Server Crashing Frequently
May 1, 2008
this is getting out of control. I have a dedicated server that is "unmanaged" meaning, I manage it
I typically can make my way around a server and do most things - but in this case I'm stuck. I host a number of websites on this box and have went over a year with little problems. The past month or so it seems as though the server crashes daily or every other day. It will be running just fine, then all of a sudden the processes and loads will go out of control until the server is just unusable.
What do I need to provide here for you to be of any help to me? I watch the processes using "top -ci" and it's typically small output - but when it's getting ready to crash it's like a ton of processes get backed up and continue running.
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Oct 3, 2008
I've been running 3 Xen servers for the last few months in a production environment, and facing a strange problem with one of them.
Server 1 and 2 run a couple of DomU's and are running just fine.
Server 3 runs one DomU and takes care of all the backups for the DomU's of Server 1 and 2
The DomU on Server 3 is crashing every night, right when the backups are being made.
DomU becomes inaccessible, but keeps appearing at xm list with state ------
When I try to connect to the console it wont let me connect. The only way to get the DomU back up is by using xm destroy and xm create again.
For the back-up I use NFS where the DomU on Server 3 is the host, and the other DomU's of Server 1 and 2 connect to it through an internal bridge.
Below you'll find some information about Server 3:
Hardware:
HP ProLiant DL380 G5
10Gb Memory
( 8 x 146G SAS10k in RAID 5 )
Dom0:
CentOS 5 kernel 2.6.18-92.1.10.el5xen
Booting params: dom0_mem=1024M
DomU:
CentOS 5 kernel 2.6.18-92.1.10.el5
Booting params: acpi=off clock=pit
The last qemu-dm log on Dom0:
char device redirected to /dev/pts/1
qemu_map_cache_init nr_buckets = 4000
shared page at pfn bffff
buffered io page at pfn bfffd
xs_read(/vm/a8af3ec4-19d4-774e-af65-0902374dc616/rtc/timeoffset): read error
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
Triggered log-dirty buffer switch
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
I/O request not ready: 0, ptr: 0, port: 0, data: 0, count: 0, size: 0
xs_write(/vm/a8af3ec4-19d4-774e-af65-0902374dc616/rtc/timeoffset, rtc/timeoffset): write error
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Jun 10, 2007
I have a server from FDCservers
My server is down at least 2 times a day causing downtime of 10 minutes to hours!
Configuration:
Core2DUO E6600
1 GB RAM
400 GB HDD
100 mbit port
cPanel/WHM/Fantastico/Rvskin
CentOS 4.5 32 bit
They swapped the RAM many times but still it sisnt resolved
I asked PSM to look why it crashes, they said that its working fine and tweaked settings. Please open a ticket again if it goes down again.
I am not going to open a ticket again and again everytime when it goes down since I am not online everytime.
When it crashes(or whatever) it responds to ping requests but not to http ssh ftp or anything else including cPanel/WHm.
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Apr 28, 2009
This is the Strange problem i face. my blog goes down while the server is up, comes back automatically after some time.
I can access the Cpanel without a problem, can anyone tell whats wrong?
Code:
C:Documents and SettingsGaurish>ping [url]
Ping request could not find host [url] Please check the name
d try again.
C:Documents and SettingsGaurish>ping [url]
[url][67.228.104.181] with 32 bytes of data:
Reply from 67.228.104.181: bytes=32 time=495ms TTL=50
Reply from 67.228.104.181: bytes=32 time=468ms TTL=50
Reply from 67.228.104.181: bytes=32 time=500ms TTL=50
Reply from 67.228.104.181: bytes=32 time=515ms TTL=50
Ping statistics for 67.228.104.181:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 468ms, Maximum = 515ms, Average = 494ms
During this i don't change any setting, so less chance misconfiguration
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Oct 30, 2009
globichen can explain about this.
ping timeout happen frequently.
this is the 2nd time happen in a week
i've submit a ticket regarding about this
customer service replies with server is online.
i'm not bashing their service but frequently ping timeout really makes my business down lately.
