Networking :: Netstat Shows Multiple Identical Instances Of Connection
Jan 4, 2010
We are running a combination of Apache-2 with mod_jk connecting to tomcat workers running on separate hardware.Strange: "netstat -tn" on the Apache server outputs identical combinations of source address, source port, destination address and destination port.
Has anybody else experienced this phenomenon? (I googled and searched LQ but couldn't find anybody else reporting this)Is netstat broken, or is there another explanation?
I've been experiencing some home web-server slowdown issues lately, and I wanted to see if it's a problem with the server itself. I'm not sure if this might be the problem, but upon checking netstat -tn, I see over 15 instances of the following:
[Code]...
where 192.168.2.9 is the server's local address, the local address port varies, and the foreign address is the server's web address. If anyone knows what might be causing this and/or how to fix i
I have just installed ubuntu 10 on a thinkpad t410. At first everything worked swimmingly, INCLUDING the wireless. After about five minutes, the wireless stopped working, in that it seemed to think it was still connected but pinging didn't work. I've now restarted several times, and each time I restart, the wireless works for about 1 minute, then stops working. If I try to disconnect and reconnect it will not reconnect (until I restart, that is).
iwconfig shows the correct ESSID and ifconfig shows an address, and "connection information" shows a varying percentage of connection.
Suppose I have a server, foo, that runs on port 5555. I can make one connection to it at a time on that port. I want xinetd to fork new instances of foo so multiple clients can connect to it.
Here's a configuration entry:
1) How does xinetd fork a new instance of foo when a previous instance is already listening on port 5555? Wouldn't the new process fail to launch because port 5555 is already in use by the previous process?
2) Suppose five clients connect simultaneously, and xinetd forks five instances of foo. When the clients disconnect, does xinetd leave all five instances running?
had some problems with setting up Linux on my virtual machine as I cannot connect with putty (connection gets refused) to it but now I guess I figured my problem out, just not the way how to solve it .If I do netstat -nap | grep :22 I get the following output:[[ see attachment ]]
Shouldn`t there be some kind of LAN IP instead of 0.0.0.0?Does anyone have a possible solution for that? Checked iptables and such, they are not causing it.
At work, I have a laptop configured with CentOS 5.5 that we will be using to run latency tests on two different mobile networks. To do so, we have two Novatel USB HSPA+ wireless modems connected, and configured using wvdial. The problem we are having right now is, wvdial is configured using the path to the modem to connect (/dev/ttyUSB0 for Network#1 and ttyUSB5 for Network#2), which only works if we insert the modems in the right order. I've tried alot of udev rules and what not to try and hard code the device names to something like /dev/modem_network1 and /dev/modem_network2, but that doesn't seem to work.
So at this point I'm trying to take a step back and a fresh look at the problem. Can anyone give me any information regarding where I should begin to get this done?
I have multiple hard drives with videos on them and i can only get the my xbox to read the 1st in my list of directories. So i wanted to know can i run multiple instances of ushare and use one for each hard drive? Is it possible?
In windows xp, i created another user account. Now i can run a second instance of any program by right clicking on it and selecting Run as. Is such a thing possible in linux (centos or ubuntu) in graphical environment ?
It is possible to run multiple instances of a jar executable. Is it possible that only a single instance of the jar runs? Wrappers like JSmooth or Launch4J can be made to run as a single instance. But since there are no such wrappers for linux, I need a way to restrict the jar to a single instance. How to embed the jar file into an executable such it runs a single instance?
I am setting up 4 laptops that are all the same make and model with 64bit squeeze.What is the best way to setup the master laptop? LVM?
Once the master is all configured how we need, what is the best way to clone it to the other laptops? Once all the laptops are cloned what is the best way to refresh or update the other laptops from the master laptop?
i'm new to linux, and i want to create mumble servers for my friends.My first server is finished and he works but, is it possible to create multiples instances of mumble ?
I've got two sound cards fitted, before I've always killed pulseaudio as a pain in the butt.
Without pulseaudio enabled I could run two audio apps simultaneously, ie run a SDR ( software defined radio) app , and listen to music or watch TV at the same time.
However, with puls audio running, you can only run one, either input to either output. So can a second instance of pulseaudio be run, master and slave perhaps ?
How can I have multiple independent instances of Mozilla Firefox 3.5 on the same X server, but started from different user accounts (consequently, different profiles)?
Limited success was only with Xephyr :1, DISPLAY=:1 /usr/local/bin/firefox, but Xephyr has no Cygwin/X's "rootless" mode so it's not comfortable (see other question).
The idea is to have one Firefox instance for various "Serious Business" things and the other for regular browsing with dozens of add-ons securely isolated.
On Windows If I run Firefox as user jack, and then try to start another instance of firefox I will be unable to, as one is already running.If I choose to run firefox as administrator,then I can have two instances of firefox, separate from each other side by side, because they are under different user accounts.This does not seem to be true on Linux.As user jack if I start firefox, like on windows I am unable to start a new instance.If I open a terminal and change to root, set XAUTHORITY to jacks .Xauthority and try to start firefox as root....I get the error that firefox is already running.
