Programmer Group

1. NAT mode topology and working principle There is a scheduler in front of a group of servers, which are connected through Switch/HUB. These servers provide the same network service and content, that is, no matter which server the request is sent to, the execution result is the same. The content of the service can be copied to the local hard d ...

yum configuration using Network yum Library Service Building Environment: use centos 7 as the server and CentOS 6 as the client First, build a local yum with the image Configure / etc/yum.repo.d/bash.repo configuration file [root@centos7 yum.repos.d]# ls bak base.repo Without this file, you can create ...

The following problems were encountered while installing docker [root@sm-docker249 yum.repos.d]# yum install docker-ce docker-ce-cli containerd.io Loaded plugins: fastestmirror, langpacks docker-ce-nightly | 3.5 kB 00:00 docker-ce-stable | 3.5 kB 00:00 d ...

This installation of Mysql's EnOS version is 7.7 1. Download Mysql First go to Mysql's website to download the installation package, web address https://dev.mysql.com/downloads/mysql/ It is recommended that you download the common version of Linux for easy administration of installation location and installation of multiple versions of MySQL on ...

I. iptables 1) Check the status of the firewall The firewall service name in centos7 is firewalld, no longer iptables [root@localhost ~]# systemctl status firewalld firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled) Active: active (running) since One 2017-12 ...

mq cluster construction I haven't written these technical articles for a while. I'll spare some time to write them today, or I'll forget them This article records the process of building rocketmq cluster, and it's also a half day's achievement record! Interested friends like to go! Well, there's not much bullshit. Let's start. This article i ...

1. Preface Today, the leader asked to set up a set of svn servers to store some documents, which was supposed to be a very simple thing, but the process was not so smooth, mainly because he did not understand the problems caused by SVNParentPath and SVNPath, and only after finding the documents and debugging, did he find out their use and diff ...

Note: This article is not an original article, which is transferred from the following: View and setup of Selinux 1. Check SELinux status 1.1 getenforce The getenforce command is a combination of the words get (get) and enforceto view the selinux status, as opposed to the setenforce command. The setenforce command is a combination of th ...

ref: Parameters for the useradd command /etc/default/useradd configuration file /Files in etc/skel directory Create a user manually ref: http://blog.csdn.net/ouyang_peng/article/details/8732928 http://blog.sina.com.cn/s/blog_6a58bdf40102v2zf.html Parameters for the useradd command [vincent@localhost ~]$ use ...

1. What can server initialization do Turn off selinux ntp synchronization time Modify dns Configure ssh key Modify yum source Set host name Kernel parameter optimization: tcp, memory, routing, file handle Install the necessary software package: gcc-c++ cmake nmp wget vim jdk traceroute iotop, etc Prohibit root logi ...