我希望我的docker0和所有容器具有相同的网关地址，或者与我的本地计算机位于相同的IP范围内。我开始在ther daemon.json文件/etc/docker/daemon.json
{
"bip": "10.80.44.248/24",
"fixed-cidr": "10.80.44.250/25",
"mtu": 1500,
"default-gateway": "10.80.44.254",
"dns": ["10.80.41.14"]
}
似乎正在查看ip -a的输出
看来docker0从未收到过任何数据。
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet *10.80.44.248* netmask 255.255.255.0 broadcast *10.80.44.255*
ether 02:42:9c:b9:e1:63 txqueuelen 0 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens192: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet *10.80.44.39* netmask 255.255.255.0 broadcast *10.80.44.255*
inet6 fe80::250:56ff:feb1:79e4 prefixlen 64 scopeid 0x20<link>
ether 00:50:56:b1:79:e4 txqueuelen 1000 (Ethernet)
RX packets 211061 bytes 30426474 (29.0 MiB)
RX errors 0 dropped 33861 overruns 0 frame 0
TX packets 3032 bytes 260143 (254.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
本地计算机和docker0在相同的IP范围内具有相同的网关。好。 但是当我启动docker容器并检查桥接设置时，一切都不同了。这是
的输出docker network inspect bridge
[
{
"Name": "bridge",
"Id": "b326a37a589245449e1268bbb9ee65262eb7986574c0e972c56d350aa82d7238",
"Created": "2018-04-04T03:25:52.00544539+02:00",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "10.80.44.248/24",
"IPRange": "10.80.44.128/25",
"Gateway": "10.80.44.248",
"AuxiliaryAddresses": {
"DefaultGatewayIPv4": "10.80.44.254"
}
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {},
"Options": {
"com.docker.network.bridge.default_bridge": "true",
"com.docker.network.bridge.enable_icc": "true",
"com.docker.network.bridge.enable_ip_masquerade": "true",
"com.docker.network.bridge.host_binding_ipv4": "0.0.0.0",
"com.docker.network.bridge.name": "docker0",
"com.docker.network.driver.mtu": "1500"
},
"Labels": {}
}
]
我不明白为什么现在IPAM配置有IPv4 als辅助
＆＃34; AuxiliaryAddresses＆＃34;：{ ＆＃34; DefaultGatewayIPv4＆＃34;：＆＃34; 10.80.44.254＆＃34; }
我意识到现在桥不是由daemon配置的同一子网创建的，我创建了2个具有不同IP范围的不同网桥。这仍然是docker的默认设置。
docker network ls
NETWORK ID NAME DRIVER SCOPE
b326a37a5892 bridge bridge local
6ce11066cdea dockergitlab_default bridge local
d5a36c04b809 host host local
15f66b88ee67 none null local
docker network inspect dockergitlab_default
[
{
"Name": "dockergitlab_default",
"Id": "6ce11066cdeabf3cfe65b2dff22046bd1e9c18d2588f47b9cd3c52ea24f7a636",
"Created": "2018-03-14T08:56:23.351051727+01:00",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "172.17.0.0/16",
"Gateway": "172.17.0.1"
}
]
},
"Internal": false,
"Attachable": true,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"60f769c91cff1de47794a7c8b587b778488883da094ae32cfde5196ee0f528f1": {
"Name": "gitlab-runner",
"EndpointID": "5122fe862537fb8434a484b4797153274b945e20bc3c7223efc6fd0bd55eae14",
"MacAddress": "02:42:ac:11:00:04",
"IPv4Address": "172.17.0.4/16",
"IPv6Address": ""
},
"9c46e1fde6390142bddf67270cfeda7b3e68b1a6e68cabc334046db687240a8d": {
"Name": "dockergitlab_postgresql_1",
"EndpointID": "8488b32cc34a2c92308528de74b5eddcecac12a402ee6e67c1ef0f2750b72721",
"MacAddress": "02:42:ac:11:00:03",
"IPv4Address": "172.17.0.3/16",
"IPv6Address": ""
},
"eaf29f5f405cbf9bdd918efad26ceae1a8c3f58f4bef0aa8fd86b4631bcfdf43": {
"Name": "dockergitlab_gitlab_1",
"EndpointID": "d7f78ee9bd51dd13826d7834470d03a9084fc7ab8c6567c0181acecc221628c6",
"MacAddress": "02:42:ac:11:00:02",
"IPv4Address": "172.17.0.2/16",
"IPv6Address": ""
},
"f460687ec00eff214fa08adfe9a0af5b85c392ceb470c4ed630ef7ecb0bfcba1": {
"Name": "dockergitlab_redis_1",
"EndpointID": "8b18906f1c79a5faaadd32afdef20473f9b635e9a1cd2c7108dd98df48eaed86",
"MacAddress": "02:42:ac:11:00:05",
"IPv4Address": "172.17.0.5/16",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {
"com.docker.compose.network": "default",
"com.docker.compose.project": "dockergitlab"
}
}
]
我不知道为什么现在使用旧的默认IP地址创建了docker bridge。
本地系统详情
我可以在本地机器上执行apt update但是当我登录gitlab-runner时我无法apt update
Linux 4.9.0-6-amd64 #1 SMP Debian 4.9.82-1+deb9u3 (2018-03-02) x86_64
Docker version 17.12.0-ce, build c97c6d6
docker-compose version 1.18.0, build 8dd22a9
有没有办法可以设置桥接设置。根据我的阅读，当我在daemon.json文件中定义/配置cdir和gateway时，将从那里获取所有内容以创建桥接网络和所有其他容器。
先谢谢你的帮助。
答案 0 :(得分：1)
首先，您已正确配置docker0网桥，并使用普通docker run命令启动容器，应将它们连接到网桥并在10.80.44.250/25中为其提供IP。
根据您粘贴的内容，我猜您正在使用docker-compose来启动容器。
如果您未指定任何内容，
docker-compose将为每个docker-compose.yml创建一个myproject_default网络。
今天您无法选择在哪个池中选择IP范围，默认情况下为172.[17-31].0.0/16。目前有一个有效的拉取请求，允许覆盖此行为：https://github.com/moby/moby/pull/36396。
如果您想在docker-compose.yml中手动指定IP范围，可以写下：
networks:
default:
ipam:
config:
- subnet: 10.80.44.250/25
编辑：这只与docker-compose语法＆gt; = 3.0兼容。