[SOLVED] Determining node status in shell

[b.miller]

Other than checking ping, is there a another more reliable method using Prox API to determine if a specific node is alive or dead?

I was hoping that pvecm had an option to poll specific nodes with pvecm status, but it only provides the overview. I am writing an if-fi that will determine which node the script will execute dependent on the status of the other nodes to avoid executing the same commands multiple times. I can do this with ping, but thought there must be another method that's Prox native.

 

[dcsapak]

you can use the 'pvesh' cli for example, namely you can use any api path there,
if you have a cluster you can get the status for all with:

pvesh get /cluster/status

 

[b.miller]

you can use the 'pvesh' cli for example, namely you can use any api path there,
if you have a cluster you can get the status for all with:

pvesh get /cluster/status

Thanks Dominik

Would you know of another method of pulling the 1/0 values from the API? I can do it with this bit of code -
pvesh get /cluster/status --human-readable --noborder | awk '(NR!=1)'| awk '{printf " %s\n", $7}'|sort

but I'd prefer a one-liner that will echo 1 or 0 of an individual node when the online boolean is queried. I am in the API-Viewer now and the online boolean isn't a listed option under pvesh get /nodes/{node}/status

 

[dcsapak]

if a node is not online, you'll not be able to reach it via /nodes/{node}/status since that request is proxied to the target node
which would make the request (an expensive) ping

but you can use some json tooling(e.g. jq) for pvesh like this:

pvesh get /cluster/status --output-format json | jq '.[] | select(.name == "NODENAME") | .online'