Introduction to docker

1. Core docker concepts 1.1 docker mirror Doker mirroring, also known as image, is similar to virtual machine mirroring in that it can be understood as a read-only template for a polygon docker engine and also includes a file system. Mirrors are the basis for creating containers. Through versioning ...

Posted on Fri, 05 Jun 2020 18:37:57 -0700 by Ofro04

Keeping alive to realize LVS load balancing high availability cluster

1. The preserved software is used to manage and monitor the status of each service node in LVS cluster system in the early stage; 2. In the later stage, VRRP is added to realize high availability. Therefore, it can provide high availability for lvs load balancing and other services.. Experiment image: Centos 8.1.1911 Sketch: (to be filled) 1. ...

Posted on Thu, 04 Jun 2020 09:01:04 -0700 by hailam

How MySQL master-slave synchronization architecture is built

Catalog I. Preface 2. About MySQL Master-Slave Synchronization 3. Deployment Planning 3.1 Server Planning 3.2 Database Catalog Planning 4. Preparation Tools 5.4 Use Universal Binary Package to install MySQL on four machines (node7 as an example) 5.1 Upload MySQL Universal Binary Installation Package to Noe7/usr/local/src directory 5.2 Unz ...

Posted on Wed, 27 May 2020 21:17:41 -0700 by acac

Linux Command rpm Command

Catalog What is rpm? install upgrade uninstall query check Database Maintenance What is rpm? The full name of rpm, The RPM Package Manager, is the package manager of the RHEL operating system with the suffix.Rpm. RPM commands are used to install, uninstall, upgrade, query, list and check RPM packages on Linux systems. install rpm -ivh PAC ...

Posted on Mon, 18 May 2020 09:48:43 -0700 by loki1664

Docker theory introduction and installation tutorial

Be based on Linux As far as docker is concerned, it is an open source tool to run applications in it, which can be considered as a lightweight virtual machine. Docker's logo is a whale carrying a container (the old logo). The new logo directly simplifies the details and changes the color, as shown below. As you can see from the picture, ...

Posted on Thu, 07 May 2020 19:29:18 -0700 by campsoup1988

Linux server configuration and management series - resolve dependency violation - yum rollback

How to solve the damage of package dependency Solution of package dependency destruction How to solve the damage of package dependency background Error reporting Solutions step The development of rollback method of yum 1. Background Today, I'm going to build a DNS server. Why do I report an error whe ...

Posted on Tue, 05 May 2020 09:59:21 -0700 by lucasmontan

Docker binding Remote API port

Docker officially provides two different SDKs and HTTP API s: Go and python. I'm not familiar with the Go language. I tried the python SDK. Docker's official Python SDK is for version 2.x, which is tested directly on Python 2.7.5 of CentOS, but there are errors: # python Python 2.7.5 (default, Aug 4 2017, 00:39:18) [GCC 4.8.5 20150623 (Re ...

Posted on Fri, 01 May 2020 15:27:32 -0700 by fdost

CentOS 8 uninstall gnome desktop

background The Centos8 Server version installed the UI when installing the system, which takes up a lot of resources when starting up. uninstall yum remove gdm -y >On CentOS 8, gdm is used to manage the desktop. When gdm is uninstalled, Gnome shell will be uninstalled together Uninstall results: ... ... //Removed: gdm-1:3.28.3-22.el8.x86_ ...

Posted on Wed, 29 Apr 2020 07:31:24 -0700 by Anthony_john5

PXE - unattended automatic installation of Linux operating system (step record)

DHCP service DHCP server is mainly used to assign IP address and other network parameters to clients in the internal network of the enterprise. In the unattended environment, when the client chooses to start from the network, it will look for the DHCP server by sending broadcast packets. After obtaining the IP address and other parameters from ...

Posted on Thu, 23 Apr 2020 01:46:43 -0700 by cainscripter

Docker - Basic Management

1, Docker introduction [1].Docker Docker is an open source application container engine: it allows developers to package their applications and dependency packages into a portable image, and then publish them to any popular Linux or Windows machine, or realize virtualization. It is a lightweight "virtual machine". The container is ...

Posted on Tue, 21 Apr 2020 22:17:08 -0700 by kristen