Even if you're not running java in your stack, it's worth a quick check on your servers. Our SoftLayer servers use an Adaptec RAID card and the monitoring software uses the JVM and will suck up all of your CPU. All of our MySQL/Cassandra/Redis/Kestrel servers needed to be bounced because they had RAID cards. Frustrating.
I also use Softlayer and have a pair of servers with Adaptec RAID cards. Checking up on them they were not affected.
Having looked in to it, it seems our server admin decided to install OpenNTP to replace the standard NTP daemon. I'm not sure why he did that, but it seems OpenNTP just ignores leap seconds and compensates after the fact just as if your clock had drifted a second out of sync in the usual way.
Even if you don't have java installed but you're running on shared infrastructure that might be running MySQL/Java elsewhere it's a crazy day. My inbox is full of performance-below-acceptable-levels/high-load alerts.
Comments
Even if you're not running java in your stack, it's worth a quick check on your servers. Our SoftLayer servers use an Adaptec RAID card and the monitoring software uses the JVM and will suck up all of your CPU. All of our MySQL/Cassandra/Redis/Kestrel servers needed to be bounced because they had RAID cards. Frustrating.
I also use Softlayer and have a pair of servers with Adaptec RAID cards. Checking up on them they were not affected.
Having looked in to it, it seems our server admin decided to install OpenNTP to replace the standard NTP daemon. I'm not sure why he did that, but it seems OpenNTP just ignores leap seconds and compensates after the fact just as if your clock had drifted a second out of sync in the usual way.
Even if you don't have java installed but you're running on shared infrastructure that might be running MySQL/Java elsewhere it's a crazy day. My inbox is full of performance-below-acceptable-levels/high-load alerts.