KVM virtualization Foundation

About virtualization What is virtualization In computer technology, Virtualization (Technology) or Virtualization (English: virtualization) is a kind of resource management technology, which abstracts and transforms various physical resources (CPU, memory, disk space, network adapter, etc.) of a computer and presents them for partition and co ...

Posted on Sun, 19 Jan 2020 18:42:53 -0800 by sneha1234

kubernetes pv pvc nfs nginx real-time persistent storage volume, persistent storage volume declares real-time

Use of PV Stateful applications and applications that persist data, we have hostPath or emptyDir to persist our data, but obviously we also need more reliable storage to hold the persisted data of the application so that the container can still use the previous data after rebuilding.However, storage r ...

Posted on Sun, 19 Jan 2020 17:41:27 -0800 by hideous

Linux unattended installation that you can understand at a glance!!!

Unattended installation Through the method of network boot system, we can get rid of the tedious media such as CD, hard disk, USB to boot, and install multiple machines completely through the network. It is easy and fast to install. Function of PXE: it is equivalent to a small system in ROM. it provides ...

Posted on Thu, 16 Jan 2020 06:16:00 -0800 by fiona

docker command learning

Last time we just listed the function of the command and its simple use (you can see: Summary of docker commands (1) ), then this article will detail the parameters of each command search docker search: This command is used to find a docker image in the repository Grammar: docker search parameter mirror name: tag (version) Parameter descriptio ...

Posted on Mon, 13 Jan 2020 08:22:48 -0800 by smilesmita

docker basic management

Docker core concepts 1. What is Docker? It's a lightweight "virtual machine"● open source tools for running applications in Linux containers 2. The difference between Docker and virtual machine Characteristic Docker container virtual machine Starting characteristics SEC level Minute class Calculation capacity loss Almost no ...

Posted on Sun, 12 Jan 2020 06:12:16 -0800 by crisward

Training character recognition with ctc

1, Get font win10 font search method [windows + e] - >% WINDIR%/Fonts CentOS Linux font path / usr/share/fonts root@9080e45b4485:~# apt-get install fontconfig root@9080e45b4485:~# fc-list /usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf: DejaVu Serif:style=Bold /usr/share/fonts/truetyp ...

Posted on Sat, 11 Jan 2020 08:14:12 -0800 by Donny Bahama

Big data tutorial (3.10): program of zookeeper distributed shared lock

The blogger in this section will provide you with an example of distributed shared locks, which are very important because they need to be used in many scenarios. Therefore, we must master this knowledge. If you don't know the principle of distributed shared lock, please read the previous article first Big data tutorial (3.3): introduction to ...

Posted on Wed, 08 Jan 2020 08:00:27 -0800 by r3drain

Failure of systemctl state probe in Kubernetes pod

In Heketi's glusterd container service, the system CTL probe is used to detect whether the glusterfs service is available. It is found that there is always a failure problem. It is found that the output information of systemctl status glusterd.service runtime on Ubuntu 18.04 is not what K8s livenessProbe wants, causing the detector to timeout ...

Posted on Tue, 07 Jan 2020 07:48:14 -0800 by everknown

linux network interface, ip address, routing settings

This paper is based on centos To configure DNS entries: Configuration file / etc/resolv.conf Modify host name: Command: hostname NAME. Failure after restart Configuration file / etc/sysconfig/network CentOS7 special command: hostnamectl Configure IP address mode: 1. Static designation: Order: ifcfg family: ifconfig: configure IP, NETMASK ...

Posted on Mon, 06 Jan 2020 19:12:26 -0800 by coldkill

Docker Container - Basic Management

What is Docker Is a lightweight virtual machine Run the application's open source tools in a Linux container Difference between Docker and Virtual Machine _A virtual machine is a physical machine that uses virtualization technology to virtualize multiple operating systems, each of which is isolated.Docker is an open source application contai ...

Posted on Sat, 04 Jan 2020 18:12:09 -0800 by jmfillman