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iptables fail in CT lastest OVZ kernel [message #33519]

Sun, 19 October 2008 23:54

locutius
Messages: 125
Registered: August 2007

Senior Member

i have a server running this kernel:

Linux host0 2.6.18-53.1.19.el5.028stab053.14PAE #1 SMP Thu May 8 21:09:32 MSD 2008 i686 i686 i386 GNU/Linux

and apf runs ok in the HN and in the CT

now i have a new box running this kernel:

Linux host1 2.6.18-92.1.1.el5.028stab057.2PAE #1 SMP Mon Jul 21 21:22:20 MSD 2008 i686 i686 i386 GNU/Linux

and apf will NOT run in the CT

iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
iptables: No chain/target/match by that name
etc

after some investigation, i tried this command:

modprobe ipt_REJECT ipt_tos ipt_TOS ipt_LOG ip_conntrack ipt_limit ipt_multiport iptable_filter iptable_mangle ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_length ipt_state iptable_nat ip_nat_ftp

and got this error:

FATAL: Error inserting ipt_REJECT (/lib/modules/2.6.18-92.1.1.el5.028stab057.2PAE/kernel/net/i pv4/netfilter/ipt_REJECT.ko): Unknown symbol in module, or unknown parameter (see dmesg)

nothing to see in dmesg

it appears there is a fault in the kernel

please advise

UPDATE:

i installed 2.6.18-53.1.19.el5.028stab053.14PAE on the new box and booted into the kernel but the problem is the same ...

... conclusion it isnt the kernel

need help plz

[Updated on: Tue, 28 October 2008 17:08]

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Re: kernel module load fail [message #33522 is a reply to message #33519]

Mon, 20 October 2008 06:21

khorenko
Messages: 533
Registered: January 2006
Location: Moscow, Russia

Senior Member

Hi.

i think you simply do not have enough iptables modules loaded.
And please, note: you cannot load kernel modules from inside a Container - it's prohibited.
So, try to load necessary modules on the Hardware Node and reboot the Container.

Hope this helps.

--
Konstantin

If your problem is solved - please, report it!
It's even more important than reporting the problem itself...

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Re: kernel module load fail [message #33544 is a reply to message #33522]

Mon, 20 October 2008 21:12

locutius
Messages: 125
Registered: August 2007

Senior Member

yes that is all understood

both installations, working and not working, are set up using this guide

http://kb.parallels.com/article_130_875_en.html

both installations, the config files are identical

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Re: kernel module load fail [message #33549 is a reply to message #33544]

Tue, 21 October 2008 15:54

khorenko
Messages: 533
Registered: January 2006
Location: Moscow, Russia

Senior Member

Can you please
1) start both nodes - with working APF (node A) and node where APF does not work (node B)
2) run APF inside a container on the node A
3) save "lsmod" output from both nodes A and B (and post it here)
4) post here Containers configs from both nodes as well as global vz configs (/etc/vz/vz.conf)
?

Thank you,
Konstantin

If your problem is solved - please, report it!
It's even more important than reporting the problem itself...

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Re: kernel module load fail [message #33588 is a reply to message #33549]

Fri, 24 October 2008 05:59

locutius
Messages: 125
Registered: August 2007

Senior Member

node A (apf working in both HN and CT)

