Programmer Group

Overview of Automation Operation and Maintenance: Nowadays, with the rapid development of the Internet, the efficiency of traditional operation and maintenance methods is too low. Deployment of automated operation and maintenance can safely and efficiently complete the maintenance work, which has become the main mode of operation and maintena ...

I. Environmental preparation CentOS 7 + Apache 2.4.6 + PHP +Mariadb Apache and Mariadb are installed directly by yum, and PHP is installed by binary source code. The previous items here are the same as the snipeit asset management system installed before. Pre-installation preparation 1. System Update # Note Use Centos 7.5 ...

The pg_stat_states module provides a way to track execution statistics for all SQL statements executed by a server. The module must be loaded by adding pg_stat_states to shared_preload_libraries of postgresql.conf because it requires additional shared memory. This means that adding or removing the module requires a server reboot ...

1. Download the tar package, which is downloaded from the official website using wget wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz 2. Install mysql under / usr/local/mysql # decompression tar -xvf mysql-5.7.22-linux-glibc2.12-x86_64.tar.gz # move mv mysql-5.7.22-linux-glibc2.12- ...

In response to the company's business needs, the closest to build a set of portfolio services, the network did not find a similar portfolio architecture, so I will build the process and share some new, I hope that friends with relevant needs will have the role of throwing a brick to attract jade!The objectives to be achieved are ...

1. Preparations Close the firewall Close selinux systemctl stop firewalld.service setenforce 0 && getenforce && \cp /etc/selinux/config{,.ori} && grep -q "SELINUX=disabled" /etc/selinux/config || sed -i 's%SELINUX=enforcing%SELINUX=disabled%g' /etc/selinux/config 2.Yum installs Samba packages ...

Preliminary preparation: NFS server: computer name nfsserver, IP address 192.168.1.103, used to store business system data. Noe1: Computer name PXC01, IP address 192.168.1.105, installation of pxc system and business system. Noe2: Computer name PXC02, IP address 192.168.1.106, installation of pxc system and business system. Noe3: Computer name ...

Mission 23 October 1 0.1 Use w to view system load 10.2 vmstat command 10.3 top command 10.4 sar command 10.5 nload command   View System Load w command # Line 1: Current system time, system start-up time, logged-in users, system load: 1 minute, 5 minutes, 15 minutes [root@centos7 ~]# w 20:54:14 up 5 min, 1 user, load average: ...

w/uptime View System Load Cat/proc/cpuinfo View cpu Number Vmstat monitoring system status, usage vmstat 1, key columns: r, b, swpd, si, so, bi, bo, us, wa top Views Process Usage Resources Top-c displays detailed process information Top-bn1 static display of all processes q exits, number 1 shows all core cpu s, capital M sorted by memory usag ...

Software management 1. yum: The most important function of the upper software management tool is to solve software dependency. The prerequisite for yum to be operational is that it must have a yum source and configure the source-to-file 1. Getting ISO Mirror Files Matching the System rhel-server-7.0-x86_64-dvd.iso 2. Mount the mirror file i ...