MongoDB 数据库简单介绍(安装篇)
1、安装准备 [root@chen download]# tar zxvf mongodb-linux-x86_64-2.2.0.tgz [root@chen download]# cp mongodb-linux-x86_64-
1、安装准备
[root@chen download]# tar zxvf mongodb-linux-x86_64-2.2.0.tgz
[root@chen download]# cp mongodb-linux-x86_64-2.2.0 /usr/local/mongodb -r
2、创建数据库文件夹与日志文件
[root@chen download]# mkdir /usr/local/mongodb/data
[root@chen download]# touch /usr/local/mongodb/logs
设置开机自启动
将mongodb启动项目追加入rc.local保证mongodb在服务器开机时启动
[root@chen download]# echo "/usr/local/mongodb/bin/mongod --dbpath=/usr/local/mongodb/data –logpath=/usr/local/mongodb/logs –logappend --auth –port=27017" >> /etc/rc.local
启动mongodb
cd到mongodb目录下的bin文件夹启动mongodb
//下面这个是需要权限的登录方式, 用户连接需要用户名和密码
[root@chen download]# /usr/local/mongodb/bin/mongod --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/logs --logappend --auth --port=27017 --fork
//这个是不需要密码的
[root@chen download]# /usr/local/mongodb/bin/mongod --dbpath=/usr/local/mongodb/data --logpath=/usr/local/mongodb/logs --logappend --port=27017 --fork
参数解释: --dbpath 数据库路径(数据文件)
--logpath 日志文件路径
--master 指定为主机器
--slave 指定为从机器
--source 指定主机器的IP地址
--pologSize 指定日志文件大小不超过64M.因为resync是非常操作量大且耗时,,最好通过设置一个足够大的oplogSize来避免resync(默认的 oplog大小是空闲磁盘大小的5%)。
--logappend 日志文件末尾添加
--port 启用端口号
--fork 在后台运行
--only 指定只复制哪一个数据库
--slavedelay 指从复制检测的时间间隔
--auth 是否需要验证权限登录(用户名和密码)
-h [ --help ] show this usage information
--version show version information
-f [ --config ] arg configuration file specifying additional options
--port arg specify port number
--bind_ip arg local ip address to bind listener - all local ips
bound by default
-v [ --verbose ] be more verbose (include multiple times for more
verbosity e.g. -vvvvv)
--dbpath arg (=/data/db/) directory for datafiles 指定数据存放目录
--quiet quieter output 静默模式
--logpath arg file to send all output to instead of stdout 指定日志存放目录
--logappend appnd to logpath instead of over-writing 指定日志是以追加还是以覆盖的方式写入日志文件
--fork fork server process 以创建子进程的方式运行
--cpu periodically show cpu and iowait utilization 周期性的显示cpu和io的使用情况
--noauth run without security 无认证模式运行
--auth run with security 认证模式运行
--objcheck inspect client data for validity on receipt 检查客户端输入数据的有效性检查
--quota enable db quota management 开始数据库配额的管理
--quotaFiles arg number of files allower per db, requires --quota 规定每个数据库允许的文件数
--appsrvpath arg root directory for the babble app server
--nocursors diagnostic/debugging option 调试诊断选项
--nohints ignore query hints 忽略查询命中率
--nohttpinterface disable http interface 关闭http接口,默认是28017
--noscripting disable scripting engine 关闭脚本引擎
--noprealloc disable data file preallocation 关闭数据库文件大小预分配
--smallfiles use a smaller default file size 使用较小的默认文件大小
--nssize arg (=16) .ns file size (in MB) for new databases 新数据库ns文件的默认大小
--diaglog arg 0=off 1=W 2=R 3=both 7=W+some reads 提供的方式,是只读,只写,还是读写都行,还是主要写+部分的读模式
--sysinfo print some diagnostic system information 打印系统诊断信息
--upgrade upgrade db if needed 如果需要就更新数据库
--repair run repair on all dbs 修复所有的数据库
--notablescan do not allow table scans 不运行表扫描
--syncdelay arg (=60) seconds between disk syncs (0 for never) 系统同步刷新磁盘的时间,默认是60s
Replication options:
--master master mode 主复制模式
--slave slave mode 从复制模式
--source arg when slave: specify master as
--only arg when slave: specify a single database to replicate 当为从时,指定需要从主复制的单一库
--pairwith arg address of server to pair with
--arbiter arg address of arbiter server 仲裁服务器,在主主中和pair中用到
--autoresync automatically resync if slave data is stale 自动同步从的数据
--oplogSize arg size limit (in MB) for op log 指定操作日志的大小
--opIdMem arg size limit (in bytes) for in memory storage of op ids指定存储操作日志的内存大小
Sharding options:
--configsvr declare this is a config db of a cluster 指定shard中的配置服务器
--shardsvr declare this is a shard db of a cluster 指定shard服务器
进入数据库的CLI管理界面
cd到mongodb目录下的bin文件夹,执行命令./mongo
运行如下:
若数据库出现如不能连上,则是一个data目录下的mongod.lock文件的问题,可以用如下的修复的命令,
mongod --repair

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