小贝子编程

无法创建 docker 网络：在要分配给网络的默认值中找不到可用的、不重叠的 IPv4 地址池



commmand docker create network mynetwork给我以下错误响应：

Error response from daemon: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network

我已经搜索了此错误，但是这些解决方案都没有工作：

  1. 我只有3个预定的Docker网络，因此docker network prune没有区别。
  2. 我从未安装OpenVPN

这是有关我服务器环境的一些信息。OS：

LSB Version:    :core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
Distributor ID: CentOS
Description:    CentOS release 6.3 (Final)
Release:    6.3
Codename:   Final

内核：

Linux xxx.com 3.10.0_3-0-0-17 #181 SMP Thu Feb 8 16:34:08 CST 2018 x86_64 x86_64 x86_64 GNU/Linux

docker：

Client:
 Version:   18.03.0-ce
 API version:   1.37
 Go version:    go1.9.2
 Git commit:    0520e24
 Built: Wed Mar 21 23:05:52 2018
 OS/Arch:   linux/amd64
 Experimental:  false
 Orchestrator:  swarm
Server:
 Engine:
  Version:  18.03.0-ce
  API version:  1.37 (minimum version 1.12)
  Go version:   go1.9.4
  Git commit:   0520e24
  Built:    Wed Mar 21 23:14:54 2018
  OS/Arch:  linux/amd64
  Experimental: false

执行docker network create时，来自Docker守护程序的日志输出：

time="2018-04-02T14:46:15.280752033+08:00" level=debug msg="Calling POST /v1.37/networks/create"
time="2018-04-02T14:46:15.280955481+08:00" level=debug msg="form data: {"Attachable":false,"CheckDuplicate":true,"ConfigFrom":null,"ConfigOnly":false,"Driver":"bridge","EnableIPv6":false,"IPAM":{"Config":[],"Driver":"default","Options":{}},"Ingress":false,"Internal":false,"Labels":{},"Name":"abcd","Options":{},"Scope":""}"
time="2018-04-02T14:46:15.281417190+08:00" level=debug msg="Allocating IPv4 pools for network abcd (0b9717a7272a4c8782c49fa566d7e6a06704c0d085e6389e942998fbe97462a6)"
time="2018-04-02T14:46:15.281444055+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.281485165+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.281508839+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.281710387+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.281736496+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.281750737+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.281845693+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.281870666+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.281884536+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.281978263+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.282003622+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282017850+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282100720+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.282126269+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282139742+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282231487+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.282257877+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282271266+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282400372+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.282428023+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282442208+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282535390+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.282567708+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282581458+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282665177+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.282693288+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282706401+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282801403+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.282830506+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282843584+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282930538+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.282960034+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.282972907+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283059526+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.283088441+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283101529+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283189181+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.283224740+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283238227+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283332740+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.283365026+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283379846+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283460062+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.283491194+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283504728+08:00" level=debug msg="Received set for ordinal 65535, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283588953+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.283622415+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283643410+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283729518+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.283765598+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283780273+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283859445+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.283893519+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283909058+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.283993771+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.284028573+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284041138+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284128998+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.284170756+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284185810+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284263887+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.284303373+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284316600+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284397202+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.284436789+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284449960+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284526967+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.284567439+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284580543+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284662281+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.284703475+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284716169+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284794971+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.284835314+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284848272+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284926857+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.284976293+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.284996202+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285094175+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.285155415+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285171491+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285267913+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.285314698+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285327856+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285419681+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.285463945+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285476909+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285565520+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.285614270+08:00" level=debug msg="Received set for ordinal 0, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285631714+08:00" level=debug msg="Received set for ordinal 4095, start 0, end 0, any false, release false, serial:false curr:0 n"
time="2018-04-02T14:46:15.285716032+08:00" level=debug msg="RequestPool(LocalDefault, , , map[], false)"
time="2018-04-02T14:46:15.285760262+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.240.0/20)"
time="2018-04-02T14:46:15.285778212+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.224.0/20)"
time="2018-04-02T14:46:15.285790635+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.208.0/20)"
time="2018-04-02T14:46:15.285802203+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.192.0/20)"
time="2018-04-02T14:46:15.285813998+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.176.0/20)"
time="2018-04-02T14:46:15.285825543+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.160.0/20)"
time="2018-04-02T14:46:15.285836927+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.144.0/20)"
time="2018-04-02T14:46:15.285848868+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.128.0/20)"
time="2018-04-02T14:46:15.285860012+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.112.0/20)"
time="2018-04-02T14:46:15.285871053+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.80.0/20)"
time="2018-04-02T14:46:15.285882613+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.64.0/20)"
time="2018-04-02T14:46:15.285894331+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.48.0/20)"
time="2018-04-02T14:46:15.285906570+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.32.0/20)"
time="2018-04-02T14:46:15.285917790+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.16.0/20)"
time="2018-04-02T14:46:15.285930785+08:00" level=debug msg="ReleasePool(LocalDefault/192.168.0.0/20)"
time="2018-04-02T14:46:15.285942133+08:00" level=debug msg="ReleasePool(LocalDefault/172.31.0.0/16)"
time="2018-04-02T14:46:15.285953628+08:00" level=debug msg="ReleasePool(LocalDefault/172.30.0.0/16)"
time="2018-04-02T14:46:15.285965120+08:00" level=debug msg="ReleasePool(LocalDefault/172.29.0.0/16)"
time="2018-04-02T14:46:15.285975972+08:00" level=debug msg="ReleasePool(LocalDefault/172.28.0.0/16)"
time="2018-04-02T14:46:15.285986956+08:00" level=debug msg="ReleasePool(LocalDefault/172.27.0.0/16)"
time="2018-04-02T14:46:15.285997910+08:00" level=debug msg="ReleasePool(LocalDefault/172.26.0.0/16)"
time="2018-04-02T14:46:15.286015087+08:00" level=debug msg="ReleasePool(LocalDefault/172.25.0.0/16)"
time="2018-04-02T14:46:15.286026575+08:00" level=debug msg="ReleasePool(LocalDefault/172.24.0.0/16)"
time="2018-04-02T14:46:15.286037792+08:00" level=debug msg="ReleasePool(LocalDefault/172.23.0.0/16)"
time="2018-04-02T14:46:15.286049714+08:00" level=debug msg="ReleasePool(LocalDefault/172.22.0.0/16)"
time="2018-04-02T14:46:15.286063811+08:00" level=debug msg="ReleasePool(LocalDefault/172.21.0.0/16)"
time="2018-04-02T14:46:15.286076360+08:00" level=debug msg="ReleasePool(LocalDefault/172.20.0.0/16)"
time="2018-04-02T14:46:15.286087965+08:00" level=debug msg="ReleasePool(LocalDefault/172.19.0.0/16)"
time="2018-04-02T14:46:15.286099514+08:00" level=debug msg="ReleasePool(LocalDefault/172.18.0.0/16)"
time="2018-04-02T14:46:15.286110733+08:00" level=debug msg="ReleasePool(LocalDefault/172.17.0.0/16)"