The great clock applet shows tasks and appointments from the evolution calendar. That's a great and fast overview of my agenda. But clicking a task of appointment opens a new instance from evolution every time, which is enormously annoying and really destroying productivity. I don't want 15 calendars open, I want the applet to behave like an index. So it should reuse the open instance and bring focus to the clicked appointment or task. How do I disable multiple instances of evolution?
I have a test server on which I'd like to run up to 30 separate instances of a program as daemons, each running on a different IP address bound to the server. I've created a init script that takes an additional command line parameter - the last octet of the IP address. For example:
Code:
sudo myprog 40 start sudo myprog 41 start
This would run instances of the program on IP addresses 192.168.1.40 and 192.168.1.41 respectively. But it's looking like this approach isn't doable if I wish to have any or all of these run at startup, as the links in the rcN.d directories can only link to the init script, not pass a parameter.
I tried the google and browsing the known bugs in the sticky before posting this thread.On boot the machine is pegged at 100%. It is a dual-core with 4GB of ram and is running 10.04, 64bit. Also, as time goes on it eats up all the ram till theres maybe 32mb free. What happens is there are multiple 4-10+ identical processes running. seem to be gnome related.The machine sits idle on my floor and runs samba and apache/mysql/gallery for my test website that no on but myself visits.
I have enabled netbook-launcher-efl and like the interface quite a lot, but it only allows me to launch a single instance of each application. I was told in an unrelated thread that there should be a setting in gconf-editor that enables multiple instances to be launched, but I thought it would be more appropriate if I broke that out into a separate thread.
Using more than one instance of the same app is a real pita in Unity.If I have 3 (or more) pdf documents open in evince then there isn't a way to shift from one to the other using the mouse. Previously I had the windows on the taskbar and could click on the one I wanted. In Unity clicking on the evince icon on the launcher just brings ALL the instances of evince to the top - I still then have to shuffle the windows around to get the one I want.I've been trying to get used to Unity over the last few days, so maybe I am just doing it wrong, but if not then maybe I should file a bug report?
I am running a script that can run as many as 10 simultaneous times. During my testing, i noticed that if the script starts while another is in process, it inherits the $1 variable, which is always different.For example, the script starts with "scripthere.sh entry1", anther one starts almsot at the same time "scripthere.sh entry2". As the script is running, the second instance inherits $1 from the first script. So instead of $1 entry2, it shows up as entry1. how I can store $1 so that its unique to that instance of the script only?
I have a line of text with multiple web links in the line. I'd like to replace the actual links with the text "<web-link>" so I don't accidentally hit them while reading on my iphone. I've tried many versions of the following sed command, sed 's/(http.*)/<web_link>/g', but it simply replaces everything between the first instance of "(http" and the last instance of ")" with <web_link>, or does nothing at all.
Ex: This line has a link to a web page (http://www.webpage.com/file.html) then some more text (extra text) and then another link (http://www.nextwebpage.com.index.html) to a website. $ echo "This line has a link to a web page (http://www.webpage.com/file.html) then some more text (extra text) and then another link (http://www.nextwebpage.com.index.html) to a website." | sed 's/(http.*)/<web_link>/g'
What I get is: This line has a link to a web page <web_link> to a website. What I'd like is: This line has a link to a web page <web_link> then some more text (extra text) and then another link <web_link> to a website. What am I doing wrong with my sed command?
I need to run multiple squid instances on my server , I am running squid version squid-2.7.STABLE5-1.el4 on RHEL 4.7 , kindly tell me how to do so. by the way , I need to run two instance because i need to configure my proxy to act as a reverse proxy and a forward proxy, and people told me that you cannot run a forward and reverse proxy on the same instance.
I know that bash can suspend and resume processes, but I am interested in forking and resuming them from different bash instances. So, for example, forking a gui app started from the console so that it will not crash when the terminal is closed. I currently know about screen, which can work, but I was wondering if there was a way similar to Ctrl+Z, bg and fg.
I need to run two instances (i.e run the program twice, with two separate windows) of Audacious. This is for a play where I need to have music and sound effects going at the same time. I could do this while running Fedora 13, but after upgrading to 14 the audacious package was updated and now can't do this. My attempts at downgrading have been unsuccessful, and I need the audio done by tonight (the last rehearsal). So... am I up the river without a boat, or is there a fast solution? I'm open to anything, as long as the music player has advanced controls (play, pause, stop, fast forward, rewind, forwards track, backwards track) and can have two instances running at the same time.
:0 local /usr/X11R6/bin/X -nobanner :1 local /usr/X11R6/bin/X
I need to add "-nolisten tcp" to both of these lines and cannot figure out how to do it. I can get it to do the first one, but not the 2nd and so on. How do I search the file and loop though it to change them all?
When my laptop boots it successfully mounts the NFS NAS and I get an icon "My NAS" on my dekstop that points to the NAS. If I double click on the icon it opens my file browser and I can browse thru my NAS fodlers.
What I see on the left hand side of the file browser is that I have to entries for My NAS. One of it has a button to shows that it is mounted and the other does not.
If I go to Places I also see 2 entries for "My NAS". One of it takes me to browsing the NAS and if I click on the other it says "Unable to mount ... busy or already mounted". Which makes sense.
