Packet Loss :: Server Kernel: Printk: 59 Messages Suppressed
Jun 10, 2008
root@server [~]# tail -f /var/log/messages
Jun 10 14:14:49 server kernel: printk: 56 messages suppressed.
Jun 10 14:14:49 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:14:54 server kernel: printk: 59 messages suppressed.
Jun 10 14:14:54 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:14:59 server kernel: printk: 85 messages suppressed.
Jun 10 14:14:59 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:04 server kernel: printk: 90 messages suppressed.
Jun 10 14:15:04 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:09 server kernel: printk: 58 messages suppressed.
Jun 10 14:15:09 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:14 server kernel: printk: 70 messages suppressed.
Jun 10 14:15:14 server kernel: ip_conntrack: table full, dropping packet.
Jun 10 14:15:19 server kernel: printk: 193 messages suppressed.
Jun 10 14:15:19 server kernel: ip_conntrack: table full, dropping packet.
Anyone know what this is about?
Using Centos / Cpanel
Linux server.domain.com 2.6.9-67.0.15.ELsmp #1 SMP Thu May 8 10:52:19 EDT 2008 i686 i686 i386 GNU/Linux
root@server [~]# sysctl net.ipv4.netfilter.ip_conntrack_max
net.ipv4.netfilter.ip_conntrack_max = 65536
I ran this in the meantime.
sysctl -w net.ipv4.netfilter.ip_conntrack_max=72000
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May 17, 2009
I have a home CentOS server and here is my issue
When I try to connect to it via SSH its laggy and often times out. I also notice packet loss.
My home network is 100 Mbps and the router is a crappy netgear WPN824 V3
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Aug 1, 2009
I am facing high ping and packet loss issues with a server hosted at hetzner.de (CentOS + WHM)
For some unknown reason pings go high and stay like this (average 1500ms) until I reboot the server.
Here is a screenshot of tracert from server to me: [url]
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Mar 15, 2007
I am noticing some packet loss on one of my boxes, most notably when i'm accessing the webmail (however i'm pretty sure it's not that)
Can anyone offer some tips as to how to nail this down?
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Dec 23, 2007
I have a dedicated windows 2003 server at a colocation facility that i use for game server hosting. Over the past 7 months, packet loss has become horrible with random periods of massive lag. My host says it's something on my end. I use a firewall with SPI enabled. Could that be causing it?
Strange thing is, the first few months my server was at that colo, they only had around 40 other servers on a single OC-192 pipe and i never had packet loss despite having the same SPI firewall. But now they have over 300 servers on the same OC-192 pipe. Could the packet loss be caused by my SPI firewall or them overloading the network with servers?
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Jun 10, 2009
Basically I registered with a new host. They sent me the details with obviously includes the IP address. I tested the IP address on just-ping.com and it came back with all of them having between 80% to 100% packet loss. Surely this is not normal is it? I havent moved my domain yet but it doesnt look good does it? Should I cancel?
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Jul 11, 2008
Anyone else experiencing packet loss with a GoDaddy VDS?
I'm in the 208.109.93 subnet.
--- google.com ping statistics ---
200 packets transmitted, 53 received, 73% packet loss, time 199086ms
rtt min/avg/max/mdev = 41.970/42.813/46.022/0.994 ms
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Dec 11, 2007
with two 3com 3870 switches.
Our setup looks like this
Computer A (GigE) Switch 1 (gigE) Media Converter (Fiber Run) Media Converter (gigE) Switch 2 (gigE) Computer B
We have a cross connect in our data center that uses media converters (fiber) to regular 1000FD on each end.
Each end of the 1000FD handoff is plugged into port 1 of the 3870's (switch 1 and switch 2).
Pinging from Computer A to Computer B we receive a 50% packet loss.
Pinging from Computer B to Switch 1, no packet loss.
Pinging from Computer A to Switch 2, 50% packet loss.
Looking in the interface, the port 1's on each switch auto negotiate to 1000FD, however flow control shows as off.
We asked our data center to run tests on the media converts and fiber runs and everything comes back 100% fine. Has anyone seen a weird issue like this before with 3com switches not playing nicely with media converters?
I have no clue whats going on and our data center said the fiber run/media converter is fine... [url]
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Jul 9, 2007
I have smokeping monitoring my game servers and so far in the little time that it has been running all my game servers have been encountering an average of 4 to 10% packet loss. Are there are tweaks i can run on the server computer to reduce packet loss? (registry modifications, etc.)
I downloaded a TCP tweak program called "TCP Optimizer" is it safe to run on a Windows 2003 Server OS?
The colo connection is an OC 192 and i have a 100Mbit ethernet card.
