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On Sat 25 Feb 2012 05:48:49 PM IST, Mick wrote: |
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> On Saturday 25 Feb 2012 02:32:49 Pandu Poluan wrote: |
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>> On Feb 25, 2012 9:14 AM, "Grant" <emailgrant@×××××.com> wrote: |
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>>>>> I need to test a kernel config change on a remote system. Is there a |
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>>>>> safe way to do this? The fallback thing in grub has never worked for |
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>>>>> me. When does that ever work? |
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>>>> |
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>>>> You can press ESC in the Grub screen and it will take you to text-only |
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>> |
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>> mode. |
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>> |
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>>>> There, you select an entry, press "e" and edit it. Press ENTER when |
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>> |
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>> you're |
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>> |
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>>>> finished, and then press "b" to boot your modified entry. |
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>>>> |
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>>>> That way, you can boot whatever kernel you want if the current one |
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>> |
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>> doesn't |
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>> |
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>>>> work. |
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>>> |
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>>> I can't do that remotely though. I'm probably asking for something |
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>>> that doesn't exist. |
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>>> |
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>>> - Grant |
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>> |
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>> Situations like these that made me decide with great conviction to always |
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>> deploy my servers virtualized, even if the box in question will only host a |
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>> single VM. |
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>> |
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>> Now, if I lost my intelligence for a couple of seconds and somehow ended up |
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>> with a VM that's no longer accessible remotely, I just connect to the |
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>> virtual console. |
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>> |
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>> The flip side? Now I'm getting too daring/careless, and the uptime now |
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>> drops below my (self-imposed) target of 99.99% :-P |
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> |
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> What do you do when you need to upgrade the host, rather than the guest? |
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> |
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|
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I think setting up a VM on the server using the new kernel should help |
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test a new kernel? |
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|
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-- |
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Nilesh Govindarajan |
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http://nileshgr.com |
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