I got this all the time on other containers, and nobody was ever able to
diagnose it. Fortunately the issue was corrected by upgrading to the
latest 2.6.18 kernel and the latest vzctl.
But the kernel fix, as well as the "fix" for the frozen containers, was
to reboot the HN. And the HN shutdown
So isn't it a global way to avoid killing the
> processes of VEs from the host?
Nope. A killall would include processes that run in containers.
--
HostGIS, Open Source solutions for the global GIS community
Greg Allensworth - SysAdmin, Programmer, GIS Person, Security
Network+ Server+ A+
When I type:
/etc/init.d/ganglia-monitor stop
On my Host physical server, it shuts down all the running "gmond"
processes both in host and in my VEs. How can I avoid this?
I don't know what ganglia is, but the issue sounds simple. my guess is
that the init script is probably doing "killall gmon
Yes. My mini-OS boots first on the system and my application currently
runs on the mini-OS.
Then you should be able to port it over. Take a "tar" of the installed
system, use it as a OpenVZ template by specifying it when you "vzctl
create" a new VE, and well... start removing what's unnecessar
Do I always need a distro to run OpenVZ ? In my case, I don't use a
distro but just kernel+initrd+my own application
Do you mean, can you run your mini-OS as a guest within a OpenVZ
container? Very probably! If your "not a distro" can boot and run on
normal hardware, you should be able to:
*
Richard Ray wrote:
That is good to know but I did not do that
The container is a vzdump restore
Oh, okay. Dunno about that one then.
How do I get the quota back in sync
Shut down the VE.
Rename or delete its quota file in /var/vzquota
Start it up. The quota will be recalculated as it start
Why is the fs 37% filled on the hardware node and 75% filled on the
container
Your quota files are out of date. A very common cause of this, would be
copying files directly into /vz/private/3251 from the HN. Copying
directly into a VE's directory will bypass the quota calculation.
For copyin
Hey there. Thanks for the tip about vzps, Thorsten.
We are still in that situation I described a few days ago, with a
container which won't stop (operation timed out). vzps shows this.
# vzps -E 84 ax
VEID PID TTY STAT TIME COMMAND
84 32226 ?Z 0:00 [init ]
Does this
how to know, wich proccess belong to wich container???
Use vzpid
Example: To see that PHP process 18798 in your top output: vzpid 18798
A lot of system load may not be visible by 'top' though, particularly
disk I/O. For this I use 'atop' which can do disk I/O, example:
atop -dl 60
It's s
Hey guys. What does this mean?
CT: 85: failed to start with err=-12
I've run it through Google, and get nothing specific: some folks
upgraded their kernel, some folks rebooted and it went away, etc. Any
advice on this?
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HostGIS, Open Source solutions for the global GIS community
Greg Allens
I found my bug report from October 2009 about not being able to stop
containers.
http://bugzilla.openvz.org/show_bug.cgi?id=1345
Back then we couldn't replicate it, and we chalked it up to "must have
already been fixed" or to issues with the VE configs, but here it is today.
Any ideas as to h
What does this mean?
CT: 85: failed to start with err=-12
I see that -12 is ENOMEM. Does this really indicate that my HN is "full"
and can't run anymore VEs?
Also, can someone explain to me the proper usage of vzmemcheck and how
to interpret its output?
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HostGIS, Open Source solutions for
It gets locked up trying to stop nfsmount. I believe
the problem is the virtual nic is down before the nfsmount tries to
stop and nfsmount waits forever to close the connection to the
server..
Interesting. No connections made here, though; no NFS or similar.
Would that apply to open listening s
Thorsten Schifferdecker wrote:
and any entries logged in kern.log/dmesg as well ?
Nope. Just the same message "CT: 85: failed to start with err=-12"
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HostGIS, Open Source solutions for the global GIS community
Greg Allensworth - SysAdmin, Programmer, GIS Person, Security
Network+ Server
What template are you using and where did you get it from?
Slackware 11 I created it myself, based on a working system.
This is the same template which we had used previously those months ago,
when we weren't able to replicate the bug.
Can you vzctl enter it?
Nope. "enter into CT 84 fai
Hey guys. I reported a bug some months ago, not being able to stop and
restart a container, getting a timeout instead. When I reported the bug
months ago, I was unable to replicate it at the time. But here it is
once again: I cannot stop or restart the VE.
