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Troubleshooting pacemaker: Pacemaker IP doesn't appear in ifconfig
Language English People who are used to manage our network devices through ifconfig, we find some trouble when putting a virtual IP in pacemaker, because we can't see it. If we type ip addr there it...
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Varnish basic configuration with http cache and stale-while
Language English In high-demand environments, we can reach the point where the number of PHP queries (or CGI queries) we want to serve through apache httpd is higher than our servers can handle. To...
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Crear usuari de graphite
Language English AttachmentSizegraphite1.png36.13 KBgraphite2.png34.08 KBGraphite is a powerful graphing tool. It allow you to graph anything fast and applying lots of functions so you can have the...
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Basic rundeck installation in RedHat, using apache as a proxy and mysql as a...
Language English AttachmentSizerundeck-login.png32.42 KBrundeck_create_project.png234.52 KBrundeck_home.png89.31 KBrundeck_home2.png106.4 KBWhen we have lots of servers and we need to execute jobs...
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Moving rundeck from one server to another
Language English Rundeck people just released an new version, la 1.5. Upgrading to this version is not as simple as usual (yum update or apt-get upgrade) because they've changed the database schema and...
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Tool to manage rundeck backups
Language English Another rundeck blog post. In the latest post we talked about how to move rundeck from one server to another, and we found out there are quite a lot of files to handle (ssh key files,...
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Monitoring a linux system with graphite
Language English In previous posts we talked about installing graphite. Now we should send it some data to store, and then start to play with the webapp. Graphite can graph lots of things, but we will...
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Monitoring cassandra, relevant data that should be watched (and how to send...
Language English AttachmentSizemx4j.png60.93 KBcassandra-graphite.png54.53 KBcassandra-graphite2.png46.38 KBgraphite-dash.png284.34 KBAfter the latest posts, we know how to install cassandra and tune...
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Cassandra - frequent mistakes
Language English Since we started working with Cassandra I've noted down all the mistakes we made due to our inexperience with the application, so we don't repeat them again. I didn't talk about them...
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Cassandra presentation at Cassandra Meetup: slides
Language English These are the slides of the Cassandra presentation I did in Barcelona Cassandra UsersMeetup last week. Feel free to criticize, comment or correct them!Tags:...
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