That's not possible at this time. ZAC currently must run as a standalone process and only allow one instance.
Sent from my iPad On Jun 14, 2013, at 7:35 AM, Erwin Karbasi <[email protected]> wrote: > If I have 40 app server instances (JVMs) could I run participants on all of > them, controller and zookeeper just on 5 of then, but on the same process of > the 5 participants? > > On Jun 14, 2013 2:29 PM, "Ming Fang" <[email protected]> wrote: >> ZAC currently runs Zookeeper in standalone mode. >> Therefore you can only run one instance. >> If you also run the participant in it then that limits you to one instance >> of the participant also. >> >> >> Sent from my iPad >> >> On Jun 14, 2013, at 7:23 AM, Erwin Karbasi <[email protected]> wrote: >> >>> Hi Ming, >>> >>> Thank you for fast turnaround response. >>> >>> Could I run my app that uses Helix (participant), controller and zookeeper >>> on the same process? >>> >>> Cheers, >>> Erwin >>> >>> On Jun 14, 2013 2:16 PM, "Ming Fang" <[email protected]> wrote: >>>> Erwin >>>> >>>> Here is an example of running Zookeeper, and Controller in the same >>>> process, >>>> https://github.com/mingfang/apache-helix/blob/master/helix-example/src/main/java/org/apache/helix/examples/ZAC.java >>>> We have this in production. >>>> >>>> Sent from my iPad >>>> >>>> On Jun 14, 2013, at 3:34 AM, Erwin Karbasi <[email protected]> wrote: >>>> >>>>> I know that it's better that participants, controller and zookeeper will >>>>> have separate java processes but we have more then 40 boxes with app >>>>> server that we'd like to manage them with Helix Leader election and >>>>> cannot add more processes because each additional java process requires >>>>> management (monitoring, alarms, KPI, etc...), so we prefer to avoid the >>>>> additional java processes. We'll not manage to approve additional >>>>> processes >>>>> >>>>> Your insight would appreciated. >>>>> >>>>> Thanks, >>>>> Erwin >>>>> >>>>> On Jun 14, 2013 9:58 AM, "kishore g" <[email protected]> wrote: >>>>>> Hi Erwin, >>>>>> >>>>>> This is how I would setup your cluster. Allocate 3 boxes that only run >>>>>> zookeeper and Helix controller. Its better that they are two separate >>>>>> process. These boxes need not be powerful but isolating zookeeper and >>>>>> helix controller from actual server is a good deployment practice. See >>>>>> http://zookeeper.apache.org/doc/trunk/zookeeperAdmin.html#sc_zkMulitServerSetup >>>>>> on how to use zookeeper clustering ensemble. >>>>>> >>>>>> >>>>>> Run the real servers on the rest of the boxes. Do not start zookeeper as >>>>>> part of these processes, instead simply provide the zookeeper address >>>>>> (zk1:port1,zk2:port2,zk3:port3) when you invoke Helix Api. >>>>>> >>>>>> >>>>>> Thanks, >>>>>> Kishore G >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> On Thu, Jun 13, 2013 at 10:05 PM, Erwin Karbasi <[email protected]> >>>>>> wrote: >>>>>>> Hi Kishore, >>>>>>> >>>>>>> We have more then 50 nodes. >>>>>>> >>>>>>> Cheers, >>>>>>> Erwin >>>>>>> >>>>>>> On Jun 14, 2013 1:51 AM, "kishore g" <[email protected]> wrote: >>>>>>>> Hi Erwin, >>>>>>>> >>>>>>>> How many nodes do you have in your cluster ? >>>>>>>> >>>>>>>> thanks, >>>>>>>> Kishore G >>>>>>>> >>>>>>>> >>>>>>>> On Thu, Jun 13, 2013 at 1:43 PM, Erwin Karbasi <[email protected]> >>>>>>>> wrote: >>>>>>>>> Hello Maters, >>>>>>>>> >>>>>>>>> We don't want to have separate/specific JAVA process for Zookeeper. >>>>>>>>> As I figured out from the Master-Slave sample we can start the >>>>>>>>> Zookeeper programmatically using the Zookeeper API. >>>>>>>>> >>>>>>>>> I have several questions: >>>>>>>>> >>>>>>>>> 1. If we are using the Zookeeper API for initializing the Zookeeper >>>>>>>>> from the Helix app (out app that uses Helix) would we have specific >>>>>>>>> process for Zookeeper? Would we have one process for our app and >>>>>>>>> another for the Zookeeper? >>>>>>>>> What happens if we'll not initialize the Zookeeper from the Helix app >>>>>>>>> programmatically but using the commands, whether then would we have >>>>>>>>> specific process for Zookeeper? >>>>>>>>> >>>>>>>>> 2. If we'll decide to initialize Zookeeper from Helix app, >>>>>>>>> programmatically, How can we use Zookeeper clustering (ensemble) , is >>>>>>>>> there any API for Zookeeper clustering, any direction would highly >>>>>>>>> appreciated. >>>>>>>>> >>>>>>>>> 3. Is it possible to start the Zookeeper by using commands and not >>>>>>>>> initializing specific process for it but using the Helix app (our app >>>>>>>>> that uses Helix API)? >>>>>>>>> >>>>>>>>> I hope my questions are enough clear. >>>>>>>>> >>>>>>>>> Thanks in advance, >>>>>>>>> Erwin Karbasi >>>>>>>>> AT&T, Senior Software Architect
