LinuxQuestions.org
View the Most Wanted LQ Wiki articles.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices

Reply
 
Search this Thread
Old 01-17-2013, 12:36 PM   #1
mvairavan
Member
 
Registered: Feb 2011
Posts: 31

Rep: Reputation: 0
why there are 20000 connections on same port?


Hi,

In the head node of our cluster there are almost 20000 connections open on the port number 7625.
And all these are in TIME_WAIT state.

And on the port http, there are almost 10000 connections open and even all these are in TIME_WAIT state.
Why is this happening?

And when i try to ping a web address i am getting
Code:
ping: sendmsg: Operation not permitted
Is this because of the above problem ? How do i solve this?

There is no packet loss or problem if i ping from other nodes on the cluster to any other nodes apart from the headnode. So clearly the problem is with the headnode. I tried restarting it still the same problem.

How do i solve this.

Thanks in advance
 
Old 01-24-2013, 06:11 PM   #2
gilead
Senior Member
 
Registered: Dec 2005
Location: Brisbane, Australia
Distribution: Slackware64 14.0
Posts: 4,123

Rep: Reputation: 162Reputation: 162
If you mean what is the TIME_WAIT state, there is a brief description here. If you want to know what processes are listening on those ports you can do this:
Code:
fuser -n tcp 7625
fuser -n tcp 80
netstat -tunape | egrep '7625|80'
The ping not being permitted could be due to a firewall or sysctl setting - are you familiar with checking those? For example:
Code:
sysctl net.ipv4.icmp_echo_ignore_all
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
[SOLVED] what does 20000 (numerical argument) does for alternatives malayo Red Hat 1 07-07-2011 01:23 AM
Samba server did not respond after 20000 milliseconds wayno Fedora 9 12-02-2007 12:26 AM
blocking port no 20000 gadekishore Linux - Networking 2 02-19-2006 01:34 AM
mysqld running and reading for connections on port 3306, no port 3306 found from scan darkenigmaa Linux - Networking 7 09-21-2005 10:10 AM
changing xx connections on port gekkie_007 Linux - Newbie 1 10-26-2004 12:45 PM


All times are GMT -5. The time now is 07:01 AM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration