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ar/bridge_networking: ensure cni configuration is loaded #7643

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merged 4 commits into from
Apr 7, 2020
Merged

ar/bridge_networking: ensure cni configuration is loaded #7643

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f68b85b
ar/bridge: ensure cni configuration is always loaded
nickethier Apr 7, 2020
b078d78
ar/bridge: better cni status err handling
nickethier Apr 7, 2020
18de6c4
ar/bridge: use cni.IsCNINotInitialized helper
nickethier Apr 7, 2020
dd7d16a
docs: add #7643 to changelog
schmichael Apr 7, 2020
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14 changes: 13 additions & 1 deletion client/allocrunner/networking_bridge_linux.go
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Original file line number Diff line number Diff line change
Expand Up @@ -148,7 +148,7 @@ func (b *bridgeNetworkConfigurator) Setup(ctx context.Context, alloc *structs.Al
return fmt.Errorf("failed to initialize table forwarding rules: %v", err)
}

if err := b.cni.Load(cni.WithConfListBytes(b.buildNomadNetConfig())); err != nil {
if err := b.ensureCNIInitialized(); err != nil {
return err
}

Expand Down Expand Up @@ -176,9 +176,21 @@ func (b *bridgeNetworkConfigurator) Setup(ctx context.Context, alloc *structs.Al

// Teardown calls the CNI plugins with the delete action
func (b *bridgeNetworkConfigurator) Teardown(ctx context.Context, alloc *structs.Allocation, spec *drivers.NetworkIsolationSpec) error {
if err := b.ensureCNIInitialized(); err != nil {
return err
}

return b.cni.Remove(ctx, alloc.ID, spec.Path, cni.WithCapabilityPortMap(getPortMapping(alloc)))
}

func (b *bridgeNetworkConfigurator) ensureCNIInitialized() error {
if err := b.cni.Status(); cni.IsCNINotInitialized(err) {
return b.cni.Load(cni.WithConfListBytes(b.buildNomadNetConfig()))
} else {
return err
}
}

// getPortMapping builds a list of portMapping structs that are used as the
// portmapping capability arguments for the portmap CNI plugin
func getPortMapping(alloc *structs.Allocation) []cni.PortMapping {
Expand Down