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From Sasha Dolgy <sdo...@gmail.com>
Subject Re: 99.999% uptime - Operations Best Practices?
Date Wed, 22 Jun 2011 22:16:50 GMT
Implement monitoring and be proactive...that will stop you waking up to a
big surprise.  i'm sure there were symltoms leading up to all 4 nodes going
down.  willing to wager that each node went down at different times and not
all went down at once...
On Jun 22, 2011 11:50 PM, "Les Hazlewood" <les@katasoft.com> wrote:
> I understand that every environment is different and it always 'depends'
:)
> But recommending settings and techniques based on an existing real
> production environment (like the user's suggestion to run nodetool repair
as
> a regular cron job) is always a better starting point for a new Cassandra
> evaluator than having to start from scratch.
>
> Ryan, do you have any 'seed' settings that you guys use for nodes at
> Twitter?
>
> Are there any resources/write-ups beyond the two I've listed already that
> address some of these 'gotchas'? If those two links are in fact the ideal
> starting point, that's fine - but it appears that this may not be the case
> however based on the aforementioned user as well as the other who helped
him
> who saw similar warning signs.
>
> I'm hoping for someone to dispel these reports based on what people
actually
> do in production today. Any info/settings/recommendations based on real
> production environments would be appreciated!
>
> Thanks again,
>
> Les

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