MailScanner, CentOS 5 and perl-IO & perl-File-Temp

[Julian Field]

On 3/4/09 17:41, Craig White wrote:
> On Fri, 2009-04-03 at 16:51 +0100, Julian Field wrote:
>    
>> In a recent version of MailScanner, do a "./install.sh --help".
>> After a few seconds it will print this:
>>
>> Usage: ./install.sh [OPTION]... [VAR=VALUE]...
>>
>>     -h, --help            display this help and exit
>>     nodeps                ignore dependencies when installing MailScanner
>>     ignore-perl           ignore perl versions check
>>     fast                  do not wait for long during installation
>>     reinstall        force uninstallation of Perl modules before install
>>     nomodules             do not install required Perl modules
>>
>> Note the "reinstall" option.
>> What you want to do is this.
>>       ./install.sh reinstall
>> Then it will uninstall the Perl modules, at which point you "Ctrl-Z" it,
>> run your "yum update" and let your system happily upgrade. Then "fg" to
>> bring the install.sh script back to the foreground and let it complete
>> the install.
>>
>> Net result, a neatly upgraded system without having to fart around
>> manually uninstalling Perl module RPMs.
>>
>> To give you an example, this is what you will see when you run
>> "./install.sh reinstall" after the usual introductory output:
>>
>> ===START===
>> I think your system will build architecture-dependent modules for x86_64
>>
>> Deleting all the old versions of your Perl modules,
>> I will re-install them in a minute.
>>
>> Removing perl-Net-CIDR
>> Removing perl-IO-stringy
>> Removing perl-MIME-Base64
>> Removing perl-TimeDate
>> Removing perl-Pod-Escapes
>> Removing perl-Pod-Simple
>> Removing perl-Test-Simple
>> Removing perl-Test-Pod
>> Removing perl-MailTools
>> Removing perl-IO
>> Removing perl-File-Temp
>> Removing perl-HTML-Tagset
>> Removing perl-HTML-Parser
>> Removing perl-Convert-BinHex
>> Removing perl-MIME-tools
>> Removing perl-Convert-TNEF
>> Removing perl-Compress-Zlib
>> Removing perl-Archive-Zip
>> Removing perl-DBI
>> Removing perl-DBD-SQLite
>> Removing perl-Getopt-Long
>> Removing perl-Time-HiRes
>> Removing perl-Math-BigInt
>> Removing perl-Math-BigRat
>> Removing perl-bignum
>> Removing perl-Net-IP
>> Removing perl-Sys-Hostname-Long
>> Removing perl-Sys-Syslog
>> Removing perl-Digest-SHA1
>> Removing perl-Net-DNS
>> Removing perl-OLE-Storage_Lite
>>
>> If you want to upgrade your version of Perl, then now is a good time
>> to press Ctrl-Z, upgrade everything, and then continue this script
>> by running the "fg" command.
>> ===END===
>>
>> Hopefully that's all clear enough that you can see what you need to do.
>>
>>      
> ----
> ;-)
>
> Seriously Jules...I know you are light years ahead of me on all this but
> what this means is that I have to shut down MailScanner to update perl,
> which I have had to do twice this week.
You don't *have* to shut down MailScanner in order to do this. There's a 
fairly small chance it will decide to restart while you do a 
"./install.sh reinstall fast" which I think you can do.

What would you rather I do?
You can always subscribe to "MailScanner Gold" available from Fort 
Systems Ltd at www.fsl.com if you want a smoother upgrade path. It's 
pretty cheap and avoids these problems.

>   When I've got a major update
> like CentOS 5.3, that's a significant amount of downtime (though I
> suppose I can break out the perl updates separately, it just adds
> something else to the hassle factor).
>    
I don't upgrade my systems twice in a week :-)
> and it seems unnecessary to have to rebuild all of the source rpm's when
> they are already built from the last install process.
>    
But if you uninstall them then you have not got the last build, nor can 
you trust some old files which happen to be lying around.

Jules

-- 
Julian Field MEng CITP CEng
www.MailScanner.info
Buy the MailScanner book at www.MailScanner.info/store

MailScanner customisation, or any advanced system administration help?
Contact me at Jules at Jules.FM

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