Devops Needs Sushi
Kaj wrote about using Dopplr to keep track of where colegues and friends are traveling and finding out about accidental meetups. (I even use it to track where one of the Inuits collegues work plans)
Now I have never met Giuseppe , but we shared slides before so I’d love to meet him one day .. connecting to him via Dopplr gives me that opportunity .. who knows one day Dopplr will tell me we have matching travel schedules.
So earlier this week I ran into the weirdest problem with Linux-HA. Heartbeat was happily adding an IP address as an active resource so one of my nodes when needed, but upon removal it failed to remove the IP from the stack. Further debugging learned that the Heartbeat scripts claimed the ip wasn’t on the actual stack.
It was.. but it the output from ifconfig was different from what it expected it to be.
The past couple of weeks my blog is being annoyed by different comment spams, the content of the comment seems perfectly relevant, often even correctly tackling the topic, or sometimes even almost insightful follow up questions.
However the link to the author site is totally bogus.
If talking about drupal and high availability , a question on GFS or OCFS2 is obviously on topic. However I don’t want my blog to link to lot of irrelevant sites.
While playing with unixbench there was a small note that you need /usr/bin/time ,
As my system by default didn’t have /usr/bin/time I assumed it was ok to modify the script and just let it run time . My First run came up with a 0 score.
Bad idea .. so it seems you really meed /usr/bin/time which is in the time rpm.
One day I`ll figure out the small differences :)
Florian is replying to James on the subject of using DRBD for MySQL HA. A discussion started earlier by Eric Florian is refuting most of the arguments that James has against using MySQL and DRBD together.
I`m also saying NO to MySQL and DRBD in most of the cases.. but not for any of the reasons James mentions.
I must say upfront I love DRBD and I have been using it in production for a long time but not for MySQL HA.
So time had come to move all my other blogs to drupal and move them away from blogger.
When I migrated this blog from dotclear to Drupal I found a php script that grabbed all the content from my dotclear setup and migrated it to a fresly installed drupal. I was hoping to find a similar tool for Blogger .
Well no such luck .. most of the links I found instructed me to first install wordpress, use the import functionality of wordpress then migrate from wordpress to Drupal.
John Quinn writes about Scaling Drupal he is taking a one step at a time approach and is still writing his 4th and 5 stages.
His first step obviously is separating the drupal from a separate database server, and he chooses mysql for this purpose, moving your DB to a different machine is a good thing to do.
However then he gets this crazy idea of using NFS to share his his drupal shared files :(
(he even dares to mention that the setup ease is good) Folks, we abandonned NFS in the late nineties. NFS is still a recipe for disaster, it has performance issues , it as stability issues (stale locks), and no security admin in his right mind will tolerate portmap to be running in his DMZ.
(Also think about the IO path that one has to follow to serve a static file to a surfer when the file is stored on a remote NFS volume)
So Sun bought ClusterFS. Im wondering what their focus will be now. What will be the prime platform on which Lustre will be developed Solaris or Linux ? Will other efforts in the open source cluster filesystem area react on this ? Will Lustre development speed up ? Will management become less complex ?\ Time will tell .. Im keeping an eye on it