DHCP relay service

1: Experimental environment1.1: Huawei ensp software1.2: PC, router and switchPC in initialization state and router and switch in initialization state2, Experiment requirements, realize the whole network interworking and DHCP relay on R43: Experimental process3.1: equipment configurationIn the ensp, the PC, router and switch are ready and st ...

Posted on Thu, 28 May 2020 11:09:52 -0400 by alemapo

How to use Istio for multi cluster deployment management: multi control plane

By Wang Xining, senior technical expert of alicloud Introduction: This article is excerpted from the book "analysis and practice of Istio service grid technology" written by Wang Xining, a senior Alibaba cloud technology expert. It describes how to use Istio for multi cluster deployment management to explain the support ability of s ...

Posted on Mon, 25 May 2020 03:35:25 -0400 by loveitandhateit

Docker network of container technology

In the previous blog, we mainly talked about the description of docker image and how to make image based on existing image and distribute image to docker warehouse. For review, please refer to https://www.cnblogs.com/qiuhom-1874/p/12941508.html Today, let's talk about the description of docker's network; When using vm virtual machine, we know t ...

Posted on Sun, 24 May 2020 10:06:20 -0400 by bugcoder

python's network (nmap, IPy, dnspython)

1. Port Scan It's not enough just to know if the hosts on the network are reachable. In many cases, we need a port scanner.Use port scanner inches for security detection and *** prevention.For example, on May 12, 2017, a worldwide outbreak of Wannacry extorting worms based on the Windows Network Sharing Protocol occurred.In just five hours, mo ...

Posted on Thu, 14 May 2020 23:43:14 -0400 by Mohammad

Using kubeadm to build k8s cluster

Using kubeadm to build k8s cluster 1, Environmental preparation: There are two Centos7 hosts, 166(master)167(node01). docker is installed on both hosts. The following operations are performed on both hosts. Modify the contents of the / etc/hosts file [zjin@master ~]$ cat /etc/hosts 10.3.4.166 master 10.3.4.167 node01 Disable firewall [zjin@mas ...

Posted on Thu, 07 May 2020 23:30:46 -0400 by -Zeus-

INI Profile Format Resolution in Go Language

init profile and parsing The INI profile has three elements parameters A configuration, such as key = value. sections sections are a collection of parameters, which must be exclusive and enclosed in []. sections do not have an obvious end. The beginning of one section is the end of another. comments A comment referring to the INI configur ...

Posted on Mon, 04 May 2020 07:41:54 -0400 by umol

Configuring Apache(httpd) with php

The main Apache configuration file is: / usr/local/apache2/conf/httpd.conf Configure httpd and php steps Httpd main configuration file / usr/local/apache2.4/conf/httpd.conf vim /usr/local/apache2.4/conf/httpd.conf / / modify the following four places ServerName Require all denied AddType application/x-httpd- ...

Posted on Sun, 03 May 2020 20:33:57 -0400 by madhavanrakesh

Nginx + maintained dual hot standby (dual main mode)

Nginx + maintained dual hot standby (dual main mode) A previous article has been written about how to use keepalived to realize the high availability of nginx. In this way, a machine has been used for backup, and 50% of the resources are wasted. Nginx + maintained dual machine hot standby (master-slave mode) Please check the keepalived insta ...

Posted on Sun, 03 May 2020 09:38:01 -0400 by olly79

3-11.RHEL7&CentOS7 Service Command

1) Service Status 1. Check server service status [root@lee ~]# systemctl -t service UNIT LOAD ACTIVE SUB DESCRIPTION abrt-ccpp.service loaded active exited Install ABRT coredump hook abrt-oops.service loaded active running ABRT kernel log watcher abrt-xorg. ...

Posted on Sat, 02 May 2020 13:32:52 -0400 by saurabhdutta

k3s CoreDNS is used to realize internal service interworking

After K3s is installed, CoreDNS will be installed by default to realize dynamic analysis within the cluster, and IP will be dynamically regenerated after pod fails ## View the installation and operation of CoreDNS > kubectl get pod,svc -n kube-system NAME READY STATUS RESTARTS AGE pod/coredns-d798c9dd-67mmc ...

Posted on Mon, 20 Apr 2020 11:08:47 -0400 by seaten