Ethminer: Daemon mode on Linux?

[kkkrackpot]

Hi,

How it is possible to run ethminer on Lin in daemon mode?

Regards,
Alex

[RyanF109]

not sure if it has daemon mode but I use screen:

sudo apt update && sudo apt install screen
screen ethminer

Ctrl + A followed by Ctrl + D will disconnect the screen and leave it running in the background.

[Preisschild]

or you can start it per /etc/rc.local with /path/to/miner > /where/output/should/be and then you can tail

[kkkrackpot]

With screen it kinda works.
It would be good if ethminer has its own daemon mode, though...

[wcpannell]

I have mine running in a simple systemd unit. Assuming your distro runs
systemd for it's pretty simple and automatically logs stderr/stdout.
Viewable with journalctl.

On Sep 13, 2017 2:20 AM, "Kranky K. Krackpot" [e-mail]
wrote:

With screen it kinda works.
It would be good if ethminer has its own daemon mode, though...

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[AndreaLanfranchi]

Create a miner bash script like this:

#!/usr/bin/env bash
ps cax | grep ethminer > /dev/null
if [ $? -eq 0 ]; then
  echo "Ethminer is already running."
else
  echo "Ethminer being launched"
nohup <path-to-ethminer>/ethminer -U \
    -S "<your-pool>" -FS "your-fall-back-pool" \
    --stratum-protocol 1 --report-hashrate \
    -O "$ETH_ADDRESS.$RIGNAME/$MY_EMAIL" -v 9 --farm-recheck 500  \
    >> /var/log/miner.log 2>&1 </dev/null & echo $! > /var/run/miner.pid & sleep 10
fi

Then by crontab -e add
@reboot sleep 180 && bash <full-path-to-your-miner-bash-script>

This will start ethminer at boot or you can issue it manually.
If you want to check log simply tail logfile.

[kkkrackpot]

@AndreaLanfranchi Will try it, thanks!

[bmatthewshea]

Can also add init.d script using 'start-stop-daemon' -
(Debian/Ubuntu example follows)

1. Copy this to /etc/init.d/ethminer :
   https://gist.github.com/bmatthewshea/9a062c092fd673318f8d208ce44f4f51

2. Update top portion of script ^ as needed.

3. Execute:

# user you run this under - the log area needs to be owned by that user ('ubuntu' user example):
sudo mkdir /var/log/miners && sudo chown ubuntu:adm /var/log/miners

sudo chown root:root /etc/init.d/ethminer
sudo chmod 755 /etc/init.d/ethminer
sudo update-rc.d  ethminer defaults
sudo update-rc.d  ethminer enable
sudo systemctl daemon-reload
#and finally, start miner in background:
sudo service start ethminer                 # or sudo systemctl start ethminer.service

1. Monitor:
   tail -f /var/log/miners/ethminer.log
   Please see this: https://gist.github.com/bmatthewshea/6bad5242dbf270ef881c033918b947c0 for a way to monitor* this service for inactivity/restart using a crontab script.

2. Stop with:
   sudo service ethminer stop
   or
   sudo systemctl stop ethminer.service

* You could also use a tool like Monit (or others) to watch the process/PID for activity and have it restart ethminer service if there's a problem. I choose to do this myself by having a cronjob watch the log file for movement. NOTE/HINT: Watching the PID alone doesn't work if ethminer binary simply stalls and doesn't exit with error - which is almost always the case when it has an issue. Watch the console output/log instead.