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Ping multiple servers and show the result in a top like terminal UI.

Project description

CircleCI

Ping multiple servers and show the result in a top like terminal UI.

asciicast

Install

pip install pingtop

Usage

Then ping mutiple server:

pingtop baidu.com google.com twitter.com

This project is using click. Check help info with pingtop -h.

~ pingtop --help
Usage: pingtop [OPTIONS] [HOST]...

Options:
  -s, --packetsize INTEGER        specify the number of data bytes to be sent.
                                  The default is 56, which translates into 64
                                  ICMP data bytes when combined with the 8
                                  bytes of ICMP header data.  This option
                                  cannot be used with ping sweeps.  [default:
                                  56]
  -l, --logto PATH
  -v, --log-level [DEBUG|INFO|WARNING|ERROR|CRITICAL]
  --help                          Show this message and exit.

Why do I get Permission denied ?

We use ICMP socket to send ping packet without sudo (See this post by lilydjwg(in Chinese)), however, who(which group) can use this feature is controled by a kernel parameter: net.ipv4.ping_group_range.

cat /proc/sys/net/ipv4/ping_group_range

1    0

The default value is 1 0, this means the whose group number from 1 to 0 can use this feature(which means nobody can use this), so you get a Permission denied .

To fix this, change this variable to a proper range include your group id, like this:

[vagrant@centos7 pingtop]$ id
uid=1000(vagrant) gid=1000(vagrant) groups=1000(vagrant) context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023

[vagrant@centos7 pingtop]$ sudo sysctl -w net.ipv4.ping_group_range='0 1001'
net.ipv4.ping_group_range = 0 1001

Credits

  • For the credits of ping.py’s implementation please refer ping.py.
  • The UI was built on panwid thanks to @tonycpsu.
  • @gzxultra helped to solve the permission issues.

Project details


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