This article mainly describes how to use Udev to set user-defined device names in Oracle Linux 7. The Setup method in Oracle Linux 7 is significantly different from previous Linux versions.
The following example pairs the/DEV/SDB,/DEV/SDC by setting
LVM logical Volumn Manager Logical Volume management
can increase or decrease the size of the volume space freely
PV Physical volumn (physical volume) The actual partitioning device is zoned PV, PV is the LVM physical mark
VG Volumn Group (volume
Recently managed a number of machines, there is a need to unify the change of an account username password, such as the QA account password changed to 1234, and later for scripting, very convenient implementation, but also used to modify the user's
Change root password and restore MySQL tutorial root userI accidentally deleted the MySQL root account. What am I going to do? "and" I lost my root password? This problem is met, then you touch this kind of problem is to back up the data, reinstall
Shell script restarts MySQL password
Note: Remember to give this script the Execute permission Oh. (chmod u+x reset_mysql_root_password.sh)
This shell script is as follows:
The code is as follows
Copy Code
This is my set. Dynamic Tree topic: Http://acm.hust.edu.cn/vjudge/contest/view.action?cid=25242#overview
Let's start by saying what a dynamic tree is. Dynamic trees can maintain a dynamic forest, supporting the merging of trees (two trees into a
1. PrefaceThere are three ways to install MySQL: RPM installation, binary package installation, source package installation. These 3 various ways each have the characteristic, the main characteristic refer to the following table. In real-world
First of all, we're using the centOS6 version of Linux.Install MySQL:1. See if there are any installation packagesYum List mysql*2, to install MySQL: In general, we installed on the server side is the service side ( MySQL - server 或 mysql-devel )Yum
CentOS6.9 Installing mysql5.7.21 TutorialsFirstInstallation succeeded:STEP1: Check whether the system comes with the installation of MySQL
Yum List Installed | grep MySQL
STEP2: Delete the system's own MySQL and its dependencies
Problem Description:C:\users\bo.wang> Mysql-u Root-pEnter Password:ERROR 1045 (28000): Access denied for user ' root ' @ ' localhost ' (using Password:yes)Steps to resolve:Step1: Modify the MySQL configuration file my.int, add Skip-grant-tables and
Objectivefrom:78214336User management in the mysql5.7 version is slightly different from the previous version, which is recorded in case of forgettingLanding[Email protected] ~]# mysql-h127.0.0.1-P3316-U Root-Penter Password:welcome to the MySQL
I. System InformationLinux version: 6.8MySQL Version info:/mysql-5.7.21-linux-glibc2.12-x86_64.tar.gzTwo machine IPs:192.168.196.220192.168.196.221DescriptionMySQL installation directory:/opt/mysqlMySQL Data pavement:/data/mysqlTwo. Install the
Set Change root passwordWhat we need to note here is that the root user of MySQL and the root user of the system are not the same thing.By default, the root user of MySQL is empty, so it's not safe, so we're going to set a password for him.To change
MySQL Setup password
MySQL does not have a password by default, so it is necessary to set a passwordMysqladmin-uroot password ' 123456 'mysql-uroot-p123456
Change root password/usr/local/mysql/bin/mysql -uroot更改环境变量PATH,增加mysql绝对路径密码重置vi /etc/
Set Change root passwordFirst check to see if MySQL has startedps aux |grep mysqlIf it doesn't start, start MySQL first/etc/init.d/mysqld startAdd the MySQL directory to the environment variable firstexport PATH=$PATH:/usr/local/mysql/bin/The
It is more accurate than MySQL password cracking, because in most cases we just forget the password, if it is normal users can also let the administrator reset the password or reassign a user, but here we do not consider the ordinary user, What if
Original CentOS-7 under Installation MySQL5.6.22An installation environment(1) CentOS version: CentOS-7To view the method:[[Email protected] Desktop]# cat/etc/redhat-releaseCentOS Linux release 7.0.1406 (Core): http://www.centos.org/(2) MySQL
Log in to the MySQL database using the root user error 1045 (28000): Access denied for user ' root ' @ ' localhost ' (using Password:yes).Solution:1. Execute command : Service mysqld stop; stop MySQL service2. Add parameter start execution command
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