Using FIO to evaluate disc operation

Random read/write test
– Create 256MB file.
– Perform 4KB reads and writes.
– Using a 75%/25% (3 reads every 1 write) split within the file.
– 64 operations running at a time


Integrate Let’s Encrypt SSL certificate to OpenVPN Access Server site

Follow this article:

Auto renew by adding crontab

renew_ssl is a bash script as below