Unable to install virtualmin in fresh OS

[root@localhost ~]# sh ./install.sh
ERROR: cannot verify software.virtualmin.com’s certificate, issued by ‘/C=US/O=Let’s Encrypt/CN=R3’:
Issued certificate has expired.
To connect to software.virtualmin.com insecurely, use `–no-check-certificate’.
chmod: cannot access ‘slib.sh’: No such file or directory
./install.sh: line 297: ./slib.sh: No such file or directory

what os? what’s the version of that os?

Looking at the root prompt my guess would be something RHEL based, probably CentOS 7. Stop using that, but if you really want, update your OS before trying to install Virtualmin.

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CentOS Linux release 7.9.2009 (Core)

Will this work but CentOs 8 is what you should use.

  • yum install ca-certificates
  • ./install.sh

There is no reason to install a new server with CentOS 7 today. CentOS 8 is the recommended CentOS version.

If you must use a very old distro for some reason, you need to at least perform standard system updates (i.e. yum update) to get the latest ca-certificates package.

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