Build a least-privilege PostgreSQL 18 permission layout on AlmaLinux 10: owner, read-only and read-write group roles, login roles, CONNECT and schema grants, ALTER DEFAULT PRIVILEGES, pg_hba.conf group rules, and safely dropping roles.
Setup SSH Password-less Login Linux Setup SSH Password-less Login Linux if you have not yet, install openssh-clients on BOTH Systems the first thing you want to do is setup the…
Install PostgreSQL 18 on AlmaLinux 10 from AppStream or the PGDG repo, run initdb, configure pg_hba.conf with scram-sha-256, and allow remote access through firewalld with SELinux enforcing.
send different username ssh-keygen CentOS send different username ssh-keygen CentOS say you setup ssh-keygen on an account on your external computer to a network server, it works great as long…
Step-by-step guide to troubleshooting stuck and hung NFS mounts on AlmaLinux 10: hard vs soft mounts, D-state processes, stale file handles, forced and lazy unmounts, rpcinfo, nfsstat, tcpdump and server-side checks.
firewall-cmd cheat sheet for RHEL, AlmaLinux, Rocky Linux, Oracle Linux and CentOS Stream: zones, services, ports, rich rules, NAT, policies, IP sets and troubleshooting.
Build a central rsyslog log server on RHEL, AlmaLinux, Rocky Linux, Oracle Linux and CentOS Stream: TCP forwarding with disk queues, per-host files, logrotate, SELinux, firewalld and TLS.
Use Basic Authentication Squid Use Basic Authentication Squid In this scenario we are configuring a HTTP proxy to require basic authentication, such as a username/password combo. We are assuming that…
Find Next FSCK Date CentOS Find Next FSCK Date CentOS Linux FSCK runs at what seems random times. It’s specific to EXT filesystems (ext3, ext4) Let’s dig in: the basic…
Resume CUPS Printer command line CentOS 6 Resume CUPS Printer command line CentOS 6 In this scenario we have a printer that is “paused” in CUPS for one reason or…
