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NFS file sharing service Introduction: NFS is a network file system A general sharing solution for sharing file system through network developed by sun company; The NFS listening port is tcp 2049 port; RPC service records port information, ip address, etc RPC: remote procedure call protocol; Use nfs file sharing and enable rpcbind servic ...

1. redis master-slave replication 1.1 problems Specific requirements are as follows: Configure the host 192.168.4.51 as the master serverConfigure the host 192.168.4.52 as the slave server of 192.168.4.51Test configuration 1.2 scheme Deploy the redis master-slave replication structure and the host role, as shown in figure-1: Figure ...

1. Prepare the virtual machine environment 1.1 problems This case requires the preparation of virtual machine environment. The specific requirements are as follows: Configuring the YUM source server on the springboardPrepare virtual machine master experiment environmentMinimum configuration: 2cpu, 2G memoryUninstall firewall firewalld- ...

The blogger has previously worked in the collection and payment system of Hengfeng Bank (equivalent to the payment interface), including the current OLTP API transaction interface and the external data interface of virtual business. In short, when you have done a lot of projects and written a lot of code, you need to go back and summarize more, ...

Linux - firewall, SELinux rules 1, Firewall firewall rules Function of firewall: release or block some services and ports 1. Firewall Simple operation # 1. View firewall status systemctl status firewalld # 2. Turn off firewall systemctl stop firewalld # 3. Turn on the firewall systemctl start firewalld 2,firewall Direct rule of # 1. Vi ...

Netty study notes 1. Introduction and application scenario of netty 1.1 INTRODUCTION Netty is an open source framework for jbossNetty is an asynchronous, event driven network application frameworkBased on nio 1.2 application scenarios Rpc e.g. dubbogamebig data Applications involving network communication can use netty 2. i/o model 2.1 ...

preface Nginx is the Rambler with the second largest number of visitors in Russia Ru site design and development. Since its release in 2004, with the power of open source, it has been close to maturity and perfection. Nginx has rich functions and can be used as HTTP server, reverse proxy server and mail server. Support FastCGI, SSL, Virtual H ...

Background data analysis: 1. Problem generation If the data passed from the front end to the background is an object, it will be converted into a json object by defaultjson objects can only be received by a single object on the server sideFor example, if the front end passes param and ids data, they will be converted into unified json o ...

Time storage of mysql advanced part Reproduced in guide: https://javagude.cn/database/mysql/some-thoughts-on-database-storage-time/ timestamp is better than datatime 1.datatime will cause time zone problems 2.datatime8 bytes timestamo4 bytes 1. Remember not to store dates in strings I remember doing this when I was in college, and ...

1. Upgrade the website operation platform 1.1 problems The specific configuration is as follows: Clear current configurationDeploy LNMPTest configuration 1.2 steps To implement this case, you need to follow the following steps. Step 1: clear the current configuration 1) Stop Web Service [root@web33 ~]# /usr/local/tomcat/bin/shutdo ...