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
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Connect to the server over SSH
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Update the operating system
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For RHEL-based (RHEL/CentOS/AlmaLinux/CloudLinux)
# yum update
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For Debian-based (Debian/Ubuntu)
# apt update && apt upgrade
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Install the agent
