Please take a look at https://cwiki.apache.org/confluence/display/ZOOKEEPER/FAQ
Can I run an ensemble cluster behind a load balancer? 2011. 5. 23., 오후 2:38, Paul Sutter 작성: > A single DNS name can map to several IP addresses, and this complete list of > addresses is available to any DNS client. > > If the Zookeeper client were to interpret DNS names so as to allow multiple > IP addresses from one DNS name, a single DNS name in the Zookeeper client > config to represent an arbitrary list of servers, so that the list of > servers could be changed centrally with no client config changes. > > This is a widely supported standard feature of DNS. For example, we use this > at Quantcast to power the second most requested URL on the Internet, and we > get nice clean random distribution of client requests to IP addresses > despite all the weird DNS servers, proxies, and browsers out there. > > Here's an example where edge.quantserve.com translates into 8 different > server IPs. Web browsers select one of these at random. Zookeeper should do > the same to simplify client configurations. > > $ nslookup edge.quantserve.com > Server: 192.168.1.1 > Address: 192.168.1.1#53 > > Non-authoritative answer: > edge.quantserve.com canonical name = map-js.quantserve.com.akadns.net. > map-js.quantserve.com.akadns.net canonical name = > anycast-americas.quantserve.com.akadns.net. > Name: anycast-americas.quantserve.com.akadns.net > Address: 64.94.107.58 > Name: anycast-americas.quantserve.com.akadns.net > Address: 64.94.107.63 > Name: anycast-americas.quantserve.com.akadns.net > Address: 64.94.107.37 > Name: anycast-americas.quantserve.com.akadns.net > Address: 64.94.107.39 > Name: anycast-americas.quantserve.com.akadns.net > Address: 64.94.107.23 > Name: anycast-americas.quantserve.com.akadns.net > Address: 64.94.107.46 > Name: anycast-americas.quantserve.com.akadns.net > Address: 64.94.107.24 > Name: anycast-americas.quantserve.com.akadns.net > Address: 64.94.107.20
