Certbot-auto renew error

[giorno]

Hi~
my OS: centos6 .10 today use command:
#sudo ./lets-encrypt/certbot-auto renew --dry-run
show:

Bootstrapping dependencies for Legacy RedHat-based OSes that will use Python3... (you can skip this with --no-bootstrap)
yum is /usr/bin/yum
To use Certbot on this operating system, packages from the SCL repository need to be installed.
Enable the SCL repository and try running Certbot again.
--------------------------------------------------------------------------------------------
and than i use command: 
#yum install centos-release-scl
show:
---------------------------------------------------------------------------------------------
Loaded plugins: fastestmirror, refresh-packagekit, security
Setting up Install Process
Determining fastest mirrors
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
Eg. Invalid release/repo/arch combination/
removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt
Error: Cannot find a valid baseurl for repo: base

how can i do ? to certbot-auto Operating normally

thank everyone

[_az]

CentOS 6 is end-of-life and all of its software repositories have been taken offline. As such, Certbot no longer supports it.

[rg305]

You could try another ACME client.
Like: acme-sh

[giorno]

Thank you everyone. This is really sad news.

[Osiris]

@giorno

This is really sad news.

It shouldn't have come as a surprise. I recommend to invest more time and effort into learning about deprecation of software and keep your software up to date.