Re: [squid-users] Squid-2, Squid-3, roadmap
On Mon, Mar 10, 2008, Alex Rousskov wrote: WRT responsible sponsoring: I'm willing to pay a (reasonable) premium to get the things that I pay to get into -2 into -3 as well, Thank you, and I am sure many sponsors would do the same if the trade-offs are explained to them correctly. Unfortunately, I have so far failed to convince the most prolific Squid2 developer to accept this as the default model and encourage its use. Because I'm still not 100% convinced that the Squid-3 codebase is really the way forward. I shouldn't have been the one that tried to pull some sensible direction and feedback into the development group - those working and pushing Squid-3 should've been doing that already. Unfortunately until very recently there has been almost no public dialogue that I could see. My concern is about project direction and sustainability. I chose to do my work on Squid-2 in mid to late 2006 because: (a) it was stable, so I didn't have to worry (as much) about whether bugs were due to me or pre-existing code; (b) it was in wide use by people, so incremental improvements could be adopted by existing sites without as much fear as trying to push Squid-3 as a platform; (c) I wasn't sure at the time whether there was enough momentum behind Squid-3 to justify investing time in something that may never be as prolific as -2; and I wasn't willing to invest even more of my time trying to drag the codebase forward. I shouldn't have had to try and kick Squid-3 developers along to do simple things like regression testing and local benchmarking; I shouldn't have to try and explain that the model of do whats interesting to you and what you're being paid for is such a great idea as a project direction; I shouldn't have to try and explain why an architecture and a roadmap is a great idea for a software project. I doubly shouldn't have to try and convince the Squid-3 developers considering the -past history of the whole effort-. This is why I'm not all that interested right now in doing very much in relation to Squid-3. As I said on squid-core, my opinion may change if - and I stress _if_ - changes to the project structure and direction occur which I see improving things. I don't mean improving the paid project quota on Squid-3; I mean things like improvements in direction, collaboration, documentation, testing and communication. Personally, I would love to see active sponsors together with active developers agreeing on a pragmatic migration plan towards a single Squid roadmap. I would be happy to facilitate such discussions. The active developers alone have so far failed to reach such an agreement, but I think direct Squid2 sponsor participation may help resolve the deadlock. To be honest about it, the only dissenter now is me. I'm not sure whether my continued dissent is a good idea for the project, but thus far the feedback I've received has been 100% positive. I'd like to keep kicking along Squid-2 until the point where a future Squid code tree is attractive enough to replace it. And I'm going to keep dissenting until I see the fruits of actual change, not just the discussion of it. Adrian -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA -
Re: [squid-users] Re： Re: [squid-users] centralized storage for squid
2008/3/11 Neil Harkins [EMAIL PROTECTED]: F5 has some documents on how to implement consisent hashes in bigip irules (tcl), but i wound up writing a custom one for use in front of our squids that only does one checksum per request, as opposed to one per squid in the pool, to avoid wasting cpu cycles on the LB. it uses a precomputed table for the nodes, but doesn't need to be recomputed when you add/remove a few, they just fit in between the others. i'll try to finish the writeup and submit it to devcentral soon. You're also welcome to write about this issue in the squid wiki (be it a link to devcentral or an article in the wiki itself) -- /kinkie
Re: [squid-users] Squid-2, Squid-3, roadmap
I'll come back to one of Mark's earlier points then which seems to have been lost. What will decide on adoption of -2 or -3 is the killer app. Developers roadmaps or sponsors notwithstanding. I think the point was raised that neither roadmap was especially compelling or seemed to yet contain that killer app. So momentum is on the side of -2. Users don't care if the project is recoded in C++ to make the developers life easier, the developers do, so that is not compelling in the slightest as a reason to migrate. Which I know you already realize. IMHO I still think that Mark was right that (at least one) killer app is a true multi-threaded application that can take advantage of current HW today. Now. I think that the current squid is exposed and probably vulnerable if a competing project comes out that takes full advantage of current HW and significantly outperforms todays non-scalable squid. If that happens the entire -2, -3 argument is moot. Just my $0.02 though. -mikep Adrian Chadd wrote: On Mon, Mar 10, 2008, Alex Rousskov wrote: WRT responsible sponsoring: I'm willing to pay a (reasonable) premium to get the things that I pay to get into -2 into -3 as well, Thank you, and I am sure many sponsors would do the same if the trade-offs are explained to them correctly. Unfortunately, I have so far failed to convince the most prolific Squid2 developer to accept this as the default model and encourage its use. Because I'm still not 100% convinced that the Squid-3 codebase is really the way forward. I shouldn't have been the one that tried to pull some sensible direction and feedback into the development group - those working and pushing Squid-3 should've been doing that already. Unfortunately until very recently there has been almost no public dialogue that I could see. My concern is about project direction and sustainability. I chose to do my work on Squid-2 in mid to late 2006 because: (a) it was stable, so I didn't have to worry (as much) about whether bugs were due to me or pre-existing code; (b) it was in wide use by people, so incremental improvements could be adopted by existing sites without as much fear as trying to push Squid-3 as a platform; (c) I wasn't sure at the time whether there was enough momentum behind Squid-3 to justify investing time in something that may never be as prolific as -2; and I wasn't willing to invest even more of my time trying to drag the codebase forward. I shouldn't have had to try and kick Squid-3 developers along to do simple things like regression testing and local benchmarking; I shouldn't have to try and explain that the model of do whats interesting to you and what you're being paid for is such a great idea as a project direction; I shouldn't have to try and explain why an architecture and a roadmap is a great idea for a software project. I doubly shouldn't have to try and convince the Squid-3 developers considering the -past history of the whole effort-. This is why I'm not all that interested right now in doing very much in relation to Squid-3. As I said on squid-core, my opinion may change if - and I stress _if_ - changes to the project structure and direction occur which I see improving things. I don't mean improving the paid project quota on Squid-3; I mean things like improvements in direction, collaboration, documentation, testing and communication. Personally, I would love to see active sponsors together with active developers agreeing on a pragmatic migration plan towards a single Squid roadmap. I would be happy to facilitate such discussions. The active developers alone have so far failed to reach such an agreement, but I think direct Squid2 sponsor participation may help resolve the deadlock. To be honest about it, the only dissenter now is me. I'm not sure whether my continued dissent is a good idea for the project, but thus far the feedback I've received has been 100% positive. I'd like to keep kicking along Squid-2 until the point where a future Squid code tree is attractive enough to replace it. And I'm going to keep dissenting until I see the fruits of actual change, not just the discussion of it. Adrian
Re: [squid-users] Squid-2, Squid-3, roadmap