This clip shows the results which I s
mattias wrote:
Only a short question
Are openvz customed to run on rhel / centos and not debian Iven if there
are packages for debian
Are you asking whether you can run OpenVZ on RHEL and CentOS? The answer
is yes.
Are you asking whether you can run RHEL and CentOS inside OpenVZ
container
SD :: Ventas wrote:
And if so close this fuck slow list
i think the only slow is you.
Oh man, I was trying not to laugh at this whole thing, now there's
coffee on my keyboard. Thanks Ventas!
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HostGIS, Open Source solutions for the global GIS community
Greg Allensworth - SysAdmin, Programm
Are the list slow?
Do you mean, are questions answered quickly? It depends; I've had a few
get same-day answers, a few get ignored. Just ask and find out.
Can i run a mailserver on a openvz vps
Absolutely. No ifs, no ands, no buts - just yes.
I meen how to no how much disc space a vm has
Good answer, Solar! Some of your ideas may apply to our own situation,
as well; we have a MySQL user causing some impact with constant queries.
Questions: Can I mount a tmpfs under my simfs? I can't mount the whole
VPS as tmpfs nor noatime, but a tmpfs under simfs sounds like a great
solution
How can I limit this VPS to avoid the high load caused by the
MySQL query.
That would depend on whether it's IO or CPU that's the scarce resource.
If it's CPU load, try the --cpuunits param to vzctl. This gives the VE a
"priority" when the CPU is otherwise maxed out. Example: Give it a
weight
I just left an arpsend job running in cron every 5 minutes.
I tried that too, called it "garpd" But it didn't really help and
eventually I stopped doing it.
I've also had something like this happen when the firewall (wrongly)
had an alias that was the same as the IP of a virtual node.
Yeah
Are you using the veth or vnet drivers? If it's vnet, I don't have a
clue. I depend on IPv6 for a lot of things and vnet is not IPv6
veth
Though it's IPv4, not 6. And it's very vanilla: static IPs in all VEs,
no DHCP or SMB services at all.
Often it's very transitive. Bridges tend to
"st
It sounds like the switches they're attached to don't have the right
arp information.
Kinda what I thought, but why?
Make sure proxy_arp is enabled, the sysctl is something like:
net.ipv4.conf.eth1.proxy_arp = 1
Yep:
net.ipv4.conf.lo.proxy_arp = 0
net.ipv4.conf.all.proxy_arp = 0
net.ipv4.co
Any ideas as to what could have caused this "outage" in the first place,
and why sending a ping would have fixed it?
I can supply some further info, which may be useful.
* The bonding driver is in use, slaving eth0 and eth1 into bond0.
* There are 2 switches. eth0 goes into one and eth1 into t
Well, guys, here's a weird one. I fixed it, but you won't believe how.
I used "vzctl enter" to enter the VE, then "route -n" to see its
gateway. Then ping the gateway, and it worked; skipped 1-2 pings, but
the pings came back and the VEs were once again visible on the Internet.
Weird, huh?
T
Hey guys. I have 4 VEs, out of 13 on this server, which suddenly stopped
being networked. No pings, no HTTP, no nothing -- except from the HN
itself. The VEs cannot ping out, no DNS, nothing.
I know that no changes were made to the HN, as I'm the only one who
works on it. And it's kinda urgent
That does, indeed, sound very familiar.
I just vzcfgvalidate-d my config files and it threw up no problems or
errors. :-/
Aww, darn. My thread is here:
http://bugzilla.openvz.org/show_bug.cgi?id=1345
It's embarrassing, though a relief, that by the time I had opened the
ticket the problem neve
Unless each VM is stopped from inside it (usually using halt), stopping
the container doesn't manage to stop it most of the time, it just blocks.
Does it give a timeout? I had an issue before, where "vzctl stop XXX"
would eventually time out, leaving the VE in an unpleasant state: no
processes
To clarify further on versions:
The HN is 2.6.24 ovz009.1 on Fedora 9.
We must use 2.6.24 despite its "development" status because 2.6.18 lacks
support for AMCC/3ware RAID controllers. Aside from this shutdown issue,
we have used it for 14 months now under high loads without issue. Aside
from
the ARP caches are flushed. This can be done with
"sendarp". Otherwise the host is not reachable.
