Fedora CoreOS

In this guide, you will deploy MyEMS on Fedora CoreOS server.

Prerequisites

This guide describes how to install MyEMS on Fedora CoreOS 37. Hardware requirements depend on chosen database and amount of devices connected to the system. To run MyEMS and MySQL on a single machine you will need at least 4GB of RAM.

Update the system and install tools

rpm-ostree install git

rpm-ostree install python3

rpm-ostree install python3-pip

rpm-ostree install nginx

Clone source code:

cd ~
git clone https://github.com/myems/myems

Step 1 Database

See Database

Step 2 myems-api

Install myems-api service:

sudo cp -r ~/myems/myems-api /var/myems-api

cd /var/myems-api

sudo pip install -r requirements.txt

Create .env file based on example.env and edit the .env file if needed:

sudo cp /var/myems-api/example.env /var/myems-api/.env

sudo nano /var/myems-api/.env

Add port to firewall:

sudo firewall-cmd --add-service=http --permanent

sudo firewall-cmd --add-port=8000/tcp --permanent

sudo firewall-cmd --reload

Setup systemd configure files:

sudo cp /var/myems-api/myems-api.service /etc/systemd/system/

sudo cp /var/myems-api/myems-api.socket /etc/systemd/system/

sudo cp /var/myems-api/myems-api.conf /usr/lib/tmpfiles.d/

Next enable the services so that they autostart at boot:

sudo systemctl enable myems-api.socket

sudo systemctl enable myems-api.service

Start the services :

sudo systemctl start myems-api.socket

sudo systemctl start myems-api.service

Step 3 myems-admin

Install NGINX Server

refer to http://nginx.org/en/linux_packages.html#RHEL

Enable the nginx service:

sudo systemctl enable nginx.service

Configure NGINX

sudo nano /etc/nginx/nginx.conf

In the 'http' section, add some directives:

http {
    client_header_timeout 600;
    client_max_body_size 512M;
    gzip on;
    gzip_min_length 512;
    gzip_proxied any;
    gzip_types *;
    gzip_vary on;
    proxy_buffering off;
    ...

}

Add a new file under /etc/nginx/conf.d/

sudo nano /etc/nginx/conf.d/myems-admin.conf

Write with directives as below, and replace the default myems-api url http://127.0.0.1:8000/ with actual url if the myems-api servcie hosted on different server

server {
    listen                 8001;
    server_name     myems-admin;
    location / {
        root    /var/www/myems-admin;
        index index.html index.htm;
    }
    ## To avoid CORS issue, use Nginx to proxy myems-api to path /api
    ## Add another location /api in 'server'
    ## Replace the default myems-api url http://127.0.0.1:8000/ with actual url if the myems-api servcie hosted on different server
    location /api {
        proxy_pass http://127.0.0.1:8000/;
        proxy_connect_timeout 75;
        proxy_read_timeout 600;
        send_timeout 600;
    }
}

Install myems-admin : If the server can not connect to the internet, please compress the myems/myems-admin folder and upload it to the server and extract it to ~/myems/myems-admin

sudo mkdir /var/www

sudo cp -r ~/myems/myems-admin  /var/www/myems-admin

sudo chmod 0755 -R /var/www/myems-admin

Check the config file and change it if necessary:

sudo nano /var/www/myems-admin/app/api.js

caution

The 'upload' folder is for user uploaded files. DO NOT delete/move/overwrite the 'upload' folder when you upgraded myems-admin.

 /var/www/myems-admin/upload

Unlock the port and add the port to firewall:

sudo firewall-cmd --add-service=http --permanent

sudo firewall-cmd --add-port=8001/tcp --permanent

sudo firewall-cmd --reload

Restart the nginx service:

sudo systemctl restart nginx.service

tip

If you encounter '403 Forbidden' nginx error, you may fix it by changing SELinx mode with command 'sudo setenforce 0'

Step 4 myems-modbus-tcp

In this step, you will install myems-modbus-tcp service.

sudo cp -r ~/myems/myems-modbus-tcp /var/myems-modbus-tcp

cd /var/myems-modbus-tcp

sudo pip install -r requirements.txt

Copy exmaple.env file to .env and modify the .env file:

sudo cp /var/myems-modbus-tcp/example.env /var/myems-modbus-tcp/.env

sudo nano /var/myems-modbus-tcp/.env

Modify the file main.py:

fh = RotatingFileHandler('/var/myems-modbus-tcp.log', maxBytes=1024*1024, backupCount=1)

Setup systemd service:

sudo cp myems-modbus-tcp.service /etc/systemd/system/

Enable the service:

sudo systemctl enable myems-modbus-tcp.service

Start the service:

sudo systemctl start myems-modbus-tcp.service

Monitor the service:

sudo systemctl status myems-modbus-tcp.service

View the log:

cat /myems-modbus-tcp.log

Step 5 myems-cleaning

In this step, you will install myems-cleaning service.

sudo cp -r ~/myems/myems-cleaning /var/myems-cleaning

cd /var/myems-cleaning

sudo pip install -r requirements.txt

Copy exmaple.env file to .env and modify the .env file:

sudo cp /var/myems-cleaning/example.env /var/myems-cleaning/.env

sudo nano /var/myems-cleaning/.env

Modify the file main.py:

fh = RotatingFileHandler('/var/myems-cleaning.log', maxBytes=1024*1024, backupCount=1)

