How to Start/Stop and Enable/Disable FirewallD CentOS 7 Start FirewallD Service # systemctl start firewalld Stop FirewallD Service # systemctl stop firewalld Check the Status of FirewallD # systemctl status firewalld Check the State of FirewallD # firewall-cmd –state… Continue Reading
How To Install EPEL Repo on a CentOS and RHEL 7.x The following command will install EPEL Repo on a CentOS and RHEL 7.x: $ sudo yum install epel-release Install EPEL on CentOS 8.x
To unlock Zimbra account from Command Line : # /opt/zimbra/bin/zmprov ma [email protected] zimbraAccountStatus active Unlock Zimbra admin account: # /opt/zimbra/bin/zmprov ma admin zimbraAccountStatus active
Deleting files in Linux – Argument list too long When you’re trying to delete large number of files, you may have error: Argument list too long As solution you can use command: # find . -type f -print -delete Next… Continue Reading
Bind Failed: Permission denied How to solve problem when you cant execute ffmpeg form user and ports are below 1024. In UNIX-like systems, non-root users are unable to bind to ports lower than 1024. You need to be root to… Continue Reading
If you using VestaCP with Cloudflare Global Content Delivery Network (CDN) in logs you will have problem with showing the original visitors IP addresses in logs. Its very easy to fix. Add to NGINX main config file (before include and… Continue Reading
Intel Visual Compute Accelerator (VCA) can crash CentOS 7 if yiu dont have kernel option “nosmap”. Due to CentOS 7.1 not having full support for Intel® Xeon® Processor E5-2600 v4 family, the kernel option “nosmap” must be added when booting… Continue Reading
MySQL Connect Remote Database For remotely access to mysql database use command: mysql -u User -p -h RemoteMySQLdatabaseIP Were: User – remote MySQL server user, RemoteMySQLdatabaseIP – remote MySQL database IP example: # mysql -u User_Name -p -h 11.22.33.44 Enter password:… Continue Reading
We can force to update Ubuntu using ipv4 apt-get -o Acquire::ForceIPv4=true update apt-get -o Acquire::ForceIPv4=true upgrade
VNC error – only supporting 8,15, 16 and 25 bpp rdp connections During Remote Desktop Connection (RDP) from Windows to Linux you can face with VNC error “only supporting 8,15, 16 and 25 bpp rdp connections” It’s very easy to… Continue Reading