Here are my current TCP settings:
Quote:
[SYSTEMCurrentControlSetServicesTcpipParameters]
TcpWindowSize=-1
GlobalMaxTcpWindowSize=-1
EnablePMTUDiscovery=-1
EnablePMTUBHDetect=-1
SackOpts=-1
DefaultTTL=-1
TcpMaxDupAcks=-1
Tcp1323Opts=-1
DisableUserTOSSetting=-1
DefaultTOSValue=-1
[SYSTEMCurrentControlSetServicesAfdParameters]
DefaultReceiveWindow=-1
[SoftwareMicrosoftWindowsCurrentVersionInternet Settings]
MaxConnectionsPerServer=-1
MaxConnectionsPer1_0Server=-1
[SYSTEMCurrentControlSetServicesICSharingSettingsGeneral]
InternetMTU=-1
[SOFTWAREMicrosoftWindowsCurrentVersionExplorerRemoteComputerNameSpace{D6277990-4C6A-11CF-8D87-00AA0060F5BF}]
{D6277990-4C6A-11CF-8D87-00AA0060F5BF}=-1
[SYSTEMCurrentControlSetServicesDnscacheParameters]
MaxNegativeCacheTtl=-1
NegativeCacheTime=-1
NetFailureCacheTime=-1
NegativeSOACacheTime=-1
[SOFTWAREPoliciesMicrosoftWindowsPsched]
NonBestEffortLimit=-5
[SYSTEMCurrentControlSetServicesTcpipServiceProvider]
LocalPriority=499
HostsPriority=500
DnsPriority=2000
NetbtPriority=2001
[SystemCurrentControlSetServicesLanmanServerParameters]
SizReqBuf=-1
[SYSTEMCurrentControlSetServicesNdisWanParametersProtocols]
ProtocolMTU=-2
[SYSTEMCurrentControlSetServicesTcpipParametersInterfaces{D63AC0FA-D2C9-4D83-B057-31A353516AB3}]
MTU=-1
TcpWindowSize=-1
[SYSTEMCurrentControlSetServicesPschedParametersAdapters{D63AC0FA-D2C9-4D83-B057-31A353516AB3}]
NonBestEffortLimit=-2
[SYSTEMCurrentControlSetServicesTcpipParametersInterfaces{8190D94A-3B2D-45C4-998D-312E99D6061D}]
MTU=-1
TcpWindowSize=-1
[SYSTEMCurrentControlSetServicesPschedParametersAdapters{8190D94A-3B2D-45C4-998D-312E99D6061D}]
NonBestEffortLimit=-2
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Nov 3, 2007
Recently I have been having this problem with two high traffic servers on two different network.
Both servers are Quad-Core Xeons with CentOS 4.5 x86_64 and they are on 100mbps full duplex network. Software configuration is Nginx+Apache+MYSQL control panel is Directadmin.
The servers are serving lots static files and some php scripts.
When the servers start push near or over 30mbps, there will be packet loss when I ping them. around 5% loss, push more bandwidth the more packet loss. I have checked all the log files, I don't see any unusual errors.
Server Load is fine. The NICs were on 100mbps full-duplex mode.
The datacenters claim the networks were fine and all the other servers running on the same switches were fine with no packet loss.
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Mar 19, 2007
I'm trying to find out why a single interface is causing packet loss on my entire network.
The network consists of four 2924's trunked to a 3550. I have about 20 vlans and a single default route for all traffic my uplink.
The network is perfect until I enable a single server. After I issue a 'no shut' on the interface packet loss is anywhere from 5% to 20% for anything going through the 3550 or even pings from the 3550 to other switches or the uplink.