Setup systemd service:

sudo cp /var/myems-cleaning/myems-cleaning.service /etc/systemd/system/

Enable the service:

sudo systemctl enable myems-cleaning.service

Start the service:

sudo systemctl start myems-cleaning.service

Monitor the service:

sudo systemctl status myems-cleaning.service

View the log:

cat /myems-cleaning.log

Step 6 myems-normalization

In this step, you will install myems-normalization service.

sudo cp -r ~/myems/myems-normalization /var/myems-normalization

cd /var/myems-normalization

sudo pip install -r requirements.txt

Copy exmaple.env file to .env and modify the .env file:

sudo cp /var/myems-normalization/example.env /var/myems-normalization/.env

sudo nano /var/myems-normalization/.env

Modify the file main.py:

fh = RotatingFileHandler('/var/myems-normalization.log', maxBytes=1024*1024, backupCount=1)

Setup systemd service:

sudo cp /var/myems-normalization/myems-normalization.service /etc/systemd/system/

Enable the service:

sudo systemctl enable myems-normalization.service

Start the service:

sudo systemctl start myems-normalization.service

Monitor the service:

sudo systemctl status myems-normalization.service

View the log:

cat /myems-normalization.log

Step 7 myems-aggregation

In this step, you will install myems-aggregation service.

sudo cp -r ~/myems/myems-aggregation /var/myems-aggregation

cd /var/myems-aggregation

sudo pip install -r requirements.txt

Copy exmaple.env file to .env and modify the .env file:

sudo cp /var/myems-aggregation/example.env /var/myems-aggregation/.env

nano /var/myems-aggregation/.env

Modify the file main.py:

fh = RotatingFileHandler('/var/myems-aggregation.log', maxBytes=1024*1024, backupCount=1)

Setup systemd service:

sudo cp /var/myems-aggregation/myems-aggregation.service /etc/systemd/system/

Enable the service:

sudo systemctl enable myems-aggregation.service

Start the service:

sudo systemctl start myems-aggregation.service

Monitor the service:

sudo systemctl status myems-aggregation.service

View the log:

cat /myems-aggregation.log

Step 8 myems-web

In this step, you will install myems-web UI service.

Install NGINX Server

refer to http://nginx.org/en/linux_packages.html#RHEL

Configure NGINX

Remove default files

sudo rm /etc/nginx/sites-enabled/default
sudo rm /etc/nginx/conf.d/default.conf

Add a new file under /etc/nginx/conf.d/

sudo nano /etc/nginx/conf.d/myems-web.conf

Add a new 'server' section with directives as below:

server {
    listen                 80;
    server_name     myems-web;
    location / {
        root    /var/www/myems-web;
        index index.html index.htm;
        # add try_files directive to avoid 404 error while refreshing pages
        try_files $uri  /index.html;
    }
    ## To avoid CORS issue, use Nginx to proxy myems-api to path /api
    ## Add another location /api in 'server'
    ## replace the default myems-api url http://127.0.0.1:8000/ with actual url if the myems-api servcie hosted on different server
    location /api {
        proxy_pass http://127.0.0.1:8000/;
        proxy_connect_timeout 75;
        proxy_read_timeout 600;
        send_timeout 600;
    }
}

Install MyEMS Web UI:

Setup NodeJS:

sudo dnf install nodejs

Modify the config.js file:

note

Get mapboxToken at https://mapbox.com and then set showOnlineMap to true. If you wnat to turn off online map feature, set showOnlineMap to false

cd ~/myems/myems-web

sudo nano src/config.js

Build and Compress

sudo npm i --unsafe-perm=true --allow-root --legacy-peer-deps

sudo npm run build

Install Upload the files to you web server. Note that the following path should be same as that was configured in nginx.conf.

sudo mv build  /var/www/myems-web

Unlock the port and add the port to firewall:

sudo firewall-cmd --add-service=http --permanent

sudo firewall-cmd --add-port=80/tcp --permanent

sudo firewall-cmd --reload

Restart the nginx service:

sudo systemctl restart nginx.service

tip

If you encounter '500 Internal Server Error' nginx error, you may fix it by changing SELinx mode with command 'sudo setenforce 0'

Post-installation

Congratulations! You are able to login the MyEMS Admin UI and Web UI now.

Default Ports

MyEMS Web UI: 80

MyEMS API: 8000

MyEMS Admin UI: 8001

Default Passwords

Admin UI

administrator

!MyEMS1

Web UI

administrator@myems.io

!MyEMS1

Fedora CoreOS

Prerequisites​

Step 1 Database​

Step 2 myems-api​

Step 3 myems-admin​

Step 4 myems-modbus-tcp​

Step 5 myems-cleaning​

Step 6 myems-normalization​

Step 7 myems-aggregation​

Step 8 myems-web​

Post-installation​

Default Ports​

Default Passwords​

Troubleshooting​

Prerequisites

Step 1 Database

Step 2 myems-api

Step 3 myems-admin

Step 4 myems-modbus-tcp

Step 5 myems-cleaning

Step 6 myems-normalization

Step 7 myems-aggregation

Step 8 myems-web

Post-installation

Default Ports

Default Passwords

Troubleshooting