Script to restart Domoticz if it crashes Topic is solved

[jannl]

I test if domoticz is running by issuing a json call. The status of the service might be ok even if domoticz hangs.

[adjego]

I also have this happening.

Jan 3 23:22:00 raspberrypi domoticz: Error: /home/pi/domoticz/domoticz() [0x1a9650]
Jan 3 23:22:00 raspberrypi domoticz: Error: /home/pi/domoticz/domoticz(_Z14signal_handleri+0x58) [0x1a9708]
Jan 3 23:22:00 raspberrypi domoticz: Error: /lib/arm-linux-gnueabihf/libc.so.6(__default_sa_restorer_v2+0) [0x76b9eb20]
Jan 3 23:22:00 raspberrypi domoticz: Error: /lib/arm-linux-gnueabihf/libc.so.6(gsignal+0x40) [0x76b9d8dc]

Is there an actual fix for this issue?
I now have the script in place, but it's a workaround, not a fix.

@jannl, can you share your script?

[jannl]

Basically the script I use is in the wiki:

https://www.domoticz.com/wiki/Monitoring_domoticz

I only tweaked the curl parameters a little bit to include a timeout

[spikehome]

Im really new to this Linux and rasberry, but how do i install this script?

I have lot of problems with Domoticz freezing, so i guess this script would do the trick.

I had the problem also.
Installed new and restored the db.
Now it is working fine for a week (normaly in a few days web and ssh not accessible).

[philchillbill]

The script works by checking the text that results from running the command: sudo service domoticz.sh status
The rpi version of Linux replies with a slightly different text that e.g. Ubuntu: 'domoticz is running' vs 'active (running)'.
If the version of the script you are using is checking for the wrong text it will never find it. Please look carefully at the earlier examples above and watch out for these differences I just mentioned.

[hansrune]

I use another approach, i.e a healthcheck script that runs from cron to check on port listeners, network connectivity and more.
Reboots on some conditions, restarts Domoticz if no listener for that network port. I chose to not restart services if someone is logged in to a shell, assuming that I me doing some maintenance.

You can pick this up, or perhaps use some ideas from https://github.com/hansrune/domoticz-co ... lthchkdomo

Instruction in the beginning....

[K3rryBlue]

Made a small change to this script. As the status response changed:

Code: Select all

#!/bin/bash
  DomoticzState=`sudo service domoticz.sh status`
   if [[ $DomoticzState == *"active (running)"* ]]
          then
                  echo 'Domoticz is running. Nothing to do.'
  elif [[ $DomoticzState == *"inactive (dead)"* ]]
          then
                  echo 'Domoticz is not running. Restarting Domoticz...'
                  sudo service domoticz.sh restart
                  echo 'Domoticz restarted.'
  fi

[Egregius]

I believe it's better to query the json API to check that domoticz is online.
Because:
a) A service might be running but hanging and thus give a false response
b) A port might be listening but the service behind it hangs, again false response.

[oohlaf]

If it's just to check when domoticz has crashed (ie exited) and if your system uses systemd, then use the following:
(change the execstart parameters to your own usage)

Code: Select all

[Unit]
Description=Domoticz Home Automation
After=network.target

[Service]
Type=forking
User=pi
Group=pi
WorkingDirectory=/home/pi/domoticz
PIDFile=/var/run/domoticz/domoticz.pid
ExecStart=/home/pi/domoticz/domoticz -daemon -pidfile /var/run/domoticz/domoticz.pid -www 8080 -sslwww 0 -log /var/log/domoticz/domoticz.log
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process
Restart=on-failure
RestartSec=10

[Install]
WantedBy=multi-user.target
Alias=domoticz.sh.service

[K3rryBlue]

Yes, there are indeed better, or multiple, ways but so far the simple script does what it needs to do.
However i must admit, that lately, the pi runs very stable, by using berryboot and run everything from a USB thumb. teh sd-card is only used to boot the rPi. So far Domoticz is stable for 2 weeks, no "database malfunctions" or crashes.

Cause the rPi runs stable now, it revealed a new problem, with OpenZWave + RazBerry2. Need to figure a way to detect that ZWave is not responding anymore, probably via a JSON call. IF no response THEN reboot rPi.

[uc530]

Hello!
I am new user of raspberry and domoticz and I am asking you for some help.
I have no success with the script to make it run. I made a file with name domoticz_state_checker.sh with:

Code: Select all

#!/bin/bash
while true
do

DomoticzState=`sudo service domoticz status`

if [ $DomoticzState == "active (running)" ]
        then
                echo 'Domoticz is running. Nothing to do.'
elif [ $DomoticzState == "inactive (dead)" ]
        then
                echo 'Domoticz is not running. Restarting Domoticz...'
                sudo service domoticz restart
                echo 'Domoticz restarted.'
         fi

sleep 15
done

But I have all possible errors listed when I try to run it:

Code: Select all

sudo su pi /home/pi/domoticz/scripts/domoticz_state_checker.sh
/home/pi/domoticz/scripts/domoticz_state_checker.sh: line 10: syntax error near unexpected token `elif'
'home/pi/domoticz/scripts/domoticz_state_checker.sh: line 10: `elif [ $DomoticzState == "inactive (dead)" ]

If I change elif with elseif, then I have:

Code: Select all

sudo su pi /home/pi/domoticz/scripts/domoticz_state_checker.sh
/home/pi/domoticz/scripts/domoticz_state_checker.sh: line 18: syntax error near unexpected token `done'
/home/pi/domoticz/scripts/domoticz_state_checker.sh: line 18: `done'

Can anyone please write it from the beginning, how to make this script to work properly. Where to put the files, how to write the code correctly...
I run raspbyan jessie on RPI ver.1.

