Setup Nginx with Certbot on Centos with some extras about SELinux

centos-certbot-nginx-selinux.sh

## as root!
sudo -s

# Cannot resolve host: mirrorlist blah blah
# need to add a standard nameserver, like Google DNS to /etc/resolv.conf
cat "nameserver 8.8.8.8" >> /etc/resolv.conf

# git is not installed
yum install git

# update yum first
yum update

# add nginx repo
yum install epel-release

# install nginx
yum install nginx

# edit nginx conf
vi /etc/nginx/conf.d/your.conf

# SELinux issue
# http://stackoverflow.com/a/26228135/5233592
setenforce Permissive
chcon -Rt httpd_sys_content_t /your/www/dir
setenforce Enforcing
systemctl restart nginx

## as normal user
exit

# clone certbot repo
git clone https://github.com/certbot/certbot.git

cd certbot

# Certbot
./certbot-auto certonly --manual --email admin@your.domain -d your.domain

# follow the instructions and get through the challenge

## SELinux
# debug only
sudo setenforce 0 # same as Permissive (disable SE)
sudo setenforce 1 # same as Enforcing  (enable SE)

# enable port for http access
sudo semanage port -a -t http_port_t -p tcp 3000