Symptoms
Trying to install the 360 Monitoring agent with wget fails
ERROR: cannot verify monitoring.platform360.io's certificate, issued by '/C=US/O=Let's Encrypt/CN=R3':
Issued certificate has expired.
To connect to monitoring.platform360.io insecurely, use `--no-check-certificate'
Error in cURL request: SSL certificate problem: certificate has expired
Cause
The operating system is outdated, and contains obsolete information about root Certificate Authorities (CA).
Resolution
Connect to the server over SSH
Update the operating system
For RHEL-based (RHEL/CentOS/AlmaLinux/CloudLinux)
# yum update
For Debian-based (Debian/Ubuntu)
# apt update && apt upgrade
Install the agent
