Articles by Deepak Prasad
How to create anaconda updates.img used with inst.updates in RHEL 7/8
Steps to create anaconda updates.img also called as product,img with inst,updates in RHEl 7 and 8 during ISO or PXE installation Extract and rebuild updates.img …
2 ways to update and rebuild initrd image in CentOS/RHEL 7 and 8
Steps to extract, modify, update and rebuild initrd image in CentOS RHEL 7 and 8 ISO DVD with examples using XZ / LZMA format Update initrd with modules drivers …
How to properly update kernel in RHEL/CentOS 7/8 Linux
Steps to update kernel properly in production environment with examples. Precautions to be considered before and after you update kernel in RHEL/CentOS 7 and 8
How to check security updates list & perform linux patch management RHEL
Perform Linux patch management in RHEL 6/7/8 Linux in LIVE production environment. Identify vulnerabilities list and security updates list then apply patch
Create man page in Linux with examples (sample man page template)
Create man page using man page template with groff. Various man page examples to create table, bullet points etc. Create user specific man page in Linux.
How to enable persistent logging in systemd-journald without reboot
Enable persistent logging in systemd-journald by changing storage type to persistent in journald.conf to store logs in /var/log/journal without reboot
Understanding systemd-journald and how logging works with Journal in RHEL 7
An overview on systemd-journald service, how logging happens in RHEL 7 Linux with Journals and systemd-journald logrotate. Compare systemd-journald vs rsyslogd
How to exclude some accounts from being locked after multiple incorrect password
Exclude some accounts from being locked out in Linux after providing multiple incorrect password using pam_tally2 and pam_faillock insystem-auth password-auth
How to implement password policy in RHEL Linux with examples
Learn to implement password policy with complexity, old password reuse and more using pwquality.conf explained with examples in RHEL/CentOS 7 Linux
How to prevent user from using old password (or re-using) again in Linux
How to prevent user from using old password or reusing old password while providing new password in CentOS/RHEL 7 Password has been already used. Choose another …
8 ways to prevent brute force SSH attacks in Linux (CentOS/RHEL 7)
Prevent brute force SSH attacks in RHEL CentOS 7 with examples using Fail2ban, account lockout, SSH rate limit using iptables, sshd_config, SHA512 hashing
Step-By-Step Tutorial: Use rootkit malware scanner (rkhunter) to detect malware
Perform rootkit malware scanner centos rhel linux using rkhunter. detect rootkit malware using rkhunter with examples. Analyse rkhunter logs
How to upgrade or downgrade virtual connect firmware in HPE using vcsu
Steps to upgrade or downgrade virtual connect firmware using VCSU in Linux or Windows with examples non-interactive. Upgrade also possible with incompatible VC. …
How to check and set Java timezone (update tzdata for openJDK) using tzupdater
Steps to set java timezone using tzupdater update tzdata for openjdk in CentOS RHEL SLES. Check current tzdayta version in JRE java -jar tzupdater.jar -V
Fix: the domain status of virtual connect manager is not ok update will not continue
Earlier I was getting an error "The domain status of Virtual Connect Manager is not OK Update will not continue" while performing firmware upgrade of my Virtual …