[Spacewalk-list] Spacewalk performance tuning for deployments with 1000+ hosts

Krzysztof Pawłowski msciciel at msciciel.eu
Fri Nov 21 05:49:33 UTC 2014 

Hello Amedeo,
Does all spacewalk proxy use the same database server or i'm wrong ?

2014-10-29 16:56 GMT+01:00 Amedeo Salvati <amedeo at oscert.net>:

>  this will scale out (not scale UP) your env, but you will change where
> your client will be connected -> to spacewalk or to spacewalk proxy
>
> Da: spacewalk-list-bounces at redhat.com
> A: spacewalk-list at redhat.com
> Cc:
> Data: Wed, 29 Oct 2014 15:49:09 +0100
> Oggetto: Re: [Spacewalk-list] Spacewalk performance tuning for
> deployments with 1000+ hosts
>
>  > Does this solve problem with web ui ?
>
> > Sent from my Windows Phone
> ------------------------------
> > From: Amedeo Salvati <amedeo at oscert.net>
> > Sent: ‎2014-‎10-‎29 12:03
> > To: spacewalk-list at redhat.com
> > Cc: spacewalk-list at redhat.com
> > Subject: Re: [Spacewalk-list]Spacewalk performance tuning for
> deployments with 1000+ hosts
>
> > repeat I think you must use rhn|spacewalk proxies
>
> > best regards
> > a
>
>
> > Da: spacewalk-list-bounces at redhat.com
> > A: spacewalk-list at redhat.com
> > Cc:
> > Data: Wed, 29 Oct 2014 07:22:30 +0100
> > Oggetto: Re: [Spacewalk-list] Spacewalk performance tuning for
> deployments with 1000+ hosts
>
>  > > Unfortunately it doesn't help :(
>
> > > When i want do sth with all 1500 systems i get :
> > > Service Temporarily Unavailable
>
> > > The server is temporarily unable to service your request due to
> maintenance downtime or capacity problems. Please try again later.
>
>
> > > 2014-10-28 17:41 GMT+01:00 Matthew Madey <mattmadey at gmail.com>:
>
>>
>> > > Here are some configurations you might find helpful for tuning Apache\Tomcat\Java\Networking..
>> Like others have mentioned.. when you get over 1000+ clients, it's a good
>> idea to start scaling horizontally with Spacewalk Proxies. We use 4 proxies
>> in our production environment and are servicing 8000+ clients. We can
>> actually patch 1600 clients at a time and the GUI is still pretty
>> responsive. Can't guarantee this will resolve your issue, but this worked
>> for us.
>>
>> > > Add maxThreads to /etc/tomcat6/server.xml
>>
>> > >
>>
>> > >     <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" redirectPort="8443" URIEncoding="UTF-8" address="127.0.0.1" maxThreads="1024" maxKeepAliveRequests="1000"/>
>>
>> > >     <!-- A "Connector" using the shared thread pool-->
>>
>> > >     <!--
>>
>> > >     <Connector executor="tomcatThreadPool"
>>
>> > >                port="8080" protocol="HTTP/1.1"
>>
>> > >                connectionTimeout="20000"
>>
>> > >                redirectPort="8443" />
>>
>> > >
>>
>> > >     <!-- Define an AJP 1.3 Connector on port 8009 -->
>>
>> > >     <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" URIEncoding="UTF-8" address="127.0.0.1" maxThreads="1024"/>
>>
>> > >
>>
>> > >     <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" URIEncoding="UTF-8" address="::1" maxThreads="1024"/>
>>
>> > >
>>
>> > >
>>
>> > > Tune Apache to service more requests /etc/httpd/conf.d/zz-spacewalk-server.conf
>>
>> > >
>>
>> > >
>>
>> > > #######################################################
>>
>> > > # Authorship and versioning info
>>
>> > > # $Author$
>>
>> > > # $Date$
>>
>> > > # $URL$
>>
>> > > # $Rev$
>>
>> > > # deployment_location: /etc/httpd/conf.d/
>>
>> > > #######################################################
>>
>> > > # ** DO NOT EDIT **
>>
>> > > # Master configuration file for the rhn_server setup
>>
>> > > #
>>
>> > >
>>
>> > > ##
>>
>> > > ## Spacewalk settings
>>
>> > > ##
>>
>> > >
>>
>> > > <VirtualHost *>
>>
>> > >
>>
>> > > <IfModule mod_jk.c>
>>
>> > >     # Inherit the mod_jk settings defined in zz-spacewalk-www.conf
>>
>> > >     JkMountCopy On
>>
>> > > </IfModule>
>>
>> > >
>>
>> > > <Directory "/var/www/html/*">
>>
>> > >         AllowOverride all
>>
>> > > </Directory>
>>
>> > >
>>
>> > > RewriteEngine on
