Multiple server setup (HAFO)

[Pierre Smits]

Hi All,

Does any one have experiences with a multi server setup (High Availability
- Fail Over) with either the embedded tomcat server or using external
servers? I am seeing some erratic behaviour in a 3 server installation, and
I don't know whether this is due to specific hot-deploy apps or otherwise.

Please share your experiences.

Regards,

Pierre Smits

*ORRTIZ.COM <http://www.orrtiz.com>*
Services & Solutions for Cloud-
Based Manufacturing, Professional
Services and Retail & Trade
http://www.orrtiz.com

[Rong Nguyen]

You should post "some erratic behaviour"

[Adrian Crum-3]

It might help to be more specific about the problem. What do you mean by
"erratic behavior?" What version of OFBiz? How is the cluster configured?

Adrian Crum
Sandglass Software
www.sandglass-software.com

On 1/2/2014 4:01 AM, Pierre Smits wrote:

> Hi All,
>
> Does any one have experiences with a multi server setup (High Availability
> - Fail Over) with either the embedded tomcat server or using external
> servers? I am seeing some erratic behaviour in a 3 server installation, and
> I don't know whether this is due to specific hot-deploy apps or otherwise.
>
> Please share your experiences.
>
> Regards,
>
> Pierre Smits
>
> *ORRTIZ.COM <http://www.orrtiz.com>*
> Services & Solutions for Cloud-
> Based Manufacturing, Professional
> Services and Retail & Trade
> http://www.orrtiz.com
>

[Pierre Smits]

In a test environment we have setup the following configuration:

- Apache http server in front with mod_jk configured for load balancing
pointing via ajp to:
- 3 OFBiz spokes based on trunk (embedded tomcat version) on linux, each
set with own unique.instanceId (ofbiz1, ofbiz2, ofbiz3) and each with own
jvm-route (ofbiz1, ofbiz2, ofbiz3
- DCC implemented (activemq lib installed - as per JIRA OFBIZ-5448),
connecting to Apache Servicemix. This works
- demo loaded in default
- setup of a few test tenants (tenantA, tenantB, tenantC) with seed,
seed-initial and seed-ext data, plus specific product data tenant users
(with proper permissions and roles) for each tenant


The erratic behaviours we are seeing are:

1)
In the backend, when having logged in a tenant, we experience that when
having logged in e.g. the catalog or contant and having accessed a screen
(meaning screen is loaded and shown properly), when going to another screen
in the same application the user is required to login again. This happens
very regularly.

2)
In a hot-deploy copy of the ecommerce application (re-using services and
groovy script files, but pointers to menu, screens and forms (including ftl
files) are to the objects in the (own) hot-deploy copy, we see that when
having loaded (and properly shown) the main screen (with promotions
overview) and going to e.g. a specific product in the promotions overview
we experience the display of a blank screen. This also happens frequently.
After reloading the screen in the browser the correct screen is loaded and
shown.

3)
In above mentioned hot-deploy copy of the ecommerce app when trying to
display products in a category from the tree we regularly get following
message: An error occured loading content!: [object Object]

Regards,



Pierre Smits

*ORRTIZ.COM <http://www.orrtiz.com>*
Services & Solutions for Cloud-
Based Manufacturing, Professional
Services and Retail & Trade
http://www.orrtiz.com

[Pierre Smits]

In the second situation described in my previous post, I meant to say that
the pointers to groovy scripts and services (when and where applicable)
aren't modified and point to the locations in the special-purpose ecommerce
application.


