HyperVM: The vps xxxx.vm is locked by another user. This would also be because you had interrupted an earlier activity that would take long time to complete. HyperVM has waited 15 seconds for the other process to finish. Please try after sometime.

If you receive this error in HyperVM:

The vps xxxx.vm is locked by another user. This would also be because you had interrupted an earlier activity that would take long time to complete. HyperVM has waited 15 seconds for the other process to finish. Please try after sometime.

You can run the following command on the slave node to fix the issue:

service hypervm restart

Filed under: Uncategorized by — aaron @ 6:48 pm

yum upgrade error (openvz) on Lxlab’s HyperVM

When I try and do a yum upgrade on an HyperVM openvz node, I’m getting the following error:

Total download size: 220 M
Is this ok [y/N]: y
Downloading Packages:
http://download.lxlabs.com/download/update/centos-5/x86_64/t emp/x86_64/php-5.2.6-5.x86_64.rpm: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://download.lxlabs.com/download/update/centos-5/x86_64/t emp/x86_64/php-cli-5.2.6-5.x86_64.rpm: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://download.lxlabs.com/download/update/centos-5/x86_64/t emp/x86_64/php-common-5.2.6-5.x86_64.rpm: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.

Error Downloading Packages:
php – 5.2.6-5.x86_64: failure: temp/x86_64/php-5.2.6-5.x86_64.rpm from lxlabsupdate: [Errno 256] No more mirrors to try.
php-cli – 5.2.6-5.x86_64: failure: temp/x86_64/php-cli-5.2.6-5.x86_64.rpm from lxlabsupdate: [Errno 256] No more mirrors to try.
php-common – 5.2.6-5.x86_64: failure: temp/x86_64/php-common-5.2.6-5.x86_64.rpm from lxlabsupdate: [Errno 256] No more mirrors to try.

To fix this, you can run the following:

yum clean all

yum upgrade

Filed under: Uncategorized by — aaron @ 3:05 pm

Reset Default Lxadmin Password via commandline/backend

Sometimes when you intially setup Lxadmin, you can have problems resetting it from default.  To get around this can you can do the following:

1. Login via SSH to your VPS.

2. Run:

cd /usr/local/lxlabs/lxadmin/httpdocs

3. Then run:

/usr/bin/lphp.exe  ../bin/common/resetpassword.php master <your-new-password>

Filed under: Uncategorized by — aaron @ 2:39 am

lxadmin Error: sh: vgdisplay: command not found

Lxadmin Error:

sh: vgdisplay: command not found

If you are receiving this, its probably due to the hostname being set to something which is causing a problem, so do the following to fix:

hostname temp.domain.com
cd /usr/local/lxlabs/lxadmin/httpdocs/
lphp.exe ../bin/update.php

Filed under: Uncategorized by — aaron @ 2:07 am

Reset lxadmin password

To reset the LXADMIN password, do the following steps:

1. First you want to restart lxadmin service from the back end.

/etc/init.d/lxadmin restart

2. Now go to the password reset page, and give the new password. Click update all.

If LXADMIN is not restarted before changing the password, it won’t get reset.

Filed under: Uncategorized by — aaron @ 8:59 pm

Xen Bug: xen_net: Memory squeeze in netback driver (32bit PAE)

If you are receiving the following error in your logs while running a 32bit PAE Xen Kernel:

xen_net: Memory squeeze in netback driver

Then you need to do the following:

1. In your grub.conf (or other bootloader) set the Dom0 to a fixed size: dom0_mem=1024.

2. In /etc/xen/xend-config.sxp set dom0-min-mem to the same size as above.

3. Reboot

Basically what you are doing is ensuring that Dom0 will not be decreased in size, as when this happens it causes problems the the xen_net driver which can in turn cause network connectivity problems with your DomUs.

Filed under: Uncategorized by — aaron @ 10:10 pm

Upgrading DomU Kernel HyperVM/Xen

First install both the Dom0 and DomU kernel by doing a yum upgrade.  Once you have done this, reboot the server into the new Dom0 kernel and run the following command (before you start each VPS on the server):

cd /usr/local/lxlabs/hypervm/httpdocs/; lphp.exe ../bin/misc/fixcentos5xen.php

Filed under: Uncategorized by — aaron @ 9:42 pm

lxadmin password not applying in HyperVM

If you get the following error in lxadmin when running HyperVM run the the command “/script/upcp” , reboot the VPS and try once again

“lxadmin  Your password is now set as a generic password which constitutes a grave security threat. Please change it immediately by  clicking here.”

Filed under: Uncategorized by — ijan @ 8:56 pm

Custom Kernel per VPS in HyperVM

To use a customer kernel per VPS in HyperVM, copy (or link) the kernel to  /boot/hypervm-xen-vmlinuz-vps.vm where vps is the name of the VPS.

Filed under: Uncategorized by — aaron @ 8:21 pm

HyperVM: cannot restore segment prot after reloc: Permission denied

Error:

Failed loading /usr/local/lxlabs/ext/lib/Zend/lib/Optimizer-2.5.7/php-5.2.x/ZendOptimizer.so:  /usr/local/lxlabs/ext/lib/Zend/lib/Optimizer-2.5.7/php-5.2.x/ZendOptimizer.so: cannot restore segment prot after reloc: Permission denied
Zend
2004072203214624464xù

Solution:

If you are receiving this error while installing HyperVM, then you need to disable selinux.  This can be done by changing it to disabled in /etc/selinux

Filed under: Uncategorized by — aaron @ 1:53 am