>>
>> > > RewriteOptions inherit
>>
>> > > </VirtualHost>
>>
>> > >
>>
>> > > # Override default httpd prefork settings
>>
>> > > <IfModule prefork.c>
>>
>> > > StartServers       8
>>
>> > > MinSpareServers    400
>>
>> > > MaxSpareServers   400
>>
>> > > ServerLimit      1024
>>
>> > > MaxClients       1024
>>
>> > > MaxRequestsPerChild  200
>>
>> > > </IfModule>
>>
>> > >
>>
>> > > Include /etc/rhn/satellite-httpd/conf/rhn/rhn_monitoring.conf
>>
>> > >
>>
>> > >
>>
>> > >
>>
>> > >  Also added some network tuning to /etc/sysctl.conf
>>
>> > >
>>
>> > > net.ipv4.icmp_echo_ignore_broadcasts = 1
>>
>> > > net.ipv4.conf.all.secure_redirects = 0
>>
>> > > net.ipv4.tcp_max_syn_backlog = 8192
>>
>> > > net.ipv4.conf.default.secure_redirects = 0
>>
>> > > net.ipv4.tcp_syncookies = 1
>>
>> > > net.ipv4.conf.all.accept_source_route = 0
>>
>> > > net.ipv4.conf.all.rp_filter = 1
>>
>> > > net.ipv4.conf.all.send_redirects = 0
>>
>> > > net.ipv4.conf.default.accept_redirects = 0
>>
>> > > net.ipv4.conf.all.accept_redirects = 0
>>
>> > > net.ipv4.conf.default.send_redirects = 0
>>
>> > > net.core.somaxconn = 1536
>>
>> > > net.core.dev_weight = 512
>>
>> > > ##3x normal for a queue and budget suited to networks greater than 100mbps
>>
>> > > net.core.netdev_budget = 10000
>>
>> > > net.core.netdev_max_backlog = 30000
>>
>>
>>
>> > > Depending on the amount of memory on your Spacewalk server, you may want to increase your JAVA_OPTS Xms and Xmx settings to something a little higher. Typically only needed if you are seeing Java Heap out of memory errors in your Spacewalk logs.
>>
>>
>>
>> > > On Tue, Oct 28, 2014 at 11:21 AM, Waldirio Manhães Pinheiro <
>> waldirio at gmail.com> wrote:
>>
>>> > > Dear Krzysztof
>>>
>>> > > Have you checked your numa configuration ?!
>>>
>>> > > Maybe you can customize you environment to use the same bus to
>>> application / memory.
>>>
>>> > > ______________
>>> > > Atenciosamente
>>> > > Waldirio
>>> > > msn: waldirio at gmail.com
>>> > > Skype: waldirio
>>> > > Site: www.waldirio.com.br
>>> > > Blog: blog.waldirio.com.br
>>> > > LinkedIn: http://br.linkedin.com/pub/waldirio-pinheiro/22/b21/646
>>> > > PGP: www.waldirio.com.br/public.html
>>>
>>> > > On Tue, Oct 28, 2014 at 2:10 PM, Krzysztof Pawłowski <
>>> msciciel at msciciel.eu> wrote:
>>>
>>>> > > We have dedicated machine for db pgsql (16GB RAM , 8 cores)  and
>>>> seperate for spacewalk (16GB RAM, 8 Cores).
>>>>
>>>> > > I think that problem is with enormous number of queries to
>>>> database. During such request db is not utilized 100% and spacewalk is also
>>>> not 100% utilized.
>>>>
>>>>
>>>>
>>>> > > 2014-10-28 16:25 GMT+01:00 Götz Reinicke - IT Koordinator <
>>>> goetz.reinicke at filmakademie.de>:
>>>>
>>>>> > > Hi,
>>>>> > > Am 28.10.14 um 12:57 schrieb Krzysztof Pawłowski:
>>>>> > > > Hi,
>>>>> > > > Is there any guide about tuning spacewalk performance ? With
>>>>> every new
>>>>> > > > host spacewalk is getting slowly. Using SSM with more than
>>>>> 200-300 hosts
>>>>> > > > is impossible due timeouts. It's also not possible to deploy
>>>>> config
>>>>> > > > files to all hosts.
>>>>> > > > Standard java tuning was done, java gc is not the problem now.
>>>>> > > >
>>>>> > > > Any suggestions ?
>>>>>
>>>>> > > what server hardware do you use? What is the systemload while
>>>>> performing
>>>>> > > that tasks? CPU, RAM, Disksystem, IO, Network .... ?
>>>>>
>>>>>
>>>>> > >         /Götz
>>>>>
>>>>> > > --
>>>>> > > Götz Reinicke
>>>>> > > IT-Koordinator
>>>>>
>>>>> > > Tel. +49 7141 969 82 420
>>>>> > > E-Mail goetz.reinicke at filmakademie.de
>>>>>
>>>>> > > Filmakademie Baden-Württemberg GmbH
>>>>> > > Akademiehof 10
>>>>> > > 71638 Ludwigsburg
>>>>> > > www.filmakademie.de <http://www.filmakademie.de>
>>>>>
>>>>> > > Eintragung Amtsgericht Stuttgart HRB 205016
>>>>>
>>>>> > > Vorsitzender des Aufsichtsrats: Jürgen Walter MdL
>>>>>
>>>>
> > [The entire original message is not included.]
>
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