Node lifespan

[rafra...@gmail.com]

Hello my nodes have lifespan of 1000 hours after this i have to change the node.
Currently i think it's easy to make alert when node is up 1000 hours but that's not the case.
Because nodes can be restarted and in this way the lifetime would be set to 0.

So i need some counter which is aggregating node lifetime even if its restarted or turned off from time tot ime.
Can some one help me with achieving a solution for this ?
Or when can i look for answers if it's not a right place ?

[Ben Kochie]

Just like `node_boot_time_seconds` can be used for uptime, you could use the textfile exporter to create a metric like `node_created_time_seconds` that is written once as part of the provisioning process.

Then you can use `time() - node_created_time_seconds` to find out the lifespan of the node.

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[rafra...@gmail.com]

But you know what if node will be down for lets say one week so your solutions is substracting 168 hours from lifespan