Question

Squid problem: socket failure: (24) Too many open files

Asked by: sergioszy_

Proxy shows this message when hangs

ep 16 11:39:23 digitalnet squid[10739]: client_side.cc(2701) WARNING! Your cache is running out of filedescriptors
Sep 16 11:39:23 digitalnet squid[10739]: comm_open: socket failure: (24) Too many open files

-------------------------------------------------------------------------------------------------------------
digitalnet:/etc/squid # squid -v
Squid Cache: Version 3.0.STABLE10
configure options:  '--prefix=/usr' '--sysconfdir=/etc/squid' '--bindir=/usr/sbin' '--sbindir=/usr/sbin' '--localstatedir=/var' '--libexecdir=/usr/sbin' '--datadir=/usr/share/squid' '--libdir=/usr/lib' '--with-dl' '--sharedstatedir=/var/squid' '--enable-storeio=aufs,diskd,null,ufs' '--enable-disk-io=AIO,Blocking,DiskDaemon,DiskThreads' '--enable-removal-policies=heap,lru' '--enable-icmp' '--enable-delay-pools' '--enable-esi' '--enable-icap-client' '--enable-useragent-log' '--enable-referer-log' '--enable-kill-parent-hack' '--enable-snmp' '--enable-arp-acl' '--enable-htcp' '--enable-ssl' '--enable-forw-via-db' '--enable-cache-digests' '--enable-poll' '--enable-linux-netfilter' '--with-large-files' '--enable-underscores' '--enable-auth=basic,digest,ntlm,negotiate' '--enable-basic-auth-helpers=DB,LDAP,MSNT,NCSA,PAM,POP3,SASL,SMB,YP,getpwnam,multi-domain-NTLM,squid_radius_auth' '--enable-ntlm-auth-helpers=SMB,no_check,fakeauth' '--enable-negotiate-auth-helpers=squid_kerb_auth' '--enable-digest-auth-helpers=eDirectory,ldap,password' '--enable-external-acl-helpers=ip_user,ldap_group,session,unix_group,wbinfo_group' '--enable-ntlm-fail-open' '--enable-stacktraces' '--enable-x-accelerator-vary' '--with-default-user=squid' 'CFLAGS=-march=i586 -mtune=i686 -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -fPIE -fPIC -fno-strict-aliasing' 'LDFLAGS=-pie' 'CXXFLAGS=-march=i586 -mtune=i686 -fmessage-length=0 -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g -fPIC -fno-strict-aliasing'

--------------------------------------------------------------------------------------------------------------


squid is running as root

digitalnet:~ # ulimit -H
unlimited
digitalnet:~ # ulimit
unlimited

digitalnet:~ # more /proc/version
Linux version 2.6.27.21-0.1-default (geeko@buildhost) (gcc version 4.3.2 [gcc-4_3-branch revision 141291] (SUSE Linux) ) #1 SMP 2009-03-31 14:50:44 +0200
digitalnet:~ # uname -a
Linux digitalnet 2.6.27.21-0.1-default #1 SMP 2009-03-31 14:50:44 +0200 i686 i686 i386 GNU/Linux


-----------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------

This Question has been solved and asker verified All Experts Exchange premium technology solutions are available to subscription members.

Subscribe now for full access to Experts Exchange and get

Instant Access to this Solution

  • Plus...
  • 30 Day FREE access, no risk, no obligation
  • Collaborate with the world's top tech experts
  • Unlimited access to our exclusive solution database
  • Never be left without tech help again

Subscribe Now

Asked On
2009-09-17 at 07:51:42ID24740021
Tags

squid proxy

Topic

Proxy/Firewall Anti-Virus

Participating Experts
1
Points
0
Comments
5

Trusted by hundreds of thousands everyday for fast, accurate and reliable tech support.

