Shell command - pwd, rm for file and directory operations

File and directory operations - pwd, rm 1. pwd: display the current location information Function description of pwd command The pwd command displays the absolute path of the current working directory to switch back and forth between directories. Syntax format of pwd command pwd [OPTION]... pwd [parameter options] Option description of ...

Posted by gemmerz on Fri, 29 Nov 2019 20:15:32 +0100

Build gitlab and deploy gitlab runner

1. Build gitlab. Before installing gitlab from yum, 502 errors were reported all the time after installation. Baidu tried online but still couldn't use it; So this time, it is deployed in docker, as follows: docker run --detach --hostname gitlab.forebix.com --publish 4433:443 --publish 10080:80 --publish 8022:22 --name gitlab --rest ...

Posted by Lashiec on Sat, 09 Nov 2019 16:11:42 +0100

SSH blasting emergency response

Problem finding Log in to the virtual machine, and according to the prompt message, it is found that it is suffering from SSH explosion attack, with IP address of 159.65.230.189. Check the log in related security logs: tail -f /var/log/secure, and find other attempts to blow up IP106.12.183.6, 182.61.166.179, 220.88.40.41. Baidu search IP add ...

Posted by gtibok on Sat, 02 Nov 2019 08:06:32 +0100

[CentOS 7LAMP Architecture 3], Apache installation and configuration#

shallow A kind of ove Install Apache Apache is the name of a foundation. httpd is the package we want to install. In the early days, its name was Apache. Apache official website www.apache.org wget http://mirrors.cnnic.cn/apache/httpd/httpd-2.4.29.tar.gz wget http://mirrors.cnnic.cn/apache/apr/apr-1.6.3.tar.gz wget http://mirrors.cnnic.cn ...

Posted by onicsoft on Fri, 01 Nov 2019 11:11:16 +0100

CVE-2019-14287 (Linux sudo vulnerability) analysis

Author: lu4nx @ know Chuangyu 404 active defense laboratory Author blog: CVE-2019-14287 (Linux sudo vulnerability) analysis Original link:https://paper.seebug.org/1057/   Recently sudo was exposed a vulnerability, unauthorized privileged users can bypass the restrictions to obtain privileges. For the official repair notice, please refer to: ...

Posted by shmick25 on Tue, 22 Oct 2019 09:49:46 +0200

Establishment of redis cluster + redis replication

Environmental Science Deployment and construction 192.168.255.250 [root@vt-manager 3010]# grep -vE "^#|^$" redis.conf bind 192.168.255.250 ##Be sure to write the local ip and use this ip to set up the cluster. port 3010 daemonize yes #Daemons mode (background start) pidfile /etc/redis-cluster/3010/redis_3010.pid #pid file logfile "/etc/re ...

Posted by NikLP on Tue, 22 Oct 2019 09:31:21 +0200

Nginx reverse proxy / load balancing / SSL configuration

Source: https://blog.csdn.net/Powerful_Fy What is reverse proxy? 1. Two servers A and B belong to the same internal network segment, but A is not connected to the external network, B is connected to the external network, and client C has only the external network. 2. If C wants to access A through B, it needs to do reverse proxy on server B. 3. ...

Posted by Domhnall on Tue, 22 Oct 2019 02:50:00 +0200

zabbix4.0 performance tuning

##Performance tuningOverview It's important to get the Zabbix system tuned for optimal performance. Hardware - use the fastest processor - SCSI or SAS is better than IDE (by using the utility hdparm you can significantly improve the performance of IDE disks) and SATA - 15K RPM better than 10K RPM, better than 7200 RPM - use fast RAID storage - ...

Posted by Darkpower on Fri, 18 Oct 2019 10:53:37 +0200

Operations and Maintenance Layout Series - Update the scaling configuration mirror automatically after updating the mirror

Scene introduction Each time a new image is generated from the operations arrangement, the mirror inside the elastic stretch is directly replaced. Solution The scaling configuration source image is the public image aliyun_2_1903_64_20G_alibase_20190829.vhd.Sign in Operations and Maintenance Layout Console .If you have never opened an OOS serv ...

Posted by portaloo on Sun, 29 Sep 2019 04:33:53 +0200

No secret: teach you how to build your own GitLab library by hand

01 Preface In this article, Gitlab is installed as the host mode. For more installation methods, Click https://git.lug.ustc.edu.cn/help/install/README.md 02 Architecture Architecture overview: Unicorn: Handles requests for the web interface and API, general gitlab site, mostly due to problems with this service Sidekiq: Background jobs proce ...

Posted by vynsane on Wed, 18 Sep 2019 04:40:42 +0200