Here's the statistics/settings of the interface after 1 minute of activity:
Code:
interface FastEthernet0/1
description 228
switchport access vlan 58
switchport mode dynamic desirable
speed 100
duplex full
spanning-tree portfast
FastEthernet0/1 is up, line protocol is up (connected)
Hardware is Fast Ethernet, address is 0014.f2e6.df01 (bia 0014.f2e6.df01)
Description: 228
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 6/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100BaseTX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters 00:01:01
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 2536000 bits/sec, 924 packets/sec
5 minute output rate 341000 bits/sec, 469 packets/sec
60922 packets input, 21630544 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 2 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
31585 packets output, 2859788 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
Transmit FastEthernet0/1 Receive
3583183 Bytes 27018085 Bytes
39516 Unicast frames 76403 Unicast frames
46 Multicast frames 0 Multicast frames
0 Broadcast frames 0 Broadcast frames
0 Discarded frames 0 No dest, unicast
0 Too old frames 0 No dest, multicast
0 Deferred frames 0 No dest, broadcast
0 1 collision frames
0 2 collision frames 0 FCS errors
0 3 collision frames 0 Oversize frames
0 4 collision frames 0 Undersize frames
0 5 collision frames 0 Collision fragments
0 6 collision frames
0 7 collision frames 4355 Minimum size frames
0 8 collision frames 56237 65 to 127 byte frames
0 9 collision frames 1205 128 to 255 byte frames
0 10 collision frames 14 256 to 511 byte frames
0 11 collision frames 67 512 to 1023 byte frames
0 12 collision frames 14528 1024 to 1518 byte frames
0 13 collision frames
0 14 collision frames 0 Flooded frames
0 15 collision frames 3 Overrun frames
0 Excessive collisions 0 VLAN filtered frames
0 Late collisions 0 Source routed frames
0 Good (1 coll) frames 0 Valid oversize frames
0 Good(>1 coll) frames 0 Pause frames
0 Pause frames 0 Symbol error frames
0 VLAN discard frames 0 Invalid frames, too large
0 Excess defer frames 0 Valid frames, too large
0 Too large frames 0 Invalid frames, too small
3672 64 byte frames 0 Valid frames, too small
34066 127 byte frames
2152 255 byte frames
110 511 byte frames
38 1023 byte frames
28 1518 byte frames
CPU utilization for five seconds: 13%/3%; one minute: 12%; five minutes: 9%
77 1317620 3220725 409 9.27% 8.35% 6.20% 0 IP Input
How does 1400 packets/second (4mbits) cause my 3550 to drop packets?
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Jul 6, 2008
a tool that can measure how much packet loss we are having on a given server by looking at the packets being sent from it. I.e, something than looks at all TCP/80 connections and measures how many packets and bytes are being retransmitted vs actual packets and bytes sent.
This documents explains it:
[url]
We need this to measure network performance of different hosts where we have dedicated servers. This would be a good way of measuring performance with the actual data of our users.
Does anyone know of such tool? I.e, something that can say
2532 packets/second - 132 retransmits/second (4.8%)
25.43Mbps/sec total traffic - 24.84 Mbps/sec actual data sent - 0.59Mbps retransmits
Even better if it can then break it out on IP prefixes. like
192.0/16: 0.2% retransmits
192.1/16: 3.2% retransmits
192.2.16: 0.3% retransmits
192.3/16: 22.5% retransmits
192.4/16: 0.3% retransmits
This would be a good indicator of connectivity between the host where the tests are ran and other specific hosts.
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Mar 8, 2008
I recently switched over to SoftLayer for dedicated hosting and the servers are great. However we've been getting hit on and off with massive (50-80%) packet loss, which has been crippling our performance and causing all sorts of problems
I put in a support ticket and they linked me to the Internet Health Report website and said it was due to one of their bandwidth providers (I think Global CrossinG) and not on their internal network and to be patient as it could take time to resolve
Are any other SoftLayer customers going through this? Is this an unusual occurrence? I feel like if it was really one of their partners that it would be affecting a lot of their customers and it would be a high priority issue right?
I'm kind of stuck on what to do; I just invested a lot of energy into moving content onto these new servers and am concerned about whether to wait it out or whether to start finding a new company. This kind of packet loss is really unacceptable...
