nion's blog

The server is up again.
Yesterday it was down after we noticed that it has some problems.
First I thought it is a hardware issue but after Strato checked (its in a Strato rack) they told us that its not an hardware issue. It seems that the kernel randomly killed processes cause another process (think it was the database) used nearly all of the RAM and also swap space ;(

Talking about logs it looks like:

__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process apache2
VM: killing process snort
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process apache2
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)
VM: killing process cron
__alloc_pages: 0-order allocation failed (gfp=0xf0/0)
__alloc_pages: 0-order allocation failed (gfp=0x1d2/0)