Monitor and Resize Digital Ocean Linnode Volumes

Clone Git Repo

git clone https://github.com/johnashu/digital_ocean_volume_resize.git

To update use git pull

Update .env file

Rename .env.example to .env and edit the following variables:

cp .env.example .env
nano .env

Generate a token in the API section of your provider.

Use whole numbers for the Percentages

Add Email information - See your email provider..

If using Linnode, make sure to setup Email https://www.linode.com/community/questions/19082/i-just-created-my-first-linode-and-i-cant-send-emails-why

Add Vstats Token. On Telegram -> @vStatsBot - use command /token to generate a token.

Toggle the SEND_EMAIL & SEND_ALERT_TO_VSTATS choose True / False to send alerts to these 2.

# Choose DO (Digital Ocean) / LN (Linnode) / XX (Any other with no auto Resize - Alerts only - provide name in PROVIDER_NAME)
PROVIDER=DO
VOLUME_NAME=volume_sfo3_02
PROVIDER_NAME=False # Provide name if PROVIDER=XX  (E.G. Hetzner)

# API Key DO
TOKEN=<DIGITAL_OCEAN_API_KEY>

# # API KEY LN
# TOKEN=<LINNODE_API_KEY>

# Trigger options
INCREASE_BY_PERCENTAGE=5 
BELOW_THIS_PERCENT_TO_RESIZE=5

# Hours in-between checks
HOURS=6

# Email Options
SEND_EMAIL=True
EMAIL_SMTP=smtp.123-reg.co.uk
EMAIL_PASS=<EMAIL_PASSWORD>
EMAIL_FROM=john@maffaz.com
EMAIL_TO=mennovandevlees@gmail.com

# Vstats Telegram Bot Options
SEND_ALERT_TO_VSTATS=True
VSTATS_TOKEN=<VSTATS_TOKEN>

#Monitoring alerts - Space Left
SPACE_LEFT_ALERT=True

install dependencies

sudo apt update && sudo apt upgrade -y

apt install python3-pip

pip3 install -r requirements.txt

Run program.

python3 main.py

create systemd

NOTE: You will need root access. If you do not have this or would prefer not to then you can create a tmux session under your user and skip the below. If you are unsure of the location of /path/to/digital_ocean_volume_resize navigate to the dir and run the command pwd (Path Current Directoy) This will give you the location , i.e. /maffaz/harmony/digital_ocean_volume_resize

cat<<-EOF > /etc/systemd/system/resize_volume.service
[Unit]
Description=resize_volume daemon
After=network-online.target

[Service]
Type=simple
Restart=always
RestartSec=1
User=<USER>
WorkingDirectory=/path/to/digital_ocean_volume_resize
ExecStart=python3 main.py
SyslogIdentifier=resize_volume
StartLimitInterval=0
LimitNOFILE=65536
LimitNPROC=65536

[Install]
WantedBy=multi-user.target
EOF

Trigger SystemD and Check Status

sudo systemctl daemon-reload

sudo chmod 755 /etc/systemd/system/resize_volume.service

sudo systemctl enable resize_volume.service

sudo service resize_volume start

sudo service resize_volume status

Read Logs

tail -f /var/log/syslog

journalctl -xefu resize_volume

log file is in logs/data.log

NOTES

Please be aware that there are discrepencies between what is Reported by the Provider and what is reported by the System

In the Email and alerts you will see 2 seperate values.

Resized Digital Ocean Volume volume-sfo3-02 resizing from 649 GB -> 655 GB

This is the Size that will be displayed in the Volume when you log in to your provider website and check your volume online.
System Original Size : 644 | System New Size: 650

This is the size that will be displayed on your node if you run the command df -h | grep /mnt/<VOLUME_NAME>

i.e.

df -h | grep /mnt/volume_sfo3_02

/dev/sda 650G 412G 210G 67% /mnt/volume_sfo3_02