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Feb 6, 2007
I have just noticed that for several days I'm constantly receiving these infos in /var/log/messages. I haven't done anything that would invoke them. How can I disable these messages? Are they anything to worry about?
Code:
Feb 6 14:28:18 server kernel: [<c014f600>] find_extend_vma+0x12/0x4f
Feb 6 14:28:18 server kernel: [<c0134383>] get_futex_key+0x39/0x108
Feb 6 14:28:18 server kernel: [<c011d305>] finish_task_switch+0x30/0x66
Feb 6 14:28:18 server kernel: [<c02cf618>] schedule+0x844/0x87a
Feb 6 14:28:18 server kernel: [<c027734b>] sys_socketcall+0x1df/0x1fb
Feb 6 14:28:18 server kernel: [<c0125bc5>] sys_gettimeofday+0x53/0xac
Feb 6 14:28:18 server kernel: [<c02d137f>] syscall_call+0x7/0xb
Feb 6 14:28:18 server kernel: [<c02d007b>] _read_lock_irq+0x4/0x1e
Feb 6 14:28:18 server kernel: Badness in dst_release at include/net/dst.h:149
Feb 6 14:28:18 server kernel: [<f8d8a555>] ip6_push_pending_frames+0x340/0x369 [ipv6]
Feb 6 14:28:18 server kernel: [<f8d9883f>] udp_v6_push_pending_frames+0x169/0x185 [ipv6]Badness in dst_release at include/net/dst.h:149
Feb 6 14:28:18 server kernel: [<c0278fa8>]
Feb 6 14:28:18 server kernel: [<f8d98e7d>] udpv6_sendmsg+0x622/0x770 [ipv6]
Feb 6 14:28:18 server kernel: [<c027a498>] __kfree_skb+0x55/0xf7
Feb 6 14:28:18 server kernel: [<c027e1b8>] skb_dequeue+0x40/0x46
Feb 6 14:28:18 server kernel: [<c027b009>] net_tx_action+0x60/0xfc
Feb 6 14:28:18 server kernel: [<c0126354>] skb_recv_datagram+0x61/0x9b
Feb 6 14:28:18 server kernel: [<c02b1ed7>] __do_softirq+0x4c/0xb1
Feb 6 14:28:18 server kernel: [<c010814b>] do_softirq+0x4f/0x56
Feb 6 14:28:18 server kernel: =======================
Feb 6 14:28:18 server kernel: [<c0107a60>] do_IRQ+0x1a2/0x1ae
Feb 6 14:28:18 server kernel: [<c02d1d3c>] udp_recvmsg+0x5f/0x271
Feb 6 14:28:18 server kernel: [<c02b7b35>] common_interrupt+0x18/0x20
Feb 6 14:28:18 server kernel: [<c02d007b>] inet_sendmsg+0x38/0x42
Feb 6 14:28:18 server kernel: [<c02757f5>] _read_lock_irq+0x4/0x1e
Feb 6 14:28:18 server kernel: sock_sendmsg+0xdb/0xf7
Feb 6 14:28:18 server kernel: [<c02757f5>] sock_sendmsg+0xdb/0xf7
Feb 6 14:28:18 server kernel: [<c011fee1>] autoremove_wake_function+0x0/0x2d
Feb 6 14:28:18 server kernel: [<c027a89e>] verify_iovec+0x76/0xc2
Feb 6 14:28:18 server kernel: [<c0276f44>] sys_sendmsg+0x1ee/0x23b
Feb 6 14:28:18 server kernel: [<c011cb7d>] activate_task+0x88/0x95
Feb 6 14:28:18 server kernel: [<c011d00a>] try_to_wake_up+0x225/0x230
Feb 6 14:28:18 server kernel: [<c011d00a>] try_to_wake_up+0x225/0x230
Feb 6 14:28:18 server kernel: [<c0170776>] inode_update_time+0x80/0x87
Feb 6 14:28:18 server kernel: [<c0164748>] pipe_writev+0x310/0x31c
Feb 6 14:28:18 server kernel: [<c02cf622>] schedule+0x84e/0x87a
Feb 6 14:28:18 server kernel: [<c027734b>] sys_socketcall+0x1df/0x1fb
Feb 6 14:28:18 server kernel: [<c0125bc5>] sys_gettimeofday+0x53/0xac
Feb 6 14:28:18 server kernel: [<c02d137f>] syscall_call+0x7/0xb
Feb 6 14:28:18 server kernel: [<c02d007b>] _read_lock_irq+0x4/0x1e
Feb 6 14:28:18 server kernel: Badness in dst_release at include/net/dst.h:149
Feb 6 14:28:18 server kernel: [<f8d98ef7>] udpv6_sendmsg+0x69c/0x770 [ipv6]
Feb 6 14:28:18 server kernel: [<c027a498>] skb_dequeue+0x40/0x46
Feb 6 14:28:18 server kernel: [<c027b009>] skb_recv_datagram+0x61/0x9b
Feb 6 14:28:18 server kernel: [<c02b1ed7>] udp_recvmsg+0x5f/0x271
Feb 6 14:28:18 server kernel: [<c02b7b35>] inet_sendmsg+0x38/0x42
Feb 6 14:28:18 server kernel: [<c02757f5>] sock_sendmsg+0xdb/0xf7
Feb 6 14:28:18 server kernel: [<c02757f5>] sock_sendmsg+0xdb/0xf7
Feb 6 14:28:18 server kernel: [<c011fee1>] autoremove_wake_function+0x0/0x2d
Feb 6 14:28:18 server kernel: [<c027a89e>] verify_iovec+0x76/0xc2
Feb 6 14:28:18 server kernel: [<c0276f44>] sys_sendmsg+0x1ee/0x23b
Feb 6 14:28:18 server kernel: [<c011cb7d>] activate_task+0x88/0x95
Feb 6 14:28:18 server kernel: [<c011d00a>] try_to_wake_up+0x225/0x230
Feb 6 14:28:18 server kernel: [<c011d00a>] try_to_wake_up+0x225/0x230
Feb 6 14:28:18 server kernel: [<c0170776>] inode_update_time+0x80/0x87
Feb 6 14:28:18 server kernel: [<c0164748>] pipe_writev+0x310/0x31c
Feb 6 14:28:18 server kernel: [<c02cf622>] schedule+0x84e/0x87a
Feb 6 14:28:18 server kernel: [<c027734b>] sys_socketcall+0x1df/0x1fb
Feb 6 14:28:18 server kernel: [<c0125bc5>] sys_gettimeofday+0x53/0xac
Feb 6 14:28:18 server kernel: [<c02d137f>] syscall_call+0x7/0xb
Feb 6 14:28:18 server kernel: [<c02d007b>] _read_lock_irq+0x4/0x1e
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Feb 7, 2007
I am getting these strange messages in the shell.
