what exactly is resetted on action "reset" in jk status worker?

[Stephanie Wullbieter <sw...@gmx.de>]

Hi,

on
http://tomcat.apache.org/connectors-doc/reference/status.html

there is written

"reset: reset all runtime information for a load balancer or one of its members."

So I thought, that means a reset to the file based workers.properties configuration (that is active after restarting web server).

But I see that e.g. the activation status (disabled/active) does not change on "resetting" a balanced worker allthough it differs from workers.properties.

Could You please say what exactly is meant by "runtime information"?

Thanks!
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Re: what exactly is resetted on action "reset" in jk status worker?

[Rainer Jung <ra...@kippdata.de>]

Stephanie Wullbieter wrote:
> Hi,
> 
> on
> http://tomcat.apache.org/connectors-doc/reference/status.html
> 
> there is written
> 
> "reset: reset all runtime information for a load balancer or one of its members."
> 
> So I thought, that means a reset to the file based workers.properties configuration (that is active after restarting web server).
> 
> But I see that e.g. the activation status (disabled/active) does not change on "resetting" a balanced worker allthough it differs from workers.properties.
> 
> Could You please say what exactly is meant by "runtime information"?

"runtime" is any non-configuration status. Those are:

- error status of the worker (OK, IDLE, ERROR, RECOVERY, PROBE, FORCE) 
is set to IDLE

- request and error statistics (counters) of the workers are reset:

         wr->s->client_errors    = 0;
         wr->s->reply_timeouts   = 0;
         wr->s->elected          = 0;
         wr->s->elected_snapshot = 0;
         wr->s->error_time       = 0;
         wr->s->errors           = 0;
         wr->s->lb_value         = 0;
         wr->s->max_busy         = 0;
         wr->s->recoveries       = 0;
         wr->s->recovery_errors  = 0;
         wr->s->readed           = 0;
         wr->s->transferred      = 0;

I hope, the meaning of most of those variables should be more or less clear.

Resetting an lb worker is equivalent to resetting all of its members.

At the moment there is no way to write to workers.properties from within 
mod_jk. There is also no way to reset configuration settings in the 
sense, that we throw away all dynamic configuration changes (done via 
the status worker) and again use the original workers.properties (apart 
from simply [gracefully] restarting the web server).

> Thanks!

Regards,

Rainer

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