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HOWTO Upgrade a CentOS VPS [message #9259]

Wed, 25 July 2007 07:53

carvalho

Messages: 8
Registered: July 2007
Location: PORTUGAL

Member

Many people lost SSH/console access to their VPS after doing a yum update.
I've looked in some forums and this seems to be a recurrent problem when updating CentOS VPS (4.2->4.3 , 4.3->4.4 and so on).
The reason is that inside the openvz VPS you shouldn't upgrade the kernel, udev, headers and some other modules.
I've found an workaround so that yum don't delete the /dev, and also don't mess with another things.

So what I did was after installing the HIB23 ostemplate, I edited the /etc/yum.conf and added the following line:

 exclude=udev kernel* mkinitrd module-init-tools MAKEDEV

and then did the normal:

# yum check-update
# yum -y update

My VPS was updated from centos4.4 to centos4.5
Rebooted and my sshd was still OK Thumbs Up

I hope this helps Wink

Pedro Carvalho

[Updated on: Sun, 12 October 2008 05:59] by Moderator

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Re: HOWTO Upgrade a CentOS VPS [message #9271 is a reply to message #9259]

Wed, 25 July 2007 09:46

LxCenter_Danny

Messages: 2073
Registered: July 2007
Location: Netherlands

Grandmaster
LxCenter Core Team Member
LxCenter Representative

Is it possible then to create a ostemplate (cache) for it and delete the old one?

LxCenter - System Operations

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Re: HOWTO Upgrade a CentOS VPS [message #9310 is a reply to message #9271]

Wed, 25 July 2007 14:07

Lxhelp
Messages: 23691
Registered: July 2006

The Champion

You can convert any vps to an ostemplate. Just go to vps home -> create ostemplate

Thanks.

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Re: HOWTO Upgrade a CentOS VPS [message #9318 is a reply to message #9259]

Wed, 25 July 2007 14:33

LxCenter_Danny

Messages: 2073
Registered: July 2007
Location: Netherlands

Grandmaster
LxCenter Core Team Member
LxCenter Representative

Ok,

This is what i should do?
* Install new vps with template centos-4-i386-hostinabox23
* Log in to the vps shell
* Add modifications
* Run yum update
* Shutdown vps
* Create OS template from it
* Name it: centos-4-i386-hostinabox23-custom (cant rename whole filename there)

Ok, then i have a centos-4-i386-hostinabox23-custom template.

What happens if a customer is running a Debian VPS and clicks on the Install LxAdmin button?
I know the Debian VPS is destroyed but what template is it using to build the centos+LxAdmin ?

LxCenter - System Operations

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Re: HOWTO Upgrade a CentOS VPS [message #9319 is a reply to message #9318]

Wed, 25 July 2007 14:35

Lxhelp
Messages: 23691
Registered: July 2006

The Champion

Quote:

>
> Ok,
>
> This is what i should do?
> * Install new vps with template centos-4-i386-hostinabox23
> * Log in to the vps shell
> * Add modifications
> * Run yum update
> * Shutdown vps
> * Create OS template from it
> * Name it: centos-4-i386-hostinabox23-custom (cant rename whole filename there)

yes. The above steps will suffice. HyperVm will automatically copy the ostemplate from the slave and to the master, and so the new ostemplate will automatically become available to everyone.

Quote:

>
> Ok, then i have a centos-4-i386-hostinabox23-custom template.
>
> What happens if a customer is running a Debian VPS and clicks on the Install LxAdmin button?
> I know the Debian VPS is destroyed but what template is it using to build the centos+LxAdmin ?
>

If you select install-lxadmin option, hyperVM will rebuild the vps with hostinabox23. If you need to use another ostemplate, you have to use the generic rebuild feature.

Thanks.

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Re: HOWTO Upgrade a CentOS VPS [message #9320 is a reply to message #9319]

Wed, 25 July 2007 14:43

LxCenter_Danny

Messages: 2073
Registered: July 2007
Location: Netherlands

Grandmaster
LxCenter Core Team Member
LxCenter Representative

[quote title=Lxhelp wrote on Wed, 25 July 2007 20:35]

Quote:

If you select install-lxadmin option, hyperVM will rebuild the vps with hostinabox23. If you need to use another ostemplate, you have to use the generic rebuild feature.

Why not let us decide? make it configurable?
OStemplate hostinabox: [....................]
So when install LXAdmin button is used.....

I cant generic rebuild things because yum install vzyum is not working and no answers on the thread.

The best easy fast sollution is to disable the "Show Install LxAdmin button" and if a customer wants LxAdmin then say use the -custom template.

LxCenter - System Operations

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Re: HOWTO Upgrade a CentOS VPS [message #9321 is a reply to message #9320]

Wed, 25 July 2007 14:48

Lxhelp
Messages: 23691
Registered: July 2006

The Champion

Quote:

>
>
>
> Why not let us decide? make it configurable?
> OStemplate hostinabox: [....................]
> So when install LXAdmin button is used.....
>
> I cant generic rebuild things because yum install vzyum is not working and no answers on the thread.

Vzyum is a known issue, and we will fix it soon. It happens only on 64 bit, and is happening due to 386/x64 library incompatibility.

You can go to vps home -> rebuild and rebuild with any ostemplate you need.

Quote:

>
> The best easy fast sollution is to disable the "Show Install LxAdmin button" and if a customer wants LxAdmin then say use the -custom template.

I don't understand.

Thanks.

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Re: HOWTO Upgrade a CentOS VPS [message #9326 is a reply to message #9259]

Wed, 25 July 2007 14:55

LxCenter_Danny

Messages: 2073
Registered: July 2007
Location: Netherlands

Grandmaster
LxCenter Core Team Member
LxCenter Representative

Home > Tab Advanced

Show Install Lxadmin Button [x]

Smile

LxCenter - System Operations

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Re: HOWTO Upgrade a CentOS VPS [message #9353 is a reply to message #9326]

Wed, 25 July 2007 18:27

Lxhelp
Messages: 23691
Registered: July 2006

The Champion

So you don't want the 'install lxadmin button' at all, but wants everyone to use the generic rebuild feature? Lxadmin is an integral part of hyperVM, and we cannot really separate them. Especially now many of the Server Management functions are available in hyperVM only if you have lxadmin installed in the vps.

In the future, almost all the server management will be done via lxadmin, and all the buttons will be directly accessible in vps home itself.

Thanks.

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