(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
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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 byusing 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.
[mongod@db01~]$ mongod --dbpath=/mongodb/data --logpath=/mongodb/log/mongodb.log --port=27017--logappend --fork
about to fork child process, waiting until server is ready for connections.
forked process:2233
child process started successfully, parent exiting
[mongod@db01~]$ lsof -i:27017COMMANDPIDUSERFDTYPEDEVICESIZE/OFFNODENAME
mongod 2233 mongod 11u IPv4258080t0 TCP localhost:27017(LISTEN)
[mongod@db01 ~]$ mongod -f /mongodb/conf/mongo.conf --shutdown
killing process with pid: 2233
[mongod@db01 ~]$ mongod -f /mongodb/conf/mongo.conf
about to fork child process, waiting until server is ready for connections.
forked process: 2286
child process started successfully, parent exiting
test:登录时默认存在的库
管理MongoDB有关的系统库
admin库:系统预留库,MongoDB系统管理库
local库:本地预留库,存储关键日志
config库:MongoDB配置信息库
show databases/show dbs
show tables/show collections
use admin
db/select database()
[mongod@db01~]$ vim /mongodb/conf/mongo.conf 加最后边
security:
authorization: enabled
5.6 重启mongodb
[mongod@db01~]$ mongod -f /mongodb/conf/mongo.conf --shutdown
killing process with pid: 2717[mongod@db01~]$ mongod -f /mongodb/conf/mongo.conf
about to fork child process, waiting until server is ready for connections.
forked process: 2868
child process started successfully, parent exiting