I believe that we have to look far past the current Squid-2 and Squid-3 versions and think something much .. well, better. My initial Squid-2 roadmap proposal (which is still in the Wiki) aimed to take the codebase forward whilst beginning a modularisation project (which is in there; just read between the lines and look at what direction its heading in) with an eye towards pulling out bits of the codebase and reusing it in a next release. Squid-3 has done a little more modularisation work than Squid-2, but there's still a long way to go in either codebase to properly disentangle the dependencies and being reusing the interesting and useful parts of the Squid codebase externally. In parallel, I was planning on working on something which ties together all the current best practices from HTTP software that, quite honestly, smokes Squid in the performance arena. Varnish, Lighttpd, Nginx are three examples which smoke squid in raw performance - but lack in features and stability under given workloads. Now that I have some support customers and I'm slowly working away at their requirements, I'll hopefully start to have time to dedicate to Squid features (to keep them happy) and work on the above in my (paid) spare time. Adrian On Mon, Mar 10, 2008, Michael Puckett wrote: I'll come back to one of Mark's earlier points then which seems to have been lost. What will decide on adoption of -2 or -3 is the killer app. Developers roadmaps or sponsors notwithstanding. I think the point was raised that neither roadmap was especially compelling or seemed to yet contain that killer app. So momentum is on the side of -2. Users don't care if the project is recoded in C++ to make the developers life easier, the developers do, so that is not compelling in the slightest as a reason to migrate. Which I know you already realize. IMHO I still think that Mark was right that (at least one) killer app is a true multi-threaded application that can take advantage of current HW today. Now. I think that the current squid is exposed and probably vulnerable if a competing project comes out that takes full advantage of current HW and significantly outperforms todays non-scalable squid. If that happens the entire -2, -3 argument is moot. Just my $0.02 though. -mikep Adrian Chadd wrote: On Mon, Mar 10, 2008, Alex Rousskov wrote: WRT responsible sponsoring: I'm willing to pay a (reasonable) premium to get the things that I pay to get into -2 into -3 as well, Thank you, and I am sure many sponsors would do the same if the trade-offs are explained to them correctly. Unfortunately, I have so far failed to convince the most prolific Squid2 developer to accept this as the default model and encourage its use. Because I'm still not 100% convinced that the Squid-3 codebase is really the way forward. I shouldn't have been the one that tried to pull some sensible direction and feedback into the development group - those working and pushing Squid-3 should've been doing that already. Unfortunately until very recently there has been almost no public dialogue that I could see. My concern is about project direction and sustainability. I chose to do my work on Squid-2 in mid to late 2006 because: (a) it was stable, so I didn't have to worry (as much) about whether bugs were due to me or pre-existing code; (b) it was in wide use by people, so incremental improvements could be adopted by existing sites without as much fear as trying to push Squid-3 as a platform; (c) I wasn't sure at the time whether there was enough momentum behind Squid-3 to justify investing time in something that may never be as prolific as -2; and I wasn't willing to invest even more of my time trying to drag the codebase forward. I shouldn't have had to try and kick Squid-3 developers along to do simple things like regression testing and local benchmarking; I shouldn't have to try and explain that the model of do whats interesting to you and what you're being paid for is such a great idea as a project direction; I shouldn't have to try and explain why an architecture and a roadmap is a great idea for a software project. I doubly shouldn't have to try and convince the Squid-3 developers considering the -past history of the whole effort-. This is why I'm not all that interested right now in doing very much in relation to Squid-3. As I said on squid-core, my opinion may change if - and I stress _if_ - changes to the project structure and direction occur which I see improving things. I don't mean improving the paid project quota on Squid-3; I mean things like improvements in direction, collaboration, documentation, testing and communication. Personally, I would love to see active sponsors together with active developers agreeing on a pragmatic migration plan towards a single Squid roadmap. I would be happy
[squid-users] ACL dstdomain not working
Hello, i'm pretty new to squid. I installed it for the first time in a lab which needs to access to some specific domains through a parent proxy, using direct connection for all the requests. I setup Squid Cache: Version 2.6.STABLE16, on Fedora 8, adding those commands: cache_peer MY_PARENT_PROXY parent 3128 0 no-query proxy-only default acl ieee dstdomain .ieee.org acl acmorg dstdomain .acm.org cache_peer_access MY_PARENT_PROXY allow ieee acmorg cache_peer_access MY_PARENT_PROXY deny all But all the requests seems to go on directly, avoiding MY_PARENT_PROXY. Please note that i can setup squid to use ALWAYS MY_PARENT_PROXY, so the error isn't in the connection with the parent...AFAICS.. Thanks a lot! Luca Gervasi -- GnuPG / PGP Key Available on http://pgp.mit.edu KeyID: 0x17E179AA - Key Fingerprint: 6594 0AEB 13E9 7CA5 EBF7 FCF7 E201 1E6F 17E1 79AA Linux Registered User: #192634 Web: http://www.ashetic.net/wordpress/
Re: [squid-users] ACL dstdomain not working
Thanks for your kind answer. I tried to apply what you said in your previous message as follow: cache_peer MY_PARENT_PROXY parent 3128 0 no-query proxy-only default acl to_parent dstdomain .ieee.org .acm.org cache_peer_access MY_PARENT_PROXY allow to_parent. What i got is: MY_IP TCP_MISS/200 [...] DIRECT/140 ...parent proxy got untouched at all :( Anyone? Thanks in Advance. Luca On Tue, Mar 11, 2008 at 10:41 AM, Henrik K [EMAIL PROTECTED] wrote: On Tue, Mar 11, 2008 at 10:32:49AM +0100, Luca Gervasi wrote: Hello, i'm pretty new to squid. I installed it for the first time in a lab which needs to access to some specific domains through a parent proxy, using direct connection for all the requests. I setup Squid Cache: Version 2.6.STABLE16, on Fedora 8, adding those commands: cache_peer MY_PARENT_PROXY parent 3128 0 no-query proxy-only default acl ieee dstdomain .ieee.org acl acmorg dstdomain .acm.org cache_peer_access MY_PARENT_PROXY allow ieee acmorg cache_peer_access MY_PARENT_PROXY deny all http://wiki.squid-cache.org/SquidFaq/SquidAcl#head-af2c190759b099a7986221cd12a4066eb146a1c4 Thus: cache_peer_access MY_PARENT_PROXY allow ieee cache_peer_access MY_PARENT_PROXY allow acmorg cache_peer_access MY_PARENT_PROXY deny all Or more simply: acl to_parent dstdomain .ieee.org .acm.org cache_peer_access MY_PARENT_PROXY allow to_parent cache_peer_access MY_PARENT_PROXY deny all -- GnuPG / PGP Key Available on http://pgp.mit.edu KeyID: 0x17E179AA - Key Fingerprint: 6594 0AEB 13E9 7CA5 EBF7 FCF7 E201 1E6F 17E1 79AA Linux Registered User: #192634 Web: http://www.ashetic.net/wordpress/
Re: [squid-users] Squid-2, Squid-3, roadmap
On Tue, 2008-03-11 at 15:19 +0900, Adrian Chadd wrote: I shouldn't have been the one that tried to pull some sensible direction and feedback into the development group ... I shouldn't have had to try and kick Squid-3 developers along to do simple things like regression testing and local benchmarking; I shouldn't have to try and explain that the model of do whats interesting to you and what you're being paid for is such a great idea as a project direction; I shouldn't have to try and explain why an architecture and a roadmap is a great idea for a software project. Thank you, Adrian, for being the only beacon of reason and knowledge among the developers. It horrifies me to even think about how many obvious things we would have not known without your continuing efforts to enlighten us. Anything good that comes out of the Squid project is the direct result of your guidance and advice. I'm not sure whether my continued dissent is a good idea for the project, but thus far the feedback I've received has been 100% positive. You are obviously doing the right thing. I am really glad you receive 100% positive feedback, it is such a rare thing for dissidents to experience. Thank you, Alex.
Re: [squid-users] what's near hits?
A near hit is a validated cache miss - the object was stale, but squid did a Get with If-Modified-Since to the origin and received a 304 Not Modified, which resets the refresh timer on the object. You'll see these as TCP_REFRESH_HIT in the access log. -C On Mar 10, 2008, at 12:18 AM, J. Peng wrote: this is the info from my squidclient's output. Median Service Times (seconds) 5 min60 min: HTTP Requests (All): 0.0 0.0 Cache Misses: 0.02592 0.02592 Cache Hits:0.0 0.0 Near Hits: 0.03622 0.05331 Not-Modified Replies: 0.0 0.0 DNS Lookups: 0.0 0.0 ICP Queries: 0.0 0.0 what's Near Hits in the info? thanks.
