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Install Tomcat 8.x in AWS EC2 Instance (Amazon Linux AMI)

You will find as well the configuration of Nginx and PostgreSQL. Special thanks to @caden for the contribution!

Software to install

  • Java 8
  • Tomcat 8.x

Check YUM Updates

sudo su
yum list installed
yum update

Install Java 8

yum install java-1.8.0
yum remove java-1.7.0-openjdk

Install Tomcat 8.x

yum install tomcat8 tomcat8-webapps tomcat8-admin-webapps tomcat8-docs-webapp

Start Tomcat Service

service tomcat8 start

Tomcat Paths

1 Edit the tomcat-users file

cd  /usr/share/tomcat8
vim /usr/share/tomcat8/conf/tomcat-users.xml

2 Add this line according your desired configuration (vi commands: "i" for insert mode, "ESC" key to escape the inserting mode, ":wq" for write an quit)

<user name="admin" password="YOURPASSWORD" roles="admin,manager,admin-gui,admin-script,manager-gui,manager-script,manager-jmx,manager-status" />

Check Tomcat Installation

  • fuser: to display the process id(PID) of every process using the specified files
fuser -v -n tcp 8080
  • netstat: to list out all the network (socket) connections on a system
netstat -na | grep 8080

Set Auto Start for Tomcat Service

sudo chkconfig --list tomcat8
sudo chkconfig tomcat8 on

Install Nginx

yum install nginx

Add Nginx Domain Binding

vi /etc/nginx/conf.d/shenhe.org.conf

server {
    listen       80;
    listen       [::]:80;
    server_name  shenhe.org;
    root         /usr/share/nginx/html;
    location / {
        proxy_connect_timeout 300;
        proxy_send_timeout 300;
        proxy_read_timeout 300;
        proxy_pass http://localhost:8080;
        }
}

You can add more bindings. It’s similar. If you just want nginx to handle static files (like images, javascript, css etc), you just do it like this:

server {
    listen       80;
    listen       [::]:80;
    server_name  static.shenhe.org;
    root         /usr/share/nginx/html;
}

Start Nginx

service nginx start

Set Auto Star for Nginx Service

sudo chkconfig --list nginx
sudo chkconfig nginx on

Install PostgreSQL

sudo yum install postgresql postgresql-server

Initialize postgresql DB

sudo service postgresql initdb

Start PostgreSQL

sudo service postgresql start

Login in with postgres

sudo -u postgres psql

Change Password

\password postgres

Quit

\q

Enable Remote Access

sudo vi /var/lib/pgsql9/data/pg_hba.conf

Add you IP to trust IP

host all all 125.69.29.0/24     trust

Also change this line from

host    all             all             127.0.0.1/32            ident

To

host    all             all             127.0.0.1/32            md5

sudo vi /var/lib/pgsql9/data/postgresql.conf

Change

#listen_addresses = 'localhost'

To

listen_addresses = '*'

Auto Start PostgreSQL

sudo chkconfig --list postgresql
sudo chkconfig postgresql on

Add swap to EC2

sudo /bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=2048
sudo /sbin/mkswap /var/swap.1
sudo chmod 600 /var/swap.1
sudo /sbin/swapon /var/swap.1

Auto mount Swap

To enable it by default after reboot, add this line to /etc/fstab:

/var/swap.1  swap        swap    defaults        0   0