[root]# lsmod

Module Size Used by
vzethdev 16136 0
simfs 9068 55
vzrst 139156 0
vzcpt 114596 0
tun 15872 2 vzrst,vzcpt
vzdquota 44308 55 [permanent]
xt_tcpudp 7040 219
ip_nat_ftp 7808 0
xt_state 6144 28
xt_length 6016 0
ipt_ttl 5888 0
xt_tcpmss 6272 0
ipt_TCPMSS 8064 2
iptable_mangle 8576 57
xt_multiport 7168 8
xt_limit 6656 0
ipt_LOG 10240 0
ipt_TOS 6272 28
ipt_tos 5760 0
ipt_REJECT 9344 4
iptable_nat 13316 110
iptable_filter 8576 57
ip_nat 22288 3 vzrst,ip_nat_ftp,iptable_nat
ip_conntrack 60356 61 vzrst,vzcpt,ip_nat_ftp,xt_state,iptable_nat,ip_nat
nfnetlink 10648 2 ip_nat,ip_conntrack
ip_tables 18760 3 iptable_mangle,iptable_nat,iptable_filter
x_tables 19204 14 xt_tcpudp,xt_state,xt_length,ipt_ttl,xt_tcpmss,ipt_TCPMSS,xt _multiport,xt_limit,ipt_LOG,ipt_TOS,ipt_tos,ipt_REJECT,iptab le_nat,ip_tables
autofs4 25220 2
vznetdev 21764 110
vzmon 46984 59 vzethdev,vzrst,vzcpt,vznetdev
ipv6 262048 504 vzrst,vzcpt,vzmon
vzdev 7556 4 vzethdev,vzdquota,vznetdev,vzmon
dm_mirror 28804 0
dm_multipath 21384 0
dm_mod 58776 2 dm_mirror,dm_multipath
video 19588 0
sbs 18468 0
backlight 9984 0
i2c_ec 8960 1 sbs
i2c_core 23552 1 i2c_ec
container 8320 0
button 10512 0
battery 13700 0
asus_acpi 19480 0
ac 9092 0
parport_pc 29092 0
lp 16168 0
parport 37960 2 parport_pc,lp
sg 35740 0
serio_raw 10628 0
ide_cd 39968 0
bnx2 155032 0
pcspkr 7040 0
cdrom 38048 1 ide_cd
ata_piix 18436 0
libata 116280 1 ata_piix
megaraid_sas 32048 3
sd_mod 24832 4
scsi_mod 133132 4 sg,libata,megaraid_sas,sd_mod
ext3 124424 2
jbd 61736 1 ext3
uhci_hcd 25356 0
ohci_hcd 23324 0
ehci_hcd 33036 0

/etc/sysconfig/vz-scripts/101.conf

# Configuration file generated by vzsplit for 2 VEs
# on HN with total amount of physical mem 8103 Mb
# low memory 811 Mb, swap size 10001 Mb, Max treads 8000
# Resourse commit level 0:
# Free resource distribution. Any parameters may be increased
# Primary parameters
NUMPROC="4000:4000"
AVNUMPROC="1039:1039"
NUMTCPSOCK="4000:4000"
NUMOTHERSOCK="4000:4000"
VMGUARPAGES="1244660:2147483647"

# Secondary parameters
KMEMSIZE="1073741824:1073741824"
TCPSNDBUF="11995682:28379682"
TCPRCVBUF="11995682:28379682"
OTHERSOCKBUF="5997841:22381841"
DGRAMRCVBUF="5997841:5997841"
OOMGUARPAGES="1244660:2147483647"
PRIVVMPAGES="1244660:1369126"

# Auxiliary parameters
LOCKEDPAGES="4157:4157"
SHMPAGES="124466:124466"
PHYSPAGES="0:2147483647"
NUMFILE="33248:33248"
NUMFLOCK="1000:1100"
NUMPTY="400:400"
NUMSIGINFO="1024:1024"
DCACHESIZE="18593056:19150848"
NUMIPTENT="1600:1600"
DISKSPACE="10485760:10485760"
DISKINODES="7469229:8216152"
CPUUNITS="399024"
VE_ROOT="/vz/root/$VEID"
VE_PRIVATE="/vz/private/$VEID"
OSTEMPLATE="centos-5-i386-default"
ORIGIN_SAMPLE="2split"
ONBOOT="no"
NAMESERVER="xxx.xxx.xxx.xxx"
IP_ADDRESS="xxx.xxx.xxx.xxx"
HOSTNAME="www.xxxxx.com"