  • "The time we save is the biggest benefit of Experts Exchange to Warner Bros. What could take multiple guys 2 hours or more each to find is accessed in around 15 minutes on Experts Exchange." Mike Kapnisakis, Warner Bros.
  • "Our team likes having a resource that is more secure than just using Google and most experts using this service really know their stuff. It's nice to look here first versus using Google." Dayna Sellner, Lockheed Martin
  • "Anytime that I've been stumped with a problem, 9 out of 10 times Experts Exchange has either the accepted solution or an open discussion of the potential solution to the problem." Kenny Red, eBay Inc.

See what Experts Exchange can do for you.

Got a question?

We've got the answer.

Experts Exchange has been collecting answers to technology questions since 1996…3 million and counting! If you have a question, chances are we already have your answer.

Screenshot of Experts Exchange Knowledgebase

Need individual assistance?

Our experts are ready to help.

If you can't find the exact answer you're looking for, ask our exclusive community of 50,000 experts. You’ll get a personalized answer from a trusted professional.

Screenshot of Experts Exchange Knowledgebase

Want to learn from the best?

Read articles from industry experts.

Thousands of free tech tips, tricks, how-to’s and tutorials are available in our peer reviewed articles section. See for yourself how smart our experts are, no login required.

Screenshot of an Article

Working on a long term project?

Store your work and research.

Save solutions to your questions, answers you’ve discovered through searching plus helpful articles in your personal knowledgebase for easy future access.

Screenshot of Experts Exchange Knowledgebase

Access the answers to your technology questions today.

Subscribe Now

30-day free trial. Register in 60 seconds.

What Makes Experts Exchange Unique?

Members of the expert community talk about why the experience at Experts Exchange is different than what you will find anywhere else.

Trusted by the world's most respected brands.

image of each brand's logo

Faithfully serving IT professionals since 1996.

Experts Exchange Logo

Try it out and discover for yourself.

Subscribe Now

30-day free trial. Register in 60 seconds.

Related Solutions

  1. Suse Linux Ldap client
    I have built a system with suse pro 9.1 and slected Ldap as authentication. The machine comes up an autheticates locally instead of through ldap. My ldap system shows up in nmap and has a Manager password ( the default one of secret ). Why is this machine not even tryi...
  2. Problem using squid_ldap_auth against AD domain
    Houston, we have a problem... I'm not sure whether anybody has seen this before; hopefully someone will be able to go "this is your problem, you silly boy!" but authentication has suddenly failed on our setup. Nothing has changed anywhere - or at least nobody is ad...
  3. Enabling Socks5 in Squid
    Would like to enable SOCKS5 support in Squid. I've read that all I need to do is add -Dbind=SOCKSbind to the compile line and -lsocks to the link line. But doing a "env CFLAGS="-g -O2 -Wall -Dbind=SOCKSbind" LIBS="-lsocks" ./configure " in the u...
  4. configuring users in squid
    Hi. I have installed Squid proxy server in my Windows 2003 server... i want to add users in the configuration file . For example, if an administrator needs to use internet, i want to configure squid to let him browse without restrictions, but if a regular user wants to brow...
  5. Squid download speed for large files
    We have a proxy here, squid 2.6 on a Mandriva box. It performs extremely well for browsing, but it turns out to be a pain in the b.tt when downloading large files. It limits somehow the bandwidth to somewhere around 40 kbs while by just bypassing squid it goes up to everythin...
  6. Squid - Where to change LDAP auth settings?
    Hi, We have an old CentOS system running squid using LDAP to authenticate to a Mac OS X 10.4 server for access out to the internet. The problem is two fold. 1. I did not configure the original proxy server and as such have no idea how it works 2. We have migrated our Mac ...

