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一、描述
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大早上刚到公司就发现报警，磁盘容量告警，zookeeper集群服务器报警。
二、处理过程
查看磁盘空间
df -h
2.确认那个目录占用空间比较多，发现是zookeeper
修改zookeeper参数文件（版本3.4.6）
vi zoo.cfg
# The number of snapshots to retain in dataDir
autopurge.snapRetainCount=20 #保留log和snapshot各20个
# Purge task interval in hours
# Set to "0" to disable auto purge feature
autopurge.purgeInterval=1 #每小时清理一次
3.查看状态
$ /usr/local/RoilandGroup/zookeeper/bin/zkServer.sh status
JMX enabled by default
Using config: /usr/local/RoilandGroup/zookeeper/bin/../conf/zoo.cfg
Mode: leader
4.关闭服务
$ /usr/local/RoilandGroup/zookeeper/bin/zkServer.sh stop
JMX enabled by default
Using config: /usr/local/RoilandGroup/zookeeper/bin/../conf/zoo.cfg
Stopping zookeeper ... STOPPED
5.重启服务
$ /usr/local/RoilandGroup/zookeeper/bin/zkServer.sh start
JMX enabled by default
Using config: /usr/local/RoilandGroup/zookeeper/bin/../conf/zoo.cfg
Starting zookeeper ... STARTED
[hadoop@host-10-60-40-37 conf]$ jps
8118449 QuorumPeerMain
6.zookeeper集群中每一个节点都需要修改参数文件，然后重启服务.
至于为什么这么修改，是否还有其他的方式，大家可以看官方文档，或者比较懒就百度。
7.理解每一个参数文件，看注释就行
less zoo.cfg
# The number of milliseconds of each tick
tickTime=2000
# The number of ticks that the initial
# synchronization phase can take
initLimit=10
# The number of ticks that can pass between
# sending a request and getting an acknowledgement
syncLimit=5
# the directory where the snapshot is stored.
# do not use /tmp for storage, /tmp here is just
# example sakes.
dataDir=/data/zookeeper
# the port at which the clients will connect
clientPort=2181
# the maximum number of client connections.
# increase this if you need to handle more clients
#maxClientCnxns=60
#
# Be sure to read the maintenance section of the
# administrator guide before turning on autopurge.
#
# http://zookeeper.apache.org/doc/current/zookeeperAdmin.html#sc_maintenance
#
# The number of snapshots to retain in dataDir
autopurge.snapRetainCount=20
# Purge task interval in hours
# Set to "0" to disable auto purge feature
autopurge.purgeInterval=1
#####################################################
#####################################################
#####################################################
server.1=10.10.10.11:2888:3888
server.2=10.10.10.12:2888:3888
server.3=10.10.10.13:2888:3888
server.4=10.10.10.14:2888:3888
server.5=10.10.10.15:2888:3888