My question is, whether is it possible to collocate participant, controller and zookeeper on one process, is there any limitations in term of Helix or Zookeeper? Any direction regarding above approach would be appreciated. On Jun 14, 2013 3:23 PM, "Ming Fang" <[email protected]> wrote:
> 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_zkMulitServerSetupon >>>> 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 >>>>>>> >>>>>> >>>>>> >>>>
