Topic: System Administration & Network Administration

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Recent Articles

Pod is stuck in PodInitializing status when an initContainer is OOMKilled

Transferring PDCEmulator FSMO role from Windows Server 2012R2 to 2022

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Odd process appearing about every 18-20 minutes that runs 'apt-get --just-print dist-upgrade'

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Support staff can reset some User passwords but not all?

ExecStart has a '-' prefix but the unit is still failed

Does the email size limit include the size of the body?

Should mail servers avoid sharing /64 ipv6 with others for reputation?

ISC DHCP/DDNS setup: Static entries for non-dhcp clients

Why SSH still works after applying SNAT and DNAT rules to forward ip (on the SSH server)?

postfix loops back to myself email issue (was working before apt upgrade Ubuntu)

Is there a way to programatically determine whether a Windows computer is AAD joined as SYSTEM?

Use an external subdomain as a zone in my local DNS server

Operation of certbot and nginx

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bash script – MySQL commands and variables

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docker containaer promiscuous mode partially working

Upgrade GCP hosted PostgreSQL while keeping existing user passwords

One user unable to connect to non-domain joined computers

Unable to rebuild the Raid 1 Array (intel RST Raid 1) in BIOS and in OS(Ubuntu server 20.04.4)

Is it possible to connect to a user session and see its output in Linux?

What is the difference between 0.0.0.0/0 and 0.0.0.0/1?

Setting up an Access Point, Raspberry Pi, and Laptop to serve a website in a classroom. "The internet in a suitcase"

Remove RRSIG record from GoDaddy subdomain

Understanding how Unbound listen on Port 53

DNS - Unbound - How to provide different IP for a server based on client network

Ansible OpenSSL Error with apt module

How to filter and deliver a message in Procmail

what's root cause of "A start job is running for Create Volatile Files and Directories"

Forward HTTP (or TCP) request through NGINX using subdomain to a specific port

Cannot access docker container from outside the OS that is running it

Is it possible to lock sudo from the command line, without editing sudoers or logging out and back in?

How to redirect to https for multiple subdomains configured as ServerAlias?

Can't start Nginx, Brotli configuration error

Can PAM be used with Postfix and Dovecot SASL?

Ansible with_items not looping

DDOS AWS API Gateway protection

Amazon AWS RDS Burst Balance vs CPU Credit Balance

How to invoke a .env file into a Django project that runs in a Docker container on a K8s server?

Difference between AWS EC2 T4g and T3a instance types?

How to nginx + proxy_pass to docker container with ssl?

How to execute some command always after hard reboot (ubuntu server)?

Tcpdump showing different redirection port after adding REDIRECT rule in iptables

Continue statement doesn't work as it should - bash

Windows certificate import not accepting private key password

How to set up DNS settings with a domain in the middle for DKIM and SPF?

Generate PFX file from private key and CRT files

Interpreting LastLogon vs. LastLogonTimestamp

Keepalived going split brain when Firewalld is running

Does systemd fail if a dependency in After=/Requires= doesn't exist?

SSH times out over OpenVPN until destination is ping'ed

Safely store AWS IAM User Keys (Access and Secret) created by IaC

gMSA account authentication failure during password rotation

Bitlocker Encryption on RAID 0 kicks drive out of array half-way through

SSH usually hangs before password prompt

Configuring sendmail to listen on an alternative port

How to increase quota limit for number of build triggers in GCP project

How to fix the security group to the EC2 instance to allow specific IP address

Send response back through same device for connections coming in through Wireguard

Postfix causes issues when its service is enabled using systemctl and doesn't launch on boot

Operation time out when attempting to ssh to server

Puppet manifest configuration for docker image verification

Apache server .htaccess set header for Content-Security-Policy causes 500 error

Run commands that run in a shell as a script

Elastic BeanStalk environment variable update fails

ORA-210000 Oracle error: ORA-12154: TNS:could not resolve the connect identifier specified

Configure Domain name to Virtual Machine - Azure

Windows share not respecting NTFS permissions?

How do I create a Kubernetes service that routes traffic to different pods based on the port?

root login or sudo user for server administration?

Connecting to Amazon RDS using SSH client

How to permanently remove /dev/zram0 as swap in Armbian

Nginx webserver access.log unusual $host

Failing to run yum update in CentOS 8

CentOS 9 Stream - errors doing yum update

Can I make a folder on a vhost access a site held in another vhost?

Fail2ban bantime.increment not working

How to expand partition that is in the middle of other partitions (or create new and migrate data over)

nginx large file upload limit

Docker network timeouts when using bridge

how to stop, start and delete a windows service in cmd with a reference to the service name

Why multicast UDP can be slower than unicast UDP?

Exchange 2019 Email Address Policy per user

KDC has no support for encryption type while authentication to OpenLDAP

How to restrict a user to rbash when logging in via SSH

LDAP finds user, but "permission denied" when logging in

Exchange Online Group Calendar entries are not replicated to all members

How to start a service without the need to change password

Run Systemd Service After Display Manager

Solved - Router as WireGuard client | External User IP is shown to be WireGuard tunnel's local IP on home server [EdgeRouter]

Solved - Router as WireGuard client | External User IP is shown to be WireGuard tunnel's local IP on home server [EdgeRouter]

iptables list line numbers script iptables-save -bash: number-rules: command not found