Programmer Group

The first time I wrote a blog in Yunlu community, I took the process of building Kubernetes high-availability cluster infrastructure to try. Haha.First, the configuration is briefly introduced: proxy uses ipvs, network uses calico, stacked etcd cluster, and apiserver uses haproxy+keepalived for load balancing My github link https://github.com/J ...

I. Installation 1.1 Install docker-ce on centos7 Check system and kernel version [root@myhost img1]# cat /etc/redhat-release CentOS Linux release 7.3.1611 (Core) [root@myhost img1]# uname -r #Kernel version must be above 3.10, centos7 just meets. 3.10.0-514.21.1.el7.x86_64 Execute the following commands in turn #Adding Pac ...

Package Installation and Unloading 1. Three ways to install software packages 2. rpm package introduction 3. Use of RPM tools 4. Usage of Yum tools 5. yum Builds Local Warehouse 6. yum Replacement of Domestic Sources 7. Install the extended source epel 8. yum downloads rpm packages 9. yum's new instr ...

File Compression and Packing 1. Introduction to Compression Packaging 2. gzip compression tool 3. bzip2 compression tool 4. xz compression tool 5. Summary of gzip, bzip2, xz commands 6. zip Compression Tool 7. tar packaging 8. Target packaging and compression Look at this post: http://ask.apelear ...

server information System: CentOS 6.5 minimal version Host: Virtual Machine Virtual Machine IP: 192.168.128.128/24 Host IP:10.1.79.24/24 Install postfix Note: CentOS 7 has actually replaced sendmail with postfix+Sasl2, so there is no need to install it. 1. Remove sendmail Installation completed also requires replacing the sendmail that ...

brief introduction RAIN-0: Mainly any disk is damaged and all data on RAID will be lost and unreadable. (Half to half) RAID-1: The biggest advantage is probably backup of data. However, since half of the disk capacity is used for backup, the total capacity will be only half of the total disk capacity. (Mirror) RAID 1+0, RAID 0+1: With the ...

When the environment variable is written to the configuration file, it still takes effect after restarting the machine 1. Location of environmental variables Following are the default configuration files for five types of storage environment variables The environment variables stored in / etc/profile / etc/profile.d/*.sh and / etc/bashrc ...

This chapter introduces the use of shutil and zipfile modules. Let's first understand these two modules. I. shutil module The shutil module is mainly used to process files or folders, including copying, moving, renaming and deleting files. In the shutil module, there are mainly the following functions: 1. Copy files and folders Shutil module pr ...

Catalog Learning Notes: CentOS 7 Learning Seventeenth: Linux Scheduled Tasks and Log Management 17.1 Planned Task-at-cron-Planned Task Usage Method 17.1.1 Utilization of at Planned Tasks 17.1.2 View and delete planned tasks to be performed by at 17.1.3 Use of Crontab Timing Tasks Introduction of 17.1 ...

LVS Dual-machine Load Balancing Deployment Scheme Based on Centos 7.3.10-514 Host: 192.168.1.51 Standby: 192.168.1.52 LVS VIP: 192.168.1.50 0. Production system local CD-ROM yum source Note: Use CentOS-7-x86_64-DVD-1611.iso file to upload to the system for completing the following installation steps without access to the public netwo ...