Install Jenkins on RHEL/CentOS behind Nginx

Install and configure Nginx and Java
Install Nginx using this guide
Install Java using this guide

Install updates and basic tools
sudo yum -y install update
sudo yum -y install git lsof wget curl

Add the Jenkins repository to available packages
sudo wget -O /etc/yum.repos.d/jenkins.repo http://pkg.jenkins-ci.org/redhat/jenkins.repo
sudo rpm --import http://pkg.jenkins-ci.org/redhat/jenkins-ci.org.key

Install Jenkins
sudo yum install jenkins

Start Jenkins up and make sure it starts every time we reboot
sudo service jenkins start
sudo chkconfig --add jenkins

Verify that Jenkins is accessible
curl http://localhost:8080

Reverse Proxy Jenkins via nginx and handle SSL [nginx.conf]
user nginx;
worker_processes auto;

error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;

events {
worker_connections 1024;
}

http {
include /etc/nginx/mime.types;
default_type application/octet-stream;

log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';

access_log /var/log/nginx/access.log main;

sendfile on;
tcp_nopush on;
tcp_nodelay on;

#keepalive_timeout 0;
keepalive_timeout 65;
types_hash_max_size 2048;

gzip on;

server {
listen 443;
server_name jenkins.yebbare.com;

ssl on;
ssl_certificate /opt/ssl/ssl.crt;
ssl_certificate_key /opt/ssl/ssl.key;

ssl_protocols TLSv1;
ssl_ciphers HIGH:!aNULL:!MD5;
ssl_prefer_server_ciphers on;

#this is the jenkins web root directory (mentioned in the /etc/default/jenkins file)
root /var/run/jenkins/war/;

access_log /var/log/nginx/jenkins.access.log;
error_log /var/log/nginx/jenkins.error.log;

location ~ "^/static/[0-9a-fA-F]{8}\/(.*)$" {
rewrite "^/static/[0-9a-fA-F]{8}\/(.*)" /$1 last;
}

location /userContent {
root /var/lib/jenkins/;

if (!-f $request_filename) {
rewrite (.*) /$1 last;
break;
}
sendfile on;
}

location @jenkins {
sendfile off;
proxy_pass http://127.0.0.1:8080;
proxy_redirect http:// https://;

proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_max_temp_file_size 0;

#this is the maximum upload size
client_max_body_size 10m;
client_body_buffer_size 128k;

proxy_connect_timeout 90;
proxy_send_timeout 90;
proxy_read_timeout 90;

proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
}

location / {
# Optional configuration to detect and redirect iPhones
if ($http_user_agent ~* '(iPhone|iPod)') {
rewrite ^/$ /view/iphone/ redirect;
}

try_files $uri @jenkins;
}
}
}

Restart Nginx gracefully
sudo nginx -ts reload
sudo systemctl restart nginx