Thanks. I'm definitely going to try them out. Appreciate your help.
On Fri, Jan 18, 2013 at 2:42 AM, Asta, Greg <[email protected]> wrote: > I don't know how to manipulate VIPs in Java. In Linux shell scripting > it'd be something like "ip addr add 192.168.1.1 eth0". Obviously replace > the IP address with whatever IP you'd use and the interface with the proper > NIC. > > The inverse (to drop it) would be ip addr del command. To make this work > without fussing with the network equipment usually these machines need to > be on the same switch I believe. > > -Greg > > -----Original Message----- > From: Saurabh Dutta [mailto:[email protected]] > Sent: Thursday, January 17, 2013 3:46 PM > To: [email protected] > Subject: Re: Zookeeper Coodination Service > > Thanks Edward and Greg. > > Can you help me with a small java code snippet to achieve the same? > > Thanks > > On Thu, Jan 17, 2013 at 10:43 PM, Asta, Greg <[email protected]> > wrote: > > > Yeah, we achieved something similar using a simple "VIP". Once the > > leader election switches, the new leader can activate the VIP, while > > the old one deactivates it. DNS with a very short TTL is another way to > achieve this. > > > > -Greg > > > > -----Original Message----- > > From: Edward Ribeiro [mailto:[email protected]] > > Sent: Thursday, January 17, 2013 12:06 PM > > To: [email protected] > > Subject: Re: Zookeeper Coodination Service > > > > Yes, what you have just described is a sweet spot for Zookeeper. > > > > Based on your description, you want one of the servers as the leader > > and while having the others waiting. Take a look at "Leader Election > Recipe" > > in ZK Tutorials for how to implement this. If the leader goes offline > > then the other machines use ZK to run the election procedure and elect > > a new leader to serve requests. Of course, you will also need a > > "router" service that also listens to ZK so that it can redirect the > > requests to the right machine. > > > > Edward > > > > On Thu, Jan 17, 2013 at 2:02 PM, Saurabh Dutta <[email protected]> > > wrote: > > > > > Hi, > > > > > > I've a a simple tcp service which will listen on a port for incoming > > > requests from client. I'd like to have this same service run on > > > multiple servers in a failsafe manner. > > > > > > There will be a client which will initially write to server1 and if > > > it goes down i want the requests to be directed to server2. > > > > > > I'm tyring to write a a zookeeper coordinator which will keep my > > > services up and if one service goes down i want the other service to > > > take over and replace it. > > > > > > Please help me to explore if this can be done through zookeeper and > > > if yes how this can be achieved. > > > > > > Thanks, > > > Saurabh > > > > > > > ----- > > No virus found in this message. > > Checked by AVG - www.avg.com > > Version: 2012.0.2221 / Virus Database: 2638/5539 - Release Date: > > 01/17/13 > > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 2012.0.2221 / Virus Database: 2638/5539 - Release Date: 01/17/13 >
