Check if pimatic is running with shell
Hello,
i have 2 Raspberrys each is running with pimatic. One for the global home automation, the other only to control my heating. Now I want to check from the first raspberry if pimatic is running on the other so in case of a crash i can make an action!
I have handle a bit with skripts and the shell plugin but i don´t find the right solution.
Perhaps one of you can help me!
Thank you
I use
ssh pi@raspberrypi “ps -eaf | grep pimatic”
if pimatic is running, there is a line similar to
root 5778 1 9 14:27 ? 00:00:20 /usr/local/bin/node /usr/local/bin/pimatic.js start
Yes you could use a smal shellscript on the first pi to check if the other one is running.
#!/bin/bash
username=xxxxxx
hostname=xxx.xxx.xxx.xxx(IP)
password=xxxxxxxxx
sshpass -p $password ssh -o StrictHostKeyChecking=no $username@$hostname [command]
–> here a shellsensor with come cut of the result of your
so the shellsensor could have the following command:
/path/to/shellscript/ | cut -d -f10
here he only searches the 10th part of you output (start)
this you use in your rules then…
(if shellsensordevice != start then do …)
mfg
Chris
@chris said in Check if pimatic is running with shell:
Yes you could use a smal shellscript on the first pi to check if the other one is running.
#!/bin/bash username=xxxxxx hostname=xxx.xxx.xxx.xxx(IP) password=xxxxxxxxx sshpass -p $password ssh -o StrictHostKeyChecking=no $username@$hostname [command]
- use the command without the brackets[]
OK, i make a skript named pimatic-uptime.sh and copy yours inside with the username and password of my pimatic. At the hostname i write my ip and :8083 for the Port i use. delete the brakes. Was that ok so?
–> here a shellsensor with come cut of the result of your
so the shellsensor could have the following command:
/path/to/shellscript/ | cut -d -f10here he only searches the 10th part of you output (start)
this you use in your rules then…
OK, here begins my problem… I create a ShellSensor for the first time… I take the command you wrote above in the command-line of the sensor (of course with my path of the pimatic-uptime.sh) but what must i do with the attributeName?
If I don´t fill it out i get a Error : Cannot read property ‘toUpperCase’ of undefined
And when I fill it for example with a word i get this Error:
error [pimatic-shell-execute]: [ShellSensor#status-homatic] Error: Command failed: /bin/sh -c /home/pi/pimatic-uptime.sh | cut -d -f10
/bin/sh: 1: /home/pi/pimatic-uptime.sh: Permission denied
cut: Trenner muss ein einzelnes Zeichen sein
„cut --help“ liefert weitere Informationen.
Sorry but i´m a noob with Shell…
(if shellsensordevice != start then do …)
OK, this would be no Problem if I come to this Point… 
Ok here is a screenshot of mine shell sensor…
the attribute name is temperature, because in my case i get the temperature of my nas.
so here you could us state or something like that…(because if it’s running the state is start)
so the other error is because i didn’t know the really sign for a space… mom i will look.
Mit freundlichen Grüßen
Chris
edit:
ah have a look into my pic:
so here you shell sensor should look like:
/path/to/shellscript/ | cut -d" " -f10
OK, now i get this error…
error [pimatic-shell-execute]: [ShellSensor#status-homatic] Error: Error getting attribute value for Status Homatic: /bin/sh: 1: /home/pi/pimatic-uptime.sh: Permission denied
Sorry…
Thank you
did you use as userand password the credentials of your ssh-login into the second pi?
Yes, i do.
i must write all of my credentials as i log in over ssh isn´t that right?
Also with the port i use!?!
do you log into ssh-port 8083?
or is this your pimaticport?
No, SSh via port 60.
But i check it with the port 8083 because i get this error.
8083 is the port for the frontend.
Now i write it in the script like 192.168.178.3:60
I also log in at the standard username and password for SSh Raspberry
Hello,
so, i must install sshpass… after i do that i have another error…
error [pimatic-shell-execute]: [ShellSensor#status-homatic] Error: Error getting attribute value for Status Homatic: ssh: Could not resolve hostname 192.168.xxx.xx:xx: Name or service not known
I have check the IP and Port and it is right.
Knows anybody this error?
Thank you
Have you enabled ssh on the destination Pi?
Why not using the pimatic api?
Hi,
yes, ssh is enabeld. Over my PC i connect via SSH (Putty) to both pi´s.
I also have install sshpass on both pi´s.
i corrected the skript because the error was the other port that i use.
after the hostname it must be a -p (port).
Now I have no error but the ShellSensor in Pimatic has only a empty entry all the time…
and i don´t know why!?!
@Heizelmann said in Check if pimatic is running with shell:
Why not using the pimatic api?
because i don´t know how!
I use the get command on my pis to push temperature values from one to the other pi.
I have try to get it to work with the REST API but with no success. Because in this case i have to call up if the programm is running or am i wrong?
ok, i have work a little bit with the API and i think i have a half success.
whenn i execute the command:
curl -X GET --user “user:password” http://xxx.xxx.xxx.xx:xx/api/variables/status-pimatic
i get the output:
{“variable”:{“name”:“status-pimatic”,“readonly”:false,“type”:“value”,“value”:“Online”,“unit”:""},“success”:true}
I created a variable in my pimatic with the value: Online and so far it works when i execute this at SSH (Putty).
But in what way can i bring it into my second pimatic in a variable or a VariableDevice???
Thank You
P.S. and sorry for my bad english
so here you also could use a shell sensor and cut the output of the json to true or success…
so your command for the pi1 has to look like this:
curl --silent http://user:password@host:port/api/variables/status-pimatic | cut -d":" -f8 | sed 's/.$//'
the result is when pi2 is online
true
when pi2 is offline
unknown
i think…not sure because i don’t have another pi to test
Shortly I can not give any code, but I thought off periodically sending an API PATCH request from one PI to the other by rule ‘when every 5 seconds then …’ and check the change on the other pi also by rule ‘when variable-x was not updated for 10 seconds then …’ or so.
Thank you @Heizelmann but it works like chris said:
@chris said in Check if pimatic is running with shell:
so here you also could use a shell sensor and cut the output of the json to true or success…
so your command for the pi1 has to look like this:
curl --silent http://user:password@host:port/api/variables/status-pimatic | cut -d":" -f8 | sed 's/.$//'the result is when pi2 is online
truewhen pi2 is offline
unknown
i think…not sure because i don’t have another pi to test
Summary:
I make a variable on each pi and create a shell-sensor with the command chris has written.
For the GUI I make a second variable like $pimatic-status-heizung and two rules like:
when Status of Pimatic-Heizung-Online? = “true” then set $status-pimatic-heizung = "Online"
and at least i create a VariablesDevice to read the variable.
And now it works!
Thank You
Nice @Masterplayer .
Yes sorry i was a littel busy last days…
Because of my semester examinations…
But nice that it’s working now…