Re: google compute engine health check or DoS?
Thanks Jimmy, I will try the gcutil resetinstance; looking at may GCE console
https://twitter.com/Metztli_IT/status/447226775483858944/photo/1/large
I think I may switch DNS to CloudFlare for resilience on this
instance. First time it happens (sigh)
Thank you, Jeremy, as well.
Best Professional Regards
On Fri, Mar 21, 2014 at 9:23 PM, Jimmy Kaplowitz <jkaplowitz@google.com> wrote:
> gcutil resetinstance is a reasonable idea. That is the equivalent of
> pressing a hard reset button on the system. Alternatively, gcutil
> deleteinstance and declining when asked about deleting the boot disk (or
> using --nodelete_boot_pd) is the equivalent of sending an ACPI power down
> signal (there is no equivalent signal for soft reboots) and freeing up the
> CPU, unreserved IP addresses, RAM, etc.
>
> Neither of these deletes your disk - the disk is called persistent disk for
> a reason. (The soon-to-vanish v1beta16 API offered scratch disks, but unless
> you're using a gcutil from before early December, you would have had to
> choose that API explicitly.) I've used both commands many times, including
> on critical instances.
>
> If you do ever delete and re-add the instance, you can give gcutil
> addinstance a flag like --disk=<old instance name>,boot instead of
> specifying an image to boot off the existing disk.
>
> Also, if you apt-get upgraded without rebooting, the kernel is the same one
> you first booted with. However unless something got killed via OOM, I can't
> see how the old kernel's memory leak would be related.
>
> Yes, I meant #debian-cloud on IRC. (As Jeremy said, that's irc.debian.org,
> also known as OFTC.) I'm Hydroxide there.
>
> Heading to sleep soon - it is indeed evening here and I'm on an unusually
> early schedule this week.
>
> Good luck!
>
> - Jimmy
>
>
> On Fri, Mar 21, 2014 at 9:01 PM, Jose R R <Jose.r.r@metztli-it.com> wrote:
>>
>> Hi Jimmy-
>>
>> Sorry I did not think anybody would reply as quickly on a Friday
>> evening (Calironia).
>>
>> I had not experienced any issues since approximately 2 months ago that
>> I started the instance with Salt/Libcloud as a proof of concept.
>> Accordingly the image has been upgraded since then with apt-get
>> update/dist-upgrade.
>>
>> gcutil getserialportoutput ouputs a long output and at the end I get
>> copious output with tail related to the database, example:
>>
>> Mar 21 20:23:31 my-google-instance mysqld: 0 [0, 0, 0, 0] ,
>> Mar 21 20:23:43 my-google-instance mysqld: ibuf aio reads:140321
>> 20:23:43 [Warning] Aborted connection 58427 to db: 'my-sql-db' user:
>> 'my-self' host: 'localhost' (Unknown error)
>> Mar 21 20:25:49 my-google-instance mysqld: 140321 20:25:49 [Warning]
>> Aborted connection 58378 to db: 'my-sql-db' user: 'my-self' host:
>> 'localhost' (Unknown error)
>>
>> I was going to try gcutil resetinstance to reboot my instance but I am
>> not sure if it will wipe out my served content.
>>
>>
>> Best Professional regards.
>>
>> PS. #debian-cloud irc?
>>
>>
>> On Fri, Mar 21, 2014 at 7:27 PM, Jimmy Kaplowitz <jkaplowitz@google.com>
>> wrote:
>> > Hi Jose,
>> >
>> > No, us-central1-b should be working. Does gcutil getserialportoutput
>> > (or
>> > the equivalent web console view) show anything informative? Might be an
>> > OOM,
>> > a kernel panic, really any of the possibilities for a normal system.
>> >
>> > I won't be awake many more hours, but I can briefly discuss in
>> > #debian-cloud
>> > if you'd like.
>> >
>> > One thing to note is that a memory leak in the virtio-scsi driver got
>> > fixed
>> > in the Debian 7.4 kernel, and is also absent from the backports kernel.
>> > Either of these is recommended over older Debian kernels.
>> >
>> > We released our 7.4 images earlier this week, though of course apt-get
>> > upgrade would have gotten you that sooner, and the backports image
>> > already
>> > offered a newer kernel partly for this reason.
>> >
>> > - Jimmy
>> >
>> > On Mar 21, 2014 7:10 PM, "Jose R R" <Jose.r.r@metztli-it.com> wrote:
>> >>
>> >> Niltze [hi!]-
>> >>
>> >> I am running a small Debian instance on GCE on us-central1-b (from
>> >> another email account than this one) and was wondering if there it's
>> >> undergoing maintenance; otherwise I think it is being being DoS DDoS
>> >> since
>> >>
>> >> gcutil nor ssh are not able to connect; nor the web server displays
>> >> anything (loading...)
>> >>
>> >> If anyone from GCE reads this I'd appreciate your input.
>> >>
>> >>
>> >> Best Professional Regards.
>> >>
>> >> --
>> >> Jose R R
>> >> http://www.metztli-it.com
>> >>
>> >>
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