/etc/vz/vz.conf

## Global parameters
VIRTUOZZO=yes
LOCKDIR=/vz/lock
DUMPDIR=/vz/dump
VE0CPUUNITS=1000

## Logging parameters
LOGGING=yes
LOGFILE=/var/log/vzctl.log
LOG_LEVEL=10
VERBOSE=0

## Disk quota parameters
DISK_QUOTA=yes
VZFASTBOOT=no

# The name of the device whose ip address will be used as source ip for VE.
# By default automatically assigned.
#VE_ROUTE_SRC_DEV="eth0"

# Controls which interfaces to send ARP requests and modify APR tables on.
NEIGHBOUR_DEVS=all

## Template parameters
TEMPLATE=/vz/template

## Defaults for VEs
VE_ROOT=/vz/root/$VEID
VE_PRIVATE=/vz/private/$VEID
CONFIGFILE="vps.basic"
DEF_OSTEMPLATE="fedora-core-4"

## Load vzwdog module
VZWDOG="no"

## IPv4 iptables kernel modules
#IPTABLES="ipt_REJECT ipt_tos ipt_limit ipt_multiport iptable_filter iptable_mangle ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_length"
IPTABLES="ipt_REJECT ipt_tos ipt_TOS ipt_LOG ip_conntrack ipt_limit ipt_multiport iptable_filter iptable_mangle ipt_TCPMSS ipt_tcpmss ipt_ttl ipt_length ipt_state iptable_nat ip_nat_ftp"

## Enable IPv6
IPV6="no"

## IPv6 ip6tables kernel modules
IP6TABLES="ip6_tables ip6table_filter ip6table_mangle ip6t_REJECT"

node B (apf working in HN but not CT)

[root]# lsmod

vzethdev 16136 0
vznetdev 21124 4
simfs 9068 2
vzrst 141844 0
vzcpt 114724 0
tun 15872 2 vzrst,vzcpt
vzmon 49804 6 vzethdev,vznetdev,vzrst,vzcpt
ip_nat_ftp 7808 0
iptable_nat 13316 4
ip_nat 22288 3 vzrst,ip_nat_ftp,iptable_nat
xt_length 6016 0
ipt_ttl 5888 0
xt_tcpmss 6272 0
ipt_LOG 10240 0
ipt_tos 5760 0
vzdquota 45204 2 [permanent]
xt_tcpudp 7040 122
xt_state 6144 16
ipt_TCPMSS 8064 1
iptable_mangle 8576 3
xt_multiport 7168 4
xt_limit 6656 6
ipt_TOS 6272 18
ipt_REJECT 9344 2
ip_conntrack 60356 8 vzrst,vzcpt,ip_nat_ftp,iptable_nat,ip_nat,xt_state
iptable_filter 8576 3
nfnetlink 10648 2 ip_nat,ip_conntrack
ip_tables 18760 3 iptable_nat,iptable_mangle,iptable_filter
x_tables 19204 14 iptable_nat,xt_length,ipt_ttl,xt_tcpmss,ipt_LOG,ipt_tos,xt_t cpudp,xt_state,ipt_TCPMSS,xt_multiport,xt_limit,ipt_TOS,ipt_ REJECT,ip_tables
ipv6 269824 25 vzrst,vzcpt,vzmon
xfrm_nalgo 13700 1 ipv6
crypto_api 11904 1 xfrm_nalgo
vzdev 7556 4 vzethdev,vznetdev,vzmon,vzdquota
dm_mirror 29188 0
dm_multipath 22024 0
dm_mod 62108 2 dm_mirror,dm_multipath
video 21640 0
sbs 18468 0
backlight 9984 1 video
i2c_ec 8960 1 sbs
i2c_core 23552 1 i2c_ec
container 8320 0
button 10512 0
battery 13700 0
asus_acpi 19480 0
ac 9092 0
parport_pc 29092 0
lp 16168 0
parport 37960 2 parport_pc,lp
sg 35868 0
ide_cd 39968 0
pcspkr 7040 0
bnx2 138780 0
i5000_edac 12416 0
edac_mc 26192 1 i5000_edac
cdrom 38048 1 ide_cd
serio_raw 10628 0
ata_piix 22276 0
libata 144700 1 ata_piix
mptsas 37512 3
mptscsih 36864 1 mptsas
mptbase 75812 2 mptsas,mptscsih
scsi_transport_sas 30464 1 mptsas
sd_mod 24832 4
scsi_mod 135180 6 sg,libata,mptsas,mptscsih,scsi_transport_sas,sd_mod
ext3 124552 2
jbd 61736 1 ext3
uhci_hcd 25356 0
ohci_hcd 23324 0
ehci_hcd 33676 0

