Hi Thanos, This is not documented yet. Mainly there are two ways you can use a load balancer in 4.1.0:
1. Start a global load balancer instance for the entire Stratos deployment. You just need to start a load balancer instance with proper MB and CEP configurations to do this. It will start listening to the entire topology and making the configuration accordingly. 2. Add a load balancer cartridge to your application and add a dependency to the cartridge which needs load balancing capabilities. On Tue, Jun 9, 2015 at 3:35 PM, Athanasios Tsitsipas < athanasios.tsitsi...@uni-ulm.de> wrote: > Related also with this issue > https://issues.apache.org/jira/browse/STRATOS-859 > > > > I get also unknown host at the browser. It’s really annoying to not > getting any errors for the LB and simply for a misconfiguration not working > at all… > IMO there is no error to report in this scenario. If the load balancer is receiving a request with an unknown host it cannot delegate the request. Please make sure you find the hostname of the cluster, add a DNS entry or host entry and make the request with that. On Tue, Jun 9, 2015 at 3:35 PM, Athanasios Tsitsipas < athanasios.tsitsi...@uni-ulm.de> wrote: > Related also with this issue > https://issues.apache.org/jira/browse/STRATOS-859 > > > > I get also unknown host at the browser. It’s really annoying to not > getting any errors for the LB and simply for a misconfiguration not working > at all… > > > > *From:* Athanasios Tsitsipas [mailto:athanasios.tsitsi...@uni-ulm.de] > *Sent:* Tuesday, June 9, 2015 11:32 AM > > *To:* dev@stratos.apache.org > *Subject:* RE: Can't access application in topology instance via LB > > > > Any thoughts? At Stratos 4.0.0 you used the properties in the cartridges > and a load balancing vm was spawned, when a php cartridge initialized using > the [1] in its definition . We said let’s go to the Stratos 4.1.0. But now > I cannot use correctly the load balancer. For the “Member Started”, “Member > activated” topology events I get that the member doesn’t exist! But it is > there working perfectly fine by its own. > > > > Regards, > > Thanos > > > > [1] "loadBalancer":{ > > "type":"lb", > > "property":{ > > "name":"default.load.balancer", > > "value":"true" > > } > > } > > > > > > *From:* Athanasios Tsitsipas [mailto:athanasios.tsitsi...@uni-ulm.de > <athanasios.tsitsi...@uni-ulm.de>] > *Sent:* Tuesday, June 9, 2015 10:58 AM > *To:* dev@stratos.apache.org > *Subject:* RE: Can't access application in topology instance via LB > > > > Hi, > > > > Also in the Stratos 4.0.0 you were having a configuration for load > balancing. In the lb cartridge you’ve added the following: > > "property":[ > > { > > "name":"load.balancer", > > "value":"true" > > } > > ] > > And in the php cartridge for instance: > > , > > "loadBalancer":{ > > "type":"lb", > > "property":{ > > "name":"default.load.balancer", > > "value":"true" > > } > > } > > And from that site it makes sense what to use > http://imesh.gunaratne.org/blog/advance-load-balancing-capabilities-in-apache-stratos-incubating-4/ > > > > But now in the Stratos 4.1.0 these configurations are gone… Something > changed as I can see but I cannot get it working > > > > Regards, > > Thanos > > > > > > *From:* Athanasios Tsitsipas [mailto:athanasios.tsitsi...@uni-ulm.de > <athanasios.tsitsi...@uni-ulm.de>] > *Sent:* Tuesday, June 9, 2015 10:24 AM > *To:* dev@stratos.apache.org > *Subject:* Can't access application in topology instance via LB > > > > Hi again, > > > > I managed to start a Stratos Load Balancer without errors. But when > another application is in the cluster cannot be accessed through load > balancer. Even if I specify the host name of the app and the IP of LB to my > client hosts file nothing works. I get the following error: > > > > TID: [0] [LB] [2015-06-08 22:51:13,156] WARN > {org.apache.stratos.messaging.message.processor.topology.MemberStartedMessageProcessor} > - Member does not exist: [service] php [cluster] > php-lb.php-test.php.domain [member] > php-lb.php-test.php.domain49fe383c-500a-43ec-9556-69432665448d > > > > > > When I start the load balancer with puppet of course* the log file is > attached to the mail*. Just to see if there are any erroneous behaviours. > > > > Also in the loadbalancer.conf file the # Topology service filter and # > Topology cluster filter there is no information for them. Only for # > Topology member filter. *I have also attached the loabalancer.conf of the > machine.* > > > > What should I do it doesn’t work apparently :/ > > > > Best regards, > > Thanos > -- Imesh Gunaratne Senior Technical Lead, WSO2 Committer & PMC Member, Apache Stratos
