Programmer Group

Catalog kubernetes Network Communication Problems to be solved flannel Calico/Cannel kubernetes Network Communication Problems to be solved Communication between different containers within the same pod, local Communication between Pod s Communication between pod and Service: PodIP<-- ...

proxychains function proxychains allow commands to access the network through the specified proxy. For example: wget www.google.com Due to the firewall, direct access is not available.   If you already have a proxy service (socks5://127.0.0.1:1080), after configuring proxychains: proxychain ...

Template method pattern, the name is very direct, and easy to understand. What is a template? A template is a set of fixed formats. We can imagine an ordinary worker's daily work template: go to work - > work - > go home from work. For each employee, the specific content of the three steps is different, but the process is the same. In ...

Introduction to Docker Docker An open source application container engine that allows developers to package their applications and dependencies into a portable container and then publish them to any popular application. Linux Virtualization can also be achieved on machines. Containers are completely sandboxed with no interfaces (similar ...

To install the NFS service, you need to install nfs-utils and rpcbind, the RPC service of NFS, named portmap under Centos5.X and rcpbind under Centos6.X.1. Query whether nfs service and rpc service are installed[root@nfs-server ~]# rpm -qa|grep nfs  [root@nfs-server ~]# rpm -qa|grep rpcbind2. Using Y ...

Principle: Traditional mysql replication is master-slave replication. It has one master, one or more slaves. After submitting and executing things at the master node, it sends them (asynchronously) to the slave node through a log file for re-execution (in statement-based replication) or application (in line-based replication). By default, all ...

LVS Dual-machine Load Balancing Deployment Scheme Based on Centos 7.3.10-514 Host: 192.168.1.51 Standby: 192.168.1.52 LVS VIP: 192.168.1.50 0. Production system local CD-ROM yum source Note: Use CentOS-7-x86_64-DVD-1611.iso file to upload to the system for completing the following installation steps without access to the public netwo ...

Original address: https://linux.cn/article-8098-1-rel.html FirewallD Yes. The front-end controller of iptables is used to implement persistent network traffic rules. It provides command line and graphical interfaces, which are available in most Linux distribution repositories. There are two main differences between using Firewall D and d ...

Last blog we installed centos7 on a virtual machine, so let's start installing the lnmp environment. As before, switch to root privileges using the su command after entering the command line. Configure the firewall first CentOS 7.0 uses firewall as a firewall by default 1. Turn off firewall: systemctl stop firewalld.service #Stop firewall ...

Foreword: centos 7 1. Basic operations If you don't have commands installed on your system yum install firewalld //Install firewalld firewall Open Services # systemctl start firewalld.service Close the firewall # systemctl stop firewalld.service Start-up automatically # systemctl enable firewalld.service Turn off and start up ...