简介
MongoDB是一种面向文档的，由撰写而成，以此来解决应用程序开发社区中的大量现实问题。2007年10月，MongoDB由团队所发展。2009年2月首度推出。
##mongodb集群部署步骤:
#全局配置
mkdir -pv /data/soft
cd /data/soft/
wget
tar -xf mongodb-linux-x86_64-rhel70-3.2.8.tgz -C /usr/local/
cd /usr/local/
ln -sv mongodb-linux-x86_64-rhel70-3.2.8/ mongodb
mkdir -p /usr/local/mongodb/data
cat >> /etc/profile << "EOF"
export PATH=$PATH::/usr/local/mongodb/bin
EOF
source /etc/profile
mkdir -p /usr/local/mongodb/{master,arbiter,slave}/data
#主节点/仲裁节点：
192.168.1.120
备节点：
192.168.1.121/192.168.1.122
#主上的配置
cat > /usr/local/mongodb/mongodb-master.conf << "EOF"
port=27017
dbpath= /usr/local/mongodb/master/data
logpath= /usr/local/mongodb/master/mongodb.log
logappend=true
fork=true
maxConns=500
#auth = true
replSet=ht
oplogSize=10000
EOF
cat > /usr/local/mongodb/mongodb-arbiter.conf << "EOF"
port=37017
dbpath= /usr/local/mongodb/arbiter/data
logpath= /usr/local/mongodb/arbiter/mongodb.log
logappend=true
fork=true
maxConns=500
#auth = true
replSet=ht
oplogSize=10000
EOF
#从上的配置
cat > /usr/local/mongodb/mongodb-slave.conf << "EOF"
port=27017
dbpath= /usr/local/mongodb/slave/data
logpath= /usr/local/mongodb/slave/mongodb.log
logappend=true
fork=true
maxConns=500
#auth = true
replSet=ht
oplogSize=10000
EOF
#主的服务启动脚本
cat > /lib/systemd/system/mongodb-master.service << "EOF"
[Unit]
Description=mongodb
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/mongodb-master.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/usr/local/mongodb/bin/mongod --shutdown -f /usr/local/mongodb-master.conf
PrivateTmp=true
[Install]
WantedBy=multi-user.target
EOF
chmod 755 /lib/systemd/system/mongodb-master.service
systemctl daemon-reload
systemctl enable mongodb-master.service
systemctl restart mongodb-master.service
systemctl status mongodb-master.service
cat > /lib/systemd/system/mongodb-arbiter.service << "EOF"
[Unit]
Description=mongodb
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/mongodb-arbiter.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/usr/local/mongodb/bin/mongod --shutdown -f /usr/local/mongodb-arbiter.conf
PrivateTmp=true
[Install]
WantedBy=multi-user.target
EOF
chmod 755 /lib/systemd/system/mongodb-arbiter.service
systemctl daemon-reload
systemctl enable mongodb-arbiter.service
systemctl restart mongodb-arbiter.service
systemctl status mongodb-arbiter.service
#从的服务启动脚本
cat > /lib/systemd/system/mongodb-slave.service << "EOF"
[Unit]
Description=mongodb
After=network.target remote-fs.target nss-lookup.target
[Service]
Type=forking
ExecStart=/usr/local/mongodb/bin/mongod -f /usr/local/mongodb/mongodb-slave.conf
ExecReload=/bin/kill -s HUP $MAINPID
ExecStop=/usr/local/mongodb/bin/mongod --shutdown -f /usr/local/mongodb-slave.conf
PrivateTmp=true
[Install]
WantedBy=multi-user.target
EOF
chmod 755 /lib/systemd/system/mongodb-slave.service
systemctl daemon-reload
systemctl enable mongodb-slave.service
systemctl restart mongodb-slave.service
systemctl status mongodb-slave.service
#主上集群控制
mongo 127.0.0.1:27017/admin
use admin
cfg={_id:"ht", members:[{_id:0,host:'192.168.1.120:27017',priority:3}, {_id:1,host:'192.168.1.121:27017',priority:2}, {_id:2,host:'192.168.1.122:27017',priority:1}, {_id:3,host:'192.168.1.121:37017',arbiterOnly:true}]};
rs.initiate(cfg);
rs.status();
rs.slaveOk();