centos7 mongoDB 启动与停止、环境搭建

一、环境搭建

Step 1: 禁用 SELINUX=disabled

[root@k8s-master conf]# vi /etc/selinux/config

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
# SELINUX=disabled
SELINUX=disabled
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected.
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

Step 2: 下载安装文件

下载地址： https://www.mongodb.org/downloads. 
或者直接在命令提示符下使用curl命令下载
curl -O https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-3.0.6.tgz


Step 3: 解压下载的文件
# pwd
/usr/local/src
# tar -xvf mongodb-linux-x86_64-rhel62-3.0.6.gz  ###注，本文直接从网站下载，所以文件为.gz


Step 4: 复制解压文件到运行目录
# mkdir -p /var/lib/mongodb
# cp -R -n /usr/local/src/mongodb-linux-x86_64-rhel62-3.0.6/. /var/lib/mongodb/


Step 5: 设置环境变量
# vi   /etc/profile
export PATH=/var/lib/mongodb/bin:$PATH
# source /etc/profile


Step 6: 创建数据目录
# mkdir -p /data/mongodata

# mkdir -pv /data/mongodata/{rs1,rs2,rs3}

# mkdir -pv /var/lib/mongodb/conf

二，启动方式

 1、基于命令行方式启动mongodb
# mongod --dbpath=/data/mongodata/rs1 --logpath=/data/mongodata/rs1/rs1.log &


缺省端口为
[root@node3 rs1]# netstat -nltp|grep mongod
tcp        0      0 0.0.0.0:27017               0.0.0.0:*                   LISTEN      5062/mongod 


2、基于配置文件的命令行启动
vi /var/lib/mongodb/conf/rs2.conf


port = 27000
dbpath = /data/mongodata/rs2
logpath = /data/mongodata/rs2/rs2.log
smallfiles = true
fork = true
pidfilepath = /var/run/mongo.pid


# mongod --config /var/lib/mongodb/conf/rs2.conf &




# netstat -nltp|grep 27000
tcp        0      0 0.0.0.0:27000               0.0.0.0:*                   LISTEN      5356/mongod    


3、以守护进程方式启动mongodb
# mongod --dbpath=/data/mongodata/rs3 --logpath=/data/mongodata/rs1/rs3.log --fork --port 28000


# netstat -nltp|grep mongod
tcp        0      0 0.0.0.0:28000               0.0.0.0:*                   LISTEN      5465/mongod         
tcp        0      0 0.0.0.0:27017               0.0.0.0:*                   LISTEN      5435/mongod         
tcp        0      0 0.0.0.0:27000               0.0.0.0:*                   LISTEN      5448/mongod

4、使用系统服务的方式启动mogodb

4.1 新建配置文件

#cd /var/lib/mongodb/conf

# vi  mongodb.conf
port = 27017
dbpath = /data/mongodata/rs1
logpath = /data/mongodata/rs1/rs1.log
smallfiles = true
fork = true
pidfilepath = /var/run/mongo.pid

4.2 新建脚本

#vi /etc/init.d/mongod

		#!/bin/sh  
		# chkconfig:  

		#MogoDB home directory  
		MONGODB_HOME=/var/lib/mongodb

		#mongodb command  
		MONGODB_BIN=$MONGODB_HOME/bin/mongod

		#mongodb config file
		MONGODB_CONF=$MONGODB_HOME/conf/mongodb.conf

		#mongodb PID
		MONGODB_PID=/var/run/mongo.pid

		#set open file limit
		SYSTEM_MAXFD=65535

		MONGODB_NAME="mongodb"
		. /etc/rc.d/init.d/functions

		if [ ! -f $MONGODB_BIN ]
		then
				echo "$MONGODB_NAME startup: $MONGODB_BIN not exists! "  
				exit
		fi

		start(){
			 ulimit -HSn $SYSTEM_MAXFD
			 $MONGODB_BIN --config="$MONGODB_CONF"  --fork ##added 
			 ret=$?
			 if [ $ret -eq 0 ]; then
				action $"Starting $MONGODB_NAME: " /bin/true
			 else
				action $"Starting $MONGODB_NAME: " /bin/false
			 fi

		}

		stop(){
				PID=$(ps aux |grep "$MONGODB_NAME" |grep "$MONGODB_CONF" |grep -v grep |wc -l) 
				if [[ $PID -eq 0  ]];then
				action $"Stopping $MONGODB_NAME: " /bin/false
				exit
				fi
				kill -HUP `cat $MONGODB_PID`
				ret=$?
				if [ $ret -eq 0 ]; then
						action $"Stopping $MONGODB_NAME: " /bin/true
						rm -f $MONGODB_PID
				else   
						action $"Stopping $MONGODB_NAME: " /bin/false
				fi

		}

		restart() {

				stop
				sleep 2
				start
		}

		case "$1" in
				start)
						start
						;;
				stop)
						stop
						;;
				status)
				status $prog
						;;
				restart)
						restart
						;;
				*)
						echo $"Usage: $0 {start|stop|status|restart}"
		esac

[root@k8s-master conf]# service mongod start
Starting mongod (via systemctl):                           [  OK  ]

三、停止

service mongod stop