Using linux kernel +busybox to customize linux system

Objective: Understanding the linux startup process Main contents: Grub is the bootloader of the boot program 2. linux kernel is the open source kernel of linux 3.busybox is a collection of linux tools Start sequence: Grub - > bzimage > initrd > init > chroot SBIN / init > / etc / inittab > fstab > etc / init.d/rcs Experimen ...

Posted by dschreck on Sun, 09 Feb 2020 20:05:55 -0800

RHCE exam summary (continuously updated)

Environmental preparation 1. Configure YUM software warehouse server and desktop machine do the same operation!!!!   # // server: $ vim /etc/yum.repos.d/base.repo [rhce] name = EX300 gpgcheck = 0 baseurl = http://classroom.example.com/content/rhel7.0/x86_64/dvd/ ### Clear the previous software warehouse cache $ yum clean ...

Posted by iamyespee on Sun, 09 Feb 2020 03:55:34 -0800

Three ways to install PHP7.4 in Centos8 (Liunx) and three ways to remove it

  Compile Installation Differences and future choices between PHP source compilation and installation via yum under Centos8 Actually, each of these two methods has its own advantages: yum installation: From the perspective of Yum installation, Yum is equivalent to automatic help you install, regardless of the software dependencies, the yum ins ...

Posted by Sorthy359 on Sat, 08 Feb 2020 09:50:49 -0800

LVS-DR mode + ldirectord + preserved + Tun tunnel mode + wrr weight

What is LVS? LVS (Linux Virtual Server), or Linux virtual server, is an open source load balancing project led by DR. Zhang wensong. At present, LVS has been integrated into Linux kernel module. This project implements the load balancing scheduling scheme of data request based on IP in Linux kernel. I ...

Posted by ifuschini on Wed, 05 Feb 2020 02:59:10 -0800

The way of operation and maintenance: DNS service construction and master-slave configuration

Preface Communication on the Internet needs to be accessed with the help of IP address, but people's memory of numbers is far less than that of words, so it's a good way to convert IP address into easily memorized words, but computers can only recognize 0 and 1 codes. At this time, a mechanism is need ...

Posted by Nathaniel on Tue, 04 Feb 2020 22:53:49 -0800

Redis details - cluster

Redis details (7) - cluster Before version 3.0 of redis, high availability (HA) can be achieved through Redis Sentinel. After version 3.0, Redis Cluster was officially launched. Its main purpose is to achieve data sharding, but it can also achieve ha, which is currently recommended by the government. In the Redis Sentinel mode, each node needs ...

Posted by gardnc on Mon, 03 Feb 2020 06:59:45 -0800

Batch deployment of apache based on Saltstack

What is SaltStack SaltStack management tool allows administrators to create a consistent management system for multiple operating systems Preparation of experimental environment Name role address centos7-min master 192.168.142.172 centos7-min2 client 192.168.142.110 Experimental steps ...

Posted by Adastra on Sun, 02 Feb 2020 07:32:55 -0800

lvs cluster implements lvs Dr model and lvs NAT model

ipvsadm The ipvsadm command is the management tool of lvs Cluster in the application layer. We can use this ipvsadm to manage the configuration of lvs. In fact, it implements the cluster service management: add, delete, change, RS management of cluster service: add, delete, change and view the cluster status. Management cluster service: add, ch ...

Posted by frao_0 on Fri, 31 Jan 2020 02:54:13 -0800

LNMP environment setup (php7.3 installation under Centeros 7.7, PHP installation sqlsrv extension)

The article concludes with the material information and installation instructions for this project Article Directory 1. Basic preparation 2. Install Mysql 3. Install PHP 4. Install Nginx 5. Nginx Integration php 6. Install PHP extensions END 1. Basic preparation System Environment CenterOs7. ...

Posted by crickettdt on Wed, 29 Jan 2020 18:56:20 -0800

Installing mysql under linux

Download mysql https://cdn.mysql.com/archives/mysql-8.0/mysql-8.0.11-linux-glibc2.12-x86_64.tar.gz Refer to official information https://dev.mysql.com/doc/refman/8.0/en/binary-installation.html 1. This version of mysql needs to rely on libaio library. If not, you can download it using yum shell> yum search libaio shel ...

Posted by djkanebo on Tue, 28 Jan 2020 07:19:35 -0800