Pierre Smits

*ORRTIZ.COM <http://www.orrtiz.com>*
Services & Solutions for Cloud-
Based Manufacturing, Professional
Services and Retail & Trade
http://www.orrtiz.com


On Thu, Jan 2, 2014 at 1:16 PM, Pierre Smits <[hidden email]> wrote:

> In a test environment we have setup the following configuration:
>
> - Apache http server in front with mod_jk configured for load balancing
> pointing via ajp to:
> - 3 OFBiz spokes based on trunk (embedded tomcat version) on linux, each
> set with own unique.instanceId (ofbiz1, ofbiz2, ofbiz3) and each with own
> jvm-route (ofbiz1, ofbiz2, ofbiz3
> - DCC implemented (activemq lib installed - as per JIRA OFBIZ-5448),
> connecting to Apache Servicemix. This works
> - demo loaded in default
> - setup of a few test tenants (tenantA, tenantB, tenantC) with seed,
> seed-initial and seed-ext data, plus specific product data tenant users
> (with proper permissions and roles) for each tenant
>
>
> The erratic behaviours we are seeing are:
>
> 1)
> In the backend, when having logged in a tenant, we experience that when
> having logged in e.g. the catalog or contant and having accessed a screen
> (meaning screen is loaded and shown properly), when going to another screen
> in the same application the user is required to login again. This happens
> very regularly.
>
> 2)
> In a hot-deploy copy of the ecommerce application (re-using services and
> groovy script files, but pointers to menu, screens and forms (including ftl
> files) are to the objects in the (own) hot-deploy copy, we see that when
> having loaded (and properly shown) the main screen (with promotions
> overview) and going to e.g. a specific product in the promotions overview
> we experience the display of a blank screen. This also happens frequently.
> After reloading the screen in the browser the correct screen is loaded and
> shown.
>
> 3)
> In above mentioned hot-deploy copy of the ecommerce app when trying to
> display products in a category from the tree we regularly get following
> message: An error occured loading content!: [object Object]
>
> Regards,
>
>
>
> Pierre Smits
>
> *ORRTIZ.COM <http://www.orrtiz.com>*
> Services & Solutions for Cloud-
> Based Manufacturing, Professional
> Services and Retail & Trade
> http://www.orrtiz.com
>
>

[Mike Z]

You probably have to define "sticky sessions" in your mod_jk Config.

Sent from my BlackBerry® PlayBook™
www.blackberry.com

------------------------------
*From:* "Pierre Smits" <[hidden email]>
*To:* "[hidden email]" <[hidden email]>
*Sent:* January 2, 2014 4:17 AM
*Subject:* Re: Multiple server setup (HAFO)

In a test environment we have setup the following configuration:

- Apache http server in front with mod_jk configured for load balancing
pointing via ajp to:
- 3 OFBiz spokes based on trunk (embedded tomcat version) on linux, each
set with own unique.instanceId (ofbiz1, ofbiz2, ofbiz3) and each with own
jvm-route (ofbiz1, ofbiz2, ofbiz3
- DCC implemented (activemq lib installed - as per JIRA OFBIZ-5448),
connecting to Apache Servicemix. This works
- demo loaded in default
- setup of a few test tenants (tenantA, tenantB, tenantC) with seed,
seed-initial and seed-ext data, plus specific product data tenant users
(with proper permissions and roles) for each tenant


The erratic behaviours we are seeing are:

1)
In the backend, when having logged in a tenant, we experience that when
having logged in e.g. the catalog or contant and having accessed a screen
(meaning screen is loaded and shown properly), when going to another screen
in the same application the user is required to login again. This happens
very regularly.

2)
In a hot-deploy copy of the ecommerce application (re-using services and
groovy script files, but pointers to menu, screens and forms (including ftl
files) are to the objects in the (own) hot-deploy copy, we see that when
having loaded (and properly shown) the main screen (with promotions
overview) and going to e.g. a specific product in the promotions overview
we experience the display of a blank screen. This also happens frequently.
After reloading the screen in the browser the correct screen is loaded and
shown.

