Zabbix deployment, monitoring and email alarm mechanism (actual combat!)
Zabbix deployment
Experimental environment:
CentOS 7-2: 192.168.18.147 (monitoring end: deployment and installation zabbix)
CentOS 7-3: 192.168.18.128 (monitored end)
Monitoring end operation:
[root@cacti ~]# systemctl stop firewalld.service #Turn off firewall function
[root@cacti ~]# systemctl disable firewalld.service #Turn on and ...
Added by weaselandalf on Sat, 01 Feb 2020 17:08:14 +0200
Mariadb changes the root password and skips the authorization mode to start the database
Mariadb changes the root password
By default, the password of the newly installed mariadb is empty. You can log in to the database by directly entering mysql in the shell terminal.
If it is the first time you have just installed it, use the MySQL? Secure? Installation command to initialize it.
# mysql_secure_installation
NO ...
Added by mraza on Mon, 27 Jan 2020 17:54:03 +0200
LNMP dynamic website
LNMP Basics
What is LNMP
One of the mainstream enterprise website platforms
50: Linux operating system
N:Nginx website service software
M:MySQL.MariaDB database
P: Website development language (PHP.Perl.Python)
Difference between static website and dynamic website
Static web page:
(1) Static w ...
Added by filteredhigh on Sat, 11 Jan 2020 11:42:19 +0200
Regular expression query MySQL data
Note: the key to using regular expressions is REGEXP
1. Query records that start with a specific character or string
The character "^" matches the text at the beginning of a specific character or string
#In the fruits table, query the records whose f ﹣ name field begins with the letter b
MariaDB [vincen]> selec ...
Added by pucker22 on Thu, 02 Jan 2020 18:54:59 +0200
Mariadb rights management
Mariadb user and rights management
Permission category
Library level
Table level
Field level
Management category
Program class
Management category:
CREATE TEMPORARY TABLES Create temporary table
CREATE USER Create user
FILE
SUPER
SHOW DATABASES
RELOAD
SHUTDOWN
REPLACTION SLAVE
REPLACTION CLIENT
LOCK TABLES
PRECESS
Progra ...
Added by johnthedeveloper on Sun, 22 Dec 2019 21:52:19 +0200
Control remote data locally
Preface:
There is a Federated storage engine in MySQL. Data tables using this engine do not store any data locally, but all data are stored on remote servers.
1. See if Federated storage engine is supported
MariaDB [(none)]> show engines;
| FEDERATED | YES | FederatedX pluggable storage engine ...
Added by Todd88 on Thu, 19 Dec 2019 18:26:52 +0200
Display the system logs in the database through the log analyzer
catalog
Displaying logs in database through log analyzer
Environmental preparation
Prepare server:
Log server:
Database server:
Test whether the log server and database are connected:
websrv server:
Displaying logs in database through log analyzer
Environmental ...
Added by blkrt10 on Tue, 17 Dec 2019 15:43:39 +0200
SQL updates from one table to another based on ID match
I have a database of account numbers and card numbers. I match these files with files to update all card numbers to this account, so I only use the account.
I created a view that links the table to the account / card database to return the Table ID and the associated account, and now I need to update those records whose ID matches the accou ...
Added by yacaph on Mon, 16 Dec 2019 16:28:39 +0200
innobackupex incremental backup and recovery
Download: Xtrabackup
https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.8/binary/redhat/7/x86_64/Percona-XtraBackup-2.4.8-r97330f7-el7-x86_64-bundle.tar
Unzip, install yum
tar -xvf Percona-XtraBackup-2.4.8-r97330f7-el7-x86_64-bundle.tar
yum install percona-xtrabackup-24-2.4.8-1.el7.x86_64.rpm
Full backup
innobackupex –user=r ...
Added by Hatdrawn on Sat, 14 Dec 2019 17:40:51 +0200
Binary deployment MySQL 5.7
Binary deployment is relatively simple. You can go to mysql official website without installing dependent environment download MySQL binary package. Or through the link of my network disk download , there are auto deployment scripts in the network disk link.
Note: the latest MySQL version 8.0 is completely consistent with the deployment proces ...
Added by silverglade on Wed, 11 Dec 2019 16:05:29 +0200