Installation on a DigitalOcean droplet

[TrystanLea]

Note: For a single user with moderate use, a small VM on a cloud service is likely plenty of performance for an emoncms installation. For applications with a large number of users and feeds the performance of emoncms will depend a lot on how the cloud provider implements storage. Networked disk drives will result in slow performance due to the network latency associated with the way the emoncms feed engines are implemented. VM's on machines with local storage should provide much better performance.

1. Click on 'Create' to create a new cloud server
2. Select Ubuntu, standard $5/month, region e.g London then Create Droplet
3. DigitalOcean email root login details, ssh in using these credentials.
4. Change root password
5. Follow Initial Server Setup with Ubuntu 18.04

adduser oem
usermod -aG sudo oem
ufw allow OpenSSH
ufw enable

logout of root and login with oem.

6. Disable root login:

sudo nano /etc/ssh/sshd_config
PermitRootLogin no
sudo service ssh restart

7. Allow created user to run sudo without password.

sudo visudo

Add to end of visudo file:

oem ALL=(ALL) NOPASSWD:ALL

Save and exit.

8. Start the script

wget https://raw.githubusercontent.com/openenergymonitor/EmonScripts/master/install/init.sh
chmod +x init.sh
./init.sh

9. Modify config.ini for non emonSD installation.

Disable emonhub installation

install_emonhub=false

Disable firmware, emonpilcd, emonsd, wifiap installation

install_firmware=false
install_emonpilcd=false
install_emonsd=false
install_wifiap=false

Set user as applicable and set emonSD_pi_env=0

user=oem
hostname=emonpi
emonSD_pi_env=0

Comment out config, wifi and setup module:

#emoncms_modules[config]=stable
#emoncms_modules[wifi]=stable
#emoncms_modules[setup]=stable

10. Run main installation script:

./main.sh

11. Allow access to port 80 in firewall:

sudo ufw allow 80/tcp

[TrystanLea]

Issues:

• non_emonsd.sh did not run, fixed cce660c
• emoncms register does not disappear after first user creation, fixed: emoncms/emoncms@02f3de3
• services
  • service-runner, fixed: bf3c9a3
  • emoncms_mqtt & feedwriter: 852e72d, 9c4ad96
• missing permissions for /var/log/emoncms, now fixed b3bfec6
• emoncms update UI includes items not installed: firmware & emonhub
• emoncms config module should not be installed

[TrystanLea]

2nd test, with issues above fixed now works a treat!

Remaining issue: emoncms update UI includes items not installed: firmware & emonhub

[TrystanLea]

@borpin I've integrated the service file modifications using the drop-ins to /lib/systemd/.. all working well

[borpin]

• emoncms config module should not be installed

2nd test, with issues above fixed now works a treat!

Did you comment the modules out or is there a logic test?

My last install, I found WiFi installed unless I commented that module out too.

[TrystanLea]

Yes I commented them out. I will work on improved logic in the next version

[TrystanLea]

Latest install test on digitalocean went well, no issues everything running as expected.

[borpin]

Perhaps a 'Digital Ocean' sample config file might help in the repo especially as it will not just be changing values?

[borpin]

Added to documentation. #51

[borpin]

This can probably be closed @TrystanLea?