Re: [squid-users] Change squid binary in flight

From: Amos Jeffries <>
Date: Fri, 21 Nov 2008 16:14:22 +1300 (NZDT)

> On Thu, Nov 20, 2008 at 7:10 PM, Lluis Ribes <> wrote:
>> Dear Squid Folks,
>> I have a Squid 3.0Stable1 running in a server. This version was
>> installed
>> with apt-get Debian package utility. So, it has worked fine until now,
>> where
>> I have file descriptor problems.
>> I saw that my installation has 1024 files as max_filedescriptor, I think
>> not
>> much. I want to change it, but the parameter max_filedescriptor in
>> squid.conf doesn't work (I receive an error message about unknown
>> parameter).
> Are you sure? It may be a runtime limitation; please check that
> there's a 'ulimit -n 8192' line in the squid startup script (replace
> 8192 with your desired limit).
>> So, I think thah the only way is recompile with file_descriptor flag:
>> ./configure --with-filedescriptors=8192 --prefix=/opt/squid
>> --with-openssl
>> --enable-ssl --disable-internal-dns --enable-async-io
>> --enable-storeio=ufs,diskd
>> Ok, I compiled Squid 3.0Stable10. So my question is:
>> Could I replace directly the binary that it was generated by my
>> compilation
>> process and located in $SQUID_SOURCE/src/squid with my debian binary
>> version
>> that it's running nowadays? I have to avoid lost of service of my web.
> the debian package may have different configure options; if you miss
> some configuration option your configuration file may be incompatible
> with your new binary.
> you may want to run 'squid -v' to check that your new configure
> options are compatible with the previous ones.
> You may also want to keep your old binary around, to be able to roll
> back in case of problems.

Indeed. There is at least one patch needed to make squid log correctly in
Debian. IIRC the packages are built with 4096 fd by default, maybe stable1
missed out for some reason.

Please try the latest package (STABLE8-1 in Debian) before a custom build
on production environments.

With the same Debian build options and patch "make install" places all
binaries in the correct places for a /etc/init.d/restart to work.

Received on Fri Nov 21 2008 - 03:14:25 MST

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