Thanks in advance!
Ps:Sorry for my english.

[K3rryBlue]

You ran a bit short on [ and ]
Please use this:

Code: Select all

#!/bin/bash
while true
do

DomoticzState=`sudo service domoticz status`

if [[ $DomoticzState == *"active (running)"* ]]
        then
                echo 'Domoticz is running. Nothing to do.'
elif [[ $DomoticzState == *"inactive (dead)"* ]]
        then
                echo 'Domoticz is not running. Restarting Domoticz...'
                sudo service domoticz restart
                echo 'Domoticz restarted.'
         fi

sleep 15
done

To check this every 15 seconds might be an overkill.......

[uc530]

Hi!
Thanks for the answer.

I tryed that alredy with the code you posted few days ago, but i`ve got errors:

Code: Select all

pi@raspberrypi:~ $ sudo su pi /home/pi/domoticz/scripts/domoticz_state_checker.sh
/home/pi/domoticz/scripts/domoticz_state_checker.sh: line 7: syntax error in conditional expression
'home/pi/domoticz/scripts/domoticz_state_checker.sh: line 7: syntax error near `]]
/home/pi/domoticz/scripts/domoticz_state_checker.sh: line 7: `if [[ $DomoticzState == *"active (runn'ng)"* ]]

About the 15 seconds.... I`ll change that with longer period.

[K3rryBlue]

I think you are creating your files in windows and copy them to the rPi.

• Please copy the code below to your script file. I use as example "domoticz_status_check.sh"

  Code: Select all

  #!/bin/bash
  while true
  do
  
  DomoticzState=`sudo service domoticz.sh status`
  
  if [[ $DomoticzState == *"active (running)"* ]]
          then
                  echo 'Domoticz is running. Nothing to do.'
  elif [[ $DomoticzState == *"inactive (dead)"* ]]
          then
                  echo 'Domoticz is not running. Restarting Domoticz...'
                  sudo service domoticz.sh restart
                  echo 'Domoticz restarted.'
  fi
  
  sleep 15
  done
  

• Save the file and run the following commands via putty"

  Code: Select all

  sudo chmod 755 domoticz_status_check.sh

• Remove the horror from windows

  Code: Select all

  sed -i -e 's/\r$//' domoticz_status_check.sh

• Execute the script

  Code: Select all

  sudo ./domoticz_status_check.sh

The script should run now

[uc530]

Thank you very much! It works!
Another one thing please... Procedure how to make the script to run after rpi reboot.
Thanks again! I owe you a big beer!

[K3rryBlue]

Google is your friend

[uc530]

Hi!
Script without loop and crontab command works like charm.
Thanks again for help.
script and added all rights:

Code: Select all

#!/bin/bash

DomoticzState=`sudo service domoticz.sh status`

if [[ $DomoticzState == *"active (running)"* ]]
        then
                echo 'Domoticz is running. Nothing to do.'
elif [[ $DomoticzState == *"inactive (dead)"* ]]
        then
                echo 'Domoticz is not running. Restarting Domoticz...'
                sudo service domoticz.sh restart
                echo 'Domoticz restarted.'
fi

crontab edit:

Code: Select all

crontab -e
*/1 * * * * /home/pi/domoticz/scripts/domoticz_state_checker.sh

With best regards UC530

[K3rryBlue]

Thanks for your feedback. To make it even more complete you could add a simple log to your script, so you know when something happened.
If Domoticz need to restart it will write a datetime stamp to a file.

Code: Select all

#!/bin/bash
  CONFIG=/home/pi/domoticz/scripts/domoticz_state_checker.txt
  dt=$(date '+%d/%m/%Y %H:%M:%S')
  DomoticzState=`sudo service domoticz.sh status`
   if [[ $DomoticzState == *"active (running)"* ]]
          then
				  echo "Domoticz is running. Nothing to do."
  elif [[ $DomoticzState == *"inactive (dead)"* ]]
          then
		  echo "$dt, Domoticz is not running. Restarting Domoticz..." >> "$CONFIG"
                  sudo service domoticz.sh restart
                  echo "$dt, Domoticz restarted..." >> "$CONFIG"
  fi

[jannl]

I get a pushover notification when domoticz is restarted. I only check is json is respondig. With the status check you propably won't detect if domoticz hangs.

[havnegata]

I get a pushover notification when domoticz is restarted. I only check is json is respondig. With the status check you propably won't detect if domoticz hangs.

This is what I would like as well Do you care to describe a bit closer how you achieve this?