eZ and failover

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Author	Message
PO Michel	Wednesday 06 September 2006 2:05:34 am Hi, We use ez 3.7.4 in a failover environment (2 Linux machines - one master and one slave - running the Heartbeat service). There is a filesytem synchronization between the master and the slave as well as a MySQL replication. We encounter the following problems : - Cache information is synchronized on the slave and generates bad displays of our web site on the slave (missing images), - Due to the fact eZ logs user sessions in the DB, we have to import the DB on the slave after each switch on the slave in order to have mysql replication running. Does release 3.8.3 brings improvment regarding this failover/cluster mode ? Thanks in advance, PO
Tony Wood	Wednesday 06 September 2006 7:20:56 am Hi, We have used Redhat server cluster on a project. It is pricey but does all the heavy lifting. If you do not want to pay for Redhat then I know heartbeat can be setup to work if you want it for no money. To resolve the var issue if you can, stretch to back end fibre storage that normally does the trick and is lovely and fast. Failing that a Crossover Gig cable into the nics can get you some of the way then you can rsync or mount an NFS location. Tony Tony Wood : twitter.com/tonywood Vision with Technology Experts in eZ Publish consulting & development Power to the Editor! Free eZ Training : http://www.VisionWT.com/training eZ Future Podcast : http://www.VisionWT.com/eZ-Future

Author

Message

Wednesday 06 September 2006 2:05:34 am

Hi,

We use ez 3.7.4 in a failover environment (2 Linux machines - one master and one slave - running the Heartbeat service). There is a filesytem synchronization between the master and the slave as well as a MySQL replication.

We encounter the following problems :

- Cache information is synchronized on the slave and generates bad displays of our web site on the slave (missing images),
- Due to the fact eZ logs user sessions in the DB, we have to import the DB on the slave after each switch on the slave in order to have mysql replication running.

Does release 3.8.3 brings improvment regarding this failover/cluster mode ?

Thanks in advance,

Tony Wood

Wednesday 06 September 2006 7:20:56 am

Hi,

We have used Redhat server cluster on a project. It is pricey but does all the heavy lifting.
If you do not want to pay for Redhat then I know heartbeat can be setup to work if you want it for no money.
To resolve the var issue if you can, stretch to back end fibre storage that normally does the trick and is lovely and fast. Failing that a Crossover Gig cable into the nics can get you some of the way then you can rsync or mount an NFS location.

Tony

Tony Wood : twitter.com/tonywood
Vision with Technology
Experts in eZ Publish consulting & development

Power to the Editor!

Free eZ Training : http://www.VisionWT.com/training
eZ Future Podcast : http://www.VisionWT.com/eZ-Future

eZ debug

Timing:	Jan 18 2025 16:15:41
Script start
Timing:	Jan 18 2025 16:15:41
Module start 'layout'
Timing:	Jan 18 2025 16:15:41
Module start 'content'
Timing:	Jan 18 2025 16:15:41
Module end 'content'
Timing:	Jan 18 2025 16:15:41
Script end

Main resources:

Total runtime	0.0162 sec
Peak memory usage	2,048.0000 KB
Database Queries	3

Timing points:

Checkpoint	Start (sec)	Duration (sec)	Memory at start (KB)	Memory used (KB)
Script start	0.0000	0.0060	589.0234	152.6250
Module start 'layout'	0.0060	0.0025	741.6484	39.4453
Module start 'content'	0.0085	0.0055	781.0938	89.3203
Module end 'content'	0.0140	0.0021	870.4141	30.3047
Script end	0.0161		900.7188

Time accumulators:

Accumulator	Duration (sec)	Duration (%)	Count	Average (sec)
Ini load
Load cache	0.0026	15.9382	14	0.0002
Check MTime	0.0011	6.9769	14	0.0001
Mysql Total
Database connection	0.0010	6.0238	1	0.0010
Mysqli_queries	0.0022	13.7918	3	0.0007
Looping result	0.0000	0.0796	1	0.0000
Template Total	0.0017	10.5	1	0.0017
Template load	0.0009	5.5980	1	0.0009
Template processing	0.0008	4.8497	1	0.0008
Override
Cache load	0.0006	3.6446	1	0.0006
General
dbfile	0.0003	1.6706	8	0.0000
String conversion	0.0000	0.0412	4	0.0000
Note: percentages do not add up to 100% because some accumulators overlap

Templates used to render the page:

Usage	Requested template	Template	Template loaded	Edit	Override
1	print_pagelayout.tpl	<No override>	extension/community/design/community/templates/print_pagelayout.tpl
Number of times templates used: 1 Number of unique templates used: 1

Time used to render debug report: 0.0001 secs