Loading website takes a few min & even couldn't access to server due to ping timeout.
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May 16, 2007
Code:
Kernel Version2.6.18-4-686 (SMP)
Distro Name Debian 4.0
Model Intel(R) Pentium(R) 4 CPU 2.40GHz
I've installed the default apache 2, mysql, php using aptitude.
The server load is not at all high, around 1-1.5 max. The apache processes running are at an avg 60-80. It has 1GB ram and Disk Swap usage is 0kB
My server keeps rebooting every now and then. These are the messages I get in the ssh session just before the reboot..
Code:
Message from syslogd@xxx at xxx
kernel: Bad page state in process 'apache2'
kernel: page:c17bc0a0 flags:0xc0000000 mapping:00800040 mapcount:0 count:0
kernel: Trying to fix it up, but a reboot is needed
kernel: Backtrace:
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Jul 19, 2008
System specs:
Intel Celeron Proccesor
256 RAM (yeah I know...)
Debian Etch
Joomla! 1.5
Okay... so, here goes.
Recently, I have switched from Siteground hosting services and everything was fine. Now I have changed over to a dedicated server that resides at my house. I'm routing DNS through FreeDNS (freedns.afraid.org).
For a week or two, the server was fine. Recently, we started working on the website on the new server (posting new articles, changing the theme, adding some plugins, etc.) and it's steadily gotten worse and worse about, when we save changes to something, or post an article, the website will go offline. Eventually, the website will come back.
My question is: What is causing this? The actual server isn't shutting off, so It has to be something between my modem and the user. Is my modem just shutting off because it's overloaded? (that seems sort of improbable) Or, is it a DNS issue? (I have a Dynamic DNS system set up that is working fine)
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Feb 27, 2008
My server keeps crashing and this is the last log. Can you help me to find out whats the problem here.
Feb 27 11:41:55 Xxxxxxxx kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Feb 27 11:41:55 Xxxxxxxx kernel: ata1.00: (BMDMA stat 0x25)
Feb 27 11:41:55 Xxxxxxxx kernel: ata1.00: cmd 25/00:00:bf:eb:0f/00:04:04:00:00/e0 tag 0 cdb 0x0 data 524288 in
Feb 27 11:41:55 Xxxxxxxx kernel: res 51/40:f6:c9:ec:0f/40:02:04:00:00/e0 Emask 0x9 (media error)
Feb 27 11:41:55 Xxxxxxxx kernel: ata1.00: configured for UDMA/133
Feb 27 11:41:55 Xxxxxxxx kernel: ata1: EH complete
Feb 27 11:41:56 Xxxxxxxx kernel: SCSI device sda: 976773168 512-byte hdwr sectors (500108 MB)
Feb 27 11:41:56 Xxxxxxxx kernel: sda: Write Protect is off
Feb 27 11:41:57 Xxxxxxxx kernel: SCSI device sda: drive cache: write back
Feb 27 12:11:26 Xxxxxxxx kernel: ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
Feb 27 12:11:26 Xxxxxxxx kernel: ata1.00: (BMDMA stat 0x24)
Feb 27 12:11:28 Xxxxxxxx kernel: ata1.00: cmd 25/00:08:47:83:a6/00:00:1f:00:00/e0 tag 0 cdb 0x0 data 4096 in
Feb 27 12:11:28 Xxxxxxxx kernel: res 51/40:00:4e:83:a6/40:00:1f:00:00/e0 Emask 0x9 (media error)
Feb 27 12:11:28 Xxxxxxxx kernel: ata1.00: configured for UDMA/133
Feb 27 12:11:28 Xxxxxxxx kernel: ata1: EH complete
Feb 27 12:11:28 Xxxxxxxx kernel: SCSI device sda: 976773168 512-byte hdwr sectors (500108 MB)
Feb 27 12:11:28 Xxxxxxxx kernel: sda: Write Protect is off
Feb 27 12:11:28 Xxxxxxxx kernel: SCSI device sda: drive cache: write back
Feb 27 12:11:51 Xxxxxxxx kernel: ** RABHIT ** IN=eth0 OUT= MAC=00:30:48:90:ea:50:00:17:cb:4b:9a:00:08:00 SRC=83.143.15.168 DST=xx.xx.xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=45 ID=3304 PROTO=TCP SPT=113 DPT=57956 WINDOW=0 RES=0x00 ACK RST FIN URGP=0
Feb 27 12:14:07 Xxxxxxxx smartd[6368]: Device: /dev/sda, 95 Currently unreadable (pending) sectors
Feb 27 12:14:07 Xxxxxxxx smartd[6368]: Device: /dev/sda, 21 Offline uncorrectable sectors
Feb 27 12:31:44 Xxxxxxxx named[2355]: lame server resolving '245.236.229.195.in-addr.arpa' (in '236.229.195.in-addr.arpa'?): 194.170.1.6#53
Feb 27 12:31:44 Xxxxxxxx pure-ftpd: (?@204.13.168.174) [INFO] Logout.
