[pgpool-general: 3519] Re: health_check_period formula

[James Sewell]

Thanks for the reply,

I'm on 3.3.1, I'll upgrade.

I'm not hitting an error, just checking those settings are OK even though
the post I linked mentions a formula which I don't satisfy.

Cheers,
James Sewell

On Monday, 16 March 2015, Tatsuo Ishii <ishii at postgresql.org> wrote:

> You don't mention what pgpool-II version you use nor the actual error
> message but It seems you are bitten by the bug fixed in 3.3.4 (I assume
> you use 3.3.x):
>
>
> http://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=d0443ccc27ae1bbbc0715427072ffe67f632fd20
>
> If so, please upgrade your pgpool-II installation (the laresr version
> is 3.3.5, BTW).
>
> Best regards,
> --
> Tatsuo Ishii
> SRA OSS, Inc. Japan
> English: http://www.sraoss.co.jp/index_en.php
> Japanese:http://www.sraoss.co.jp
>
> > Hey all,
> >
> > This page
> > http://pgsqlpgpool.blogspot.com.au/2013/09/health-check-parameters.html
> > suggests that this formula must be observed (I can't see this in the doco
> > though?):
> >
> > health_check_max_retries *
> (health_check_timeout+health_check_retry_delay)"
> > < health_check_period.
> >
> > I am running on AWS and the network is pretty terrible sometimes,
> although
> > the problem isn't timeouts. When it fails connections fail straight
> away. I
> > was hoping to use these settings:
> >
> > health_check_period = 30
> > health_check_timeout = 5
> > health_check_max_retries = 20
> > health_check_retry_delay = 2
> >
> > But according the the above formula I would need a health_check_period of
> > 20*(5+2) = 140.
> >
> > I would rather avoid this and keep health_check_period at 30 seconds as I
> > don't want to wait 140 seconds between checks, is this OK?
> >
> > I've tested with iptables blocking a node and it works, just checking
> that
> > there are no hidden gotchas?
> >
> >
> > James Sewell,
> > Solutions Architect
> > ______________________________________
> >
> >
> >  Level 2, 50 Queen St, Melbourne VIC 3000
> >
> > *P *(+61) 3 8370 8000  *W* www.lisasoft.com  *F *(+61) 3 8370 8099
> >
> > --
> >
> >
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>


-- 

James Sewell,
PostgreSQL Team Lead / Solutions Architect
______________________________________


 Level 2, 50 Queen St, Melbourne VIC 3000

*P *(+61) 3 8370 8000  *W* www.lisasoft.com  *F *(+61) 3 8370 8099

-- 


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