- 1. Create a New User
- 2. Prepare for installation
- 2.1 Install NODE.JS with node version manager
- 3. Install Mongo DB
- 4. Install CGM-Remote-Monitor (Nightscout)
- 5. Create Reverse nginx proxy
- 6. Create a Nightscout service
- 7. Let's Encrypt SSL
When you obtain your Ubuntu instance from VPS provider you receive root's login and root's password. From this moment follow the procedure.
Once you are logged in your Ubuntu instance as root, you are prepared to add the new user account that we will use to log in from now on.
This command creates a new user called “mainuser”, but you can replace it with a username that you like:
# adduser mainuser
Grant Root Privileges for the mainuser:
# usermod -aG sudo mainuser
Verify mainuser and its Privileges:
# su mainuser
$ grep '^sudo' /etc/group
sudo:x:27:ihc,mainuser
Update the Ubuntu instance:
sudo apt-get update && sudo apt-get upgrade
Check that Ubuntu instance has Python, npm, nodejs, git installed.
$ python3 --version
Python 3.6.9
Ubuntu 18.04 comes with pre-installed Python 3 as a default python interpreter. But we need python 2:
$ sudo apt install python
Then check installation:
$ python -V
Python 2.7.17
Then check git is installed:
$ git --version
git version 2.17.1
To check that nodejs is install run command:
$ dpkg --get-selections | grep node
If you want to install another version of nodejs, remove the old one:
$ sudo apt purge nodejs
To install Node js on Ubuntu 18.04 with NVM we need C++ copiler and some other tools. To install them run command:
$ sudo apt install build-essential checkinstall
We also need libssl:
$ sudo apt install libssl-dev
To install NVM run:
$ wget -qO- https://raw.githubusercontent.com/creationix/nvm/v0.33.8/install.sh | bash
Restart terminal or run:
$ source /etc/profile
Look throw Node js avalibale versions:
$ nvm ls-remote
Now install Node js. It obligatory to point a version of node js:
$ nvm install 10.0
A list of installed versions of node js can be viewed by:
$ nvm list
Tell the NVM what version of node js to use:
$ nvm use 10.0
For further update to remove installed version it should be deactivated:
$ nvm deactivate 10.0
And now can be removed:
$ nvm uninstall 10.0
First of all, import GPK key for the MongoDB apt repository on your system using the following command. This is required to test packages before installation
$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 4B7C549A058F8B6B
Lets add MongoDB APT repository url in /etc/apt/sources.list.d/mongodb.list.
$ echo "deb [ arch=amd64 ] https://repo.mongodb.org/apt/ubuntu bionic/mongodb-org/4.2 multiverse" | sudo tee /etc/apt/sources.list.d/mongodb.list
After adding required APT repositories, use the following commands to install MongoDB on your systems. It will also install all dependent packages required for MongoDB.
$ sudo apt update
$ sudo apt install mongodb-org
If you want to install any specific version of MongoDB, define the version number as below. In order to migrate from Atlas I choose the same version of Mongo DB.
$ sudo apt install mongodb-org=4.2.9 mongodb-org-server=4.2.9 mongodb-org-shell=4.2.9 mongodb-org-mongos=4.2.9 mongodb-org-tools=4.2.9
After installation, MongoDB will start automatically. To start or stop MongoDB uses init script. Below are the example commands to do.
$ sudo systemctl enable mongod
$ sudo systemctl start mongod
Use the following commands to stop or restart MongoDB service.
$ sudo systemctl stop mongod
$ sudo systemctl restart mongod
Finally, use the below command to check installed MongoDB version on your system.
$ mongod --version
db version v4.2.8
git version: 43d25964249164d76d5e04dd6cf38f6111e21f5f
OpenSSL version: OpenSSL 1.1.1 11 Sep 2018
allocator: tcmalloc
modules: none
build environment:
distmod: ubuntu1804
distarch: x86_64
target_arch: x86_64
Also, connect MongoDB using the command line and execute some test commands for checking proper working.