Feb 27 12:31:58 Xxxxxxxx named[2355]: lame server resolving '217.236.229.195.in-addr.arpa' (in '236.229.195.in-addr.arpa'?): 194.170.1.99#53
Feb 27 12:33:15 Xxxxxxxx kernel: ** RABHIT ** IN=eth0 OUT= MAC=00:30:48:90:ea:50:00:17:cb:4b:9a:00:08:00 SRC=78.172.82.50 DST=xx.xx.xx.xx LEN=40 TOS=0x00 PREC=0x00 TTL=46 ID=39216 PROTO=TCP SPT=113 DPT=43432 WINDOW=0 RES=0x00 ACK RST FIN URGP=0
Feb 27 12:34:38 Xxxxxxxx snmpd[27298]: Connection from UDP: [204.13.168.174]:41549
Feb 27 12:34:38 Xxxxxxxx snmpd[27298]: Received SNMP packet(s) from UDP: [204.13.168.174]:41549
Feb 27 12:34:38 Xxxxxxxx snmpd[27298]: Connection from UDP: [204.13.168.174]:41549
Feb 27 12:34:38 Xxxxxxxx snmpd[27298]: Connection from UDP: [204.13.168.174]:41549
Feb 27 12:34:38 Xxxxxxxx snmpd[27298]: Connection from UDP: [204.13.168.174]:41551
Feb 27 12:34:38 Xxxxxxxx snmpd[27298]: Received SNMP packet(s) from UDP: [204.13.168.174]:41551
Feb 27 12:34:38 Xxxxxxxx snmpd[27298]: Connection from UDP: [204.13.168.174]:41551
Feb 27 12:34:40 Xxxxxxxx last message repeated 10 times
Feb 27 12:35:16 Xxxxxxxx snmpd[27298]: Connection from UDP: [204.13.168.174]:41880
Feb 27 12:35:16 Xxxxxxxx snmpd[27298]: Received SNMP packet(s) from UDP: [204.13.168.174]:41880
Feb 27 12:35:16 Xxxxxxxx snmpd[27298]: Connection from UDP: [204.13.168.174]:41880
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Feb 19, 2007
I cannot figure out why my server is always dead when i wake up most mornings.
I am trying to figure out why my server is crashing nearly every night between 12am and 9am eastern time. When it crashes it is down all night until i wake up and have to reboot the damn server. I am wondering if cron jobs are taking up alot of the cpu or something because the server load isn't that much. here is my specs:
Server:
Softlayer
2 CPUS - dual core xenon 3.0mhz
500gb hd
2 gb DDR memory
Softare:
WHM/Control Panel with Ipanel back admin
Sites:
I am currently hosting 4,500 sites on the server.
