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Problems encountered during installation Question 1: [root@lotus postfix-2.11.11]# make makefiles 'CCARGS=-DHAS_MYSQL -I/usr/include/mysql -DUSE_SASL_AUTH -DUSE_CYRUS_SASL -I /usr/include/sasl -DUSE_TLS ' 'AUXLIBS=-L/usr/lib64/mysql -lmysqlclient -lz -lm -L/usr/lib64/sasl2 -lsasl2 -lssl -lcrypto' make -f Makefile.in MAKELEVEL= Makefiles (echo ...

Socket network programming is a technology, which is often used in network communication. The biggest difference between socket and interprocess communication is that socket network programming is based on multi machine information transmission, while the former is based on single machine. 1, Understand the difference between TCP and UDP. ① T ...

Install Virtual Box, Download from official website Install Vagrant, Download from official website There are multiple Linux system images in the Vagrant image warehouse. We can use Vagrant to connect to the Virtual Box and quickly install the Linux image. Mirror Box warehouse Use vagrant init centos/7 to initialize a cantos7 virtual machin ...

Original address: Debian 11 configuration optimization guide - WindSpiritIT 0x00 introduction This article applies only to configuring Debian 11 Bullseye The article includes both Gnome desktop and KDE desktop configurations, most of which are the same, and the differences are listed separately The update of Gnome desktop related configurat ...

Original link: https://www.cpweb.top/1698 1, Introduction   the server installer for Ubuntu 20.04 supports a new operation mode: automated installation. Automatic installation can answer all these configuration questions in advance through automatic installation configuration, and make the installation process run without any interaction. ...

The slash of file path is also different on different platforms. For example, linux system generally has / slash, while windows has \ two backslashes. Qt itself supports the path of / slash in both win and linux. However, some third-party libraries may need to be converted to the path of the corresponding system, which requires slash convers ...

catalogue 1. The exit state of the child process is not collected by the parent process and becomes a dead process (zombie process) 2. The exit status of the child process is collected by the parent process and the wait function is called 2.1: the status parameter of the wait function is null. 2.2: the status parameter of the wait function ...

catalogue 1, APT introduction 2, Supply mode of APT source 3, Local APT source 1. Use the DEB package of the CD as the APT source 2. The file source list is used as the system installation source 3. View profile 4. Update repository index 4, Network APT source 1. Backup profile 2. Write configuration file 1) Aliyuan (ubuntu 16.04) 2 ...

system configuration Detect and close system swap This section describes how to close swap. TiDB needs enough memory to run, and swap is not recommended as a buffer with insufficient memory, which will reduce performance. Therefore, it is recommended to permanently shut down the system swap and do not use the swapoff -a mode to shut down, oth ...

1. HAProxy 1.1 introduction to haproxy HAProxy is a solution that supports virtual hosts by providing high availability, load balancing and proxy based on TCP and HTTP applications. Since 2013, HAProxy has been divided into community version and enterprise version. Enterprise website https://www.haproxy.com/ Community website https://www.hapr ...