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: Call Trace:
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: <c01c2650> do_lookup+0x5a/0x78 <c01c2de3> __link_path_walk+0x775/0xbf0
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: <c019fa60> prep_new_page+0x2f/0x148 <c01c32a1> link_path_walk+0x43/0xae
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: <c01c69d7> vfs_readdir+0x5f/0x67 <c01c6e3d> sys_getdents64+0xb8/0xc3
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: <c0345252> _atomic_dec_and_lock+0x2a/0x44 <c01c36b5> do_path_lookup+0x1f6/0x241
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: <c01c3910> __user_walk_fd+0x29/0x3a <c01bedd8> sys_readlinkat+0x25/0x74
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: <c01c69d7> vfs_readdir+0x5f/0x67 <c01c6e3d> sys_getdents64+0xb8/0xc3
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: <c0345252> _atomic_dec_and_lock+0x2a/0x44 <c01bee3a> sys_readlink+0x13/0x17
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: <c01666ab> sysenter_past_esp+0x54/0x89
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: Code: 00 00 70 ee a0 d0 bc ee a0 d0 bc ed a0 d0 c4 ee a0 d0 c4 ed a0 d0 4c ee a0 d0 4c ee a0 d0 64 ba 8f d1 64 ba 8f d1 87 2f 39 34 30 <d1> 35 f6 00 0c 10 c2 00 00 00 00 00 00 00 00 36 31 38 00 65 6e
Message from syslogd@hostname at Thu Feb 8 02:08:10 2007 ...
hostname kernel: EIP: [<d0a0ee61>] 0xd0a0ee61 SS:ESP 0068:f320fe44
Is this any issues with the current kernel that i am running. Do I need to change the kernel version ( 2.6.17.6 )
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Jul 5, 2009
i have this error on my log.
what is this.
72 Time(s): BUG: recent printk recursion!
2 Time(s): Firewall: *TCP_IN Blocked* IN=venet0 OUT= <2>BUG: recent printk recursion!
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Feb 22, 2008
my server sql keeps loss db connection during 'cpbackup' in progresss.
below are my.cnf settings. can someone suggest me how to tweak to optimize?
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-locking
skip-innodb
query_cache_limit=1M
query_cache_size=128M
query_cache_type=1
max_user_connections=200
max_connections=500
interactive_timeout=10
wait_timeout=20
connect_timeout=20
thread_cache_size=128
key_buffer=512M
join_buffer=1M
max_allowed_packet=16M
table_cache=1024
record_buffer=1M
sort_buffer_size=4M
read_buffer_size=4M
max_connect_errors=10
thread_concurrency=8
myisam_sort_buffer_size=64M
server-id=1
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Apr 18, 2008
I am trying to troubleshoot messages piling up in my /var/log/messages on CentOS 5 that look like this:
Apr 18 10:04:01 sc16 kernel: printk: 3 messages suppressed.
Apr 18 10:04:06 sc16 kernel: printk: 2 messages suppressed.
Apr 18 10:04:14 sc16 kernel: printk: 3 messages suppressed.
Apr 18 10:04:17 sc16 kernel: printk: 1 messages suppressed.
Apr 18 10:04:25 sc16 kernel: printk: 3 messages suppressed.
Apr 18 10:04:31 sc16 kernel: printk: 1 messages suppressed.
Apr 18 10:04:39 sc16 kernel: printk: 2 messages suppressed.
The messages are supressed so I can't see what they are or what is causing them.
How can I disable printk supression?
I have already tried:
echo 0 > /proc/sys/kernel/printk_ratelimit_burst
echo 0 > /proc/sys/kernel/printk_ratelimit
They don't seem to disable it... Any ideas?
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Nov 18, 2007
messages such as
Apache/2.2.6 (Unix) mod_ssl/2.2.6 OpenSSL/0.9.7a FrontPage/5.0.2.2635 mod_bwlimited/1.4 mod_jk/1.2.25 mod_mono/1.2.4 mod_auth_passthrough/2.1 PHP/5.2.4
when you go to browse a folder with no index file..
is there away to remove this?
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Jan 27, 2008
I can not download messages from the server via pop3 and browsed on outlook
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Sep 8, 2007
I was checking my emails today, and have had several that have bounced back. They all returned a message like this:
Quote:
Hi. This is the qmail-send program at web1.daniel15.com.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.