Re: [squid-users] Squid-2, Squid-3, roadmap
On Mon, 2008-03-10 at 22:38 -0800, Michael Puckett wrote: I'll come back to one of Mark's earlier points then which seems to have been lost. What will decide on adoption of -2 or -3 is the killer app. That point has not been lost. There are two distinct problems here: First, the killer app is Foo predictions differ and (looking back) are often wrong. Second, even if we agree what a killer app will be, we may not have the resources to implement it without more sponsorship, especially when the development is split between the two versions. Let's take scalability with CPU cores as an example (without making a statement that this is the [only] killer app for Squid). Any sane developer wants scalability. It has been on the roadmaps for years[1]. To actually implement this feature you need an agreement among developers on how to do it and the funding to do the coding. If we combine existing Squid2 and Squid3 funding streams, there is probably enough money to fund the development. I suspect developers can agree on how to implement it as long as nobody insists on a yet another rewrite of Squid code. As you can see, if there was an agreement on how to merge Squid2 and Squid3 development, the funding streams would merge as well, and improvements like SMP scalability would come out faster. Users don't care if the project is recoded in C++ to make the developers life easier, the developers do, so that is not compelling in the slightest as a reason to migrate. Which I know you already realize. Yes, but what is missing in the above argument is that you get more Squid3 developers and reduced danger of significant migration costs down the road. Users do not care about programming languages, but many care about support and sustainability of the features they want or depend on. IMHO I still think that Mark was right that (at least one) killer app is a true multi-threaded application that can take advantage of current HW today. Now. I think that the current squid is exposed and probably vulnerable if a competing project comes out that takes full advantage of current HW and significantly outperforms todays non-scalable squid. If that happens the entire -2, -3 argument is moot. Just my $0.02 though. Sure, we realize that there is (and always will be) competition. We need to focus on specific/pragmatic steps to move forward though. Currently, we are moving forward at 1/3 of the speed that would have been possible with the same resources because we split the effort and then (some of us) spend time trying to merge it back. This does not make the project more competitive. If we want to move at full speed, we need to agree on a single roadmap. Since we failed to reach that agreement among the active developers, I suggest that sponsors that want a single roadmap join and help us to resolve the deadlock. Thank you, Alex. [1] I just made that wish more explicit to avoid any misunderstanding that SMP scalability is what we want, with some rough indication of a timeline: http://wiki.squid-cache.org/Features/SmpScale Adrian Chadd wrote: On Mon, Mar 10, 2008, Alex Rousskov wrote: WRT responsible sponsoring: I'm willing to pay a (reasonable) premium to get the things that I pay to get into -2 into -3 as well, Thank you, and I am sure many sponsors would do the same if the trade-offs are explained to them correctly. Unfortunately, I have so far failed to convince the most prolific Squid2 developer to accept this as the default model and encourage its use. Because I'm still not 100% convinced that the Squid-3 codebase is really the way forward. I shouldn't have been the one that tried to pull some sensible direction and feedback into the development group - those working and pushing Squid-3 should've been doing that already. Unfortunately until very recently there has been almost no public dialogue that I could see. My concern is about project direction and sustainability. I chose to do my work on Squid-2 in mid to late 2006 because: (a) it was stable, so I didn't have to worry (as much) about whether bugs were due to me or pre-existing code; (b) it was in wide use by people, so incremental improvements could be adopted by existing sites without as much fear as trying to push Squid-3 as a platform; (c) I wasn't sure at the time whether there was enough momentum behind Squid-3 to justify investing time in something that may never be as prolific as -2; and I wasn't willing to invest even more of my time trying to drag the codebase forward. I shouldn't have had to try and kick Squid-3 developers along to do simple things like regression testing and local benchmarking; I shouldn't have to try and explain that the model of do whats interesting to you and what you're being paid for is such a great idea as a project direction; I shouldn't have to try and explain why an architecture
[squid-users] ESI choose/when statement
Hi, I have an html page with following ESI code esi:assign name=number value=100/ esi:vars This is $(number) On $(HTTP_HOST) esi:choose esi:when test=$(number)==100 And I am in when /esi:when esi:otherwise I am in Otherwise /esi:otherwise /esi:choose /esi:vars The problem that I encounter is that it does't seem to execute esi:when test=$(number)==100 statement correctly since it evaluates $(number) as a variable whose value is unknown as a result of which the othweise tag is executed. But strangely it does print the value of number variable in the statement This is $(number) On $(HTTP_HOST) correctly . What could be wrong ? Please help and thanks in advance. -plf
[squid-users] Possible Error
Hi, I am still unable to get Squid to process my acl_external_type script to run as expected. I'm getting an error in my cache.log 'ipcacheAddEntryFromHosts: Bad IP address 'localhost.localdomain'' (see log listing below) Is it possible that this is causing my script's anomalies? Kind Regards, Dave Coventry 2008/03/11 13:00:33| Starting Squid Cache version 3.0.STABLE2-20080307 for i686-pc-linux-gnu... 2008/03/11 13:00:33| Process ID 4635 2008/03/11 13:00:33| With 1024 file descriptors available 2008/03/11 13:00:33| ipcacheAddEntryFromHosts: Bad IP address 'localhost.localdomain' 2008/03/11 13:00:33| DNS Socket created at 0.0.0.0, port 32772, FD 7 2008/03/11 13:00:33| Adding nameserver 192.168.10.213 from /etc/resolv.conf 2008/03/11 13:00:33| helperOpenServers: Starting 5 'checkip' processes 2008/03/11 13:00:34| Unlinkd pipe opened on FD 17 2008/03/11 13:00:34| Swap maxSize 102400 KB, estimated 7876 objects 2008/03/11 13:00:34| Target number of buckets: 393 2008/03/11 13:00:34| Using 8192 Store buckets 2008/03/11 13:00:34| Max Mem size: 8192 KB 2008/03/11 13:00:34| Max Swap size: 102400 KB 2008/03/11 13:00:34| Version 1 of swap file with LFS support detected... 2008/03/11 13:00:34| Rebuilding storage in /usr/local/squid/var/cache (DIRTY) 2008/03/11 13:00:34| Using Least Load store dir selection 2008/03/11 13:00:34| Set Current Directory to /usr/local/squid/var/cache 2008/03/11 13:00:34| Loaded Icons. 2008/03/11 13:00:34| Accepting transparently proxied HTTP connections at 0.0.0.0, port 3128, FD 19. 2008/03/11 13:00:34| Accepting ICP messages at 0.0.0.0, port 3130, FD 20. 2008/03/11 13:00:34| HTCP Disabled. 2008/03/11 13:00:34| Ready to serve requests. 2008/03/11 13:00:34| Done reading /usr/local/squid/var/cache swaplog (201 entries) 2008/03/11 13:00:34| Finished rebuilding storage from disk. 2008/03/11 13:00:34| 201 Entries scanned 2008/03/11 13:00:34| 0 Invalid entries. 2008/03/11 13:00:34| 0 With invalid flags. 2008/03/11 13:00:34| 201 Objects loaded. 2008/03/11 13:00:34| 0 Objects expired. 2008/03/11 13:00:34| 0 Objects cancelled. 2008/03/11 13:00:34| 0 Duplicate URLs purged. 2008/03/11 13:00:34| 0 Swapfile clashes avoided. 2008/03/11 13:00:34| Took 0.14 seconds (1415.77 objects/sec). 2008/03/11 13:00:34| Beginning Validation Procedure 2008/03/11 13:00:34| Completed Validation Procedure 2008/03/11 13:00:34| Validated 427 Entries 2008/03/11 13:00:34| store_swap_size = 2252 2008/03/11 13:00:35| storeLateRelease: released 0 objects