The server load usually stays below 1 and is blazing fast. I just cannot figure out why it crashes when i sleep. I dont know if there is a virus or what. PHP mail is disabled so there would be no spamming crashing it. Here is my cron jobs:
17 2 * * * /scripts/upcp
0 1 * * * /scripts/cpbackup
*/15 * * * * /usr/local/cpanel/whostmgr/bin/dnsqueue > /dev/null 2>&1
2,58 * * * * /usr/local/bandmin/bandmin
0 0 * * * /usr/local/bandmin/ipaddrmap
31 5 * * * /usr/local/cpanel/whostmgr/docroot/cgi/cpaddons_report.pl --notify
56 18 * * * cd /usr/local/cpanel/whostmgr/docroot/cgi/fantastico/scripts/ ; /usr/local/cpanel/3rdparty/bin/php cron.php > /d$
0 8 * * * /root/homedb_update.sh > /dev/null 2>&1
0 6 * * * /scripts/exim_tidydb > /dev/null 2>&1
*/5 * * * * /usr/local/cpanel/bin/dcpumon >/dev/null 2>&1
I dont know much about cron jobs as I am new to this server hosting thing and just bought an established company. Maybe one of the cron jobs is causing it to crash in the middle of the night?
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May 2, 2007
I have a FreeBSD server with Cpanel. It keeps crashing every few hours. Data centre swapped RAM, Chassie but no luck. Hard Drive was scanned and no errors found. I can't find anything in the logs (/var/logs/messages). Which direction should I be looking into?
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Apr 20, 2008
One of my servers at FDC Servers is crashing (= kernel panic) every few days since we got it.
The specs of the machine are:
C2D E6550, 2 GB
Linux .. 2.6.24.4-64.fc8 #1 SMP Sat Mar 29 09:15:49 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
I opened several tickets with FDC, after running memtest and clocking down memory they say it's not a hardware issue but software related.
Quote:
I see that according to this ticket, memtest has been run without error and the memory was even slightly clocked down to avoid problems. It appears that the errors you are reporting are software related...
I already tried several kernels and different application versions.
The server is only running lighttpd.
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Jan 10, 2007
as many of you know, FreeBSD is a stable system... I have many other FreeBSD servers (with the same kernel as this one) that doesn't have problems but this server keeps rebooting once or twice a day (EVERY DAY)
it's just a reboot... something very very similar to someone pushing the reset button
1) messages, security, auth or dmesg has no entries just before the reset, so the kernel is not getting aware the server is rebooting
2) the server comes back after around 10 minutes (reboot time + fsck)
this is happening for long time, so I compiled a new kernel... and the problem didn't stop
I request the datacenter techs to replace hardwares and they told me everything was replaced: motherboard, CPU, memories... and yesterday also the power suply
so I have no other idea on what to do
in fact I have one... setting a nobreak in this server power suply for 2 or 3 days to see if the problem stops, but the datacenter didn't like this idea
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Feb 20, 2007
this server is crashing after a few hours... it just got frozen... and after rebooted the server, i was looking at the /var/log/message logs and saw this ( you will see when system restart after the crash ):
Code:
Feb 20 17:35:04 server kernel: grsec: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:13280]
uid/euid:48/48 gid/egid:48/48, parent /us
r/sbin/httpd[httpd:6180] uid/euid:48/48 gid/egid:48/48
Feb 20 17:41:40 server kernel: grsec: From 190.73.138.68: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:27459]
