What is Zookeeper
a zookeeper is to provide coordinated services for users of distributed applications distributed software.
service provided
- Master-slave coordination
- The server node dynamically offline
- Unified Configuration Management
- Distributed shared lock
- Unified Name Service
The main function
Data management (storage, reading) program submitted by the user and provide data node monitoring service for user programs
Scenarios
Active acquisition program data collection on the collection server on the server, and the server needs to collect zookeeper monitoring working conditions, to prevent the machine hung cause data loss.
the role of zookeeper:
1, provide storage of data collection procedures progress
2, a service node listens
Figure Chi Chuan from large data video lessons