zookeeper_kazoo的使用及znode

使用kazoo模块,用python3来操作zookeeper

#新建znode节点
from kazoo import client as kz_client 
zk = kz_client.KazooClient(hosts='10.47.199.136:2015')   
zk.start(timeout=5)

try:
    zk.create('/yy')
except Exception as e:
    print(e)
for i in range(1000,9999999):
    try:
       zk.create('/yy/e%s'%i)
       print(i,end='')
    except Exception as e:
       print(e) 
zk.stop()

#删除znode

from kazoo import client as kz_client 
zk = kz_client.KazooClient(hosts='10.47.199.136:2015,10.47.199.133:2015,10.47.199.132:2015')
zk.start(timeout=5)

for i in range(4399285,9999999):
    if zk.exists('/yy/e%s'%i):
        try:
            zk.delete('/yy/e%s'%i)
            print(i,end=' ')
        except Exception as e:
            pass
zk.stop()


########################
from kazoo import client as kz_client 
zk = kz_client.KazooClient(hosts='10.47.199.136:2015')   
zk.start(timeout=5)
def my_func(event):
    print("*************")

children = zk.get_children("/test", watch=my_func) 

def connection_listener(state):
    if state == "LOST":
        # Register somewhere that the session was lost
        pass
    elif state == "SUSPENDED":
        # Handle being disconnected from Zookeeper
        pass
    else:
        # Handle being connected/reconnected to Zookeeper
        pass
#zk.add_listener(connection_listener)

create -s /NODE_NAME   DATA    # -e参数为创建临时节点，如果不带参数则创建持久节点

create -s -e /NODE_NAME   DATA   ##创建临时顺序节点

zk集群确保存在leader状态服务,在leader中执行
echo mntr |nc localhost 2015

返回:
zk_version	3.4.10-39d3a4f269333c922ed3db283be479f9deacaa0f, built on 03/23/2017 10:13 GMT
zk_avg_latency	0
zk_max_latency	0
zk_min_latency	0
zk_packets_received	4
zk_packets_sent	3
zk_num_alive_connections	1
zk_outstanding_requests	0
zk_server_state	leader
zk_znode_count	1013
zk_watch_count	0
zk_ephemerals_count	1
zk_approximate_data_size	8188
zk_open_file_descriptor_count	33
zk_max_file_descriptor_count	102400
zk_followers	2                       ###zk_followers数量
zk_synced_followers	2                   ###zk_followers同步数量
zk_pending_syncs	0