Snel.com Outage History

Type: Incident Duration: 4 hours and 6 minutes Affected Components: Snel.com authoritative nameservers, Outgoing mail relay, Cloud VPS platform, Snel.com network infrastructure, Pure Performance VPS platform Apr 1, 12:45:36 GMT+0 - Resolved - This incident has been resolved. Apr 2, 10:16:34 GMT+0 - Postmortem - We introduced monitoring nf\_conntrack\_count and nf\_conntrack\_max and alerting at tresholds. This will help us (pro-actively) identify and with faster resolution times in the future. Apr 1, 08:39:46 GMT+0 - Investigating - We are currently investigating this incident. Apr 1, 10:07:36 GMT+0 - Monitoring - We implemented a fix and are currently monitoring the result.

Type: Incident Duration: 16 minutes Affected Components: Cloud VPS platform Mar 31, 19:06:19 GMT+0 - Resolved - At 20:50 CEST we received our first alert regarding a hypervisor being unreachable. Upon investigation we found that the nf\_conntrack table was full. We're still investigating what the reason for this is since we have a fairly high value for nf\_conntrack\_max, and nf\_conntrack\_count is nowhere near the value of nf\_conntrack\_max. We have increased (3x) nf\_conntrack\_max and rebooted the server. At 21:31 CEST the server was rebooted and all VM's were being started. Mar 31, 18:50:00 GMT+0 - Investigating - We are encountering an issue with hv03.snel.com.

Type: Incident Duration: 2 hours and 14 minutes Affected Components: SmartDC power network, My.snel.com - client area, Cloud VPS platform, Pure Performance VPS platform Dec 16, 18:00:00 GMT+0 - Investigating - We are currently investigating this incident. Dec 16, 20:14:00 GMT+0 - Resolved - Due to a defective PSU in one of our servers the circuit breaker triggered and all power was lost in Rack 12\. PSU has been replaced, all machines have been powered up.