感谢您的帮助！

the defaults错误的一部分是指Docker使用的31个预定地址范围，除非您在运行命令时指定--subnet选项(在这种情况下，错误将消失(：

$ docker network create abcd --subnet 172.17.0.0/16

来自Docker Deamon的日志输出表明它实际上试图分配31个默认子网中的几乎每个。分配可能失败的原因只有两个可能的原因。

名称服务器重叠

Docker如果您的DNS服务器属于该子网，则不会使用默认子网。显然，这不太可能是问题，但是我们仍然可以通过配置一些(虚拟(名称服务器来重现您的错误，每个31个默认子网中的每个：

$ cat /etc/resolv.conf
nameserver 172.17.0.1
nameserver 172.18.0.1
nameserver 172.19.0.1
nameserver 172.20.0.1
nameserver 172.21.0.1
nameserver 172.22.0.1
nameserver 172.23.0.1
nameserver 172.24.0.1
nameserver 172.25.0.1
nameserver 172.26.0.1
nameserver 172.27.0.1
nameserver 172.28.0.1
nameserver 172.29.0.1
nameserver 172.30.0.1
nameserver 172.31.0.1
nameserver 192.168.0.1
nameserver 192.168.16.1
nameserver 192.168.32.1
nameserver 192.168.48.1
nameserver 192.168.64.1
nameserver 192.168.80.1
nameserver 192.168.96.1
nameserver 192.168.112.1
nameserver 192.168.128.1
nameserver 192.168.144.1
nameserver 192.168.160.1
nameserver 192.168.176.1
nameserver 192.168.192.1
nameserver 192.168.208.1
nameserver 192.168.224.1
nameserver 192.168.240.1
$ docker network create abcd
Error response from daemon: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network

ubuntu用户阅读此内容可以使用/run/systemd/resolve/resolv.conf。

IP路由重叠

Docker官方文档指向一篇文章(UPD：CACHED页面(，该文章说

默认情况下，从范围为172的一个子网分配了一个子网。[17-31] .0.0/16或192.168。[0-256] .0/20不会与任何现有的主机接口重叠。

。

这意味着，就像使用名称服务器一样，我们可以通过添加一些(虚拟(路由将所有31个默认子网匹配到我们的路由表：

来复制您的错误。 
$ ip route add 172.16.0.0/12  dev lo
$ ip route add 192.168.0.0/16 dev lo
$ docker network create abcd
Error response from daemon: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network

求解IP路线重叠

在您的情况下，很可能需要考虑两个目的来分析ip route的输出：

  1. 查找并删除与172.[17-31].0.0/16或192.168.[0-256].0/20
    2. 冲突的不必要路由
  2. 或查找与--subnet选项一起使用的未使用的IP范围。该范围应在私人网络中10.0.0.0/8，172.16.0.0/12或192.168.0.0/16在RFC-1918中，如果您的主机已连接到Internet

其余的与OP无关，但可能对来自搜索的用户有帮助

OpenVPN

拥有选项--redirect-gateway def1设置(或从VPN服务器推开(，OpenVPN将将IP路由0.0.0.0/1和128.0.0.0/1添加到路由表中。而且由于这两个子网与任何可能的子网重叠，这将导致所讨论的错误。

可以通过使用--redirect-gateway(无标志(选项来避免使用它(如果原始选项从VPN服务器推开，则与--pull-filter ignore "redirect-gateway def1"合并(。

docker compose

这是(大概说(docker-compose.yml中的--subnet 172.17.0.0/16选项：

networks:
  default:
    ipam:
      config:
      - subnet: 172.17.0.0/16

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