3)
In above mentioned hot-deploy copy of the ecommerce app when trying to
display products in a category from the tree we regularly get following
message: An error occured loading content!: [object Object]

Regards,



Pierre Smits

*ORRTIZ.COM *
Services & Solutions for Cloud-
Based Manufacturing, Professional
Services and Retail & Tradehttp://www.orrtiz.com

[Pierre Smits]

Thanks Mike,

But I have following in my workers.properties file for mod_jk configuration:
worker.test-LB.sticky_session=True

Regards,

Pierre Smits

*ORRTIZ.COM <http://www.orrtiz.com>*
Services & Solutions for Cloud-
Based Manufacturing, Professional
Services and Retail & Trade
http://www.orrtiz.com


On Thu, Jan 2, 2014 at 8:54 PM, Mike Z <[hidden email]> wrote:

> You probably have to define "sticky sessions" in your mod_jk Config.
>
> Sent from my BlackBerry® PlayBook™
> www.blackberry.com
>
> ------------------------------
> *From:* "Pierre Smits" <[hidden email]>
> *To:* "[hidden email]" <[hidden email]>
> *Sent:* January 2, 2014 4:17 AM
> *Subject:* Re: Multiple server setup (HAFO)
>
> In a test environment we have setup the following configuration:
>
> - Apache http server in front with mod_jk configured for load balancing
> pointing via ajp to:
> - 3 OFBiz spokes based on trunk (embedded tomcat version) on linux, each
> set with own unique.instanceId (ofbiz1, ofbiz2, ofbiz3) and each with own
> jvm-route (ofbiz1, ofbiz2, ofbiz3
> - DCC implemented (activemq lib installed - as per JIRA OFBIZ-5448),
> connecting to Apache Servicemix. This works
> - demo loaded in default
> - setup of a few test tenants (tenantA, tenantB, tenantC) with seed,
> seed-initial and seed-ext data, plus specific product data tenant users
> (with proper permissions and roles) for each tenant
>
>
> The erratic behaviours we are seeing are:
>
> 1)
> In the backend, when having logged in a tenant, we experience that when
> having logged in e.g. the catalog or contant and having accessed a screen
> (meaning screen is loaded and shown properly), when going to another screen
> in the same application the user is required to login again. This happens
> very regularly.
>
> 2)
> In a hot-deploy copy of the ecommerce application (re-using services and
> groovy script files, but pointers to menu, screens and forms (including ftl
> files) are to the objects in the (own) hot-deploy copy, we see that when
> having loaded (and properly shown) the main screen (with promotions
> overview) and going to e.g. a specific product in the promotions overview
> we experience the display of a blank screen. This also happens frequently.
> After reloading the screen in the browser the correct screen is loaded and
> shown.
>
> 3)
> In above mentioned hot-deploy copy of the ecommerce app when trying to
> display products in a category from the tree we regularly get following
> message: An error occured loading content!: [object Object]
>
> Regards,
>
>
>
> Pierre Smits
>
> *ORRTIZ.COM *
> Services & Solutions for Cloud-
> Based Manufacturing, Professional
> Services and Retail & Tradehttp://www.orrtiz.com
>

[Scott Gray-2]

Check that resource URLs aren't html encoded, some browsers fail to send cookie information in that situation which causes a new session to be created.

Scott

On 2/01/2014, at 12:16 PM, Pierre Smits wrote:

> 1)
> In the backend, when having logged in a tenant, we experience that when
> having logged in e.g. the catalog or contant and having accessed a screen
> (meaning screen is loaded and shown properly), when going to another screen
> in the same application the user is required to login again. This happens
> very regularly.

[Pierre Smits]

Thanks Scot,

Given that I use trunk as the basis and its data (with a few modifications
regarding the test tenants) I don't expect this to be the case. But I will
have it looked into.

Regards,

Pierre Smits

*ORRTIZ.COM <http://www.orrtiz.com>*
Services & Solutions for Cloud-
Based Manufacturing, Professional
Services and Retail & Trade
http://www.orrtiz.com


On Thu, Jan 2, 2014 at 11:34 PM, Scott Gray <[hidden email]>wrote:

> Check that resource URLs aren't html encoded, some browsers fail to send
> cookie information in that situation which causes a new session to be
> created.
>
> Scott
>
> On 2/01/2014, at 12:16 PM, Pierre Smits wrote:
>
> > 1)
> > In the backend, when having logged in a tenant, we experience that when
> > having logged in e.g. the catalog or contant and having accessed a screen
> > (meaning screen is loaded and shown properly), when going to another
> screen
> > in the same application the user is required to login again. This happens
> > very regularly.
>
>