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kubeadm production environment deployment steps 1, Environmental description: 1，centos7 2. ntp clock consistency is required in cluster environment 3，getenforce 0 4，disable firewall 2, Host condition: | k8s-master | k8s-node1 | k8s-node1 | | -------- | -------- | -------- | | 172.16.0.160     | 172.16.0.161    | 172.16.0.162    | 172.16. ...

docker compose: a tool for docker automatic arrangement Preface In the last two articles, I played with Dockerfile again, mainly building various service images based on Dockerfile. This paper will introduce and demonstrate the concept and use of docker compose, which is an automatic choreographer tool of docker. What is docker compose? Before ...

Edition CentOS 8.1.1911(VMWare) redis 5.0.8 Essential information Server IP: 192.168.31.68 Redis port: 7000 (primary) 7001,7002 (slave) Sentinel port: 27000 27001 27002 The key code or command represents this Configure Redis master7000.conf bind 0.0.0.0 port 7000 daemonize yes dir /home/misty/redis-data/sentinel01 pidfile /var/run/redis_ ...

1. Preface Today, the leader asked to set up a set of svn servers to store some documents, which was supposed to be a very simple thing, but the process was not so smooth, mainly because he did not understand the problems caused by SVNParentPath and SVNPath, and only after finding the documents and debugging, did he find out their use and diff ...

Optimization term 1. Close selinux, firewalld (centos7) / iptables (centos6) 2. Modify character set 3, Simplify startup items 4. Modify maximum file descriptor 5. Modify yum source and install common tools 6. Optimize system kernel 7. Optimize ssh login speed 8. Disable ctrl+alt+del restart 9. Set time synchronization 10. history opt ...

Unveil docker (basic theory and installation details) Preface This article will focus on the following aspects to unveil docker: What is docker? Why do I need docker? The core concept of docker What is docker? Based on Linux, docker is an open source tool to run applications in it, which can be considered as a lightweight virtual machine. Do ...

Some users need to start the service when the system is powered on. This article will explain how to start the Ngrok client automatically when the system is powered on under Linux. This article supports Ubuntu, raspberry pie, Centos7, Debian series of systems. If the Centos system does not have start stop daemon installed, see Centos install st ...

Note: the analysis in this paper is based on kernel version 3.10.0-693.el7, namely CentOS 7.4 1. Function prototype int listen(int sockfd, int backlog); Parameter Description: sockfd: the file descriptor of the socket, that is, the fd returned by the socket() system call backlog: save the queue length of client ...

1. Command basis 1.1 command operation syntax Command [parameter] [file] Parameter, optional Documents, optional 2. Basic command 2.1. View the current working directory pwd print name of current/workin directory Print name or working directory [root@oldboyedu ~]# pwd /root [root@oldboyedu ~]# cd /opt/ [root@oldboyedu /opt]# pwd ...

Do not set user authentication install # install yum install squid yum install httpd #View version rpm -qa | grep squid #Here is the version I installed #squid-3.1.23-24.el6.i686 Modify profile Use vim to edit the / etc/squid/squid.conf file. As shown below #/etc/squid/squid.conf # The configuration file al ...