创建新容器后,是否可以运行命令从主机获取容器的IP地址?

基本上,一旦Docker创建了容器,我就想滚动我自己的代码部署和容器配置脚本。


当前回答

结合前面的答案,根据Docker图像名称查找容器ID:

docker inspect --format '{{ .NetworkSettings.IPAddress }}' `docker ps | grep $IMAGE_NAME | sed 's/\|/ /' | awk '{print $1}'`

其他回答

结合前面的答案,根据Docker图像名称查找容器ID:

docker inspect --format '{{ .NetworkSettings.IPAddress }}' `docker ps | grep $IMAGE_NAME | sed 's/\|/ /' | awk '{print $1}'`

对于窗口10:

docker inspect --format "{{ .NetworkSettings.IPAddress }}"  containerId

在Windows PowerShell中尝试:

     docker inspect -f "{{ .NetworkSettings.Networks.nat.IPAddress }}" <container id>

这是我今天用Python开发的一个解决方案,使用docker inspect容器JSON输出作为数据源。

我有很多容器和基础设施需要检查,我需要从任何容器中以快速、漂亮的方式获取基本的网络信息。这就是我写这个剧本的原因。

重要提示:从1.9版开始,Docker允许您创建多个网络并将它们连接到容器。

#!/usr/bin/python

import json
import subprocess
import sys

try:
    CONTAINER = sys.argv[1]
except Exception as e:
    print "\n\tSpecify the container name, please."
    print "\t\tEx.:  script.py my_container\n"
    sys.exit(1)

# Inspecting container via Subprocess
proc = subprocess.Popen(["docker","inspect",CONTAINER],
                      stdout=subprocess.PIPE,
                      stderr=subprocess.STDOUT)

out = proc.stdout.read()
json_data = json.loads(out)[0]

net_dict = {}
for network in json_data["NetworkSettings"]["Networks"].keys():
    net_dict['mac_addr']  = json_data["NetworkSettings"]["Networks"][network]["MacAddress"]
    net_dict['ipv4_addr'] = json_data["NetworkSettings"]["Networks"][network]["IPAddress"]
    net_dict['ipv4_net']  = json_data["NetworkSettings"]["Networks"][network]["IPPrefixLen"]
    net_dict['ipv4_gtw']  = json_data["NetworkSettings"]["Networks"][network]["Gateway"]
    net_dict['ipv6_addr'] = json_data["NetworkSettings"]["Networks"][network]["GlobalIPv6Address"]
    net_dict['ipv6_net']  = json_data["NetworkSettings"]["Networks"][network]["GlobalIPv6PrefixLen"]
    net_dict['ipv6_gtw']  = json_data["NetworkSettings"]["Networks"][network]["IPv6Gateway"]
    for item in net_dict:
        if net_dict[item] == "" or net_dict[item] == 0:
            net_dict[item] = "null"
    print "\n[%s]" % network
    print "\n{}{:>13} {:>14}".format(net_dict['mac_addr'],"IP/NETWORK","GATEWAY")
    print "--------------------------------------------"
    print "IPv4 settings:{:>16}/{:<5}  {}".format(net_dict['ipv4_addr'],net_dict['ipv4_net'],net_dict['ipv4_gtw'])
    print "IPv6 settings:{:>16}/{:<5}  {}".format(net_dict['ipv6_addr'],net_dict['ipv6_net'],net_dict['ipv6_gtw'])

输出为:

$ python docker_netinfo.py debian1

[frontend]

02:42:ac:12:00:02   IP/NETWORK        GATEWAY
--------------------------------------------
IPv4 settings:      172.18.0.2/16     172.18.0.1
IPv6 settings:            null/null   null

[backend]

02:42:ac:13:00:02   IP/NETWORK        GATEWAY
--------------------------------------------
IPv4 settings:      172.19.0.2/16     172.19.0.1
IPv6 settings:            null/null   null

我用这个简单的方法

docker exec -it <container id or name> hostname -i

e.g

ubuntu@myhost:~$ docker exec -it 3d618ac670fe hostname -i
10.0.1.5