The world’s next leap second adjustment is scheduled for 30th of June 2015 at 23:59:60 UTC and system administrators need to be aware that this may cause issues on NTP synchronized devices and operating systems. Older Linux kernels are known to be affected by leap second.
VMware has already issued the following articles on the topic:
- Support for Leap Seconds in VMware Products (2115818)
- Addition of leap second may result in vCNS Manager/App/Edge/Data Security appliances becoming non-responsive (2120837)
- VMware #ESXi and Leap Seconds (2121190)
- Enabling Slew Mode for NTP (2121016)
Please consider your infrastructure and look for information about issues and fixes to address the upcoming leap second.