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FS#4393 — FS#8328 — Establishment of a new load balancer

Attached to Project— Hosting
Modernization
1000gp
CLOSED
100%
We have developed a specific load balancer , more accurate and a lot more flexible.
It has been specially designed to handle the shared hosting architecture.

Lab tests allowed us to improve the caches:
We have got up to 6x less disk queries.

We will deploy it tonight in order to confirm its performance in a real environment.
Remaining a few settings to make it optimal.

The load balancer is dedicated to work performed on okillerd (which reports any issue on your php scripts, on manager)
Date:  Friday, 12 April 2013, 12:26PM
Reason for closing:  Done
Comment by OVH - Thursday, 28 March 2013, 06:29AM

The load balancer was enabled.


Comment by OVH - Thursday, 28 March 2013, 06:31AM

The load balancer works properly.
We have many logs to analyze in detail.


Comment by OVH - Thursday, 28 March 2013, 06:32AM

We will stop it during the analysis.


Comment by OVH - Saturday, 30 March 2013, 01:03AM

Yesterday, we have validated the crash tests: if the system crashes,
the cluster continues to run and switches to the current repartition.

Thereafter the analysis of previous tests, we have improved
the prediction's algorithm.

We are going to activate the module this afternoon.


Comment by OVH - Saturday, 30 March 2013, 01:03AM

Load balancer is enabled.


Comment by OVH - Saturday, 30 March 2013, 01:04AM

We have reset the old load balancer for this weekend.


Comment by OVH - Tuesday, 02 April 2013, 15:34PM

The distributor is working again and under monitoring's admins.


Comment by OVH - Friday, 05 April 2013, 18:19PM

We will test the preduictor on start offer tonight.


Comment by OVH - Saturday, 06 April 2013, 01:27AM

We have enabled the predictors on cluster014 (the old start)


Comment by OVH - Tuesday, 09 April 2013, 00:51AM

We are preparing the cluster015 (aka mailplan)


Comment by OVH - Tuesday, 09 April 2013, 03:18AM

The predictor will be activated on Tuesday during the morning.


Comment by OVH - Tuesday, 09 April 2013, 16:54PM

We have activated the predictor on the cluster 15 (mailplan)


Comment by OVH - Tuesday, 09 April 2013, 16:55PM

The predictor is temporarily disabled on cluster 15.

Some sites use too many resources, we will have to isolate them on a dedicated one.


Comment by OVH - Wednesday, 10 April 2013, 04:31AM

Thereafter diagnosis done on cluster 15, we have improved the repartition algorithm.

It has been deployed tonight on cluster 14.

We will reactivate the new predictor on cluster 15 on Wednesday morning.



Comment by OVH - Wednesday, 10 April 2013, 11:54AM

The balancer is activated on cluster 15.


Comment by OVH - Friday, 12 April 2013, 12:26PM

Balancers are validated on these clusters.

We will soon deploy them on other closed ones.