<email address removed>:
167.206.4.79 does not like recipient.
Remote host said: 550 5.7.1 Your mail from IP 66.79.185.81 was rejected. We can't currently accept your message. : <email address removed>
Giving up on 167.206.4.79.
--- Below this line is a copy of the message.
Return-Path: <dansoft-[at]-dansoftaustralia.net>
Received: (qmail 32340 invoked by uid 33); 2 Sep 2007 06:31:42 +1000
To: <email address removed>
Subject: Topic reply: Arcade Pass Item and SMF Arcade Integration
X-PHP-Script: www.daniel15.com/forum/index.php for 71.197.23.33
From: "Daniel15's Forum" <dansoft[-at-]dansoftaustralia.net>
Date: Sat, 01 Sep 2007 20:31:42 -0000
Message-ID: <79f483be9135226a66980c8c97a13454-m6420@dansoftaustralia.net>
X-Mailer: SMF
Mime-Version: 1.0
Content-Type: multipart/alternative; boundary="SMF-7402f8e97dbc065a6baa62d68c0d9226"
Content-Transfer-Encoding: 7bit
[actual message omitted for clarity]
Why would the mail from my server be rejected?
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Mar 29, 2007
we have one box in hivelocity.net that has been down so many times this month that we were forced to remove links to siteuptime where we were once so proud of having a 99.7% uptime for 3 years in theplanet.
syslog shows that just before crashing, these entries were made:
kernel: kernel BUG at mm/rmap.c:479
kernel: invalid operand:0000 [#1]
dmesg also shows this:
...
Brought up 2 CPUs
zapping low mappings.
checking if image is initramfs... it is
Freeing initrd memory: 482k freed
NET: Registered protocol family 16
PCI: PCI BIOS revision 2.10 entry at 0xf9f20, last bus=1
PCI: Using configuration type 1
mtrr: v2.0 (20020519)
mtrr: your CPUs had inconsistent fixed MTRR settings
mtrr: probably your BIOS does not setup all CPUs.
mtrr: corrected configuration.
...
i've googled these messages and they point to ram problems.
hivelocity.net claims to have done diagnostics on the box and that there were no problems reported.
they said this is a result of a sys configuration problem made by us.
any ideas?
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May 20, 2009
running centos/virtuozzo 2.6.18-028stab062.3
when i configure vmware it asks at one point for kernel header files. where would i find them to match the current kernel?
i asked at parallels forums but help there is very scarce. i checked openVZ repositories and they dont yet have headers for this version.
what are my options? i have one last windows machine left and want to run it in VMware.
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Apr 29, 2007
Last year I ordered a new server with Centos 4.3 and it had the kernel kernel 2.6.9-34.0.2ELsmp installed. It runned fine and I didn't update any packages since then.
Today I started getting a problem where both mysqld and kswapd0 uses very high amounts of CPU, spiking up to 100% and my memory usage is at 99% all the time. The problem seems exactly the same as the one mentioned in this thread.
In that thread the exact same kernel is said to be insecure and to cause this problem. I also came across a centOS bug that reports this problem with high cpu, mem usage and mysql & kswapd0 consuming all resources.
In the linked thread the person solved the problem by upgrading to kernel 2.6.9-42 using rpms but others recommended a newer kernel or a custom compiled kernel for CentOS.
Apparently when they used yum it said 34.0.2 was the latest kernel.
What should I do to upgrade the kernel, which version should i upgrade to, and where do I get it from? I won't be able to compile a custom kernel and I've only installed basic rpm packages before.
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May 3, 2009
What is the best way to handle prevent data loss in the event a hard drive goes bad in a server. We have never had one go yet but I can only imagine what a server load of domains suddenly losing their databases or sites. (giving that they didn't back their stuff up).
I know one was is a RAID setup. I just wanted to hear more.
What about if you need to move everyone from one server to another due to major upgrades? Like adding more hdd space.
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Apr 26, 2008
i have two servers with whm/cpanel and centos,
i host my domain.com on server-A and create a account with subdomain sub.domain.com on server-A,
some days later,
i move the account website to server-B,
a> i change the domain of sub.domain.com to sub2.domain.com on server-A from whm,
b> and i edit the dns from whm and add a a address record to point to the server-B.
i think my setting is right and the link will run well,
but i am not sure why sometimes people can not link the sub.domain.com,
and they check do the check "ping sub.domain.com",
and they will get the ip of original server-A,
because it assail me for months and i'm not sure how to fix it completely.
