Yauth : Felicidades a los #BOFHers ... The little ssh that (sometimes) couldn't - Mina Naguib. Preface This is a technical article chronicling one of the most interesting bug hunts I’ve had the pleasure of chasing down. At AdGear Technologies Inc. where I work, ssh is king. We use it for management, monitoring, deployments, log file harvesting, even real-time event streaming. It’s solid, reliable, has all the predictability of a native unix tool, and just works. Until one day, random cron emails started flowing about it not working. The timeout The machines in our London data center were randomly failing to send their log files to our data machines in our Montreal data center.
Cron emails stating that the ssh was unsuccessful Sometimes hangs Sometimes exits with a timeout error nagios warnings down the line for in-house sanity checks detecting the missing data in Montreal We logged into the London machines, manually ran the push command, and it worked successfully. The timeouts But the failures kept popping up randomly. There were 17 hops between London and Montreal. The revelation. MySQL HA/Scalability Guide :: 2 Using MySQL with DRBD.
Hacking. Linux. Howto. Mysql. Ubuntu. Sun. Macosx. Backup. Sysprep. Openbsd. Data Center Knowledge: Data centers, design, power, cooling. Webmin. How to reset my SMF administrative password. If you forgot your password you can reset it by following these steps: Go to the SMF script –> Click on ‘login’ –> Click on ‘Forgot your password?’ –> Type your ‘Username/Email:’ from the registration –> Click ‘Send’ You will receive e-mail with link which will force new password to be typed. If you’ve misspelled the email address when registering or do not remember it, there is another way to force new password change: Log in cPanel and click on ‘phpMyAdmin’ from the Databases box.
On the top left box select the database of your SMF. c435fc4b8ad32ee97ec39c636ee9b644ca2c7c57 Now your password is changed to sg123 and you can use it to log in. Rating: 1.0/5 (1 vote cast) How to reset my SMF administrative password, Rating 1.0 out of 5 based on 1 vote. ¿Cómo visualizar la actividad de Apache con mod_status? Munin&mdash;the Raven Reports. The long-term monitoring tool Munin was developed in Norway, and its name is derived from Norse mythology. One of the two ravens who report the news of the world to the god Odin is called Munin, and the other is named Hugin. Munin is “memory”, and Hugin is “thought”. The cool thing about the Munin long-term monitoring suite is that it's not restricted to supervising only typical system and network parameters. For example, you easily could do your colleagues from the marketing department a favor and monitor product sales for them. All you need to do is to write a script or program in the language of your choice that returns the current value of the monitored parameter in the form <parameter>.value <value> (ending with a newline character) on the standard output.
It's a little less trivial to understand how Munin actually works. A Master to Collect, Store and Present Data To use the monitoring software, you need a machine that hosts a Web server and has Tobias Oetiker's RRDtool installed. GlTail.rb - realtime logfile visualization.