[squid-users] Multi processors
I have compiled squid with those options below: squid -v Squid Cache: Version 2.5.STABLE12 configure options: --sysconfdir=/etc/squid --enable-storeio=aufs,coss,diskd,ufs --enable-poll --enable-delay-pools --enable-linux-netfilter --enable-htcp --enable-carp --with-pthreads --enable-underscores --enable-external --enable-arp-acl --with-maxfd=16384 --enable-async-io=50 --enable-snmp It runs in a machine with 4 Itel Xeon processors, but squid no matter how many instances i start, uses only one processor, and my other three processors stay idle. My Squid.conf is this: (I have cutted-out my acls and http_acces) http_port 8080 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin aspx \? no_cache deny QUERY # OPTIONS WHICH AFFECT THE CACHE SIZE cache_mem 3072000 KB maximum_object_size 2 KB minimum_object_size 0 KB maximum_object_size_in_memory 4 MB cache_replacement_policy lru memory_replacement_policy lru # LOGFILE PATHNAMES AND CACHE DIRECTORIES cache_dir ufs /var/spool/squid 5000 16 256 cache_access_log /var/log/squid/access.log cache_log none cache_store_log none pid_filename /var/run/squid.pid # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS ftp_list_width 32 ftp_passive on auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off # OPTIONS FOR TUNING THE CACHE refresh_pattern ^ftp: 144020% 10080 refresh_pattern ^gopher:14400% 1440 refresh_pattern . 0 20% 4320 quick_abort_pct 98 # MISCELLANEOUS append_domain .rio.rj.gov.br memory_pools_limit 50 MB log_icp_queries off snmp_port 3401 Does anyone have an idea? I have looked up in this list old mails, and have not found anything. Thanks a lot, -- Marcos Camões Bourgeaiseau - KIKO e-mail pessoal: [EMAIL PROTECTED] e-mail institucional: [EMAIL PROTECTED]
RE: [squid-users] Multi processors
Marcos, What OS are you running squid on? According to the Docs, squid cannot take advantage of an SMP kernel but there is a reference about having multiple instances of squid running, However some OS's are very specific on how they handle processes, a little more information about your setup would be helpful Saul -Original Message- From: Marcos Camões Bourgeaiseau [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 3:21 PM To: squid-users@squid-cache.org Subject: [squid-users] Multi processors I have compiled squid with those options below: squid -v Squid Cache: Version 2.5.STABLE12 configure options: --sysconfdir=/etc/squid --enable-storeio=aufs,coss,diskd,ufs --enable-poll --enable-delay-pools --enable-linux-netfilter --enable-htcp --enable-carp --with-pthreads --enable-underscores --enable-external --enable-arp-acl --with-maxfd=16384 --enable-async-io=50 --enable-snmp It runs in a machine with 4 Itel Xeon processors, but squid no matter how many instances i start, uses only one processor, and my other three processors stay idle. My Squid.conf is this: (I have cutted-out my acls and http_acces) http_port 8080 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin aspx \? no_cache deny QUERY # OPTIONS WHICH AFFECT THE CACHE SIZE cache_mem 3072000 KB maximum_object_size 2 KB minimum_object_size 0 KB maximum_object_size_in_memory 4 MB cache_replacement_policy lru memory_replacement_policy lru # LOGFILE PATHNAMES AND CACHE DIRECTORIES cache_dir ufs /var/spool/squid 5000 16 256 cache_access_log /var/log/squid/access.log cache_log none cache_store_log none pid_filename /var/run/squid.pid # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS ftp_list_width 32 ftp_passive on auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off # OPTIONS FOR TUNING THE CACHE refresh_pattern ^ftp: 144020% 10080 refresh_pattern ^gopher:14400% 1440 refresh_pattern . 0 20% 4320 quick_abort_pct 98 # MISCELLANEOUS append_domain .rio.rj.gov.br memory_pools_limit 50 MB log_icp_queries off snmp_port 3401 Does anyone have an idea? I have looked up in this list old mails, and have not found anything. Thanks a lot, -- Marcos Camões Bourgeaiseau - KIKO e-mail pessoal: [EMAIL PROTECTED] e-mail institucional: [EMAIL PROTECTED] No virus found in this incoming message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM
RE: [squid-users] ACL lists
Garry, Here are some examples I prepared for you: acl badguys src 6.0.0.0/8 acl badguys2 src 2.0.0.0/8 acl intruder src 10.10.10.16 acl workstation src 10.10.10.19 acl our_networks src 192.168.1.0/24 http_access deny badguys http_access deny badguys2 http_access deny intruder http_access allow workstation http_access allow our_networks http_access deny all Brief explanation on these ACL's: I use a general acl called badguys to prevent access from an entire network class, I.E. someone doing a DoS attack on your network from multiple IP's on the same class. Intruder: A kid with a script trying to use your squid coming from the same ip (Your question about deny a single host) The rest is self explanatory, you can call the acl's whatever you want. After an acl you must have a rule matching the ACL name, so here is where you either allow or deny access based on your ACL's, see the http_access allow or deny above. Last, but also the most important, at the end of all your ACL's put http_access deny all so you can secure your installation based on your newly created ACL's Hope it helps Saul Waizer -Original Message- From: Garry D. Chapple [mailto:[EMAIL PROTECTED] Sent: Monday, March 10, 2008 8:27 PM To: squid-users@squid-cache.org Subject: [squid-users] ACL lists Hi, I am a complete Squid newb with my first install done only yesterday, 2.6 stable(18). Can someone please help with basic ACL config for network IP's, I would like to allow my local network and restrict just one or two hosts by IP address. I have Googled a little but as there are so many ACL configurations it's difficult to know which one works! Squid is up and running well and I have an ACL to allow my local network (acl our_networks src 192.168.1.0/24) but how do I then deny access to just a single host IP? Any examples or good web sites with these kinds of examples would be much appreciated. Regards, Garry C No virus found in this incoming message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM
Re: [squid-users] Multi processors
Sorry about that. It is a Ubuntu Feisty with a re-compiled Kernel version 2.6.15.7. We just took out some harware modules. We tried some newer Kernel but we couldn't make it work with the hadware that we have here. And just for clarity: It was OK to put four or more instances running at the same time, but all of those instances keep using the same processor and only that ONE processor. It is such a waste. And we have very limited material to work here. Thanks again, saul waizer escreveu: Marcos, What OS are you running squid on? According to the Docs, squid cannot take advantage of an SMP kernel but there is a reference about having multiple instances of squid running, However some OS's are very specific on how they handle processes, a little more information about your setup would be helpful Saul -Original Message- From: Marcos Camões Bourgeaiseau [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 3:21 PM To: squid-users@squid-cache.org Subject: [squid-users] Multi processors I have compiled squid with those options below: squid -v Squid Cache: Version 2.5.STABLE12 configure options: --sysconfdir=/etc/squid --enable-storeio=aufs,coss,diskd,ufs --enable-poll --enable-delay-pools --enable-linux-netfilter --enable-htcp --enable-carp --with-pthreads --enable-underscores --enable-external --enable-arp-acl --with-maxfd=16384 --enable-async-io=50 --enable-snmp It runs in a machine with 4 Itel Xeon processors, but squid no matter how many instances i start, uses only one processor, and my other three processors stay idle. My Squid.conf is this: (I have cutted-out my acls and http_acces) http_port 8080 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin aspx \? no_cache deny QUERY # OPTIONS WHICH AFFECT THE CACHE SIZE cache_mem 3072000 KB maximum_object_size 2 KB minimum_object_size 0 KB maximum_object_size_in_memory 4 MB cache_replacement_policy lru memory_replacement_policy lru # LOGFILE PATHNAMES AND CACHE DIRECTORIES cache_dir ufs /var/spool/squid 5000 16 256 cache_access_log /var/log/squid/access.log cache_log none cache_store_log none pid_filename /var/run/squid.pid # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS ftp_list_width 32 ftp_passive on auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off # OPTIONS FOR TUNING THE CACHE refresh_pattern ^ftp: 144020% 10080 refresh_pattern ^gopher:14400% 1440 refresh_pattern . 0 20% 4320 quick_abort_pct 98 # MISCELLANEOUS append_domain .rio.rj.gov.br memory_pools_limit 50 MB log_icp_queries off snmp_port 3401 Does anyone have an idea? I have looked up in this list old mails, and have not found anything. Thanks a lot, -- Marcos Camões Bourgeaiseau - KIKO e-mail pessoal: [EMAIL PROTECTED] e-mail institucional: [EMAIL PROTECTED]
