Using Certbot to remove SSL Certificates
Check Certificates Delete Certificates
Certbot issues SSL Certificates for Nginx on Ubuntu
Install certbot Check certbot version Using certbot to issue Certificates (DNS-01 challenge) Add a DNS TXT record to pass the challenge If pass the challenge Check Certificates Check Nginx settings Restart Nginx
Download Proxmox backup files
Using scp to download Proxmox backup files to local computer From local computer: PS: Proxmox backup files under “/var/lib/vz/dump/”.
Wifi on Old Mac with Ubuntu
Check Wifi adapter Broadcom Adapter BCM4360 Install packages Reboot, and Wifi is working.
Remove Proxmox Cluster
Change Cluster expected number Remove master node