/etc/sysconfig/vz-scripts/101.conf

# Configuration file generated by vzsplit for 2 VEs
# on HN with total amount of physical mem 2020 Mb
# low memory 872 Mb, swap size 4000 Mb, Max treads 8000
# Resourse commit level 0:
# Free resource distribution. Any parameters may be increased
# Primary parameters
NUMPROC="4000:4000"
AVNUMPROC="1117:1117"
NUMTCPSOCK="4000:4000"
NUMOTHERSOCK="4000:4000"
VMGUARPAGES="340736:2147483647"

# Secondary parameters
KMEMSIZE="91529625:100682587"
TCPSNDBUF="279131136:410203136"
TCPRCVBUF="279131136:410203136"
OTHERSOCKBUF="279131136:410203136"
DGRAMRCVBUF="279131136:410203136"
OOMGUARPAGES="340736:2147483647"
PRIVVMPAGES="255999744:255999744"

# Auxiliary parameters
LOCKEDPAGES="4469:4469"
SHMPAGES="340736:340736"
PHYSPAGES="0:2147483647"
NUMFILE="35744:35744"
NUMFLOCK="1000:1100"
NUMPTY="400:400"
NUMSIGINFO="1024:1024"
DCACHESIZE="19988877:20588544"
NUMIPTENT="200:200"
DISKSPACE="3145728:3145728"
DISKINODES="1572864:1572864"
CPUUNITS="155175"
VE_ROOT="/vz/root/$VEID"
VE_PRIVATE="/vz/private/$VEID"
OSTEMPLATE="centos-5-i386-default"
ONBOOT="yes"
NAMESERVER="xxx.xxx.xxx.xxx"
HOSTNAME="www.xxxx.com"
IP_AD ...

[ Show the rest of the message ]

[Updated on: Fri, 24 October 2008 06:34]

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Re: kernel module load fail [message #33603 is a reply to message #33588]

Fri, 24 October 2008 12:32

khorenko
Messages: 533
Registered: January 2006
Location: Moscow, Russia

Senior Member

well, i also did not see any significant difference...
Ok, let's go another way: APF is a _script_.
Could you please add at the beginning "set -x" line and start APF?
In that way you'll find a iptables command that fails.

Hope to hear from you soon...

--
Konstantin

If your problem is solved - please, report it!
It's even more important than reporting the problem itself...

[Updated on: Fri, 24 October 2008 12:33]

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Re: kernel module load fail [message #33621 is a reply to message #33603]

Sun, 26 October 2008 09:52

locutius
Messages: 125
Registered: August 2007

Senior Member

node B:

[root]# apf --start 2> apflog.txt

apflog.txt is without set -x
apflog1.txt is with set -x

everything iptables is failing

iptables is running in the CT. it is almost as if there is a problem with permissions

i have another HN to set up today. i cross my fingers for no problems

UPDATE:

i have installed OVZ on a new server node C. bad news: node C is behaving exactly the same as node B, apf will not run in a CT

i made an experiment and copied over the CT with working apf from node A to node C. when i started the previously good CT on node C then apf failed to work with all the same errors. conclusion: the problem is not in the CT config

there were other problems with node B that i did not report because i did not think were interesting. however, i see the same errors on node B and node C (both are many CT running httpd and mysqld):