I wrote a gratuitous arp daemon (garpd) which turned out to be necessary
for our needs. If you turn down the timeout, it may be just what you
need. Want a copy?
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HostGIS, Open Source solutions
We do the firewall confguration on the HN, not in the VE. This keeps it
safely out of the customers' hands and in our centralized control.
By "safely out of their hands" I mean not only the customers'
inexpertise, but also accidental deletion/chmoding of the firewall
script in their VE, or a h
How does it work with VEs. If I install it on the VE before
cloning, will it work on the clone directly or will i need to reissue
certificate for each clone.
An invalid SSL certificate, even a self-signed or expired one, will
still "work" as far as encrypting data. If you're talking internal u
another subnet available but I can't migrate my actual VPS, is posible
that I can have some VPS with one subnet and others VPS with anothers
subnets.
Absolutely. We have 5 subnets and 4 HNs, and the combination of HNs and
IPs is entirely arbitrary. Huzzah for proxy arp, eh?
I do have some o
A question: This problem I'm getting of "err=-12" is not accompanied by
the noisy kernel dumps mentioned. Does this still sound like a likely cause?
Also, I see that the bug was not fixed:
http://bugzilla.openvz.org/show_bug.cgi?id=802
The last entry was that it worked for the person reporti
John Knight wrote:
To fix this issue, recompile your kernel with this option commented out:
#CONFIG_FAIR_USER_SCHED
#CONFIG_FAIR_GROUP_SCHED
Thanks a lot for the same-day response, John. I think I can use this
tonight on one of our test systems.
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HostGIS, Open Source solutions for the glob
I am having a problem creating and starting a new VE.
vzctl start gives me: mounted, container start failed, unmounting.
dmesg shows only this:
CT: 30: stopped
CT: 30: failed to start with err=-12
The verbose log (level 10) is no more useful to me:
Starting container ...
Running: /usr/sbin/vzq
Please file the appropriate bug to http://bugzilla.openvz.org/. Please
set severity to "enhancement" and don't use the word ASAP :)
Nicely done, Kir! Spoken like a true open-source man. :)
--
HostGIS, Open Source solutions for the global GIS community
Greg Allensworth - SysAdmin, Programmer, GI
If you don't trust the root user of your host node, I think you are in trouble.
For me, it's not about trust but logging and completeness. I trust
myself and our security, but having a more complete log of when the
sysadmin stepped in would help our own auditing processes.
I hope that it w
Am I missing some step? Maybe another EXTERNAL_SCRIPT to initialize the
ip/routes?
Yeppers.
http://wiki.openvz.org/Veth#Making_a_veth-device_persistent
--
HostGIS, Open Source solutions for the global GIS community
Greg Allensworth - SysAdmin, Programmer, GIS Person, Security
Network+ Serve
in my opinion this may be something other than
openvz, may be a misconfigured switch (or switch's arp table size?) or
router or a different configuration option in switch/router.
Yeah, it's so hard to tell. We're using unmanaged GigE switches, but
between IP blocks we bounce off the router whi
in a period of time some of my VE's (both on subnet1 and
subnet2) loses connections.
I've had a long-standing problem, as well, with HNs and VPSs randomly
losing connectivity for seconds at a time. It's been enough to set off
Nagios, to delay SMTP, etc.
My workaround (I won't call it a "solu
Hey guys. I never did get a response, and thought to ask again and to
post a status update.
My original question:
http://www.mail-archive.com/users@openvz.org/msg02202.html
I was perplexed, since both bugs which had been known to cause this
symptom have been marked as fixed for some time. I wa
mattias wrote:
I reed virtuozzo only support virtulation with the same os on the
physical computer ???
Yep, it's kernel-level virtualization. One kernel runs multiple
"containers" each of which has their own "ps" and network ports and IP
addresses. It is the same "OS" in that they
Does anyone have a formula or calculations to figure out what the
various beancounter barrier and limit for a paticular host system will
be?
One word: vzsplit
--
Gregor Mosheh / Greg AllensworthBS, A+, Network+, Security+, Server+
System Administrator, Lead Programmer
HostGIS development
Hey guys.
I'm being haunted by this terrible problem: waiting for lo to become
free. This happens when I try to shut down a VE, then the load average
skyrockets and the system grinds to a standstill until I pull the power
plug.
This was reported in 2005, and was reopened and fixed in 2008:
h
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