@systemadmin,

Try run the following commands to install Certbot on CentOS 6.x

# yum install epel-release mod_ssl
# rpm -ivh https://rhel6.iuscommunity.org/ius-release.rpm
# yum --enablerepo=ius install git python27 python27-devel python27-pip python27- setuptools python27-virtualenv -y
# cd letsencrypt
# git clone https://github.com/letsencrypt/letsencrypt
# ./letsencrypt-auto --apache -d example.com -d www.example.com
OR
# ./letsencrypt-auto certonly --webroot -w /var/www/example/ -d example.com

This now doesn’t work on Centos 6. I’m using 6.10 and the error which I get is “Your system is not supported by certbot-auto anymore. Certbot cannot be installed.”

Please suggest

Do you have any clue to spot where is the problem, other info i installed centos with cis security profile at that time.

Thanks for your kind help.

I have followed your instructions above but i stuck.

when i hit below command it install package and asked me to enter e-mail address after enter e-mail address below is full details:

Can anybody help me out as i have no idea about the error.

[root@demotoday letsencrypt]# ./letsencrypt-auto –apache -d demotoday.com

{Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator apache, Installer apache
Enter email address (used for urgent renewal and security notices) (Enter ‘c’ to
cancel): allin.akashsharma@gmail.com

——————————————————————————-
Please read the Terms of Service at
https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf. You must
agree in order to register with the ACME server at
https://acme-v01.api.letsencrypt.org/directory
——————————————————————————-
(A)gree/(C)ancel: A

——————————————————————————-
Would you be willing to share your email address with the Electronic Frontier
Foundation, a founding partner of the Let’s Encrypt project and the non-profit
organization that develops Certbot? We’d like to send you email about EFF and
our work to encrypt the web, protect its users and defend digital rights.
——————————————————————————-
(Y)es/(N)o: N
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for demotoday.com
Waiting for verification…
Cleaning up challenges
Error while running apachectl graceful.

Job for httpd.service invalid.

Unable to restart apache using [‘apachectl’, ‘graceful’]
Failed authorization procedure. demotoday.com (http-01): urn:acme:error:unauthorized :: The client lacks sufficient authorization :: Invalid response from http://demotoday.com/.well-known/acme-challenge/YXy_G1Ii2rJOFsVRJfOycRoJoWDGhlK6B0tyiH9jQyo: ”

<ht"

IMPORTANT NOTES:
– The following errors were reported by the server:

Domain: demotoday.com
Type: unauthorized
Detail: Invalid response from
http://demotoday.com/.well-known/acme-challenge/YXy_G1Ii2rJOFsVRJfOycRoJoWDGhlK6B0tyiH9jQyo:
"

<ht"

To fix these errors, please make sure that your domain name was
entered correctly and the DNS A/AAAA record(s) for that domain
contain(s) the right IP address.
– Your account credentials have been saved in your Certbot
configuration directory at /etc/letsencrypt. You should make a
secure backup of this folder now. This configuration directory will
also contain certificates and private keys obtained by Certbot so
making regular backups of this folder is ideal. }