OID monitoring - SNMP

Hello Alistair,

Thank you for your answer.

In fact, following the Microsoft's documentation : https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-set-up-snmp-mib-monitoring

I cannot see anything regarding the uptime.
I already tested your solution but without any success. The uptime with this OID isn't implemented on the device side so it returns that the value does not exist.

I'm trying to turn myself to another solution now. Monitoring the service status, but, once more, I'm facing a wall.

My SNMP user is not allowed and I have a new error message.
"sudo: no tty present and no askpass program specified"

I'm no Linux Guru so, it is kind of difficult to find a great solution.

Any idea(s) ? :D

Thanks !

Hello @Guillaume Dumont my apologies for the inconvenience this issue is causing you. May I know the outcome when you tried to use the OID 1.3.6.1.2.1.1.3. The documentation states that non-existing keys respond with null, and HTTP 200 response.

The error "sudo: no tty present and no askpass program specified" will occur when the sudo command is trying to execute a command that requires a password but sudo does not have access to terminal to prompt the user for a passphrase. To resolve this, we can grant the user permissions to use the command without prompting for password.

Do the following to achieve this:

1. Open the shell and type the following sudo visudo
2. Then edit that file to add to the very end:

   username ALL = NOPASSWD: /fullpath/to/command

For example, the command john ALL = NOPASSWD: /sbin/poweroff will allow user john to sudo poweroff without prompting for password.

Please let us know if the above shared information is useful. Please do not hesitate to reach out to us if you need any additional assistance on this.

Hello,

Thank you for your answer.

Return of the snmpwalk gives this :
####################################################

sudo snmpwalk -v2c 10.195.16.150 -c ########### 1.3.6.1.2.1.1.3

SNMPv2-MIB::sysUpTime = No Such Object available on this agent at this OID

####################################################

But in your documentation it clearly says that it returns a correct value.

In fact I know that the sudo no tty error can be fixed like this but what is the exact place of the command I need ?

my need is to retrieve the service status via my snmp user.

Could you please make an example with the FULL path of the command to retrieve the service status?

I searched on the Internet but impossible to find any documentation on it.

Regards

Guillaume

Hi @Guillaume Dumont Thank you for your response. DO you happen to know the service name you are trying to monitor status for? If you have this information, there are other ways in Linux through which we can get the service uptime.

Here is an example sudo systemctl status <service_name> This command will show the uptime for the service in the format "Active: active (running) since X".

If you are unsure of the service name, you can look up the active services on the machine using the following command systemctl type=service --state=running Once you have the service name figured out, you can then run the above command to get the status.

Please let us know if this helps.

Regards,

Leela Rajesh.

Hello,

That is the "servicestatus" in the OID list here below that I want to monitor and for which I have a no tty.
https://learn.microsoft.com/en-us/azure/defender-for-iot/organizations/how-to-set-up-snmp-mib-monitoring

Not a specific service.

Regards

Guillaume