driver": "weavemesh",

            "Options": null,

            "Config": [

                {

                    "Subnet": "10.32.0.0/12"

                }

            ]

        },

        "Internal": false,

        "Attachable": false,

        "Ingress": false,

        "ConfigFrom": {

            "Network": ""

        },

        "ConfigOnly": false,

        "Containers": {},

        "Options": {

            "works.weave.multicast": "true"

        },

        "Labels": {}

    }

]