在容器根/目录中，键入
ping
并获得
bash: ping: command not found
然后我输入
yum install iputils
然后我输入
ping
我明白了
bash: /usr/bin/ping: Operation not permitted
然后我做
sudo ping
我明白了
bash: sudo: command not found
所以我输入
yum install sudo
然后我输入
sudo ping
我明白了
sudo: unable to execute /bin/ping: Operation not permitted
在这一点上，我放弃了，把手举到空中……
那么我该如何使用ping实用程序，我也想使用其他实用程序，例如hostname和ifconfig
答案 0 :(得分：1)
安装 *iputils 后，您应该设置 CAP_NET_RAW 功能：
sudo setcap cap_net_raw+p /bin/ping
凡人默认没有 CAP_NET_RAW。
答案 1 :(得分：0)
它与最新的软呢帽一起使用
$ docker run -it fedora /bin/bash
Unable to find image 'fedora:latest' locally
latest: Pulling from library/fedora
01eb078129a0: Pull complete
Digest: sha256:8ee55e140e8751492ab2cfa4513c82093cd2716df9311ea6f442f1f1259cbb3e
Status: Downloaded newer image for fedora:latest
[root@5eee4a163a0e /]# pwd
/
[root@5eee4a163a0e /]# ping
bash: ping: command not found
[root@5eee4a163a0e /]# yum install iputils
Fedora Modular 29 - x86_64 349 kB/s | 1.5 MB 00:04
Fedora Modular 29 - x86_64 - Updates 291 kB/s | 2.1 MB 00:07
Fedora 29 - x86_64 - Updates 4.3 MB/s | 25 MB 00:05
Fedora 29 - x86_64 5.0 MB/s | 62 MB 00:12
Dependencies resolved.
============================================================================================================================================================================================================
Package Architecture Version Repository Size
============================================================================================================================================================================================================
Installing:
iputils x86_64 20180629-2.fc29 fedora 130 k
Transaction Summary
============================================================================================================================================================================================================
Install 1 Package
Total download size: 130 k
Installed size: 334 k
Is this ok [y/N]: y
Downloading Packages:
iputils-20180629-2.fc29.x86_64.rpm 84 kB/s | 130 kB 00:01
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Total 45 kB/s | 130 kB 00:02
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : iputils-20180629-2.fc29.x86_64 1/1
Running scriptlet: iputils-20180629-2.fc29.x86_64 1/1
Verifying : iputils-20180629-2.fc29.x86_64 1/1
Installed:
iputils-20180629-2.fc29.x86_64
Complete!
[root@5eee4a163a0e /]# ping
Usage: ping [-aAbBdDfhLnOqrRUvV64] [-c count] [-i interval] [-I interface]
[-m mark] [-M pmtudisc_option] [-l preload] [-p pattern] [-Q tos]
[-s packetsize] [-S sndbuf] [-t ttl] [-T timestamp_option]
[-w deadline] [-W timeout] [hop1 ...] destination
Usage: ping -6 [-aAbBdDfhLnOqrRUvV] [-c count] [-i interval] [-I interface]
[-l preload] [-m mark] [-M pmtudisc_option]
[-N nodeinfo_option] [-p pattern] [-Q tclass] [-s packetsize]
[-S sndbuf] [-t ttl] [-T timestamp_option] [-w deadline]
[-W timeout] destination
[root@5eee4a163a0e /]#