我的 Apache 服务器每隔几秒/分钟就会死掉。这会杀死我的网站，并且不允许它们运行。我在 CentOS 上运行 VPS 服务。
有部分 error_log（更改 IP 和 DNS 名称）：
WARNING: MaxClients of 150 would require 6 servers,
and would exceed the ServerLimit value of 2.
Automatically lowering MaxClients to 50. To increase,
please see the ServerLimit directive.
[Fri May 31 12:50:54 2013] [notice] Digest: generating secret for digest authentication ...
[Fri May 31 12:50:54 2013] [notice] Digest: done
[Fri May 31 12:50:54 2013] [notice] mod_bw : Memory Allocated 0 bytes (each conf takes 32 bytes)
[Fri …