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Jul 8, 2009
We cannot figure out why our dedicated server will not boot to the correct kernel. I've removed all other options from grub.conf but it's still booting to the default CentOS setup.
grub.conf:
Code:
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,0)
# kernel /boot/vmlinuz-version ro root=/dev/mapper/ddf1_4c53492020202020808627c300000000378494a900000a28p1
# initrd /boot/initrd-version.img
#boot=/dev/mapper/ddf1_4c53492020202020808627c300000000378494a900000a28
default=0
timeout=5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-028stab062.3)
root (hd0,0)
kernel /boot/vmlinux-2.6.18-028stab062.3 ro root=LABEL=/
initrd /boot/initrd-2.6.18-028stab062.3.img
Code:
uname -r
2.6.18-128.el5
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Apr 14, 2009
I got this weird issue with a server, I have even contacted some server management companies as I ran out of ideas and ran out of things to try and fix it.
Lemme explain.
The server is a core2quad q6600, with 8gb ram. 2 velociraptor 300gb on raid1.
When I set the server up I had to wait on cpanel so I first went in and compiled a grsec kernel, 2.6.24.3 to be exact. Then I installed cpanel and everything else, have done the same exact procedures with countless other servers before, nothing special.
Have had this server around 10 months. It will only run right in the 2.6.24.3-grsec kernel. When you boot another kernel it will first boot very very slow, then when the server comes up everything is very very slow. Then the load will go up to like 100 with nothing special going on in the server. It;s like its loaded down like that just with basic startup functions. You will see things like service_start processes long after startup. Cpanel takes forever to start up if it does. The server is extremely slow and unusable, you are lucky if you can edit grub.conf real quick and set the default kernel back.
It does this on every kernel...Besides the 2.6.24.3-grsec which in that case it boots right up fine and dandy. It acts like a regular server then, performs good.
So any other kernel besides the 2.6.24.3-grsec simply wont work on it. There are no logs in messages, nothing like that. I looked into things that may have been built only for the 2.6.24.3-grsec kernel but couldn't really find anything that should have made such an impact.
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Jul 2, 2008
We have experienced a serious downtime of our server due to a "Kernel Panic" problem. The server stops responding to ping requests. When we accessed the console through IPMI, we saw a "Kernel Panic" error detailed here: [url]and [url]
We are running redhat RHEL 5.1
[root@host~]# uname -a
Linux host.com 2.6.18-92.1.1.el5PAE #1 SMP Thu May 22 09:16:17 EDT 2008 i686 i686 i386 GNU/Linux
[root@host~]#
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Jan 8, 2008
on a RHE 3 system I installed a new Kernel. I did update lilo.conf and grub.conf but they are still booting an old kernel: 2.4.21-27.ELsmp. Please have a look at my files below and if you have any idea why please let me know.
lilo.conf:
prompt
timeout=50
default=2.4.21-53.ELsmp
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
message=/boot/message
linear
image=/boot/vmlinuz-2.4.21-53.ELsmp
label=2.4.21-53.ELsmp
initrd=/boot/initrd-2.4.21-53.ELsmp.img
read-only
append="root=/dev/hda3"
image=/boot/vmlinuz-2.4.21-47.ELsmp
label=2.4.21-47.ELsmp
initrd=/boot/initrd-2.4.21-47.ELsmp.img
read-only
append="root=/dev/hda3"
image=/boot/vmlinuz-2.4.21-47.EL
label=2.4.21-47.EL
initrd=/boot/initrd-2.4.21-47.EL.img
read-only
append="root=/dev/hda3"
image=/boot/vmlinuz-2.4.21-27.ELsmp
label=linux
initrd=/boot/initrd-2.4.21-27.ELsmp.img
read-only
append="root=/dev/hda3"
image=/boot/vmlinuz-2.4.21-27.EL
label=linux-up
initrd=/boot/initrd-2.4.21-27.EL.img
read-only
append="root=/dev/hda3"
grub.conf:
Code:
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Enterprise Linux ES (2.4.21-53.ELsmp)
root (hd0,0)
kernel /vmlinuz-2.4.21-53.ELsmp ro root=/dev/hda3
initrd /initrd-2.4.21-53.ELsmp.img
title Red Hat Enterprise Linux ES (2.4.21-47.ELsmp)
root (hd0,0)
kernel /vmlinuz-2.4.21-47.ELsmp ro root=/dev/hda3
initrd /initrd-2.4.21-47.ELsmp.img
title Red Hat Enterprise Linux ES (2.4.21-47.EL)
root (hd0,0)
kernel /vmlinuz-2.4.21-47.EL ro root=/dev/hda3
initrd /initrd-2.4.21-47.EL.img
title Red Hat Enterprise Linux ES (2.4.21-27.ELsmp)
root (hd0,0)
kernel /vmlinuz-2.4.21-27.ELsmp ro root=LABEL=/
initrd /initrd-2.4.21-27.ELsmp.img
title Red Hat Enterprise Linux ES-up (2.4.21-27.EL)
root (hd0,0)
kernel /vmlinuz-2.4.21-27.EL ro root=LABEL=/
initrd /initrd-2.4.21-27.EL.img
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Nov 24, 2007
I have a cpanel server which goes down with a kernel panic.
