Monitoring Linux systems using SSH

I agree we need a non-SNMP method to monitor Linux, even if that entails deploying a collector on each server.  Leveraging other tools like collectd would also be nice options.  We have run into various environments where SNMP (even SNMPv3) is verboten due to perceived security concerns.  Even if allowed, manually configuring SNMP on many servers to enable basic data collection seems like a bad plan.

I would very much like to see this as well. If ssh based monitoring is to be supported it should support ssh keys as well as passwords.

Are ssh keys supported yet?  Better yet would be the ability to fetch an ssh key, by name, from a key management service such as those offered by AWS and others.  I don't want to have to encode passwords into the logicmonitor interface, and I certainly don't want to have to leave a private key with access to all my production resources on my collector, but my collector runs on an ec2 instance that has an instance role assigned to it, so it would be trivial to give that role a policy which allows it to fetch a key by name.  If the basic ssh functionality included in scripts were to include the ability to look up an ssh key, or could receive the output of a different data source (I could write a script to fetch the key easily enough), that would be ideal, since modifying every data source to use a different script would be a drag.  This would give me the ability to use key-based authentication for ssh while still allowing me to do key management without having to update filesystems and logicmonitor properties.  I could simply rotate in a fresh key in the key management service and everything would continue to function normally.

Could be done now using the Expect library (as is used by Config modules).

I would still like SNMP as well, not to replace it.  As we have black box Linux appliances too.

There is now a collection of SSH based datasources for monitoring Linux: 

Linux_CPU_Cores, Linux_Block_DevicePerformance, Linux_Memory_Usage, Linux_Host_Uptime, Linux_Filesystem_Usage, Linux_CPU_Load, Linux_Network_TCPUDP, Linux_Network_Interfaces

They work in tandem with the Linux_Monitoring_SSH PropertySource.

These can all be added via the LogicMonitor DataSource Repository. 

Hi @Jake Cohen

I can't see the SSH Linux_FIlesystem_Usage datasource in the repository?

Hey @Mosh - You can find it with locator code: CGWHNZ

FYI for those tracking here - I believe we are currently working on updated versions of these that will provide the ability to use SSH keys for authentication. Stay tuned ... !

Thanks @Jake Cohen

On 6/27/2018 at 1:14 AM, Jake Cohen said:

Hey @Mosh - You can find it with locator code: CGWHNZ

I can't find any of these except the one you gave the code for.

Does anyone have the codes for the other linux SSH datasources?