Nahelou Sébastien wrote: % Hi Spacewalk lovers Hello Sebastian,
% Since we upgrade from 2.0 to 2.2, we encounter a capacity problem due to CPU usage overall. % When users load a system page in the GUI, the tomcat process grow to 90% usage. Api and GUI become unavailable or very slow. Are you able to identify which page causes such high load? % Our architecture is as following: % 5 rhn proxies % LVS Master/slave mode % 1 front master: SERVICES="jabberd $TOMCAT httpd osa-dispatcher Monitoring MonitoringScout rhn-search cobblerd taskomatic" % 1 front slave: SERVICES="jabberd $TOMCAT httpd osa-dispatcher Monitoring MonitoringScout " % 1 cluster PGSQL % % Our masters have 2* Intel(R) Xeon(R) CPU E5-2609 / 92 RAM / raid 1 using CentOS 6.5. % % We have about 6000 systems registered, about 40 organizations and more than 600 channels (including cloned) % % My questions are: % - Is it possible to scale spacewalk horizontally ? By changing lvs configuration to Active/Active ? By using HAProxy ? other ? We've never tested Active/Active cluster. I dare to say it won't work. Our recomendation is to use one Spacewalk Proxy for every 5000 systems. % - Is it possible to tune tomcat better than adding memory ? (we use actually -Xms8196m -Xmx16384m) I don't know. Frankly I've never heard a report about necessity to do so. % - What is the maximum number of systems that we can register in 1 organisation ? (Actually our max seems to be 1700) We know about installations with tens to hundereds of thousands systems. % - Is there a maximum number of systems that we can register in a Spacewalk cluster ? No, it's limmited only by numbers in your spacewalk certificate. Default certificate is limited to 20000. If you need more you can generate your own. % Thank in advance % % Sébastien NAHELOU % System engineer % Worldline - Seclin - France Regards, -- Michael Mráka Satellite Engineering, Red Hat _______________________________________________ Spacewalk-list mailing list [email protected] https://www.redhat.com/mailman/listinfo/spacewalk-list