In the messages files, i could find the below lines.
The kernel in the server is 2.6.9-55.0.12.ELsmp #1 SMP
h/w is 4 cpu Dual Core AMD Opteron(tm) Processor 265
Is this a kernel bug?
If yes , how can i solve it?
=====================================================
Nov 24 06:28:35 xxx kernel: eip: c0156874
Nov 24 06:28:35 xxx kernel: ------------[ cut here ]------------
Nov 24 06:28:35 xxx kernel: kernel BUG at include/asm/spinlock.h:133!
Nov 24 06:28:35 xxx kernel: invalid operand: 0000 [#1]
Nov 24 06:28:35 xxx kernel: SMP
Nov 24 06:28:35 xxx kernel: Modules linked in: md5 ipv6 parport_pc lp parport autofs4 i2c_dev i2c_core ip_conntrack_ftp ip_conntrack iptable_mangle iptable_filter ip_tables dm_mirror dm_mod button battery ac ohci_hcd ehci_hcd shpchp k8_edac edac_mc snd_intel8x0 snd_ac97_codec snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd_page_alloc snd_mpu401_uart snd_rawmidi snd_seq_device snd soundcore tg3 ext3 jbd sata_nv 3w_xxxx sata_sil libata sd_mod scsi_mod
Nov 24 06:28:35 xxx kernel: CPU: 2
Nov 24 06:28:35 xxx kernel: EIP: 0060:[<c02d51fb>] Not tainted VLI
Nov 24 06:28:35 xxx kernel: EFLAGS: 00010216 (2.6.9-55.0.12.ELsmp)
Nov 24 06:28:35 xxx kernel: EIP is at _spin_lock+0x1c/0x34
Nov 24 06:28:35 xxx kernel: eax: c02e8cb4 ebx: c0445164 ecx: e9147e5c edx: c0156874
Nov 24 06:28:35 xxx kernel: esi: c0445160 edi: 00000007 ebp: 00000000 esp: e9147e60
Nov 24 06:28:35 xxx kernel: ds: 007b es: 007b ss: 0068
Nov 24 06:28:35 xxx kernel: Process exim (pid: 8603, threadinfo=e9147000 task=f7a25330)
Nov 24 06:28:35 xxx kernel: Stack: 00000001 c0156874 00000000 fff8b500 10000000 f4f9922c c014e3f4 098a0004
Nov 24 06:28:35 xxx kernel: 00000001 00000002 fff8b500 f2f46684 00000000 c014e4a9 00000001 10000000
Nov 24 06:28:35 xxx kernel: 098a0004 f4f9922c f2f46640 00000002 fff8b500 d726e260 098a0004 c014ede1
Nov 24 06:28:35 xxx kernel: Call Trace:
Nov 24 06:28:35 xxx kernel: [<c0156874>] valid_swaphandles+0x42/0x6d
Nov 24 06:28:35 xxx kernel: [<c014e3f4>] swapin_readahead+0x18/0x57
Nov 24 06:28:35 xxx kernel: [<c014e4a9>] do_swap_page+0x76/0x2ea
Nov 24 06:28:35 xxx kernel: [<c014ede1>] handle_mm_fault+0x116/0x193
Nov 24 06:28:35 xxx kernel: [<c011b01b>] do_page_fault+0x1ae/0x5c6
Nov 24 06:28:35 xxx kernel: [<c012052d>] autoremove_wake_function+0x0/0x2d
Nov 24 06:28:35 xxx kernel: [<c0173889>] dnotify_parent+0x1b/0x6e
Nov 24 06:28:35 xxx kernel: [<c015b56a>] vfs_read+0xda/0xe2
Nov 24 06:28:35 xxx kernel: [<c015b75b>] sys_read+0x3c/0x62
Nov 24 06:28:35 xxx kernel: [<c011ae6d>] do_page_fault+0x0/0x5c6
Nov 24 06:28:35 xxx kernel: [<c02d719f>] error_code+0x2f/0x38
Nov 24 06:28:35 xxx kernel: Code: 00 75 09 f0 81 02 00 00 00 01 30 c9 89 c8 c3 53 89 c3 81 78 04 ad 4e ad de 74 18 ff 74 24 04 68 b4 8c 2e c0 e8 f9 d6 e4 ff 58 5a <0f> 0b 85 00 15 7d 2e c0 f0 fe 0b 79 09 f3 90 80 3b 00 7e f9 eb
Nov 24 06:28:35 xxx kernel: <0>Fatal exception: panic in 5 seconds
=====================================================
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