Set up dns server-domain name resolution

1. Background Description Deployed services require domain name access. Configuration in the host file is OK, but if more than one computer accesses, you need to modify all the host files manually. If you add a domain name one day, you need to modify all the host files manually. 2. Set up dns services The best way to solve the above probl ...

Posted by mizz key_me on Sat, 11 Jul 2020 18:03:08 +0200

NetCat (nc command) for Linux command learning

brief introduction NetCat, known as "Swiss Army Knife" in network tools, is short and practical (1.84 version is no more than 25k, old version or reduced version or even smaller), and is designed as a simple and reliable network tool, which can transmit read and write data through TCP or UDP ...

Posted by sargenle on Mon, 22 Jun 2020 09:48:38 +0200

GitHub access failed, solution < 2020 / 4 / 21 >

#Include < date: April 21, 2020 articles have been changed and updated to solve your problems more effectively <----------------------------------------------------------------------------------------------------------------------------------------------> Preface: I don't know what the reason is, GitHub is not very friendly in China ...

Posted by vikela on Mon, 01 Jun 2020 05:38:55 +0200

k8s deployment and installation dashboard based on Centos8

Install and deploy dashboard 1. Check pod operation kubectl get pods -A -o wide Download the recommended.yaml filewget https://raw.githubusercontent.com/kubernetes/dashboard/v2.0.0/aio/deploy/recommended.yamlModify the recommended.yaml filevim recommended.yamlkind: ServiceapiVersion: v1metadata:  labels:    k8s-app: kubernetes-dashboard  name ...

Posted by anto on Mon, 04 May 2020 18:02:22 +0200

Modify DNS server configuration by raspberry pie

Modify profile 1 sudo vim /etc/dhcpcd.conf Add the following content, we use Google DNS (Beijing Unicom test speed is good) 1 static domain_name_servers=8.8.8.8 8.8.4.4 Complete sample file section 1 2 3 4 interface eth0 static ip_address=192.168.1.3/24 static routers=192.168.1 ...

Posted by mars_rahul on Sun, 03 May 2020 06:41:09 +0200

Python -- an example of business monitoring based on domain name polling

Please indicate the source of Reprint: http://blog.csdn.net/l1028386804/article/details/78965865 Most of DNS resolution is a domain name corresponding to an IP address, but through DNS polling technology, a domain name corresponding to multiple IPS can be achieved, so as to achieve the simplest and most efficient load balancing. However, the b ...

Posted by charlesg on Thu, 30 Apr 2020 20:59:38 +0200

Which keys of SSH

Known Host Keys Prevent man in the middle attacks. https://www.ssh.com/ssh/host-key#known-host-keys SSH clients store host keys for hosts they have ever connected to. These stored host keys are called known host keys, and the collection is often called known hosts. In OpenSSH, the collection of known host keys is stored in /etc/ssh/known_ ...

Posted by ravira on Fri, 10 Apr 2020 16:57:03 +0200

Solve Bug Path - dubbo apps cannot reconnect zookeeper

Preface Dubbo is a mature and widely used framework.Rao is such that in some extreme cases dubbo-based applications will also have the problem of not being able to reconnect zookeeper.Because this problem is easy to cause relatively large failures, the author has spent a lot of time to locate, and now will write a blog to share the investigatio ...

Posted by rschneid on Tue, 07 Apr 2020 05:02:01 +0200

How to use TCP Wrappers to protect MySQL from service interruption

By Ananias Tsalouchidis Translated by: Meng Wei Original text: https://www.percona.com/blog/2020/01/07/how-securing-mysql-with-tcp-wrappers-can-cause-an-outage/ case Protecting MySQL is always a challenge. There are general best practices for installing reinforcement, but the more complex your settings are, the more likely you are to encou ...

Posted by Solarpitch on Tue, 18 Feb 2020 11:08:40 +0100

Use nmcli to configure link aggregation (team port binding) in active and standby mode

Now let's configure the network card binding in CentOS 7 and run the ip link command to view the available network cards [root@localhost ~]# ip link 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:0 ...

Posted by Bomas on Mon, 17 Feb 2020 06:52:07 +0100