If you forget the root password of a Hetzner dedicated server, you need to boot the server into rescue mode, then mount the file system and chroot to the file system, then use the “passwd” command to reset the root password. Login to Hetzner https://robot.hetzner.com Click on the “Server” link on the left menu. Click … Read more
On a Fresh Cpanel Server, after pointing the domain name to the server, the website won’t load. Some times site loads after a very long wait. Apache was working fine and the server load was normal. On checking Apache status in WHM, I found all workers are in use 150 requests currently being processed, 0 … Read more
By default Amazon EC2 only allow port 22 (SSH) on Linux servers and port 3389 (RDP) on Windows Instances. All other ports are closed for security reasons. Depending on your use case, you may need to open ports on the security group to allow connection to applications you run on the EC2 instance. Log in … Read more
If you lost your WordPress user password, you can use forget password link on the WordPress login screen to reset the password. For any reason, if you were unable to receive the password reset email, you have to reset your password by editing the wp_users table in MySQL Database or by using the WordPress command … Read more
Schema validator https://validator.schema.org/ Google Rich test https://search.google.com/test/rich-results
When updating packages on an Ubuntu server, I got the error “Unsafe symlinks encountered in /var/log, refusing.”. root@ip-172-31-45-33:/var# apt upgrade -y Reading package lists… Done Building dependency tree Reading state information… Done Calculating upgrade… Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. 1 not fully installed or removed. After this … Read more
To split a large CSV file into smaller parts, you can use the split command tail -n +2 access_log.csv | split -l 50000 – –filter=’sh -c “{ head -n1 access_log.csv; cat; } > $FILE”‘ The above command will split file access_log.csv into smaller parts, each part will have the header from the CSV file. split … Read more
When installing Nginx from source on a CentOS 7 server, I got the following error checking for OpenSSL library … not found checking for OpenSSL library in /usr/local/ … not found checking for OpenSSL library in /usr/pkg/ … not found checking for OpenSSL library in /opt/local/ … not found To fix the error, install openssl-devel … Read more
On an Nginx server after updating Nginx and ModSecurity, I got the following error [root@localhost ~]# nginx -t nginx: [emerg] “modsecurity_rules_file” directive Rules error. File: /etc/nginx/modsecurity.conf. Line: 275. Column: 51. “/etc/nginx/coreruleset-3.3.2/rules/*.conf”: Not able to open file. Looking at: ‘”/etc/nginx/coreruleset-3.3.2/rules/*.conf”‘, ‘”/etc/nginx/coreruleset-3.3.2/rules/*.conf”‘, ‘/etc/nginx/”/etc/nginx/coreruleset-3.3.2/rules/*.conf”‘, ‘/etc/nginx/”/etc/nginx/coreruleset-3.3.2/rules/*.conf”‘. in /etc/nginx/conf.d/default.conf:5 nginx: configuration file /etc/nginx/nginx.conf test failed [root@localhost ~]# To fix the … Read more
XFS quota not working RAID 1 To check disk quota for a Linux user, run quota -svu USERNAME_HERE Sample [root@shaft ~]# quota -svu informatiqc Disk quotas for user informatiqc (uid 1000): Filesystem space quota limit grace files quota limit grace /dev/md3 382M 0K 0K 9116 0 0 [root@shaft ~]#
DDoS Protection https://sucuri.net/website-firewall/ http://cloudflare.com https://ddos-guard.net – used by rt.com https://path.net/ DDoS Protected Hosting https://www.hyperfilter.com – DDoS protected hosting https://koddos.net Back to DDoS
Nmap is a network exploration and security auditing tool. It can be used to identify hosts and services on a network, as well as security issues. Nmap can be used to scan for vulnerable open ports on systems. To identify Operating System on a remote server or computer, you can use the command sudo nmap … Read more