Programmer Think

chmod (change mode) change permissionsWhat do you think of permissions?[root@allinlinux-01 ~]# Total dosage of ls-l 8-rw-r--r--.1 root June 8 14:16 2.txt -rw-------. 1 root root 7728 6 month   6 22:11 anaconda-ks.cfg.1- rw-r--r--. This paragraph, except for the first one, represents th ...

2 File Security Context SEAndroid is a MAC security mechanism based on security policy. This security strategy is implemented in the security context of the subject and the object. This means that before the implementation of the security policy, the primary and secondary objects in the SEAndroid security mechanism already have security conte ...

Installation from deployment packages Installation from Zabbix's official source library Zabbix SIA provides official RPM and DEB deployment packages for Red Hat Enterprise Linux, Debian and Ubuntu LTS systems. Deployment package files can be downloaded through repo.zabbix.com. The server provides both yum and apt source lib ...

mongoDB officials no longer recommend using master-slave mode. Instead, the replica set mode is adopted. click For example, So what is a replica set? World of Warcraft always talks about duplication, but in fact these two concepts have almost the same meaning. Duplicate in the game refers to players concentrating on a scene during rush hours ...

Next, I'll give you a brief explanation of some basic optimization operations after the installation of Linux system. Note: This optimization is based on entOS (5.8/6.4). I will mention the cell size of 5.8 and 6.4 when they are optimized. Optimize entries: Modify ip address, gateway, host name, DNS, etc. Close selinux，Empty iptables Added ...

Salt introduces a powerful message queue as a communication transmission mechanism. Sometimes we need old tools to be more effective -- salt ssh. Official documents https://docs.saltstack.com/en/latest/topics/ssh/index.html salt is designed to connect a large number of remote hosts at one time, while SSH (security shell is short for Secure she ...