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Move node pinging to its own goroutine

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This moves the job of pinging the node provider into its own
goroutine. If it takes a long time, it shouldn't slow down
leases, and vice-versa.

It also adds timeouts for node pings. One of the problems
is that we don't know how long a node ping will take --
there could be a bunch of network calls underneath us.

The point of the lease is to say whether or not the
Kubelet is unreachable, not whether or not the node
pings are "passing".

Signed-off-by: Sargun Dhillon <sargun@sargun.me>
This commit is contained in:
Sargun Dhillon
2020-07-27 20:59:10 -07:00
parent 49c596c5ca
commit d390dfce43
4 changed files with 208 additions and 6 deletions
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go.mod
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@@ -19,6 +19,7 @@ require (
github.com/spf13/cobra v0.0.5
github.com/spf13/pflag v1.0.5
go.opencensus.io v0.21.0
golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e
golang.org/x/sys v0.0.0-20191022100944-742c48ecaeb7
gotest.tools v2.2.0+incompatible
k8s.io/api v0.18.4