Use:

docker inspect $CID | grep IPAddress | grep -v null| cut -d '"' -f 4 | head -1

docker inspect＜container id＞| grep-i“ipad地址”

执行：

docker ps -a

这将显示活动的docker图像：

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS                       PORTS               NAMES
3b733ae18c1c        parzee/database     "/usr/lib/postgresql/"   6 minutes ago       Up 6 minutes                 5432/tcp            serene_babbage

使用CONTAINER ID值：

docker inspect <CONTAINER ID> | grep -w "IPAddress" | awk '{ print $2 }' | head -n 1 | cut -d "," -f1

"172.17.0.2"

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

Docker inspect用于打印所有容器ip及其各自的名称

docker ps -q | xargs -n 1 docker inspect --format '{{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}} {{ .Name }}' | sed 's/ \// /'

您可以使用docker inspect＜container id＞。

例如：

CID=$(docker run -d -p 4321 base nc -lk 4321);
docker inspect $CID