presto集群管理工具

presto-cluster-tool

1. support presto-0.1xx/0.2xx
    	
    env: 
      python3 + fabric1.x
     pip install 'fabric<2.0'
     pip instlal fabric3
     pip install presto-python-client
     
     see 
     http://www.fabfile.org/installing-1.x.html  
     https://pypi.org/project/presto-python-client
   

2. usage:
     `fab -f presto-cluster-tool.py deployCli|deploy|reload|start|stop|restart|rollback`
     
    1. 修改脚本对应的coordinator_hosts与worker_hosts
    2. 修改脚本presto_install_dir与presto_backup_dir（对应服务器安装目录）
    3. 将presto-server|client的tar包放入pack目录中
   
    deployCli:         发布presto-client
    deploy:            发布presto集群
    reload:            重新加载配置文件
    start:             启动集群
    stop:              停用集群
    restart:           重启集群
    rollback:          回滚操作(仅一次)