Use postfix and dovecot to deploy your mail system--Learn Notes

The experimental environment is redhat 7.0 systemAs shown in the figure aboveClient uses outlook to send and receive mailThe server sends outgoing mail using postfix, receives mail using dovecot, and forwards the changed user 1. Install dns domain name resolution service 1.1 Configure the server host name, which is consistent with the sending ...

Posted on Sat, 15 Feb 2020 08:27:43 -0800 by murpe

Ubuntu 18.10 install DenyHosts to prevent exposed servers from being blasted by malicious ssh

Today, a friend suddenly remembered to see if the server had been blasted by malicious ssh, but he didn't know if it did. There are still a lot of friends like us after checking on github.. A great God has written the plug-in, just use it directly. Originally, I was going to turn off password acces ...

Posted on Sat, 15 Feb 2020 00:19:18 -0800 by katlis

K8S learning 003 -- using kubeadm to deploy the installation cluster

Article directory Preface 1: Environmental preparation 2: Cluster deployment process 2.1: set system initialization 2.1.1: three nodes initialize the system, showing only the operation of the master node 2.2:kubeadm deployment and installation 2.2.1: docker installation, both master and slave 2.2 ...

Posted on Fri, 14 Feb 2020 05:10:35 -0800 by stewart

snmp4j introduction and Application

Introduction to SNMP SNMP refers to the Simple Network Management Protocol.It belongs to the application layer protocol of the TCP/IP five-layer protocol.It provides a simple and convenient mode to manage elements in a network.The elements here are the managed objects, either a hardware in ...

Posted on Thu, 13 Feb 2020 19:32:20 -0800 by DJH

Physical Machine Installation minikube

Kubernetes (k8s) is an open source platform for automating container operations, based on which you can perform container deployment, resource scheduling, cluster expansion, and so on.If you've used the Docker deployment container before, you can think of the Docker as a component used at the bottom of Kubernetes, which is an upper-level encap ...

Posted on Mon, 20 Jan 2020 11:00:12 -0800 by jowatkins

Primary ideas for scripting full-network backup

Article Directory Preparations: Deploy rsync service Server: First mileage: confirm software installation Second mileage: writing configuration files Third mileage: Create backup directory management user Fourth mileage: Create a backup data directory and modify the ownership group Fifth Mileage: C ...

Posted on Wed, 15 Jan 2020 20:01:25 -0800 by 2005

docker port mapping

docker port mapping 1.docker run -d -p 80:80 nginx:latestdocker port mapping 1.docker run -d -p 80:80 nginx:latest 2.iptables viewing rules [root@docker03 ~]# iptables -t nat -L -n Chain PREROUTING (policy ACCEPT) target prot opt source destination DOCKER all -- 0.0.0.0/0 0.0.0.0/0 ADDRTY ...

Posted on Tue, 07 Jan 2020 09:42:16 -0800 by ehask

Install tomcat7 under CentOS 6.5

Before installation, make sure that the java jdk has been installed correctly. Please Refer to install jdk1.8 under CentOS 6.5 If Tomcat 7.0 is used, make sure that jdk is 1.6 or above. Tomcat version selection and download are detailed on the official website: http://tomcat.apache.org/index.html 1. Decompress after downloading Copy apache-t ...

Posted on Tue, 31 Dec 2019 08:41:27 -0800 by nalleyp23

Automatic installation system based on pxe+dhcp+ks

1, Preparations 1. Add a network card 2. Configure IP 192.168.100.85/24 for the new network card 3. Modify the network connection mode of the new network card to vmnet3 [root@localhost ~]# mount /dev/cdrom /mnt/ [root@localhost ~]# service iptables stop [root@localhost ~]# setenforce 0 Note: the address of the first network car ...

Posted on Tue, 24 Dec 2019 11:34:52 -0800 by ScottCFR

Istio 1.4 Deployment Guide

>Original link: Istio 1.4 Deployment Guide Istio has been in the process of rapid iterative update, and its deployment method is constantly updated. The installation method I introduced in version 1.0 before is not applicable to the latest version 1.4. In the future, the mainstream deployment method is to use istioctl for deployment, and hel ...

Posted on Mon, 23 Dec 2019 00:10:24 -0800 by malcome_thompson