uid/euid:48/48 gid/eg
id:48/48, parent /usr/sbin/httpd[httpd:20166] uid/euid:48/48 gid/egid:48/48
Feb 20 17:45:03 server kernel: grsec: signal 7 sent to /usr/bin/php[php:31710]
uid/euid:0/0 gid/egid:0/0, parent /bin/bash[sh:8963] uid/euid:0/0
gid/egid:0/0
Feb 20 17:48:41 server kernel: grsec: From 87.219.205.218: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:11897]
uid/euid:48/48 gid/e
gid:48/48, parent /usr/sbin/httpd[httpd:8152] uid/euid:48/48 gid/egid:48/48
Feb 20 17:51:04 server kernel: grsec: From 85.58.139.135: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:28508]
uid/euid:48/48 gid/eg
id:48/48, parent /usr/sbin/httpd[httpd:19918] uid/euid:48/48 gid/egid:48/48
Feb 20 17:51:58 server kernel: grsec: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:15615]
uid/euid:48/48 gid/egid:48/48, parent /us
r/sbin/httpd[httpd:2482] uid/euid:48/48 gid/egid:48/48
Feb 20 17:52:08 server kernel: grsec: From 166.114.104.42: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:4662]
uid/euid:48/48 gid/eg
id:48/48, parent /usr/sbin/httpd[httpd:24468] uid/euid:48/48 gid/egid:48/48
Feb 20 17:52:38 server kernel: grsec: From 189.175.50.103: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:12497]
uid/euid:48/48 gid/e
gid:48/48, parent /usr/sbin/httpd[httpd:32213] uid/euid:48/48 gid/egid:48/48
Feb 20 17:54:32 server kernel: grsec: From 83.53.142.7: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:18556]
uid/euid:48/48 gid/egid
:48/48, parent /usr/sbin/httpd[httpd:22809] uid/euid:48/48 gid/egid:48/48
Feb 20 17:55:04 server kernel: grsec: signal 7 sent to /usr/bin/php[php:29694]
uid/euid:502/502 gid/egid:502/502, parent /bin/bash[sh:30003]
uid/euid:502/502 gid
/egid:502/502
Feb 20 18:00:54 server kernel: grsec: From 189.141.26.82: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:10817]
uid/euid:48/48 gid/eg
id:48/48, parent /usr/sbin/httpd[httpd:13549] uid/euid:48/48 gid/egid:48/48
Feb 20 18:01:07 server kernel: grsec: signal 7 sent to /usr/bin/php[php:20901]
uid/euid:0/0 gid/egid:0/0, parent /bin/bash[sh:12242] uid/euid:0/0
gid/egid:0/0
Feb 20 18:03:06 server kernel: grsec: signal 7 sent to /usr/bin/php[php:9696]
uid/euid:502/502 gid/egid:502/502, parent /bin/bash[sh:23721]
uid/euid:502/502 gid/
egid:502/502
Feb 20 18:03:29 server kernel: grsec: From 68.26.197.159: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:917]
uid/euid:48/48 gid/egid
:48/48, parent /usr/sbin/httpd[httpd:20771] uid/euid:48/48 gid/egid:48/48
Feb 20 18:04:43 server kernel: grsec: From 87.219.88.132: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:10750]
uid/euid:48/48 gid/eg
id:48/48, parent /usr/sbin/httpd[httpd:4130] uid/euid:48/48 gid/egid:48/48
Feb 20 18:05:04 server kernel: grsec: From 189.167.128.26: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:14515]
uid/euid:48/48 gid/e
gid:48/48, parent /usr/sbin/httpd[httpd:2598] uid/euid:48/48 gid/egid:48/48
Feb 20 18:07:05 server kernel: grsec: signal 7 sent to /usr/bin/php[php:29589]
uid/euid:0/0 gid/egid:0/0, parent /bin/bash[sh:7958] uid/euid:0/0
gid/egid:0/0
Feb 20 18:08:31 server kernel: grsec: From 88.64.181.89: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:15335]
uid/euid:48/48 gid/egi
d:48/48, parent /usr/sbin/httpd[httpd:27788] uid/euid:48/48 gid/egid:48/48
Feb 20 18:08:43 server kernel: grsec: From 201.244.116.46: signal 11 sent
to /usr/www/htdocs/mywebsite.com_cgi/script/out.cgi[out.cgi:15217]
uid/euid:48/48 gid/e
gid:48/48, parent /usr/sbin/httpd[httpd:29545] uid/euid:48/48 gid/egid:48/48
Feb 20 18:17:34 server syslogd x.x.x: restart.
Feb 20 18:17:34 server syslog: Iniciaci� de syslogd succeeded
Feb 20 18:17:34 server kernel: klogd x.x.x, log source = /proc/kmsg started.