RE: [squid-users] Multi processors
Marcos, Ubuntu should work fine with an SMP kernel for squid. Just to double check, with your setup have you followed these guidelines? http://wiki.squid-cache.org/MultipleInstances one of the most important things to check is that you have different PID's for every instance of squid, see pid_filename Also, how many cpu's does that box have? Do you see squid always using the same one (I.E. CPU2) Saul W -Original Message- From: Marcos Camões Bourgeaiseau [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 4:34 PM To: saul waizer; squid-users@squid-cache.org Subject: Re: [squid-users] Multi processors Sorry about that. It is a Ubuntu Feisty with a re-compiled Kernel version 2.6.15.7. We just took out some harware modules. We tried some newer Kernel but we couldn't make it work with the hadware that we have here. And just for clarity: It was OK to put four or more instances running at the same time, but all of those instances keep using the same processor and only that ONE processor. It is such a waste. And we have very limited material to work here. Thanks again, saul waizer escreveu: Marcos, What OS are you running squid on? According to the Docs, squid cannot take advantage of an SMP kernel but there is a reference about having multiple instances of squid running, However some OS's are very specific on how they handle processes, a little more information about your setup would be helpful Saul -Original Message- From: Marcos Camões Bourgeaiseau [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 3:21 PM To: squid-users@squid-cache.org Subject: [squid-users] Multi processors I have compiled squid with those options below: squid -v Squid Cache: Version 2.5.STABLE12 configure options: --sysconfdir=/etc/squid --enable-storeio=aufs,coss,diskd,ufs --enable-poll --enable-delay-pools --enable-linux-netfilter --enable-htcp --enable-carp --with-pthreads --enable-underscores --enable-external --enable-arp-acl --with-maxfd=16384 --enable-async-io=50 --enable-snmp It runs in a machine with 4 Itel Xeon processors, but squid no matter how many instances i start, uses only one processor, and my other three processors stay idle. My Squid.conf is this: (I have cutted-out my acls and http_acces) http_port 8080 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin aspx \? no_cache deny QUERY # OPTIONS WHICH AFFECT THE CACHE SIZE cache_mem 3072000 KB maximum_object_size 2 KB minimum_object_size 0 KB maximum_object_size_in_memory 4 MB cache_replacement_policy lru memory_replacement_policy lru # LOGFILE PATHNAMES AND CACHE DIRECTORIES cache_dir ufs /var/spool/squid 5000 16 256 cache_access_log /var/log/squid/access.log cache_log none cache_store_log none pid_filename /var/run/squid.pid # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS ftp_list_width 32 ftp_passive on auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off # OPTIONS FOR TUNING THE CACHE refresh_pattern ^ftp: 144020% 10080 refresh_pattern ^gopher:14400% 1440 refresh_pattern . 0 20% 4320 quick_abort_pct 98 # MISCELLANEOUS append_domain .rio.rj.gov.br memory_pools_limit 50 MB log_icp_queries off snmp_port 3401 Does anyone have an idea? I have looked up in this list old mails, and have not found anything. Thanks a lot, -- Marcos Camões Bourgeaiseau - KIKO e-mail pessoal: [EMAIL PROTECTED] e-mail institucional: [EMAIL PROTECTED] No virus found in this incoming message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM
Re: [squid-users] Multi processors
In parts: 1-One of the most important things to check is that you have different PID's for every instance of squid, see pid_filename Sure. Otherwise you can't even start more than one process. 2-Also, how many cpu's does that box have? Do you see squid always using the same one (I.E. CPU2) Squid always use the same CPU, but others services (apache for exemple) in the same machine use all four CPUs, the Ubuntu itself uses the four CPUs. That I know, this problem only occurs with squid. More info: Each squid instance uses it own cache, have it own squid.conf file and listens in different ports. Thanks one more time, escreveu: Marcos, Ubuntu should work fine with an SMP kernel for squid. Just to double check, with your setup have you followed these guidelines? http://wiki.squid-cache.org/MultipleInstances one of the most important things to check is that you have different PID's for every instance of squid, see pid_filename Also, how many cpu's does that box have? Do you see squid always using the same one (I.E. CPU2) Saul W -Original Message- From: Marcos Camões Bourgeaiseau [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 4:34 PM To: saul waizer; squid-users@squid-cache.org Subject: Re: [squid-users] Multi processors Sorry about that. It is a Ubuntu Feisty with a re-compiled Kernel version 2.6.15.7. We just took out some harware modules. We tried some newer Kernel but we couldn't make it work with the hadware that we have here. And just for clarity: It was OK to put four or more instances running at the same time, but all of those instances keep using the same processor and only that ONE processor. It is such a waste. And we have very limited material to work here. Thanks again, saul waizer escreveu: Marcos, What OS are you running squid on? According to the Docs, squid cannot take advantage of an SMP kernel but there is a reference about having multiple instances of squid running, However some OS's are very specific on how they handle processes, a little more information about your setup would be helpful Saul -Original Message- From: Marcos Camões Bourgeaiseau [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 3:21 PM To: squid-users@squid-cache.org Subject: [squid-users] Multi processors I have compiled squid with those options below: squid -v Squid Cache: Version 2.5.STABLE12 configure options: --sysconfdir=/etc/squid --enable-storeio=aufs,coss,diskd,ufs --enable-poll --enable-delay-pools --enable-linux-netfilter --enable-htcp --enable-carp --with-pthreads --enable-underscores --enable-external --enable-arp-acl --with-maxfd=16384 --enable-async-io=50 --enable-snmp It runs in a machine with 4 Itel Xeon processors, but squid no matter how many instances i start, uses only one processor, and my other three processors stay idle. My Squid.conf is this: (I have cutted-out my acls and http_acces) http_port 8080 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin aspx \? no_cache deny QUERY # OPTIONS WHICH AFFECT THE CACHE SIZE cache_mem 3072000 KB maximum_object_size 2 KB minimum_object_size 0 KB maximum_object_size_in_memory 4 MB cache_replacement_policy lru memory_replacement_policy lru # LOGFILE PATHNAMES AND CACHE DIRECTORIES cache_dir ufs /var/spool/squid 5000 16 256 cache_access_log /var/log/squid/access.log cache_log none cache_store_log none pid_filename /var/run/squid.pid # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS ftp_list_width 32 ftp_passive on auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off # OPTIONS FOR TUNING THE CACHE refresh_pattern ^ftp: 144020% 10080 refresh_pattern ^gopher:14400% 1440 refresh_pattern . 0 20% 4320 quick_abort_pct 98 # MISCELLANEOUS append_domain .rio.rj.gov.br memory_pools_limit 50 MB log_icp_queries off snmp_port 3401 Does anyone have an idea? I have looked up in this list old mails, and have not found anything. Thanks a lot, -- Marcos Camões Bourgeaiseau - KIKO e-mail pessoal: [EMAIL PROTECTED] e-mail institucional: [EMAIL PROTECTED]
