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preface This article also cost me a lot of effort. First of all, I want to make it clear that at least more than 100% of the knowledge points in this article before I write this article are not clear. Moreover, the total number of words after writing this article is no more than 24 hours, with a statistics of more than 27800 words and more tha ...

1, Prometheus deployment Environmental preparation hostnamectl set-hostname prometheus systemctl stop firewalld systemctl disable firewalld setenforce 0 vim /etc/resolv.conf nameserver 114.114.114.114 ntpdate ntp1.aliyun.com #Time synchronization must be done, otherwise there will be problems Unpack and start service #Drag the ...

Linux environment variables and process address space //View process pid and parent process [dy@VM-12-10-centos jincheng_12_5]$ ps ajx | head -1 && ps axj | grep 3669470 PPID PID PGID SID TTY TPGID STAT UID TIME COMMAND 3669469 3669470 3669470 3669439 pts/0 3681645 S 1001 0:00 -bash 3669470 3681645 368 ...

5, Interaction free shell programming 1, Here Document (1) Here Document overview Provides a list of commands to interactive programs using I/O redirection An alternative to standard input Here Document is an alternative to standard input, which can help script developers not use temporary files to build input information, but directly ...

Database installation Experimental environment Redhat8.3 Method 1: use the MySQL repository to install and deploy mysql 1, Add MySQL repository Add the MySQL Yum repository to the repository list of the system. This is a one-time operation that can be performed by installing the RPM provided by mysql. Follow these steps: Go to th ...

4.2.4 while loop Format: while COMMANDS; do COMMANDS; done while CONDITION; do Circulatory body done explain: CONDITION: cycle control CONDITION; Make a judgment before entering the cycle; Judgment will be made again after each cycle; If the CONDITION is "true", a loop is executed; The loop is terminated until the CONDITION ...

preface This section explains the usage of sed in detail, combined with the regular expressions learned before. The article is completely from Xiaobai's point of view. It took a long time to edit it so that everyone can understand and operate it as much as possible. sed introduction 1. sed introduction vi is to edit text interacti ...