root@xxxx:~# cat /etc/systemd/system/discobot.service
[Unit]
Description=Discord Bot service

[Service]
User=discobot
Group=discobot
ExecStart=/home/discobot/runbot.sh
WorkingDirectory=/home/discobot

[Install]
WantedBy=multi-user.target


root@xxxx:~# cat /home/discobot/runbot.sh
#!/bin/bash
set -e -o pipefail

echo starting up at `date`
export HOME=/home/discobot
source venv/bin/activate
cd discord-reddit-feedbot
git pull
pip install -r requirements.txt  # this is the source of all the "requirement satisfied" messages below - logging works up to this point
python main.py


root@ubuntu-512mb-sgp1-01:~# systemctl status discobot
● discobot.service - Discord Bot service
   Loaded: loaded (/etc/systemd/system/discobot.service; disabled; vendor preset: enabled)
   Active: active (running) since Wed 2017-11-15 04:27:38 UTC; 16min ago
 Main PID: 5868 (runbot.sh)
    Tasks: 5
   Memory: 24.1M
      CPU: 5.130s
   CGroup: /system.slice/discobot.service
           ├─5868 /bin/bash /home/discobot/runbot.sh
           └─5890 python main.py

Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: discord==0.0.2 in /home/discobot/venv/lib/python3.5/site-packa
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: discord.py==0.16.12 in /home/discobot/venv/lib/python3.5/site-
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: idna==2.6 in /home/discobot/venv/lib/python3.5/site-packages (
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: multidict==3.3.2 in /home/discobot/venv/lib/python3.5/site-pac
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: praw==5.2.0 in /home/discobot/venv/lib/python3.5/site-packages
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: prawcore==0.12.0 in /home/discobot/venv/lib/python3.5/site-pac
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: requests==2.18.4 in /home/discobot/venv/lib/python3.5/site-pac
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: update-checker==0.16 in /home/discobot/venv/lib/python3.5/site
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: urllib3==1.22 in /home/discobot/venv/lib/python3.5/site-packag
Nov 15 04:27:41 xxxx runbot.sh[5868]: Requirement already satisfied: websockets==3.4 in /home/discobot/venv/lib/python3.5/site-pack

<There should be some "Bot started, connected to discord, my discord name is blahdeblah" but there's not. The bot is definitely running and responding via Discord as intended, but it's not logging the messages it's sending. Normally they would be print()'d from python and would show up in terminal out when manually running this.>