Linux

linux Performance tuning methodology of system database server

One ,I/O Tuning in progress I/O Many decisions have to be made when tuning . Is the original device or file system used ? Whether to use direct ...
2020-10-29 09:53 views 4

Network error problem :RTNETLINK answers: File exists

Network error problem :RTNETLINK answers: File exists Error paste ：[root@localhost network-scripts]# systemctl restart networkJob for network.serv...
2020-08-18 10:02 views 3

ping Add time information

If you want to achieve ping Add time information , And then save it to a file in real time , Well, then awk combination 1, only need ping informat...
2020-08-17 22:52 views 3

Linux Common basic commands View help documents

In our use Linux When you order , How do you know what options are available under this command ?    （ One ） command --help    It's usually Linux...
2020-08-17 02:04 views 3

Centos6.5 Installation procedure （U Disk installation ）

The following dellR720 take as an example   Restart the machine by pressing F11 enter bootmanager, choice biosbootMenu  choice FrontUSB choice ins...
2020-08-15 05:21 views 16

CentOS7 Turn off the firewall

CentOS6 Turn off the firewall using the following command ,// Temporarily Closed serviceiptablesstop// Do not start chkconfigiptablesoffCentOS7 If ...
2020-08-06 09:52 views 2

Linux pid_t Definition of type

pid_t Type in Linux It is used to define process in environment programming ID, The header file needs to be introduced , First look at the header f...
2020-08-05 03:10 views 12

【Linux kernel 】 memory management （ One ）

For memory management , We need to know a few first _linux memory management
2020-08-02 05:37 views 4

Linux build Mysql Master slave server

When building a server, the database can be said to be the bottleneck of the server , When the server pressure is high, most of the bottlenecks ar...
2020-08-02 05:37 views 5

Linux Next restart Oracle database

1. with oracle User login linux2. with sysdba Sign in ：sqlplus / as sysdba3. Start the database , Enter the command ： startup4. close database , En...
2020-08-02 05:37 views 4
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