02_solution

Deploying our session example

1. change your port number from 8080 to 80

2. create your binary

• GOOS=linux GOARCH=amd64 go build -o [some-name]

1. SSH into your server

• ssh -i /path/to/[your].pem ubuntu@[public-DNS]:

1. create directories to hold your code

• for example, "wildwest" & "wildwest/templates"

1. copy binary to the server

2. copy your "templates" to the server

• scp -i /path/to/[your].pem templates/* ubuntu@[public-DNS]:/home/ubuntu/templates

1. chmod permissions on your binary

2. Run your code

• sudo ./[some-name]
• check it in a browser at [public-IP]

Persisting your application

To run our application after the terminal session has ended, we must do the following:

1. Create a configuration file - sudo nano /etc/systemd/system/<filename>.service

[Unit]
Description=Go Server

[Service]
ExecStart=/home/<username>/<path-to-exe>/<exe>
WorkingDirectory=/home/<username>/<exe-working-dir>
User=root
Group=root
Restart=always

[Install]
WantedBy=multi-user.target

1. Add the service to systemd. - sudo systemctl enable <filename>.service
2. Activate the service. - sudo systemctl start <filename>.service
3. Check if systemd started it. - sudo systemctl status <filename>.service
4. Stop systemd if so desired. - sudo systemctl stop <filename>.service

FOR EXAMPLE

[Unit]
Description=Go Server

[Service]
ExecStart=/home/ubuntu/cowboy
WorkingDirectory=/home/ubuntu
User=root
Group=root
Restart=always

[Install]
WantedBy=multi-user.target