zookeeper-aware application server
TRANSCRIPT
Meet Apache ZooKeeper.He does coordination.
He watches our Solr-nodes.
Case 1: Failover
SolrCloud has redundancy.
Current solution:
Selected node fails…
…search is unavailable.
But we have redundancy?
I know this stuff, ask me!
ZooKeeper finds a suitable node…
…and selects new node on the fly.
DEMO
Case 2: Configfiles
«I want to change the log-level on all my servers.»
srv-01 srv-02 srv-03 srv-04
srv-05 srv-06 srv-07 srv-08
Centralized place for config.
Change config, watcher kicks in
DIPS ZookeeperWatcher API