[squid-users] Troubles with SquidNT in complex environment
Dear All, I'm pretty new to Squid and have troubles running it in the following environment: * LAN with 250 users * Windows Active Directory Service (ADS) Web Security Solution consisting of * IBM Proventia Web Filter performing URL filtering * Trend Micro InterScan Web Security Suite (IWSS) performing Antivirus scanning Both products (Webfilter and AV scanner) are installed on virtual machines running under VMware ESX 3.02. Both of them have an integrated, non-caching proxy server. Starting from the user PC, we have the following proxy chain: User PC = Web Filter proxy = IWSS proxy = Internet I want to use ADS objects like usernames in the Web Filter configuration - e.g. to create a rules based on usernames instead of IP addresses. Problem: The proxy server included in Proventia Web Filter has no ADS/NTLM auth support, but can act as an ICAP server. In order to use ADS objects in the Web Filter config you need an additional, NTLM auth-capable proxy server. Since there is no such proxy server in our LAN yet, we obtained a preconfigured Squid for Windows package containing * SquidNT 2.5 Stable12 binaries * NTLM auth support I installed the Squid package on the same virtual machine where the Web Filter is installed. SquidNT acts as an ICAP client, authenticating proxy users against our AD. The Proventia Web Filter acts as an ICAP server, telling SquidNT if the authenticated user is allowed to access the requested site. So the proxy chain now looks like this: User PC = Squid proxy (ICAP client) = Web Filter (ICAP server) = IWSS proxy = Internet Unfortunately we have the following problems with SquidNT: 1. Excessive RAM consumption After starting the SquidNT service, Windows Task manager shows that squid.exe uses about 9,000 KB of RAM. A working day and many user requests later, squid.exe uses about 700,000 KB (!!) of RAM! Although the virtual machine has 1 GB of RAM assigned, Windows XP SP2 started to expand its paging file in order to satisfy the ever-increasing RAM demand of squid.exe. Monitoring Windows Task Manager, you can watch squid.exe's memory consumption counting up every 5 seconds. This means I have to restart the SquidNT service at least once a day - otherwise the paging file would fill up the harddisk completely. After restarting SquidNT, it returns back to its initial RAM footprint of about 9,000 KB, but starts to count up its memory consumption immediately. I already set memory_pools to off in squid.conf, but this freed up 1,600 KB, which is nothing compared to 700,000 KB. Since we had repeated Squid fatal errors due to insufficient ntlm_auth processes in the beginning, I have set the number of these processes to 35 (auth_param ntlm children 35). Q: Although these are separate processes, can they be the cause for Squid sucking RAM like a black hole? Is there anything else I can do against it - besides restarting the Squid service? 2. Service instabilities Occasionally, users get a message in their browser telling them that the proxy has rejected the connection. I checked the Squid server immediately after having received this message myself, but squid.exe was running as always. Obviously there are situations where Squid ceases its service for a short time, being unable to service user requests during this period. Q: What can be done to enhance reliability/stability of SquidNT? 3. Problems accessing certain websites with Internet Explorer (IE) through Squid Our users have problems accessing the following sites: a) Bank website hosting a Java-based Internet banking application (website complains about missing Java support/invalid browser configuration) b) Website running a Citrix portal delivering applications over the Web Both applications use HTTPS and work when * using the IWSS proxy, bypassing Squid; independent of browser * using the Squid proxy, but Firefox instead of IE Problem: IE is our standard browser and is installed everywhere. Q: Is there any IE setting, which has to be changed in order to make special Web applications work over Squid? Ideas and hints regarding any of these issues are appreciated. Many thanks in advance, Peter _ Der WEB.DE SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! http://smartsurfer.web.de/?mc=100071distributionid=0066
RE: [squid-users] ACL lists
Thanks Saul, It works a treat mate and thanks again for a quick response. Regards, Garry Chapple -Original Message- From: saul waizer [mailto:[EMAIL PROTECTED] Sent: Wednesday, 12 March 2008 5:24 AM To: squid-users@squid-cache.org Cc: Garry D. Chapple Subject: RE: [squid-users] ACL lists Garry, Here are some examples I prepared for you: acl badguys src 6.0.0.0/8 acl badguys2 src 2.0.0.0/8 acl intruder src 10.10.10.16 acl workstation src 10.10.10.19 acl our_networks src 192.168.1.0/24 http_access deny badguys http_access deny badguys2 http_access deny intruder http_access allow workstation http_access allow our_networks http_access deny all Brief explanation on these ACL's: I use a general acl called badguys to prevent access from an entire network class, I.E. someone doing a DoS attack on your network from multiple IP's on the same class. Intruder: A kid with a script trying to use your squid coming from the same ip (Your question about deny a single host) The rest is self explanatory, you can call the acl's whatever you want. After an acl you must have a rule matching the ACL name, so here is where you either allow or deny access based on your ACL's, see the http_access allow or deny above. Last, but also the most important, at the end of all your ACL's put http_access deny all so you can secure your installation based on your newly created ACL's Hope it helps Saul Waizer -Original Message- From: Garry D. Chapple [mailto:[EMAIL PROTECTED] Sent: Monday, March 10, 2008 8:27 PM To: squid-users@squid-cache.org Subject: [squid-users] ACL lists Hi, I am a complete Squid newb with my first install done only yesterday, 2.6 stable(18). Can someone please help with basic ACL config for network IP's, I would like to allow my local network and restrict just one or two hosts by IP address. I have Googled a little but as there are so many ACL configurations it's difficult to know which one works! Squid is up and running well and I have an ACL to allow my local network (acl our_networks src 192.168.1.0/24) but how do I then deny access to just a single host IP? Any examples or good web sites with these kinds of examples would be much appreciated. Regards, Garry C No virus found in this incoming message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.518 / Virus Database: 269.21.7/1325 - Release Date: 3/11/2008 1:41 PM
Re: [squid-users] Troubles with SquidNT in complex environment
