shell脚本监控hadoop集群，实现集群组件宕机重启

短命女 2023-02-16 04:06 214阅读 0赞

### **一、实现原理** ###

> jps取角色的端口号，如果存在则跳过，否则启动角色，并把日志打印，记录角色重启记录。

**clusterMonitor.sh（主节点）**

#!/bin/bash
    echo '.......................................'
    QuorumPeerMain=$(jps | grep ' QuorumPeerMain')
    ZKFC=$(jps | grep ' DFSZKFailoverController')
    NameNode=$(jps | grep ' NameNode')
    DataNode=$(jps | grep ' DataNode')
    JournalNode=$(jps | grep ' JournalNode')
    ResourceManager=$(jps | grep ' ResourceManager')
    NodeManager=$(jps | grep ' NodeManager')
    HMaster=$(jps | grep ' HMaster')
    HRegionServer=$(jps | grep ' HRegionServer')
    echo $QuorumPeerMain
    echo $ZKFC
    echo $NameNode
    echo $DataNode
    echo $JournalNode
    echo $ResourceManager
    echo $NodeManager
    echo $HMaster
    echo $HRegionServer
    echo '.......................................'
    if [[ -z $QuorumPeerMain ]]; then
    	echo $(date) 'zookeeper is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $(zkServer.sh start) >> /home/logs/clusterStart.log
    elif [[ -z $ZKFC ]]; then
    	echo $(date) 'ZKFC is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) | hdfs --daemon start zkfc >> /home/logs/clusterStart.log
    fi	
    if [[ -z $NameNode ]]; then
    	echo $(date) 'NameNode is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HADOOP_HOME/sbin/start-all.sh) >> /home/logs/clusterStart.log
    fi	
    if [[ -z $DataNode ]]; then
    	echo $(date) 'DataNode is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HADOOP_HOME/sbin/start-all.sh) >> /home/logs/clusterStart.log
    fi	
    if [[ -z $JournalNode ]]; then
    	echo $(date) 'JournalNode is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HADOOP_HOME/sbin/start-all.sh) >> /home/logs/clusterStart.log
    fi	
    if [[ -z $ResourceManager ]]; then
    	echo $(date) 'ResourceManager is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HADOOP_HOME/sbin/start-all.sh) >> /home/logs/clusterStart.log
    fi	
    if [[ -z $NodeManager ]]; then
    	echo $(date) 'NodeManager is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HADOOP_HOME/sbin/start-all.sh) >> /home/logs/clusterStart.log
    fi	
    if [[ -z $HMaster ]]; then
    	echo $(date) 'HMaster is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HBASE_HOME/bin/start-hbase.sh) >> /home/logs/clusterStart.log
    fi	
    if [[ -z $HRegionServer ]]; then
    	echo $(date) 'HRegionServer is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HBASE_HOME/bin/start-hbase.sh) >> /home/logs/clusterStart.log
    fi
    echo '.......................................'

**clusterMonitor.sh（从节点）**

#!/bin/bash
    echo '.......................................'
    QuorumPeerMain=$(jps | grep ' QuorumPeerMain')
    DataNode=$(jps | grep ' DataNode')
    NodeManager=$(jps | grep ' NodeManager')
    HRegionServer=$(jps | grep ' HRegionServer')
    echo $QuorumPeerMain
    echo $DataNode
    echo $NodeManager
    echo $HRegionServer
    echo '.......................................'
    if [[ -z $QuorumPeerMain ]]; then
    	echo $(date) 'zookeeper is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $(zkServer.sh start) >> /home/logs/clusterStart.log
    fi
    if [[ -z $DataNode ]]; then
    	echo $(date) 'DataNode is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HADOOP_HOME/sbin/start-all.sh) >> /home/logs/clusterStart.log
    fi
    if [[ -z $NodeManager ]]; then
    	echo $(date) 'NodeManager is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HADOOP_HOME/sbin/start-all.sh) >> /home/logs/clusterStart.log
    fi
    if [[ -z $HRegionServer ]]; then
    	echo $(date) 'HRegionServer is not running.' >> /home/logs/clusterMonitor.log
    	echo $(date) $($HBASE_HOME/bin/start-hbase.sh) >> /home/logs/clusterStart.log
    fi
    echo '.......................................'

### **二、定时执行**  ###

vim /etc/crontab
    # 一个小时监控一次
    0  *  *  *  * root /home/shell/clusterMonitor.sh

### **三、运行效果** ###

**主节点执行 /home/shell/clusterMonitor.sh脚本**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMjYyNTkzNDIx_size_16_color_FFFFFF_t_70][]

**从节点执行 /home/shell/clusterMonitor.sh脚本**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMjYyNTkzNDIx_size_16_color_FFFFFF_t_70 1][]

### **四、脚本说明** ###

脚本名称： clusterMonitor.sh

日志路径1：/home/logs/clusterMonitor.log

日志路径2：/home/logs/clusterStart.log

clusterMonitor.log：打印当前节点角色没启动的信息

clusterStart.log：打印角色启动时控制台输出的信息

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMjYyNTkzNDIx_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200617110126260.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxMjYyNTkzNDIx,size_16,color_FFFFFF,t_70