Linux Webhosting blog

No matter what you’re doing on your computer, you need to do so with an eye to security — that means using strong passwords, storing files in safe locations, and…

Pre-migration steps (DNS) rsync -avHl /var/named/ /home/named.backup/ sed -i -e "s/14400/600/" /var/named/*.db newserial=$(date +%Y%m%d%H) sed -i -e "s/[0-9]\{10\}/$newserial/" /var/named/*.db rndc reload For customers with a large number of domains you…

Set the system wide open file limit: vi /etc/security/limits.conf Change/Add the following: * soft nofile 1024000 * hard nofile 1024000 * soft nproc 10240 * hard nproc 10240 Now do…

In this article, I will take you through the steps to install LXC (Linux containers) on RHEL/CentOS/Rocky Linux but before that let’s understand the first LXD. It is a free…

No matter what you’re doing on your computer, you need to do so with an eye to security — that means using strong passwords, storing files in safe locations, and…

Pre migration steps (DNS) rsync -avHl /var/named/ /home/named.backup/ sed -i -e "s/14400/600/" /var/named/*.db newserial=$(date +%Y%m%d%H) sed -i -e "s/[0-9]\{10\}/$newserial/" /var/named/*.db rndc reload For customers with a large number of domains…

cgroups allow for system resources to be limited for certain user’s processes, which are defined in configuration files. This is useful e.g. if you wish to limit a compiler’s maximum…

To maximize the end-to-end performance of services, applications and databases on a server, system administrators usually carry out custom performance tunning, using various tools, both generic operating system tools as…