如何从Docker容器内部获取Docker主机的IP地址

#1 楼

/sbin/ip route|awk '/default/ { print  }'

#2 楼

MONGO_SERVER=host.docker.internal

 version: '3'

services:
  api:
    build: ./api
    volumes:
      - ./api:/usr/src/app:ro
    ports:
      - "8000"
    environment:
      - MONGO_SERVER
    command: /usr/local/bin/gunicorn -c /usr/src/app/gunicorn_config.py -w 1 -b :8000 wsgi
 

#3 楼

ipconfig getifaddr en0

sudo ifconfig lo0 alias 192.168.46.49

telnet 192.168.46.49 9000

sudo ifconfig lo0 -alias 192.168.46.49

sudo ip addr show lo

#4 楼

curl http://169.254.169.254/latest/meta-data/local-ipv4

$ docker run alpine /bin/sh -c "apk update ; apk add curl ; curl -s http://169.254.169.254/latest/meta-data/local-ipv4 ; echo"
fetch http://dl-cdn.alpinelinux.org/alpine/v3.3/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.3/community/x86_64/APKINDEX.tar.gz
v3.3.1-119-gb247c0a [http://dl-cdn.alpinelinux.org/alpine/v3.3/main]
v3.3.1-59-g48b0368 [http://dl-cdn.alpinelinux.org/alpine/v3.3/community]
OK: 5855 distinct packages available
(1/4) Installing openssl (1.0.2g-r0)
(2/4) Installing ca-certificates (20160104-r2)
(3/4) Installing libssh2 (1.6.0-r1)
(4/4) Installing curl (7.47.0-r0)
Executing busybox-1.24.1-r7.trigger
Executing ca-certificates-20160104-r2.trigger
OK: 7 MiB in 15 packages
172.31.27.238

$ ifconfig eth0 | grep -oP 'inet addr:\K\S+'
172.31.27.238

#5 楼

run --env <key>=<value>

#6 楼

docker run --add-host dockerhost:`/sbin/ip route|awk '/default/ { print  }'` [my container]

#7 楼

ifconfig

# 1. Run an ubuntu docker
# 2. Updates dependencies (quietly)
# 3. Install ip package   (quietly)
# 4. Shows (nicely) the ip of the host
# 5. Removes the docker (thanks to `--rm` arg)
docker run -it --rm ubuntu:20.10 bash -c "apt-get update > /dev/null && apt-get install iproute2 -y > /dev/null && ip -4 route show default | cut -d' ' -f3"

#8 楼

ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$//p'

docker run --rm --net host busybox /bin/sh -c \
  "ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$//p'"

getent hosts host.docker.internal | awk '{print }'

docker run --add-host host.docker.internal:host-gateway ...

curl http://169.254.169.254/latest/meta-data/local-ipv4

curl ifconfig.co

export HOST_IP=$(ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$//p')
docker run --rm -e HOST_IP busybox printenv HOST_IP

#9 楼

docker run -it --rm alpine nslookup host.docker.internal

nslookup: can't resolve '(null)': Name does not resolve

Name:      host.docker.internal
Address 1: 192.168.65.2

#10 楼

 docker run -it nginx /bin/ash

/ # nslookup host.docker.internal

Name:      host.docker.internal
Address 1: 192.168.65.2

#11 楼

#12 楼

export hostIP=$(ip r | awk '/default/{print }')
export containerID=$(awk -F/ '/docker/{print $NF;exit;}' /proc/self/cgroup)
export proxyPort=$(
  curl -s http://$hostIP:4243/containers/$containerID/json |
  node -pe 'JSON.parse(require("fs").readFileSync("/dev/stdin").toString()).NetworkSettings.Ports["DESIRED_PORT/tcp"][0].HostPort'
)

#13 楼

docker run --add-host dockerhost:`/sbin/ip route|awk '/default/ { print  }'` [image]

docker run --add-host dockerhost:`docker network inspect --format='{{range .IPAM.Config}}{{.Gateway}}{{end}}' bridge` [image]

#14 楼

wget -q -O - http://169.254.169.254/latest/meta-data/local-ipv4

#15 楼

HOST_IP=`hostname -I | awk '{print }'`

HOST_IP=`docker run busybox ping -c 1 docker.for.mac.localhost | awk 'FNR==2 {print }' | sed s'/.$//'`

#16 楼

#17 楼

docker run --rm -i --net=host alpine ifconfig

#18 楼

 const cp = require('child_process');
const ec2 = function (callback) {
    const URL = 'http://169.254.169.254/latest/meta-data/local-ipv4';
    // we make it silent and timeout to 1 sec
    const args = [URL, '-s', '--max-time', '1'];
    const opts = {};
    cp.execFile('curl', args, opts, (error, stdout) => {
        if (error) return callback(new Error('ec2 ip error'));
        else return callback(null, stdout);
    })
        .on('error', (error) => callback(new Error('ec2 ip error')));
}//ec2
 

 ec2(function(err, ip) {
        if(err) console.log(err)
        else console.log(ip);
    })
 

#19 楼

#20 楼

TAURUS_HOST=`ipconfig getifaddr en0`
docker run -it --rm -e MY_ENVIRONMENT='local' --add-host "taurus-host:${TAURUS_HOST}" ...

#21 楼

#22 楼

# docker run -d -p <external server port>:80 -v /var/run/docker.sock:/tmp/docker.sock:ro jwilder/nginx-proxy

# docker run -e VIRTUAL_HOST=<external server name/address> --detach --name ipify osixia/ipify-api:0.1.0

# curl http://<external server name/address>:<external server port>

# docker run -d -p 80:80 -v /var/run/docker.sock:/tmp/docker.sock:ro jwilder/nginx-proxy
# docker run -e VIRTUAL_HOST=ipify.example.com --detach --name ipify osixia/ipify-api:0.1.0

# curl http://ipify.example.com
10.20.30.40

#23 楼

$ hostname -i
172.17.0.2

IP=$(hostname -i)

#24 楼

  $ docker-machine ip host_name

  $ docker-machine ip host_name1 host_name2