Hi, At 22:52 11/03/2008, Peter Weichenberger wrote: Dear All, I'm pretty new to Squid and have troubles running it in the following environment: * LAN with 250 users * Windows Active Directory Service (ADS) Web Security Solution consisting of * IBM Proventia Web Filter performing URL filtering * Trend Micro InterScan Web Security Suite (IWSS) performing Antivirus scanning Both products (Webfilter and AV scanner) are installed on virtual machines running under VMware ESX 3.02. Both of them have an integrated, non-caching proxy server. Starting from the user PC, we have the following proxy chain: User PC = Web Filter proxy = IWSS proxy = Internet I want to use ADS objects like usernames in the Web Filter configuration - e.g. to create a rules based on usernames instead of IP addresses. Problem: The proxy server included in Proventia Web Filter has no ADS/NTLM auth support, but can act as an ICAP server. In order to use ADS objects in the Web Filter config you need an additional, NTLM auth-capable proxy server. Since there is no such proxy server in our LAN yet, we obtained a preconfigured Squid for Windows package containing * SquidNT 2.5 Stable12 binaries * NTLM auth support First, you should upgrade to Squid 2.6 and add also Negotiate authentication. I installed the Squid package on the same virtual machine where the Web Filter is installed. SquidNT acts as an ICAP client, authenticating proxy users against our AD. The Proventia Web Filter acts as an ICAP server, telling SquidNT if the authenticated user is allowed to access the requested site. So the proxy chain now looks like this: User PC = Squid proxy (ICAP client) = Web Filter (ICAP server) = IWSS proxy = Internet Unfortunately we have the following problems with SquidNT: 1. Excessive RAM consumption After starting the SquidNT service, Windows Task manager shows that squid.exe uses about 9,000 KB of RAM. This is a know and fixed old bug for Squid STABLE 12: http://www.squid-cache.org/bugs/show_bug.cgi?id=1522 A working day and many user requests later, squid.exe uses about 700,000 KB (!!) of RAM! Although the virtual machine has 1 GB of RAM assigned, Windows XP SP2 started to expand its paging file in order to satisfy the ever-increasing RAM demand of squid.exe. Please: use a Server OS .. Monitoring Windows Task Manager, you can watch squid.exe's memory consumption counting up every 5 seconds. This means I have to restart the SquidNT service at least once a day - otherwise the paging file would fill up the harddisk completely. After restarting SquidNT, it returns back to its initial RAM footprint of about 9,000 KB, but starts to count up its memory consumption immediately. I already set memory_pools to off in squid.conf, but this freed up 1,600 KB, which is nothing compared to 700,000 KB. Since we had repeated Squid fatal errors due to insufficient ntlm_auth processes in the beginning, I have set the number of these processes to 35 (auth_param ntlm children 35). If you are using IE7, Negotiate here could help you. Q: Although these are separate processes, can they be the cause for Squid sucking RAM like a black hole? Is there anything else I can do against it - besides restarting the Squid service? Upgrade Squid to latest 2.6. 2. Service instabilities Occasionally, users get a message in their browser telling them that the proxy has rejected the connection. I checked the Squid server immediately after having received this message myself, but squid.exe was running as always. Obviously there are situations where Squid ceases its service for a short time, being unable to service user requests during this period. Expected, because you are running on a Workstation OS: http://smallvoid.com/article/winnt-tcpip-max-limit.html Q: What can be done to enhance reliability/stability of SquidNT? Run Squid on Windows 2003 Server. 3. Problems accessing certain websites with Internet Explorer (IE) through Squid Our users have problems accessing the following sites: a) Bank website hosting a Java-based Internet banking application (website complains about missing Java support/invalid browser configuration) Latest Java VM is NTLM aware. b) Website running a Citrix portal delivering applications over the Web Not sure if there is something to do here., but there are many changes/improvement into 2.6. Both applications use HTTPS and work when * using the IWSS proxy, bypassing Squid; independent of browser * using the Squid proxy, but Firefox instead of IE Problem: IE is our standard browser and is installed everywhere. Q: Is there any IE setting, which has to be changed in order to make special Web applications work over Squid? Ideas and hints regarding any of these issues are appreciated. Again, first upgrade to latest 2.6 STABLE 18. Regards Guido - Guido Serassio Acme Consulting S.r.l. - Microsoft
Re: [squid-users] Multi processors
Sounds like you want processor affinity; http://www.linuxcommand.org/man_pages/taskset1.html Cheers, On 12/03/2008, at 8:22 AM, Marcos Camões Bourgeaiseau wrote: In parts: 1-One of the most important things to check is that you have different PID's for every instance of squid, see pid_filename Sure. Otherwise you can't even start more than one process. 2-Also, how many cpu's does that box have? Do you see squid always using the same one (I.E. CPU2) Squid always use the same CPU, but others services (apache for exemple) in the same machine use all four CPUs, the Ubuntu itself uses the four CPUs. That I know, this problem only occurs with squid. More info: Each squid instance uses it own cache, have it own squid.conf file and listens in different ports. Thanks one more time, escreveu: Marcos, Ubuntu should work fine with an SMP kernel for squid. Just to double check, with your setup have you followed these guidelines? http://wiki.squid-cache.org/MultipleInstances one of the most important things to check is that you have different PID's for every instance of squid, see pid_filename Also, how many cpu's does that box have? Do you see squid always using the same one (I.E. CPU2) Saul W -Original Message- From: Marcos Camões Bourgeaiseau [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 4:34 PM To: saul waizer; squid-users@squid-cache.org Subject: Re: [squid-users] Multi processors Sorry about that. It is a Ubuntu Feisty with a re-compiled Kernel version 2.6.15.7. We just took out some harware modules. We tried some newer Kernel but we couldn't make it work with the hadware that we have here. And just for clarity: It was OK to put four or more instances running at the same time, but all of those instances keep using the same processor and only that ONE processor. It is such a waste. And we have very limited material to work here. Thanks again, saul waizer escreveu: Marcos, What OS are you running squid on? According to the Docs, squid cannot take advantage of an SMP kernel but there is a reference about having multiple instances of squid running, However some OS's are very specific on how they handle processes, a little more information about your setup would be helpful Saul -Original Message- From: Marcos Camões Bourgeaiseau [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 11, 2008 3:21 PM To: squid-users@squid-cache.org Subject: [squid-users] Multi processors I have compiled squid with those options below: squid -v Squid Cache: Version 2.5.STABLE12 configure options: --sysconfdir=/etc/squid --enable-storeio=aufs,coss,diskd,ufs --enable-poll --enable-delay- pools --enable-linux-netfilter --enable-htcp --enable-carp --with-pthreads --enable-underscores --enable-external --enable-arp-acl --with-maxfd=16384 --enable-async-io=50 --enable-snmp It runs in a machine with 4 Itel Xeon processors, but squid no matter how many instances i start, uses only one processor, and my other three processors stay idle. My Squid.conf is this: (I have cutted-out my acls and http_acces) http_port 8080 hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin aspx \? no_cache deny QUERY # OPTIONS WHICH AFFECT THE CACHE SIZE cache_mem 3072000 KB maximum_object_size 2 KB minimum_object_size 0 KB maximum_object_size_in_memory 4 MB cache_replacement_policy lru memory_replacement_policy lru # LOGFILE PATHNAMES AND CACHE DIRECTORIES cache_dir ufs /var/spool/squid 5000 16 256 cache_access_log /var/log/squid/access.log cache_log none cache_store_log none pid_filename /var/run/squid.pid # OPTIONS FOR EXTERNAL SUPPORT PROGRAMS ftp_list_width 32 ftp_passive on auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours auth_param basic casesensitive off # OPTIONS FOR TUNING THE CACHE refresh_pattern ^ftp: 144020% 10080 refresh_pattern ^gopher:14400% 1440 refresh_pattern . 0 20% 4320 quick_abort_pct 98 # MISCELLANEOUS append_domain .rio.rj.gov.br memory_pools_limit 50 MB log_icp_queries off snmp_port 3401 Does anyone have an idea? I have looked up in this list old mails, and have not found anything. Thanks a lot, -- Marcos Camões Bourgeaiseau - KIKO e-mail pessoal: [EMAIL PROTECTED] e-mail institucional: [EMAIL PROTECTED] -- Mark Nottingham [EMAIL PROTECTED]
