zookeeper的管理功能

一，查看当前zookeeper的版本

[liuhongdi@localhost ~]$ echo stat|nc 127.0.0.1 2181
Zookeeper version: 3.5.6-c11b7e26bc554b8523dc929761dd28808913f091, built on 10/08/2019 20:18 GMT

说明：架构森林是一个专注架构的博客，地址：https://www.cnblogs.com/architectforest

         对应的源码可以访问这里获取： https://github.com/liuhongdi/

 说明：作者:刘宏缔 邮箱: 371125307@qq.com

二， 查看当前服务器上管理的Watcher的概要信息

命令: wchs

[liuhongdi@localhost ~]$ echo wchs | nc localhost 2181
1 connections watching 1 paths
Total watches:1

三，查看当前服务器上管理的Watcher的详细信息：以会话为单位进行归组

[liuhongdi@localhost ~]$ echo wchc | nc localhost 2181
0x10000cf102c0000
    /lockdemo

四，查看当前服务器上管理的Watcher的详细信息：节点路径为单位进行归组

[liuhongdi@localhost ~]$ echo wchp | nc localhost 2181
/lockdemo
    0x10000cf102c0000

五，输出比stat命令更为详尽的服务器统计信息

[liuhongdi@localhost ~]$ echo mntr | nc localhost 2181
zk_version    3.5.6-c11b7e26bc554b8523dc929761dd28808913f091, built on 10/08/2019 20:18 GMT
zk_avg_latency    0
zk_max_latency    41
zk_min_latency    0
zk_packets_received    4786
zk_packets_sent    4789
zk_num_alive_connections    2
zk_outstanding_requests    0
zk_server_state    standalone
zk_znode_count    7
zk_watch_count    2
zk_ephemerals_count    0
zk_approximate_data_size    82
zk_open_file_descriptor_count    47
zk_max_file_descriptor_count    4096

六，检查zookeeper服务器是否正在运行

[liuhongdi@localhost ~]$ echo ruok | nc localhost 2181
imok

七，输出zookeeper服务器的运行环境

[liuhongdi@localhost ~]$ echo envi | nc localhost 2181

说明：输出包括了java版本，linux版本,zookeeper运行用户，内存使用情况

八，查看当前zookeeper服务器上所有连接的信息

[liuhongdi@localhost ~]$ echo cons | nc localhost 2181

九，使用zktop做为管理工具

1,下载地址

https://github.com/phunt/zktop

2，解压缩

[root@localhost source]# unzip zktop-master.zip 
[root@localhost source]# cd zktop-master/
[root@localhost zktop-master]# ls
LICENSE.txt  README.textile  setup.cfg  setup.py  zktop.py

3，运行zktop

[root@localhost zktop-master]# /usr/bin/python3.6 ./zktop.py --servers "localhost:2181"