upgrade

[tophyd]

Hello!
I need to upgrade the kernel and operating system for 15 identically configured servers.(debian 6)
How to do this task?

[cynwulf]

debian 6 is the latest stable release - so if you run...

aptitude update && aptitude safe-upgrade

...from the terminal on each machine it will keep them up to date with security patches.

If you want to automate updates, then look into something like cron-apt

[tophyd]

Must at the same time. Need a general solution.

[cynwulf]

Must at the same time.

A local mirror or something like apt-cacher may be what you want, as all machines will be pulling the same updates at once using the remote repos would be a bad idea. Using e.g. apt-cacher means you have an up to date local cache of the stable repos which you can point all other servers to, to pull their updates from via (sources.list).

As I said previously you can use cron-apt to automate the updates - this should work well with apt-cacher.

Need a general solution.

Then google is your friend.

[tophyd]

Then google is your friend.

Sorry, Google does not know how to update both the kernel and the system for 15 servers. Is there an application that will allow it to do.

[tophyd]

For example, a laptop has been updated and the rest of his likeness, too. That is, one computer as a sample (standard)

[cynwulf]

If you want to be spoonfed information, while only providing vague information yourself, then I suggest you get paid support with a company like Red Hat and switch to RHEL. I gave you a decent answer here, if you do some research and look into the programs I've referenced you should be able to set up those 15 servers to pull their updates from a single local mirror simultaneously. The rest is up to you.

A local mirror or something like apt-cacher may be what you want, as all machines will be pulling the same updates at once using the remote repos would be a bad idea. Using e.g. apt-cacher means you have an up to date local cache of the stable repos which you can point all other servers to, to pull their updates from via (sources.list).

As I said previously you can use cron-apt to automate the updates - this should work well with apt-cacher.

[tophyd]

If you want to be spoonfed information, while only providing vague information yourself, then I suggest you get paid support with a company like Red Hat and switch to RHEL. I gave you a decent answer here, if you do some research and look into the programs I've referenced you should be able to set up those 15 servers to pull their updates from a single local mirror simultaneously. The rest is up to you.

I do not have a local mirror. And I want to know the solution other than apt. And where does Red Hat?

[Irithori]

You dont provide anything other than
- "I want to update 15 machines"
- "I dont want to use apt"

cynwulf is right, using apt and a cron can be a solution.
If you want it less automated, but rather triggered by yourself: then maybe have a look at clusterssh.
15 is a still a low enough number for such a ssh multiplexer.

Other than that:
- apt *is* the way in debian to deal with packages. Full Stop.
- You *can* build upon that, with for example puppet or cfengine, but apt will be the basis.
So it pays to look into apt first.

[tophyd]

Thnx! Сlusterssh is what i need! Also very interesting were cfengine.