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Anyone who has gone through the trouble of setting up a secure website knows what a hassle getting and maintaining a certificate can be.

Let’s Encrypt automates away the pain and lets site operators turn on and manage HTTPS with simple commands. No validation emails, no complicated configuration editing, no expired certificates breaking your website.

And of course, because Let’s Encrypt provides certificates for free, no need to arrange payment. This page describes how to carry out the most common certificate management functions using the Let’s Encrypt client.

You’re welcome to use any compatible client, but we only provide instructions for using the client that we provide. If you’d like to know more about how this works behind the scenes, check out our how it works page.

Installing Let’s Encrypt 

You can use our certbot-auto wrapper script to get a copy quickly:

wget -q https://dl.eff.org/certbot-auto -O /usr/local/bin/certbot-auto
chmod +x /usr/local/bin/certbot-auto
certbot-auto --install-only

REMI rpm repository providing the latest versions of the PHP stack, full featured, and some other software, to the Fedora and Enterprise Linux RHEL, CentOS, Oracle, Scientific Linux users. It mainly contains (nearly) vanilla versions. Command to install the Remi repository configuration package:

yum install https://rpms.remirepo.net/enterprise/remi-release-7.rpm 

 To install latest redis, memcached and php extensions:

yum --enablerepo=remi, remi-php72 -y install redis memcached php-pecl-redis php-pecl-memcache php-pecl-lzf 

Configure multiple redis instances on port 6379 and 6380:

systemctl disable redis
cat > /etc/systemd/system/redis@.service <<END
[Unit]
Description=Redis %i
After=network.target
OnFailure=service-status-mail@%n.service
PartOf=redis.target
[Service]
Type=simple
User=redis
Group=redis
PrivateTmp=true
PIDFile=/var/run/redis-%i.pid
ExecStart=/usr/bin/redis-server /etc/redis-%i.conf
Restart=on-failure
RestartSec=10
[Install]
WantedBy=multi-user.target redis.target
END