I have an IW DNS cluster setup on 2 VPS. I keep receiving the following email constantly:
“Hello, this is an automated e-mail generated by your control panel. I’ve detected a potential problem on this server (dns2.mydomain.com). You may want to look into it. Details of the problem are below.
The swap file usage on this server has exceeded the threshold of 97%. Current swap use is 100%.”
The DNS servers have 512MB RAM. VSwap is 256MB. The RAM usage is around 60% while the VSwap is at a constant 100%. I’m not sure if I can increase the VSwap. It’s an OpenVZ container. I don’t control the host.
I’m concerned about the performance of the DNS servers though the specs seem like they should be more than enough. I believe many people use half that much RAM. The servers have 2 cores and the CPU is idling around 0%.