$ mongo
> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
> use admin
switched to db admin
> quit()
Then create a new database and a new user:
$ mongo
> use Nightscout
> db.createUser({user: "mainuser", pwd: "YouPassword", roles:["readWrite"]})
> quit()
Check you location:
$ pwd
> /home/mainuser
Download cgm-remote-monitor (nightscout) from github:
$ git clone https://github.com/nightscout/cgm-remote-monitor.git
Alternatively fork a copy of cgm-remote-monitor and clone your own copy.
cd cgm-remote-monitor
Install cgm-remote-monitor:
$ git checkout dev
$ npm install
Now setup your cgm-remote-monitor environment and create start file:
$ nano start.sh
Paste those lines (a detailed description of the variables is here):
#!/bin/bash
# environment variables
export MONGO_CONNECTION="mongodb://mainuser:YouPassword@localhost:27017/Nightscout"
export BASE_URL="127.0.0.1:1337"
export API_SECRET="YOUR_API_SECRET_HERE"
export PUMP_FIELDS="reservoir battery status"
export OPENAPS_FIELDS="ion meal-assist rssi"
export DEVICESTATUS_ADVANCED=true
export ENABLE="careportal iob cob sage openaps loop pump profile bwg rawbg basal"
export TIME_FORMAT=24
export INSECURE_USE_HTTP=true
export ALARM_HIGH=off
export ALARM_LOW=off
export ALARM_TIMEAGO_URGENT=on
export ALARM_TIMEAGO_URGENT_MINS=30
export ALARM_TIMEAGO_WARN=on
export ALARM_TIMEAGO_WARN_MINS=15
export BG_HIGH=200
export BG_LOW=80
export BG_TARGET_BOTTOM=100
export BG_TARGET_TOP=170
export CUSTOM_TITLE=LenaCGMS
export DISPLAY_UNITS=mmol
export PUMP_ENABLE_ALERTS=true
export PUMP_URGENT_BATT_V=1.32
export SAGE_URGENT=330
export SAGE_WARN=312
export SHOW_FORECAST=openaps
export THEME=colors
# start server
/home/mainuser/.nvm/versions/node/v10.16.3/bin/node server.js
We should make start.sh executable:
$ chmod +755 start.sh
You can now run Nightscout by entering:
$ ./start.sh.
Install nginx:
$ sudo apt-get install nginx
edit this file:
$ sudo nano /etc/nginx/sites-available/default
Delete the existing contents and replace with this:
server {
listen 80;
server_name example.com;
location / {
proxy_pass http://127.0.0.1:1337;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}
Then restart the nginx service:
$ sudo service nginx restart
I recommend using a systemd service which automatically starts Nightscout on system startup. To do so, create file:
$ sudo nano /etc/systemd/system/nightscout.service
and paste the following configuration:
[Unit]
Description=Nightscout Service
After=network.target
[Service]
Type=simple
WorkingDirectory=/home/mainuser/cgm-remote-monitor
ExecStart=/home/mainuser/cgm-remote-monitor/start.sh
[Install]
WantedBy=multi-user.target
Reload systemd:
$ sudo systemctl daemon-reload
Start and enable
$ sudo systemctl enable nightscout.service
$ sudo systemctl start nightscout.service
Finally check if the service is running:
$ sudo systemctl status nightscout.service
install Let's Encrypt:
$ sudo apt-get install letsencrypt python-certbot-nginx
Stop ngnix service:
$ sudo service nginx stop
Obtain letsencrypt certificate:
$ sudo letsencrypt certonly
How would you like to authenticate with the ACME CA?
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
1: Nginx Web Server plugin - Alpha (nginx)
2: Spin up a temporary webserver (standalone)
3: Place files in webroot directory (webroot)
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Select the appropriate number [1-3] then [enter] (press 'c' to cancel):
> 2
Enter your domain name when prompted. This will create the certificates for your domain name. The certificates should now be available at "/etc/letsencrypt/live/your_domain_name"
Improve SSL security by generating a strong Diffie-Hellman group:
$ sudo openssl dhparam -out /etc/ssl/certs/dhparam.pem 2048
Modify the nginx-file, filling in your domain name as in the example below:
$ nano etc/nginx/sites-enabled/defaults
server {
listen 80;
server_name yourdomain.com;
location / {
proxy_pass http://127.0.0.1:1337;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
listen 443 ssl;
server_name yourdomain.com;
root /usr/share/nginx/html;
ssl_certificate /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/privkey.pem;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
ssl_dhparam /etc/ssl/certs/dhparam.pem;
ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM$
CDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AE$
HE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-EC$
84:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES$
RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-$
HA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aE$
S-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_stapling on;
ssl_stapling_verify on;
add_header Strict-Transport-Security max-age=15768000;
location ~ /.well-known {
allow all;
}
}
Close the editor and check that your nginx configuration file is valid:
$ sudo nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
If there are errors in your configuration file, the command's output will tell you exactly where in the file the error was found.
Restart nginx:
$ sudo service nginx restart
You can test the quality of the SSL connection using: https://www.ssllabs.com/ssltest/analyze.html?d=your_domain_name Unfortunately only works with port 443
Arrange auto renewal of certificates. Add this line to the su crontab:
$ sudo crontab -e
30 2 * * 1 certbot renew >> /var/log/le-renew.log
Hopefully your instance of Nightscout works fine!
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