Free Tech Articles

  1. WARNING: 5 Reasons why you should NEVER fix a computer for free.
    It is in our nature to love the puzzle. We are obsessed. The lot of us. We love puzzles. We love the challenge. We thrive on finding the answer. We hate disarray. It bothers us deep in our soul. W...
  2. SCCM OSD Basic troubleshooting
    SCCM 2007 OSD is a fantastic way to deploy operating systems, however, like most things SCCM issues can sometimes be difficult to resolve due to the sheer volume of logs to sift through and the dispe...
  3. Migrate Small Business Server 2003 to Exchange 2010 and Windows 2008 R2
    This guide is intended to provide step by step instructions on how to migrate from Small Business Server 2003 to Windows 2008 R2 with Exchange 2010. For this migration to work you will need the fo...
  4. Create a Win7 Gadget
    This article shows you how to create a simple "Gadget" -- a sort of mini-application supported by Windows 7 and Vista. Gadgets can be dropped anywhere on the desktop to provide instant information, ...
  5. Outlook continually prompting for username and password
    There have been a lot of questions recently regarding Outlook prompting for a username and password whilst using Exchange 2007. There are a few reasons why this would happen and I will try to cover t...
  6. Backup Exchange 2010 Information Store using Windows Backup
    There seems to be quite a lot of confusion around the ability to backup Exchange 2010 using the built in Windows Backup feature. This stems from the omission of this feature prior to Exchange 2007 s...

Cloud Class Webinars

  1. Avoiding Bugs in Microsoft Access
    Alison Balter takes and in-depth look at avoiding bugs in Access. In this webinar you will learn about using the immediate window to debug your applications, invoking the debugger, using breakpoints to troubleshoot, stepping through code, setting the next statement to execute, ...
  2. Top 10 Best New Features in Visio 2010
    Scott Helmers gives live demonstrations of the top 10 new features in Visio 2010. This webinar will teach you how to create compelling diagrams by adding shapes to the page with a single click, linking the shapes in a diagram to data in Excel (or SQL Server, or SharePoint), ...
  3. IT Consultant Business Secrets Revealed
    Michael Munger, Experts Exchange tech pro and IT consultant, pulls back the curtain on his very successful businesses and answers question on every IT consultant and business owner should know about. He shares secrets on what he did to solve the 5 most common problems in IT, ...
  4. Disaster Recovery and Business Continuity
    Quest CTO, Mike Billon, gives an overview of the steps involved in building a dunamic disaster recovery plan. Through case studies and an examination of software/hardware tooles for monitoring and testing, you'll gain a better understandin of where you are, where you want ...
  5. Organize Your Visio Diagrams with Containers and Lists
    Scott Helmers uses cross functional flowcharts, wireframe diagrams, data graphic legends and seating charts to teach you: how to ustilize all three new structured diagram components in Visio 2010, the best practices for organizeing shapes in previous version of Visio, how to organize ...
  6. How to Us Objects, Properties, Events and Methods in Microsoft Access
    Alison Dalter gives an in-depbth look at objects, properties, events and methods in Microsoft Access. In this webinar you will learn about using the object browser, referring to objects, working with properties and methods, working with object variables, understanding the ...

Join the Community

Give a Little. Get a Lot.

Join the community of experts here and help other tech pros by answering question in your area of expertise. You can earn FREE access to all Experts Exchange's premium features and resources.

Join the Community

Answers

 

by: nabeelmoiduPosted on 2009-09-17 at 08:42:34ID: 25357444

cat /proc/sys/fs/file-max

 

by: sergioszy_Posted on 2009-09-17 at 09:39:34ID: 25358123

digitalnet:~ # cat /proc/sys/fs/file-max
36951

 

by: nabeelmoiduPosted on 2009-09-17 at 11:08:37ID: 25359139

try upping that in sysctl.conf

sysctl -a

 

by: sergioszy_Posted on 2009-09-17 at 15:27:56ID: 25361673

I assign 65536 to  var, restart squid, but still have the same problem

digitalnet:~ # sysctl fs.file-max
fs.file-max = 65536

Sep 17 20:53:06 digitalnet squid[19486]: comm_open: socket failure: (24) Too many open files
Sep 17 20:53:06 digitalnet last message repeated 3 times
Sep 17 20:53:14 digitalnet squid[19486]: ctx: enter level  0: 'http://checkurl.phishtank.com/checkurl/'
Sep 17 20:53:14 digitalnet squid[19486]: http.cc(561) HttpStateData::cacheableReply: unexpected http status code 509
Sep 17 20:53:20 digitalnet squid[19486]: ctx: exit level  0
Sep 17 20:53:20 digitalnet squid[19486]: client_side.cc(2701) WARNING! Your cache is running out of filedescriptors

