# Functions
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GetOSInstanceType is exported for usage in nodegroup package as well.
GetQueryWrappers returns the query wrappers that are relevant for the current environment.
HasNodeExporter returns true if node exporter metrics are present for any cluster.
Metrics a global func for collecting node level metrics in prometheus.
# Constants
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"node" label is absent, "instance" label has a different format and assumed to be node name.
"node" label is absent, "instance" label has a format of IP address:port.
"node" label is present and has the node name.
# Structs
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