936 reputation
312
bio website kormoc.com
location Seattle, WA
age 32
visits member for 3 years, 1 month
seen Jan 28 at 22:32

Senior DevOps Engineer with 10 years experience working on large and small scale web focused products. Extensive knowledge of MySQL both in operational and development roles. Proficient with Python, Bash, PHP, and Javascript. Full stack infrastructure management and agile monitoring.


Jun
10
comment Firebug shows slow waiting times
Not offhand. It could be so many different things that just installing and bouncing around in it looking to see if anything stands out is the first thing I would do.
Jun
6
comment Configure Squid to cache images explicitly called from img src=“”
Glad it worked for you. I have to admit, it took me a week or two to get a similar cache everything squid config written. It's not always obvious what the proper way is to setup squid.
Jun
6
comment Grow 3ware raid 10 unit capacity
At least 3 minutes, and that's after I verified the backups were all solid :)
Jun
5
comment tar operation taking extremely long time
This is the answer. Remove the compression and it'll speed right up.
Jun
1
comment Why do I see a large performance hit with DRBD?
My wager is ext4's journal fsyncs are killing the performance. Can you try with an external journal or no journal at all (ext2)?
Jun
1
comment How do I check if a user exists in puppet?
Thanks for the fix geekQ, it's been updated. I had copied and pasted the user code from the question and didn't notice that it destroyed stdout and stderr.
Mar
1
comment Can I use ipmitool to determine if an IPMI link is 'up'?
FWIW, we have the same issue when we give power to the computer before plugging in the ipmi network interface. We've only been able to recover by unplugging the server, waiting awhile and plugging it back in :(
Mar
1
comment Is there any sense to repurpose old hdds to maximise lifetime?
If they're powered up, they'll age and die
Feb
26
comment Restoring mysql dumps from incrementals
Replication is exactly the way to go
Feb
26
comment 100 Mb/s port limit reached or something else?
Also you might want to use sar to monitor io/cpu during the night as well
Feb
26
comment Can OpenVPN invoke DHCP Client?
There isn't anything more universal. I would claim that the majority of folks have the vpn server assign the ips dynamically or use static ips defined for the client.
Feb
26
comment Restoring mysql dumps from incrementals
He did specifically say he had incremental backups, so one would assume he created them with some utility
Feb
26
comment Restoring mysql dumps from incrementals
He could be using Innodb Hot Backup or XtraBackup or other tools to be doing binary incremental backups. Binary logs are not the only way to skin this cat.
Feb
25
comment What's the common practice of when to update a soon expiring SSL certificate?
I can't upvote using nagios or similar to monitor ssl hosts enough. It catches those times you add a new server into the pool and it's not configured correctly for https as well, which seems to be a commonish issue.
Feb
25
comment Does MySQL/InnoDB checksum my data?
It entirely depends on your media. A single sata/ide hard drive doesn't do checksums, so a flipped bit wouldn't be detected. A raid-1 array would detect it, and a three disk raid-1 would be able to repair it. SSDs tend to do checksums to detect when pages start failing due to wear.
Feb
25
comment Does MySQL/InnoDB checksum my data?
You also can use the innochecksum tool to verify any binary backups you make as well. Url: dev.mysql.com/doc/refman/5.0/en/innochecksum.html
Feb
25
comment Server thinks a request is coming from my gateway
Can you diagram the network layout and example IPS? Something akin to 1.2.3.4 -Internet-> 192.168.1.1 -Private-> 192.168.1.5 ?
Feb
25
comment Why is SSHD hanging at “Server accepts key”
Did you give it a few minutes to finish? It could have been your DNS server was down and it was waiting for the reverse DNS to time out
Feb
21
comment No more diskspace on server
the deleted mysqld files are all size 0, so they're not the ones using the disk space.
Feb
21
comment Redirect HTTPS to HTTP
Sweet. Glad to have helped :)