Programmer Group

In Linux, the timing task is executed by crond program. It is started by default after power on like SSH, network, rsyslog and sysstat. By default, crond checks every other minute to see if there are any tasks to perform. If you have special needs, such as executing once a second, you need to write daemons. View the contents o ...

Problem bond binding was done before to restore the entire virtual machine environment to its original state. Solution First, execute the command line in the virtual machine and turn off the network card (using console, once the remote ssh network card is turned off, the network is also broken) # Check which network cards a ...

1. Restore environment: [server1] [root@server1 _modules]# salt-key -L Accepted Keys: server1 server2 server3 server4 Denied Keys: Unaccepted Keys: Rejected Keys: [root@server1 _modules]# salt-key -d server4 The following keys are going to be deleted: Accepted Keys: server4 Proceed? [N/y] y Key for minion server4 deleteed. ...

Batch create users: 1. Create the list file users.txt of user name, one line for each user. [root@linuxprobe ~]# vim users.txt andy barry carl duke eric ergou Next, write the shell script useradd.sh. [root@linuxprobe ~]# vim useradd.sh #!/bin/bush read -p "Enter The Users Password : " PASSWD for UNAME in `cat users.txt` d ...

Prepare materials: ip:192.168.220.130 System: centos7 Reference documents: I found a Chinese version that is easy to see http://docs.jumpserver.org/zh/docs/   1. The first two problems are the configuration file is wrong: So I want to put the configuration file here. If I don't want the vi command, it's recommended to c ...

I'm writing a very simple script that will call another script and need to propagate parameters from the current script to the executing script. For example, my script name is foo.sh and calls bar.sh foo.sh: bar $1 $2 $3 $4 How do I do this without explicitly specifying each parameter? #1 building #!/usr/bin/env bash while [ " ...

1.openssh When the openssh service is enabled in the host, the remote connection interface is opened to the public. The service end of openssh service is open to the public, and the remote connection is open to the public sshd ා server software, open an interface for others to connect through other ways 2. How to connect s ...

MHA introduction (1) Introduction At present, MySQL is a relatively mature solution in terms of high availability. It is developed by Japanese DeNA company youshimaton (now working for Facebook company), and it is an excellent high availability software for failover and master-slave improvement in MySQL high availability environment. In the p ...

RHEL 7 installation using docker I. Introduction Docker is an open source application container engine, which allows developers to package their applications and dependency packages into a portable container, and then publish them to any popular Linux machine, or realize virtualization. Containers are completely sandboxed and ...

Yesterday, I published a post about how to Git Repository from one of my computers Problem cloning to another computer ， How do I "git clone" from another computer? . Now I can successfully clone the Git repository from the source (192.168.1.2) to the target (192.168.1.1). However, when I was on a file, git commit-a-m "t ...