Feb 20 18:17:34 server kernel: Linux version 2.x.xxgrs-bipiv-ipv4
(root@kernel.myserver.net) (gcc version xxxx) #1 SMP Tue Jan 31 17:34:40 CET 2006
Feb 20 18:17:34 server kernel: BIOS-provided physical RAM map:
Feb 20 18:17:34 server kernel: BIOS-e820: 0000000000000000 - 000000000009c400
(usable)
Feb 20 18:17:34 server kernel: BIOS-e820: 000000000009c400 - 00000000000a0000
(reserved)
Feb 20 18:17:34 server kernel: BIOS-e820: 00000000000ea070 - 0000000000100000
(reserved)
Feb 20 18:17:34 server kernel: BIOS-e820: 0000000000100000 - 000000007
Bold date are ( I think ) the crash, and the system booting...
Any ideas about what can be causing the crash.. ? Is this kernel compiled with GRSecurity ? may that affect cgis ?
This is a fedora core server, xeon 3.2 GHZ x 4 procs using about 25 MBits per day.
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Feb 15, 2007
My server just went down for the third time in 3 days. I have the following log entry just prior to the crash and I need some help with identifying the problem as I do not understand the information.
Feb 16 09:52:13 server kernel: loop: loaded (max 8 devices)
Feb 16 09:52:16 server kernel: kjournald starting. Commit interval 5 seconds
Feb 16 09:52:16 server kernel: EXT3-fs warning: checktime reached, running e2fsck is recommended
Feb 16 09:52:16 server kernel: EXT3 FS 2.4-0.9.19, 19 August 2002 on loop(7,0), internal journal
Feb 16 09:52:16 server kernel: EXT3-fs: loop(7,0): 4 orphan inodes deleted
Feb 16 09:52:16 server kernel: EXT3-fs: recovery complete.
Feb 16 09:52:16 server kernel: EXT3-fs: mounted filesystem with ordered data mod e.
Feb 16 09:52:47 server lsb_log_message: failed
Feb 16 09:56:17 server kernel: ** SSH ** IN=eth0 OUT= MAC=00:12:3f:24:d5:d4:00:1
4:f2:c7:f1:80:08:00 SRC=58.163.33.202 DST=147.202.65.34 LEN=44 TOS=0x04 PREC=0x0
0 TTL=236 ID=63692 DF PROTO=TCP SPT=1765 DPT=22 WINDOW=16000 RES=0x00 SYN URGP=0
I have centos 4 / cpanel
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Oct 11, 2007
I have a VPS from mediatemple.net, and I'm not sure what is going on, but Apache has stopped running every day in the morning and it just stopped running about 2 hours ago and I didn't catch it until now
From the error log, i'm showing:
Quote:
[emerg] (12)Cannot allocate memory: couldn't grab the accept mutex
[alert] Child 3208 returned a Fatal error.../nApache is exciting!
[emerg] (43)Identifier removed: couldn't grab the accept mutex
[emerg] (43)Identifier removed: couldn't grab the accept mutex
[emerg] (43)Identifier removed: couldn't grab the accept mutex
[emerg] (43)Identifier removed: couldn't grab the accept mutex
[emerg] (43)Identifier removed: couldn't grab the accept mutex
[emerg] (43)Identifier removed: couldn't grab the accept mutex
[emerg] (43)Identifier removed: couldn't grab the accept mutex
[emerg] (22)Invalid argument: couldn't release the accept mutex
[emerg] (22)Invalid argument: couldn't release the accept mutex
Any ideas what might be causing this? just came home and my site was down again, and I've lost 15,000 pageviews already today.
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May 5, 2009
I've recently had problems where customers will upload PHP scripts that seem to use alot of CPU. I've got PRM installed but when a PHP script uses a lot of CPU, it doesn't seem to kill the processes or do anything to stop it crashing the server. I've checked the logs of PRM and it does kill some processes that use a lot of CPU/RAM though...
The ideal solution would be for PRM or something else to stop people being able to access the script causing excessive CPU/RAM usage. Even suspending for the reason of using excessive CPU/RAM would be sufficient.
