derp: increase update frequency and harden on failures #2741
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This commit changes the example config and default time for how often we refresh the DERP map. If not changed, this is typically Tailscales official map. Signed-off-by: Kristoffer Dalby <[email protected]>
nblock
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Aug 21, 2025
mikeodr
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hscontrol/derp/derp.go
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| return derpMap | ||
| rand.Shuffle(len(region.Nodes), func(i, j int) { |
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Is there a way to make this deterministic per Tailnet?
This helps spread the load across nodes in a DERP region.
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Now it will try to use the base_domain as a seed so it should be relatively stable per headscale.
This commits makes updating of the DERP map from file and url more robust by retrying with exponential backoff if it fails and upon failure, keep the old DERP map if we cannot successfully build a new one. Fixes juanfont#2694 Signed-off-by: Kristoffer Dalby <[email protected]>
Signed-off-by: Kristoffer Dalby <[email protected]>
Signed-off-by: Kristoffer Dalby <[email protected]>
Avoid that all headscale clients picks the same first node in a region. Signed-off-by: Kristoffer Dalby <[email protected]>
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mikeodr
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This commit changes the example config and default time for
how often we refresh the DERP map. If not changed, this
is typically Tailscales official map.
Second commit makes updating of the DERP map from file and url
more robust by retrying with exponential backoff if it fails
and upon failure, keep the old DERP map if we cannot successfully
build a new one.