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