For those interested the OS is CentOS 5.3 with cPanel 11, Apache and the latest PHP 5. Average load is always between 0.50 - 1.90.
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Nov 18, 2008
My server had been crashing for while with Blue Screen of Death (BSOD) and bug check error code as Stop 0x00000050 PAGE_FAULT_IN_NONPAGED_AREA.
It would literally stop by business till I reboot it again.
So I tried pull up all information I could get and fix this.
Here is what I found-
Possible causes:
A faulty driver recently installed
Faulty RAM
Antivirus
Corrupted NTFS file system
I checked the system logs and found errors related to NTFS. Well, my disk needed a chkdsk /r /f to fix this.
Ran it at the command prompt and since it required a reboot to fix on the system drive (C:), had to reboot. Came back successfully.
It has been 14 days and it has not recurred.
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Nov 18, 2008
My server had been crashing for while with Blue Screen of Death (BSOD) and bug check error code as Stop 0x00000050 PAGE_FAULT_IN_NONPAGED_AREA.It would literally stop by business till I reboot it again.So I tried pull up all information I could get and fix this.
Here is what I found-Possible causes:A faulty driver recently installed
Faulty RAM
Antivirus
Corrupted NTFS file system
I checked the system logs and found errors related to NTFS. Well, my disk needed a chkdsk /r /f to fix this.Ran it at the command prompt and since it required a reboot to fix on the system drive (C, had to reboot. Came back successfully.It has been 14 days and it has not recurred.
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Dec 4, 2008
I have a VPS , I recently upgraded because the server kept crashing due to lack of memory. I actually upgraded about two hours ago and the damn thing crashed again!
I went into virtuozzo and it said I had 12 mb of memory left.
So I restarted the container, the site loads faster than ever, and says I have 16% of memory left
So when I restart the container it resets?
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Sep 1, 2008
Assuming a linux server / apache / php / mysql setup
I'm wondering 1) how you can find out which php script is causing problems, i assume infinite looping, crashing a server and 2) are there any measures you can take (maybe in the php or apache configuration) that can prevent such a thing from happening in the first place, other than writing good code obviously?
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Dec 27, 2007
Our new server crashes about every 30',causing high high load(80!)
After mysql restart,everything its ok.
System:
Dual Core @ 3Ghz
1GB Ram
Sata Drives
Centos 5
---
My.Cnf config:
--
Code:
[mysqld]
socket = /var/lib/mysql/mysql.sock
safe-show-database
old-password=1
max_connections=500
interactive_timeout=100
wait_timeout=30
connect_timeout=30
thread_cache_size=8
key_buffer=32M
join_buffer=8M
max_allowed_packet=32M
table_cache=1024
sort_buffer=32M
record_buffer=8M
thread_cache_size=128
max_user_connections=30
thread_concurrency=4
myisam_sort_buffer_size=64M
query_cache_limit=2M
query_cache_size=32M
query_cache_type=1
old-passwords = 1
[safe_mysqld]
err-log=/var/log/mysqld.log
open_files_limit=8192
[mysqldump]
quick
max_allowed_packet=32M
[mysql]
no-auto-rehash
# Remove the next comment character if you are not familiar with SQL
#safe-updates
[isamchk]
key_buffer=64M
sort_buffer=64M
read_buffer=16M
write_bufer=16M
[myisamchk]
key_buffer=64M
sort_buffer=64M
read_buffer=16M
write_buffer=16M
[mysqlhotcopy]
interactive-timeout
----
Top Process,showing in whm and status2k:
--
/usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/server3.zaxihosting.com.pid --skip-external-locking --socket=/var/lib/mysql/mysql.sock
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Apr 30, 2012
I am trying to encrypt my session using the following directive
Session On
SessionCookieName session path=/
SessionCryptoPassPhrase sec
We are using form based authentication.
use of SessionCryptoPassPhrase crashes the server. If I dont use that directive it does not encrypt and works fine.
I see this error in application event log
Faulting application httpd.exe, version 2.4.2.0, faulting module libaprutil-1.dll, version 1.4.1.0, fault address 0x00002f14.
