User permission to create new File Descriptor
Mat asked: On CentOS 8 I have a Bash script which uses a non-standard file descriptor (/dev/fd/5) and needs to be executed by a standard user (not root). When the …
make ssh remember host's username
exeral asked: I connect to many servers daily. my ssh config default username is "admin" but servers comes from different environnements and username can changes. sometimes it will be "ec2-user" …
Is BBR congestion control available on my host or not
milosgajdos asked: I have been looking into enabling bbr congestion control on some of our servers to test if they make any difference for our workloads. We are on Amazon …
Archlinux nfs is shutting down immediately
Jenia Ivanov asked: I want to setup an NFS server so I setup NFS as in the Archlinux tutorial with two mount points: [[email protected] ~]$ sudo exportfs -arv point 1 …
AAAA with no ANSWER section
vinz asked: When I do dig whoami.akamai.net AAAA on my computer, I got ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32160 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, …
Getting postfix to relay SMTP/SSL/TLS to Charter/Spectrum
Nstevens asked: I’m running Postfix on Debian as an MX for a small LAN and trying to get SMTPS working with mobile.charter.net over port 587. I followed a few links …
Sendmail – retry instead of permanent failure on DNS errors
Hungrig asked: The last few days, our hosting provider has had occasional connectivity issues with one of their upstreams. Each time this happens, we end up with a heap of …
Reize LVM volume with ansible
Jared asked: Short version: how do you resize/extend a logical volume with ansible? It includes built-in support for managing both physical volumes and volume groups and logical volumes. Based on …
Best practices bootstrapping new Ansible servers with the root account
Justin asked: When booting up a new server, if root is the primary account created, what is the best practice to handle running as root the first time a playbook …
installing the ELRepo repository on centos 8 ends with "glibc = 2.17 is needed" error
BEHNAM asked: i’m trying to upgrade centos 8.2 kernel from 4.x to 5.x to resolve the network latency issue caused by network interface driver (TCP packet incompatibilty). so i tried: …