Re: [squid-users] Possible Error
Dave Coventry wrote: Hi, I am still unable to get Squid to process my acl_external_type script to run as expected. Not unusual for new scripts. Which script was this and what it doing? I'm getting an error in my cache.log 'ipcacheAddEntryFromHosts: Bad IP address 'localhost.localdomain'' (see log listing below) Is it possible that this is causing my script's anomalies? Depends. What does your hosts file contain? Sepcifically lines containing 'localhost' or 'localdomain'. Kind Regards, Dave Coventry 2008/03/11 13:00:33| Starting Squid Cache version 3.0.STABLE2-20080307 for i686-pc-linux-gnu... 2008/03/11 13:00:33| Process ID 4635 2008/03/11 13:00:33| With 1024 file descriptors available 2008/03/11 13:00:33| ipcacheAddEntryFromHosts: Bad IP address 'localhost.localdomain' 2008/03/11 13:00:33| DNS Socket created at 0.0.0.0, port 32772, FD 7 2008/03/11 13:00:33| Adding nameserver 192.168.10.213 from /etc/resolv.conf 2008/03/11 13:00:33| helperOpenServers: Starting 5 'checkip' processes 2008/03/11 13:00:34| Unlinkd pipe opened on FD 17 2008/03/11 13:00:34| Swap maxSize 102400 KB, estimated 7876 objects 2008/03/11 13:00:34| Target number of buckets: 393 2008/03/11 13:00:34| Using 8192 Store buckets 2008/03/11 13:00:34| Max Mem size: 8192 KB 2008/03/11 13:00:34| Max Swap size: 102400 KB 2008/03/11 13:00:34| Version 1 of swap file with LFS support detected... 2008/03/11 13:00:34| Rebuilding storage in /usr/local/squid/var/cache (DIRTY) 2008/03/11 13:00:34| Using Least Load store dir selection 2008/03/11 13:00:34| Set Current Directory to /usr/local/squid/var/cache 2008/03/11 13:00:34| Loaded Icons. 2008/03/11 13:00:34| Accepting transparently proxied HTTP connections at 0.0.0.0, port 3128, FD 19. 2008/03/11 13:00:34| Accepting ICP messages at 0.0.0.0, port 3130, FD 20. 2008/03/11 13:00:34| HTCP Disabled. 2008/03/11 13:00:34| Ready to serve requests. 2008/03/11 13:00:34| Done reading /usr/local/squid/var/cache swaplog (201 entries) 2008/03/11 13:00:34| Finished rebuilding storage from disk. 2008/03/11 13:00:34| 201 Entries scanned 2008/03/11 13:00:34| 0 Invalid entries. 2008/03/11 13:00:34| 0 With invalid flags. 2008/03/11 13:00:34| 201 Objects loaded. 2008/03/11 13:00:34| 0 Objects expired. 2008/03/11 13:00:34| 0 Objects cancelled. 2008/03/11 13:00:34| 0 Duplicate URLs purged. 2008/03/11 13:00:34| 0 Swapfile clashes avoided. 2008/03/11 13:00:34| Took 0.14 seconds (1415.77 objects/sec). 2008/03/11 13:00:34| Beginning Validation Procedure 2008/03/11 13:00:34| Completed Validation Procedure 2008/03/11 13:00:34| Validated 427 Entries 2008/03/11 13:00:34| store_swap_size = 2252 2008/03/11 13:00:35| storeLateRelease: released 0 objects Amos -- Please use Squid 2.6STABLE17+ or 3.0STABLE1+ There are serious security advisories out on all earlier releases.
Re: [squid-users] Transparent proxy. router + dedicated server
Rafal Ramocki wrote: Amos Jeffries pisze: Rafal Ramocki wrote: Amos Jeffries wrote: Hello, I have problem with my squid setup. For quite long time I've been using Squid 2.6 STABLE-17. I decidet to switch to squid 3.0 but there is problem. My configuration is: large network - nat router (linux) - router (hardware ATM) - internet \ / squid Most of traffic is nat'ed on nat router, and forwarded to border hardware atm router. HTTP traffic (port 80) is DNAT'ed to machine with squid. And that setup worked fine for now. But after switching to 3.0 I have following error message: ERROR The requested URL could not be retrieved While trying to retrieve the URL: / The following error was encountered: * Invalid URL Here are few directives from my configuration file. http_port 80 transparent icp_port 0 htcp_port 0 tcp_outgoing_address X.X.X.X dns_nameservers X.X.X.X I have been working on it for a quite long time. I have been googling but i have found information about one server setups. Even in squid faq there is only that configuration. Please help ;) What you have is in no way transparent. As long as DNAT was used never has been. That setup worked for me for something about 4 years. Transparent for me menas with no configuration in browsers. Transparent interception is done with REDIRECT (netfilter) or TPROXY-2 when squid sits on the NAT box with the full NAT tables available to it. It is not possilble in my case. My network is 3000+ nodes. Both machines are under heavy load. And i just cant place squid, filtering and traffic controll on one single machine. I also don't want to place squid after router as long as that setup is less fail proof. Using DNAT to another box isolates squid from the information it needs to work transparently, Funny is that squid never needed that information ;) but it can still be faked with an semi-open proxy config. You need the following for starters: # cope with standard web requests ... http_port 80 vhost # SECURE the access acl localnet src 10.0.0.0/8 http_access deny !localnet ** alter the ACL to contain the IP ranges you are intercepting. I've already tried that similar configuration. And I've tried once more. The reslt is: ERROR The requested URL could not be retrieved While trying to retrieve the URL: http://www.debian.org/ The following error was encountered: * Unable to forward this request at this time. This request could not be forwarded to the origin server or to any parent caches. The most likely cause for this error is that: * The cache administrator does not allow this cache to make direct connections to origin servers, and * All configured parent caches are currently unreachable. In cache.log I have: 2008/03/10 09:16:53| Failed to select source for 'http://www.debian.org/' 2008/03/10 09:16:53| always_direct = 0 2008/03/10 09:16:53|never_direct = 0 2008/03/10 09:16:53|timedout = 0 I think in that setup directives cache_peer* are mandatory. But I cant't define in that way whole internet ;) No not mandatory. The semi-open-proxy config should be lettign internal requests out in your setup. NP: broken non-HTTP-compliant client software will still get that error page, but compliant software like most browsers will get through okay. That is OK for me. I also want to ensure that by port 80 is transmited only http traffic and not for example p2p. Any ideas? Because I'm running out. :) This second problem you are now hitting (Unable to forward) shows a problem making general web requests. - check that the squid box is able to make outbound port-80 requests. (particularly without looping back through itself!) Yes it can. When i configure proxy in browser it works fine. I have similar test environment. In the same configuration when I'm redirecting it works fine, when I'm configuring browser to use squid it works fine. It doesn't work when I'm dnating from other machine. - check that the squid box can resolve the domain its fetching Squid box can resolve DNS. Squid it self should resolbe to. Configuration is the same like in squid i'm currently using (2.6 Stable 17). In which case it looks like either something else in the config blocking that request or a transport-layer problem. If you set: debug_options ALL,5 What shows up as the preceeding 150 or so cache.log lines to the Failed to select source for entry? Amos -- Please use Squid 2.6STABLE17+ or 3.0STABLE1+ There are serious security advisories out on all earlier releases.
