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role IP role operating system Remarks 192.168.10.210 master CentOS 7 haproxy,keepalived master 192.168.10.211 master CentOS 7 Haproxy, keep alived ready 192.168.10.212 master CentOS 7 Haproxy, keep alived ready 192.168.10.213 node CentOS 7 Do Nodes Only Host preparation:1. Install necessary software and upgrade all software yum - ...

1.shell programming shows basic information of computer and basic script. Only for version 6.7. COLOR="\033[1;36m" COLOREND="\033[0m" echo -e "CPU type is $COLOR `lscpu |grep 'Model name'|tr -s ' '|cut -d: -f2`$COLOREND" echo -e "Disk space is $COLOR `lsblk |grep 'disk' |tr -s ' '|cut -d' ' -f4|head -n 1` $COLOREND" echo -e "Memory size is $C ...

CentOS 6.5vsftpd-2.2.2-11 Installation (Virtual User) ==# The vsftpd service used is CentOS 6.5 with its own mirror== Check to see if there is a mounted mirror CD df -Th Filesystem Type Size Used Avail Use% Mounted on /dev/mapper/VolGroup-lv_root ext4 18G 3.4G 14G 21% / tmpfs tmpfs 491M ...

A Brief Introduction to the Method and Process of Manually Transferring Arbitrary APP to System APP Purpose: Maintain the same directory as the original system file settings (permissions, owners, SE context), directory structure can be consistent! Move the corresponding APP file from / data/app / to / system/app. The system aft ...

I. samba Samba is a free software that implements SMB protocol on Linux and UNIX systems. It consists of server and client programs. SMB (Server Messages) Block (Information Service Block) is a communication protocol for sharing files and printers in LAN. It provides file and printer sharing services for different computers in LAN. SMB ...

1 OverviewIn order to share resources, ftp servers need to be built. This paper will automatically install the ftp server through scripts and configure it. At the same time, it will create the ftp login account and create two folders as public folders to provide common access paths for all users.2 Conceptual Interpretation and Notices2.1 chroot ...

Openstack Cloud Computing (2): Openstack Rocky Deployment Tri nova Deployment and Validation (Computing Node) Tags (space delimited): openstack series First: nova compute node initialization 2: nova Computing Node Configuration First: nova compute node initialization 1.1 Configuration Host Name login: 10.0.0.31 cat /etc/hosts --- 10.0 ...

10.12 firewalld and netfilter selinux temporarily closed [root@arslinux-01 ~]# setenforce 0 [root@arslinux-01 ~]# getenforce Permissive selinux permanently closed [root@arslinux-01 ~]# vi /etc/selinux/config permissive doesn't block, it reminds, it doesn't show, it just records information. · CentOS 7 used netfilter firewalls before ...

-- regular -- Basic regularity ^word ##Search for word initial vi/vim in ^ The beginning of a line word$ ##Search for word Ending vi/vim in $ The end of a line ^$ ##Blank line . ##Represents and can only represent any character \ ##Example: Represents only the point itself, escapes the symbol, lets the ch ...

This tutorial uses the operating system CentOS 7. docker installation configuration If the docker is not installed on the machine, it can be installed quickly by the following means (for maximum consistency, the version specified here): yum -y install docker-1.12.6-28.git1398f24.el7.centos.x86_64 #Start docker systemctl start ...