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My Sysadmin Cheatsheet

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Latest posts

Announcement: Jekyll Theme

Block Starlink IPs in Nginx

OneDrive Client for macOS 11.7 Big Sur EOL Workaround

Run Cronjob manually in Kubernetes

Fix Confluence 'JDBC exception on Hibernate data access' Error

Flash SimCom SIM900A Firmware

Mullvad WireGuard VPN on EdgeRouter X/Lite Netflix Bypass Workaround

Mullvad WireGuard VPN on EdgeRouter X/Lite

Kubernetes Cluster on Hetzner Cloud

Create Windows 10 USB Installer on macOS

Record Screen with Audio on macOS with BlackHole

MariaDB Master-Master Replication

Boot Tails from USB Drive in VirtualBox on macOS

SSO with Nginx and Kerberos on Debian

Kerberos Authentication on macOS (SSO)

SSO with Apache and Kerberos on Debian

Secure Mailserver with Postfix, Dovecot & MySQL on Debian Buster

Kali Linux: Full Disk Encryption with Plausible Deniability and Detached LUKS Header on Encrypted USB Boot Drive

Raspberry Pi Tor-over-Ethernet Dongle

Emulate Raspbian (Buster) with QEMU on macOS

Certbot Renewal Hook for Nginx

Backup Debian Server to Backblaze B2 with Duplicity and Duply

Host a Static Jekyll Site on GitHub Pages with Cloudflare HTTPS Support

Install Alpine Linux on ZFS with LUKS Full Disk Encryption

Fix Transfer Rate Drops when Transferring Data from FreeNAS 11.2 to macOS

StrongSwan IPsec Transport Mode Connection between 2 Ubuntu Servers

MariaDB Database Replication with Galera Cluster between 2 Ubuntu Servers

Network File Replication with GlusterFS between 2 Ubuntu Servers

IPsec Site-to-Site VPN between EdgeRouter X/Lite behind NAT and pfSense

Jira with Active Directory Login

Let's Encrypt Wildcard Certificates with Certbot and Cloudflare DNS

Install macOS 10.14 Mojave on a MacBook Pro with OWC Aura SSD

Proxy and Cache Google Fonts with Nginx to Protect Privacy of Users and GDPR Compliance

Use Raspberry Pi Camera IR-CUT LED with Dedicated Power Source and Trigger via GPIO

Connect to the Internet via PPP with Sixfab GSM/GPRS Shield on Raspberry Pi

Generate 1Password TOTP Token for PayPal

Install VMware ESXi on a Hetzner Root Server in Rescue System with KVM Virtualization

Let's Encrypt Wildcard Certificates for HAProxy with Cloudflare DNS Challenge

Scaleway Baremetal Ubuntu Server with Full Disk Encryption

Use GPG Key for SSH Authentication with GnuPG Agent

Install VMware ESXi to a USB Flash Drive on a Hetzner PX121 Root Server without a Virtual CD/Mounted ISO

EdgeRouter Lite/X L2TP VPN with RADIUS Authentication

PXE Boot & Install Windows 10 from a Samba Share

Install macOS High Sierra on MacBook with OWC Aura SSD

Install Zabbix on Raspberry Pi

Crossflash Avago MegaRAID SAS 9341-4i RAID Controller with an IT-mode firmware on a Dell Poweredge T30

Mount Ext4 Filesystem on MacOS

Set-up Nginx with Let's Encrypt Certificate on Debian Jessie for a perfect SSL Labs Rating

Online-Resize of VMware Disk in a Linux VM

Kali Linux with Whonix Tor Gateway on KVM