1. the HN will not serve webpages longer than 24 hours before they stop. restarting the CT does not fix the problem. restarting vz service does not fix the problem. rebooting the HN solves it for another 24 hours before it stops again

2. stopping a CT on both B and C gives this error:

Message from syslogd@ at Mon Oct 27 10:08:44 2008 ...
host1 kernel: unregister_netdevice: device f5e56000 marked to leak
Message from syslogd@ at Mon Oct 27 10:08:44 2008 ...
host1 kernel: free_netdev: device venet0=f5e56000 leaked
Message from syslogd@ at Mon Oct 27 10:08:47 2008 ...
host1 kernel: unregister_netdevice: device f5e56800 marked to leak
Message from syslogd@ at Mon Oct 27 10:08:47 2008 ...
host1 kernel: free_netdev: device lo=f5e56800 leakedVE was stopped
VE is unmounted

3. stopping a CT on node C gives the broken pipe error

today i will make an experiment and stop iptables on the HN and the CT to test if the CT will serve for longer than 24 hours with iptables stopped

____________________________________________________________ ___

i appreciate the help you give. i have just completed a migration of 100+ vps from one datacentre to another, from older reliable OVZ that stays up for 6 months without intervention to new OVZ that cannot stay up for 24 hours

i am pointing the finger at the kernel

while building template cache on node C vzpkgcache failed with the error "syslog file not found" when syslogd is running

if you want me to raise bugs on any of these issues please tell me. i will work on this until a solution is found

UPDATE:

node B and C running for 4 hours with iptables disabled give the same leak error when stopping a CT. iptables is not the culprit. it is the OVZ network service causing the leak

Attachment: apflog.txt
(Size: 27.36KB, Downloaded 357 times)
Attachment: apflog1.txt
(Size: 247.84KB, Downloaded 365 times)

[Updated on: Mon, 27 October 2008 13:20]

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Re: kernel module load fail [message #33652 is a reply to message #33621]

Tue, 28 October 2008 17:17

locutius
Messages: 125
Registered: August 2007

Senior Member

the failure of iptables in the CT with the latest OVZ kernel is a major problem for this project. the CT need control, of their own iptables rules. scripting tools like apf are not easy to deploy on a per CT basis from the HN

after using OVZ for 18 months i am forced to abandon OVZ. OVZ is not fit for a production environment running latest CentOS 5 on new Dell 1950iii

i am now experimenting with VMware. i will return and update you with a comparison between OVZ and VMware

thanks for the effort Konstantin. nothing more to do, OVZ is removed from the new servers. sad day for this project

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Re: kernel module load fail [message #33659 is a reply to message #33652]

Wed, 29 October 2008 12:21

khorenko
Messages: 533
Registered: January 2006
Location: Moscow, Russia

Senior Member

locutius,

looks like you are in a bad mood at the moment. Smile

Please, do not waste nerves for these problems. Smile

Quote:

OVZ is not fit for a production environment...

And talking about this...
Look... You do want to run something in a production, right? And do it without any support of those programs you are using? Well.. i think you'll agree with me - it's a bit risky... And now you faced a problem that you cannot solve without support - that happens sometime! There are too many ways to configure incorrectly something or on the other hand - any software contains bugs or might miss some functionality you need...

i'm not going to persuade you to return back to using OVZ, but please, think about my words - this place is just a _forum_, we try to help people but really not in a priority... I'd just say - if you run some serious production system, its support is really desired (this is true for ANY system IMHO, not only OVZ), i know for sure that issues of the people that have support for VZ or OVZ (yes, you can buy support for OVZ!) are being resolved with much higher priority; and if you need some additional functionality, your request will be of course more significant.

But in any case - good luck and don't be so worried! Smile

--
Konstantin

If your problem is solved - please, report it!
It's even more important than reporting the problem itself...

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