lefred

I am MySQL Community Manager for EMEA & APAC. I joined the MySQL Community Team in May 2016. I have been an OpenSource and MySQL consultant for more than 15 years. My favorite topics are High Availability and Performance.

Joined: April 26, 2016
Articles: 597
Comments: 372

Devel, Tips and tricks

Nagios JBoss Check

As I had to monitor some JBoss servers and as there are some memory leaks in the program, the monitoring in Nagios of the Garbage Collector is very important. I've found some jmx script on JBoss wiki, but I was not happy with it. So I rewrite it to use twiddle.sh with the attributes I needed. I had also to modify twiddle.sh to remove the logging capability (that was causing permission error) : # diff twiddle.sh twiddleFred.sh 58c58 < JBOSS_CLASSPATH="$JBOSS_CLASSPATH:$JBOSS_HOME/client/log4j.jar" --- > # removed to avoid log file JBOSS_CLASSPATH="$JBOSS_CLASSPATH:$JBOSS_HOME/client/log4j.jar" Those are the nrpe test I implemented : # check Perm Gen command[check_jbosspem]=/usr/lib/nagios/plugins/check_jbosspem 127.0.0.1 4 jboss.system:type=ServerInfo listMemoryPools "Perm Gen" 70 90 # check Old Gen (Heap Memory) command[check_jbossoldgen]=/usr/lib/nagios/plugins/check_jbosspem 127.0.0.1 4 jboss.system:type=ServerInfo listMemoryPools "Old Gen" 85 95

lefred
January 22, 2008
8 Comments

MySQL Swiss Army Knife

In this post I present my MySQL Swiss Army Knife, all the tools that make my life related to MySQL easier :-) - The first utility is of course the famous maatkit . I'll not describe here all the part of this toolkit, you will find a nice description on the website. but I want to underline the Table Sync that is very useful when you need to create a master/master replication without any downtime.

lefred
January 19, 2008
4 Comments

Tips and tricks

Tip: vi and lowercase/uppercase

As always I use my blog as reminder of some useful commands or tips. This one is for dimi, to change the case of a full document in vi, use the following command to transform everything in lowercase : <ESC>:%s/.*/\L&/ and in uppercase : <ESC>:%s/.*/\U&/ I hope this helps ;)

lefred
January 10, 2008
13 Comments

Welcome Planet Grep Be Readers

A big welcome to all new readers redirected to my feed from Planet Grep.be. Thanks to sdog for adding my blog to planet grep.be ;) Planet Grep.be

lefred
January 7, 2008
1 Comment

Skype chat in Pidgin

Today, sdog pointed me on a skype plugin for pidgin. I'm very happy with it even if it crashes sometimes, I'll have to check that... But now I've all my jabber,google talks, msn :( and skype contacts all on one IM ! [1] pidgin [2] skype beta for linux [3] skype plugin for pidgin

lefred
January 7, 2008
3 Comments

Cookie	Duration	Description
cookielawinfo-checbox-analytics	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checbox-functional	11 months	The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checbox-others	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-necessary	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-performance	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
viewed_cookie_policy	11 months	The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.