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May 12, 2015
it's starting to kill child processes and eventually stops/hangs.
#plesk version
Product version: 12.0.18 Update #45
Update date: 2015/05/08 03:13
Build date: 2015/01/26 15:00
Build target: CentOS 7
Revision: 334346
Architecture: 64-bit
Wrapper version: 1.2
#free -m
total used free shared buff/cache available
Mem: 3782 647 2281 45 854 2875
Swap: 2047 0 2047
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Jun 21, 2009
I have a VPS with following features: Dual Xeon, 512MB Ram (up to 1GB), CentOS.
Unfortunately MySQL is frequently down, about once per day, and it takes time to set up again. to change mysql config to resolve this issue?
my.cnf:
PHP Code:
[mysqld]
skip-bdb
max_connections = 250
max_user_connections = 30
thread_concurrency = 1
key_buffer = 128M
myisam_sort_buffer_size = 32M
join_buffer_size = 1M
read_buffer_size = 1M
sort_buffer_size = 1M
record_buffer = 1M
max_allowed_packet = 8M
table_cache = 200
thread_cache_size = 64
wait_timeout = 10
connect_timeout = 10
interactive_timeout = 10
max_connect_errors = 10
query_cache_type = 1
query_cache_limit = 1M
query_cache_size = 8M
skip-locking
safe-show-database
#log-slow-queries = /var/log/mysqld.slow.log
#long_query_time = 2
[mysqld_safe]
open_files_limit = 8192
[mysqldump]
quick
max_allowed_packet = 16M
[myisamchk]
key_buffer = 64M
sort_buffer = 32M
read_buffer = 16M
write_buffer = 16M
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Dec 25, 2008
I have a VPS with 2GB RAM. The load is always around 0.5 - 0.7. It's Xen VPS, and I see the VPS doesn't use swap yet. However, Apache is going down frequently. Might be 3-4 times per day, and DA informs me about the downtime when trying to restart Apache.
In apache error_log, I haven't seen any special error. Just few lines like this
Quote:
[Thu Dec 25 21:53:03 2008] [warn] RSA server certificate CommonName (CN) `localhost' does NOT match server name!?
[Thu Dec 25 21:53:03 2008] [warn] RSA server certificate CommonName (CN) `localhost' does NOT match server name!?
[Thu Dec 25 21:53:03 2008] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Thu Dec 25 21:53:04 2008] [warn] RSA server certificate CommonName (CN) `localhost' does NOT match server name!?
[Thu Dec 25 21:53:04 2008] [warn] RSA server certificate CommonName (CN) `localhost' does NOT match server name!?
[Thu Dec 25 21:53:04 2008] [notice] Apache/2.2.11 (Unix) mod_ssl/2.2.11 OpenSSL/0.9.8b DAV/2 PHP/5.2.8 configured -- resuming normal operations
I wonder why Apache is going down frequently, and how to fix it?
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Jan 16, 2007
I have a cpanel server with 2GB of ram. For the last two weeks , we are experiencing problems with apache in the server. Apache goes down frequently in the server and we had to manually restart the service everytime. chkservd do nothing for a restart. I had
recompiled apache using easyapache script.
Strangely i can see some entries like the following in apache error logs
host: isc_socket_create: not enough free resources
I compiled it one more time but the errors still exist.
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Aug 19, 2014
I have a brand new A8i server from 1&1 that has crashed twice today and could only be rebooted through the 1&1 control panel (not Plesk). Out of the blue the server is not accessible from the Plesk CP and is not responding to pings. I have looked through the logs and do not see anything that stands out (I am not very Linux savvy). Is there somewhere specific that I can look that would tell me why it is locking up/crashing? I have only had the server about 2 weeks and am only running email on it (no websites besides webmail and Plesk CP). It is possible that there is a hardware issue, but I cannot have 1&1 check it until after hours tonight.
Server is an 8 core Intel Atom 2.6GHz with 8GB RAM.
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