第一章:逻辑结构
Mongodb 逻辑结构 MySQL逻辑结构
库database 库
集合(collection) 表
文档(document) 数据行
第二章:安装部署
1、系统准备
(1)redhat或centos6.2以上系统 (2)系统开发包完整 (3)ip地址和hosts文件解析正常 (4)iptables防火墙&SElinux关闭 (5)关闭大页内存机制 ######################################################################## root用户下 在vi /etc/rc.local最后添加如下代码 if test -f /sys/kernel/mm/transparent_hugepage/enabled; then echo never > /sys/kernel/mm/transparent_hugepage/enabled fi if test -f /sys/kernel/mm/transparent_hugepage/defrag; then echo never > /sys/kernel/mm/transparent_hugepage/defrag fi cat /sys/kernel/mm/transparent_hugepage/enabled cat /sys/kernel/mm/transparent_hugepage/defrag 其他系统关闭参照官方文档: https://docs.mongodb.com/manual/tutorial/transparent-huge-pages/ --------------- 为什么要关闭? Transparent Huge Pages (THP) is a Linux memory management system that reduces the overhead of Translation Lookaside Buffer (TLB) lookups on machines with large amounts of memory by using larger memory pages. However, database workloads often perform poorly with THP, because they tend to have sparse rather than contiguous memory access patterns. You should disable THP on Linux machines to ensure best performance with MongoDB. ############################################################################
2、创建所需用户, 组及所需目录结构
useradd mongod passwd mongod mkdir -p /mongodb/conf mkdir -p /mongodb/log mkdir -p /mongodb/data
chown -R mongod:mongod /mongodb
上传并解压软件到指定位置
[root@db01 data]# cd /data [root@db01 data]# tar xf mongodb-linux-x86_64-rhel70-3.6.12.tgz [root@db01 data]# cp -r /data/mongodb-linux-x86_64-rhel70-3.6.12/bin/ /mongodb
设置用户环境变量
su - mongod vi .bash_profile export PATH=/mongodb/bin:$PATH source .bash_profile
启动mongodb
mongod --dbpath=/mongodb/data --logpath=/mongodb/log/mongodb.log --port=27017 --logappend --fork
[mongod@server2 ~]$ mongo # 连接mongodb
配置参数介绍(配置文件位置及命名无要求, 参考代码最后几行)
YAML模式 NOTE: YAML does not support tab characters for indentation: use spaces instead. --系统日志有关 systemLog: destination: file path: "/mongodb/log/mongodb.log" --日志位置 logAppend: true --日志以追加模式记录 --数据存储有关 storage: journal: enabled: true dbPath: "/mongodb/data" --数据路径的位置 -- 进程控制 processManagement: fork: true --后台守护进程 pidFilePath: <string> --pid文件的位置,一般不用配置,可以去掉这行,自动生成到data中 --网络配置有关 net: bindIp: <ip> -- 监听地址 port: <port> -- 端口号,默认不配置端口号,是27017 -- 安全验证有关配置 security: authorization: enabled --是否打开用户名密码验证 ------------------以下是复制集与分片集群有关---------------------- replication: oplogSizeMB: <NUM> replSetName: "<REPSETNAME>" secondaryIndexPrefetch: "all" sharding: clusterRole: <string> archiveMovedChunks: <boolean> ---for mongos only replication: localPingThresholdMs: <int> sharding: configDB: <string> --- ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ YAML例子 cat > /mongodb/conf/mongo.conf <<EOF systemLog: destination: file path: "/mongodb/log/mongodb.log" logAppend: true storage: journal: enabled: true dbPath: "/mongodb/data/" processManagement: fork: true net: port: 27017 bindIp: 10.0.0.51,127.0.0.1 EOF mongod -f /mongodb/conf/mongo.conf --shutdown # 关闭mongodb mongod -f /mongodb/conf/mongo.conf # 启动mongodb
mongodb的关闭方式
mongod -f /mongodb/conf/mongo.conf --shutdown
mongodb 使用systemd管理
[root@db01 ~]# cat > /etc/systemd/system/mongod.service <<EOF [Unit] Description=mongodb After=network.target remote-fs.target nss-lookup.target [Service] User=mongod Type=forking ExecStart=/mongodb/bin/mongod --config /mongodb/conf/mongo.conf ExecReload=/bin/kill -s HUP $MAINPID ExecStop=/mongodb/bin/mongod --config /mongodb/conf/mongo.conf --shutdown PrivateTmp=true [Install] WantedBy=multi-user.target EOF [root@db01 ~]# systemctl restart mongod [root@db01 ~]# systemctl stop mongod [root@db01 ~]# systemctl start mongod
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