自动安装MongoDB Master, Slave, Arbiter脚本

发现有人抄袭我的文章，竟然不写出处，想想也挺开心的，还会被抄袭，以前上初中的时候都是抄袭别人的作业。这篇文章我都改动过好多次了，那哥们抄袭的还是之前有点bug的代码。望他看到后，重新抄一遍，免得误人子弟了。

最近有一个新项目需要用到MongoDB的Master，Slave，Arbiter的架构，去官网翻了一下文档，写了一个简陋的脚本。脚本可以在我的github上找到https://github.com/sangrealest。

安装之前确保已经提前设置好dns，或者hosts文件已经设置好。防火墙做好相应的规则，或者关闭防火墙。

首先生成mongodb的证书文件，然后copy到Master, Slave, Arbiter目录下，并添加到配置文件里面。

openss rand -base64 741 >/etc/mongodb.keychmod 600 /etc/mongodb.key

#!/bin/bash#Author:Shanker#set -x#set -o nounsetsource ./mongo_configfunction createConfig(){    role=$1    mongoConfig="./mongod-$role"    if [ ! -f "$mongoConfig" ]    then        echo "dbpath=/var/lib/mongodb-$role" >>$mongoConfig        echo "logpath=/var/log/mongodb-$role/mongodb.log" >>$mongoConfig        echo "logappend=true" >>$mongoConfig        echo "keyFile=$MongoKeyFile" >>$mongoConfig        if [ "$role" == "master" ]        then            echo "port=$MasterMongoPort" >>$mongoConfig        elif [ "$role" == "slave" ]        then            echo "port=$SlaveMongoPort" >>$mongoConfig        elif [ "$role" == "arbiter" ]        then            echo "port=$ArbiterMongoPort" >>$mongoConfig        fi        echo "nohttpinterface=true" >>$mongoConfig        echo "nojournal=true" >>$mongoConfig        echo "replSet=rs0" >>$mongoConfig        cp $mongoConfig /etc/        chmod 644 /etc/$mongoConfig    fi}function installMongoService(){        echo "installing mongoserver"    if [ ! -f "/usr/bin/mongo" ]    then        tar zxvf ./mongodb-linux-x86_64-2.4.9.tgz        cd ./mongodb-linux-x86_64-2.4.9/bin/        cp * /usr/bin        cd ../..    else        echo "mongo server file already exist"    fi    cp mongod-$1.sh /etc/init.d/    chmod 755 /etc/init.d/mongod-$1.sh    /etc/init.d/mongod-$1.sh start    i=1    until ((i=="0"))    do        /bin/cat /var/log/mongodb-$1/mongodb.log | grep "waiting for connection"        i=$?        sleep 3        echo "waiting for mongodb ready"    done    echo "mongodb is ready"    sleep 4}function setupReplSet(){    echo "setup mongodb replicationset"    member="$SlaveName:$SlaveMongoPort"    echo "rs.initiate()" | /usr/bin/mongo $MasterName:$MasterMongoPort    sleep 3    echo "rs.add(\"$count\")" | /usr/bin/mongo $MasterName:$MasterMongoPort    sleep 3    echo "rs.addArb(\"$ArbiterName:$ArbiterMongoPort\")"|/usr/bin/mongo $MasterName:$MasterMongoPort    echo "rs.status()"|/usr/bin/mongo $MasterName:$MasterMongoPort}case $1 in    "master"|"Master")        createConfig "master"        installMongoService "master"        setupReplSet         ;;    "slave"|"Slave")        createConfig "slave"        installMongoService "slave"        ;;    "arbiter"|"Arbiter")        createConfig "arbiter"        installMongoService "arbiter"        ;;    "uninstall"|"Uninstall")        echo "this will remove all mongo files!!!"        if [ -f "/usr/bin/pkill" ]        then             pkill -9 mongod        else            kill -9 `ps aux | grep mongo | grep -v grep | awk -F" " '{print $2}'`        fi        rm -rf /etc/mongo*        rm -rf /etc/init.d/mongo*        rm -rf /var/lib/mongo*        rm -rf /var/log/mongo*        rm -rf /usr/bin/mongo*        rm -rf /var/run/mongo*        ;;    *)        echo "Please inpute $0 Master, slave or ARBITER"        exit 0         ;;esac

$ cat mongo_config SlaveIP='10.128.129.45'SlaveName='Databse-Slave'SlaveMongoPort='27017'ArbiterIP='10.128.129.46'ArbiterName='Database-Arbiter'ArbiterMongoPort='27017'MasterIP='10.128.129.44'MasterName='Database-Master'MasterMongoPort='27017'#Mongos configMongosPort='27015'#Mongo COnfig Server ConfigMongoConfigIP='127.0.0.1'MongoConfigName='Database-Config'MongoConfigDBPath='/var/lib/mongodc'MongoConfiglogpath='/var/log/mongodc'MongoConfigPort='27014'MongoKeyFile='/etc/mongodb.key'

$ cat mongod-master.sh #!/bin/bash#source /etc/mongod-start.confDBLocation='/var/lib/mongodb-master/'LogFolder='/var/log/mongodb-master/'StartProcess='/usr/bin/mongod -f /etc/mongod-master'PidFile='/var/lib/mongodb-master/mongod-master.lock'uid=`id | cut -d\( -f1 | cut -d= -f2`if [ ! -d "$DBLocation" ];thenmkdir $DBLocationfi if [ ! -d "$LogFolder" ];thenmkdir $LogFolderfi if [ ! -f "$PidFile" ];thentouch $PidFilefi PidFileNum=`/bin/cat $PidFile`CurrentPid=`ps aux|grep "$StartProcess"|grep -v "grep"|awk -F" " '{print $2}'`ProcessStart(){        if [ "x$CurrentPid" != "x" ];then                echo "mongod process already runing!! PID is $CurrentPid. "        else                exec $StartProcess &  sleep 2                NewPidNum=`ps aux|grep "$StartProcess"|grep -v "grep"|awk -F" " '{print $2}'`                echo "mongod process is running, pid is $NewPidNum"                #PidFileNum=`/bin/cat $PidFile`                #                #if [ $NewPidNum != $PidFileNum ];then                #       echo "Process is runing, but pid number is not match the pid file."                #       echo "pid number is $NewPidNum"                #fi        fi}ProcessStop(){        if [ "x$CurrentPid" == "x" ];then                echo "mongod process already Stop!! "        else                kill -15 $CurrentPid                sleep 3                NewPidNum=`ps aux|grep "\"$StartProcess\""|grep -v "grep"|awk -F" " '{print $2}'`                if [ "x$NewPidNum" == "x" ];then                        echo "mongod process is stop."                else                        kill -9 $NewPidNum                        if [ "x$NewPidNum" != "x" ];then                                echo "Can't kill mongod process, please call system administrator."                        else                                echo "mongod is stop."                        fi                fi        fi}ProcessStatus(){        if [ "x$CurrentPid" != "x" ];then                echo "mongod process is runing!! PID is $CurrentPid. "        else                echo "mongod not running."        fi}case "$1" in  start)        ProcessStart        ;;  stop)        ProcessStop        ;;  restart)        ProcessStop        CurrentPid=''        ProcessStart        ;;  status)        ProcessStatus        ;;  *)        echo $"Usage: mongod {start|stop|status|restart}"        RETVAL=2        ;;esac