How to disable Ubuntu Network Manager

1. Introduction

How to disable Ubuntu Network Manager

2. Steps

sudo /etc/dbus-1/event.d/26NetworkManagerDispatcher stop

sudo /etc/dbus-1/event.d/25NetworkManager stop

touch /etc/default/NetworkManager

touch /etc/default/NetworkManagerDispatcher

echo “/etc/dbus-1/event.d/26NetworkManagerDispatcher stop” > /etc/init.d/networkmanager.disable

echo “/etc/dbus-1/event.d/25NetworkManager stop” > /etc/init.d/networkmanager.disable
chmod +x /etc/init.d/networkmanager.disable
ln -s /etc/init.d/networkmanager.disable /etc/rc2.d/S91NetworkManager.disable

3. References

• http://jmmwrite.wordpress.com/2007/12/27/desabilitando-o-network-manager-no-ubuntu/

Confluence catalina.sh configuration - tuning issue

1. My catalina.sh

#JAVA_HOME=/opt/j2sdk1.4.1_03
JAVA_HOME=/usr/lib/jvm/java-6-sun-1.6.0.20


# Josemar Silva - 2012-04-05
CATALINA_OPTS="-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9001 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false"



# Josemar Silva - 2012-04-05
JAVA_OPTS="-Xms1024m -Xmx1024m -XX:MaxPermSize=128m -XX:+UseParallelOldGC -XX:+DisableExplicitGC -Djava.awt.headless=true -Dconfluence.disable.peopledirectory.anonymous=true -verbose:gc -Xloggc:/opt/jakarta-tomcat-4.1.27/logs/gc_confluence.txt -XX:+PrintGCTimeStamps -XX:+PrintGCDetails -Dbucket.indexing.threads.fixed=5"

2. References

• http://confluence.atlassian.com/display/DOC/Performance+Tuning
• http://confluence.atlassian.com/display/CONF256/Managing+Application+Server+Memory+Settings
• http://confluence.atlassian.com/display/DOC/Garbage+Collector+Performance+Issues
• http://confluence.atlassian.com/display/DOC/Configuring+System+Properties

Configuring Apache access.log and debug performance issues in pages

1. Referência

http://httpd.apache.org/docs/1.3/logs.html#common

2. Configuring Apache 1

$ vim /etc/httpd/conf/httpd.conf

     :

LoadModule access_module modules/mod_access.so

     :

LogFormat "%h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\" %T" combined

LogFormat "%h %l %u %t \"%r\" %>s %b" common

LogFormat "%{Referer}i -> %U" referer

LogFormat "%{User-agent}i" agent

%T:

3. Wait for incident

wait for incident monitoring server status

http://apache-server/status-server

4. Analyse last entries in access.log

$ cd /var/log/httpd

$ tail -15000 www.inmetrics.log | grep 'confluence' | awk '$NF > 60 { print $0 }' | less
$ tail -10000 www.inmetrics.log | grep 'confluence' | grep '05/Apr/2012:09:2' | awk  '{ print $4, $7, $NF}' | sort