Téma: Vps segítség

1. 2GB
2. Nem, ott Debian 5 volt, a többi lényegében ua.
3. Nem, maximum ritkán
4.

Nov 28 23:54:28 mandarin kernel: [10212544.309771] mysqld invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0
Nov 28 23:54:48 mandarin kernel: [10212544.309777] mysqld cpuset=/ mems_allowed=0
Nov 28 23:54:48 mandarin kernel: [10212544.309780] Pid: 4477, comm: mysqld Not tainted 2.6.32-5-amd64 #1
Nov 28 23:54:48 mandarin kernel: [10212544.309782] Call Trace:
Nov 28 23:54:48 mandarin kernel: [10212544.309792] [] ? oom_kill_process+0x7f/0x23f
Nov 28 23:54:48 mandarin kernel: [10212544.309795] [] ? __out_of_memory+0x12a/0x141
Nov 28 23:54:48 mandarin kernel: [10212544.309797] [] ? out_of_memory+0x140/0x172
Nov 28 23:54:48 mandarin kernel: [10212544.309801] [] ? __alloc_pages_nodemask+0x4e5/0x5f4
Nov 28 23:54:48 mandarin kernel: [10212544.309804] [] ? __do_page_cache_readahead+0x9b/0x1b4
Nov 28 23:54:48 mandarin kernel: [10212544.309807] [] ? ra_submit+0x1c/0x20
Nov 28 23:54:48 mandarin kernel: [10212544.309811] [] ? filemap_fault+0x17d/0x2f6
Nov 28 23:54:48 mandarin kernel: [10212544.309816] [] ? __do_fault+0x54/0x3c3
Nov 28 23:54:48 mandarin kernel: [10212544.309820] [] ? do_sync_write+0xce/0x113
Nov 28 23:54:48 mandarin kernel: [10212544.309823] [] ? handle_mm_fault+0x3b8/0x80f
Nov 28 23:54:48 mandarin kernel: [10212544.309829] [] ? xen_hvm_callback_vector+0xe/0x18
Nov 28 23:54:48 mandarin kernel: [10212544.309835] [] ? do_page_fault+0x2e0/0x2fc
Nov 28 23:54:48 mandarin kernel: [10212544.309838] [] ? page_fault+0x25/0x30
Nov 28 23:54:48 mandarin kernel: [10212544.309840] Mem-Info:
Nov 28 23:54:48 mandarin kernel: [10212544.309841] Node 0 DMA per-cpu:
Nov 28 23:54:48 mandarin kernel: [10212544.309843] CPU 0: hi: 0, btch: 1 usd: 0
Nov 28 23:54:48 mandarin kernel: [10212544.309845] Node 0 DMA32 per-cpu:
Nov 28 23:54:48 mandarin kernel: [10212544.309847] CPU 0: hi: 186, btch: 31 usd: 30
Nov 28 23:54:48 mandarin kernel: [10212544.309851] active_anon:101279 inactive_anon:101349 isolated_anon:902
Nov 28 23:54:50 mandarin kernel: [10212544.309852] active_file:130 inactive_file:884 isolated_file:26
Nov 28 23:54:50 mandarin kernel: [10212544.309853] unevictable:0 dirty:0 writeback:163 unstable:0
Nov 28 23:54:50 mandarin kernel: [10212544.309854] free:1993 slab_reclaimable:2942 slab_unreclaimable:7541
Nov 28 23:54:50 mandarin kernel: [10212544.309855] mapped:862 shmem:1538 pagetables:31078 bounce:0
Nov 28 23:54:50 mandarin kernel: [10212544.309857] Node 0 DMA free:4012kB min:60kB low:72kB high:88kB active_anon:5100kB inactive_anon:5296kB active_file:0kB inactive_file:160kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15364kB mlocked:0kB dirty:0kB writeback:0kB mapped:28kB shmem:92kB slab_reclaimable:136kB slab_unreclaimable:268kB kernel_stack:176kB pagetables:480kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:54 all_unreclaimable? yes
Nov 28 23:54:50 mandarin kernel: [10212544.309866] lowmem_reserve[]: 0 990 990 990
Nov 28 23:54:50 mandarin kernel: [10212544.309868] Node 0 DMA32 free:3960kB min:3992kB low:4988kB high:5988kB active_anon:400016kB inactive_anon:400100kB active_file:520kB inactive_file:3376kB unevictable:0kB isolated(anon):3608kB isolated(file):104kB present:1014040kB mlocked:0kB dirty:0kB writeback:652kB mapped:3420kB shmem:6060kB slab_reclaimable:11632kB slab_unreclaimable:29896kB kernel_stack:4288kB pagetables:123832kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:8054 all_unreclaimable? yes
Nov 28 23:54:50 mandarin kernel: [10212544.309877] lowmem_reserve[]: 0 0 0 0
Nov 28 23:54:50 mandarin kernel: [10212544.309880] Node 0 DMA: 3*4kB 4*8kB 50*16kB 9*32kB 9*64kB 2*128kB 0*256kB 0*512kB 0*1024kB 1*2048kB 0*4096kB = 4012kB
Nov 28 23:54:50 mandarin kernel: [10212544.309886] Node 0 DMA32: 774*4kB 22*8kB 3*16kB 0*32kB 0*64kB 1*128kB 0*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 3960kB
Nov 28 23:54:50 mandarin kernel: [10212544.309892] 20712 total pagecache pages
Nov 28 23:54:50 mandarin kernel: [10212544.309894] 18148 pages in swap cache
Nov 28 23:54:50 mandarin kernel: [10212544.309895] Swap cache stats: add 4971315, delete 4953167, find 2155781459/2156794312
Nov 28 23:54:50 mandarin kernel: [10212544.309897] Free swap = 0kB
Nov 28 23:54:50 mandarin kernel: [10212544.309898] Total swap = 1951736kB
Nov 28 23:54:50 mandarin kernel: [10212544.313331] 261120 pages RAM
Nov 28 23:54:50 mandarin kernel: [10212544.313333] 5314 pages reserved
Nov 28 23:54:50 mandarin kernel: [10212544.313334] 87279 pages shared
Nov 28 23:54:50 mandarin kernel: [10212544.313335] 248961 pages non-shared
Nov 28 23:54:50 mandarin kernel: [10212544.313339] Out of memory: kill process 4321 (apache2) score 104915 or a child
Nov 28 23:54:50 mandarin kernel: [10212544.314191] Killed process 4321 (apache2)

Egyébként az kiderült, hogy a 173.237.187.248 IP címről érkezett másodpercenként 10-20, főként HEAD lekérdezés és utána halt be.

Elfogyott a swap terület:
Nov 28 23:54:50 mandarin kernel: [10212544.309897] Free swap = 0kB
Nov 28 23:54:50 mandarin kernel: [10212544.309898] Total swap = 1951736kB

A head-es cucc lehet bot hálózat. Ha apache-ban be van kapcsolva a keep_alive, akkor érdemes azon gondolkodni, hogy azt kikapcsold. Emellett nézd meg access.log-ot, hogy mit hívott meg. Az IP-t gondolom már tűzfallal kitiltottad.