 

by: sergioszy_Posted on 2009-09-18 at 15:24:15ID: 25370481

My solution come from this link

http://www.cyberciti.biz/faq/squid-proxy-server-running-out-filedescriptors/


Extracted from link:

Task: Find out current file descriptors limits

Login to your Squid proxy server and type the following command at shell prompt:
# squidclient mgr:info | grep 'file descri'
# squidclient -p {port} -u {proxy-user} -w '{proxy-password}' mgr:info | grep 'file descri'
# squidclient -p 8080 -u admin -w 'secretePassword' mgr:info | grep 'file descri'
Sample output:

        Maximum number of file descriptors:   1024
        Available number of file descriptors: 1008
        Reserved number of file descriptors:   100

Squid increase the maximum file descriptors

First, update /etc/security/limits.conf file:
# vi /etc/security/limits.conf
Append following line to increase current limit from 1024 to 4096:
* - nofile 4096
Save and close the file. You must re-login to check new limits:
# ulimit -a | grep 'open files'
Sample output:

open files                      (-n) 4096

Next you need to set the maximum number of open file descriptors by modifying squid proxy server configuration as per your Linux distribution.
Set max_filedesc under RHEL / Red Hat / CentOS / Fedora Linux

Stop the Squid as changes of this value isn't respected by reconfigure command. This value should be changed only if there isn't any active squid process.
# service squid stop
Open /etc/squid/squid.conf file
# vi /etc/squid/squid.conf
Append / add / modify max_filedesc directive:
max_filedesc 4096
Save and close the file. Start the squid proxy server:
# service squid start
Now again run squidclient command or check log files for messages:
# squidclient mgr:info
Set max_filedesc under Ubuntu / Debian Linux

First, stop squid proxy server, enter:
# /etc/init.d/squid stop
OR
$ sudo /etc/init.d/squid stop
Open /etc/default/squid to set max. number of filedescriptors to use. You can increase this on a busy
cache to a maximum of (currently) 4096 filedescriptors. Default is 1024.
$ sudo vi /etc/default/squid
OR
# vi /etc/default/squid
Now set SQUID_MAXFD:
SQUID_MAXFD=4096
Save and close the file. Start the squid proxy server:
$ sudo /etc/init.d/squid start
Verify that it is working with new limits:
# squidclient mgr:info | grep 'file descri'

20120131-EE-VQP-002

3 Ways to Join

30-Day Free Trial

The Experts

98% positive feedback on 31,087 answers since March 2000. angeliii is a Microsoft Most Valuable Professional for his work with MS SQL Server & Develoment.

He has also proven his knowledge of Visual Basic Programming, PHP Scripting and Oracle Databases.

The Experts

97% positive feedback on 10,752 answers since July 2000. lrmoore has more than 18 years experience in the networking industry.

The six-time Mircosoft MVPs specialties include firewalls, virtual private networking, and network management.

Testimonials

"...and excellent source for support... Kind of like having your very own IT dept." Electriciansnet

Testimonials

"I was apprehensive at signing up at first. However... it has already made my life as an IT administrator much easier." JaCrews

Testimonials

"WOW! You guys have great, active, and knowledgeable people on here." moore50

Business Clients

Business Clients

In the Press

"If you’ve got a question... Experts Exchange can supply an answer.”

In the Press

"...an invaluable aid for both IT professionals and those who require tech support."

In the Press

"where IT professionals provide quick answers on just about any topic"

Business Account Plans

Loading Advertisement...