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76c2038b13
This PR contains generic simple TCP loadbalancer code, and glue code for firecracker provisioner to use this loadbalancer. K8s control plane is passed through the load balancer, and Talos API is passed only to the init node (for now, as some APIs, including kubeconfig, don't work with non-init node). Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
61 lines
1.9 KiB
Go
61 lines
1.9 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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// Package firecracker implements Provisioner via Firecracker VMs.
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package firecracker
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import (
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"context"
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"github.com/talos-systems/talos/internal/pkg/provision"
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"github.com/talos-systems/talos/pkg/config/machine"
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"github.com/talos-systems/talos/pkg/config/types/v1alpha1"
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"github.com/talos-systems/talos/pkg/config/types/v1alpha1/generate"
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)
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const stateFileName = "state.yaml"
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type provisioner struct {
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}
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// NewProvisioner initializes docker provisioner.
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func NewProvisioner(ctx context.Context) (provision.Provisioner, error) {
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p := &provisioner{}
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return p, nil
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}
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// Close and release resources.
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func (p *provisioner) Close() error {
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return nil
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}
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// GenOptions provides a list of additional config generate options.
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func (p *provisioner) GenOptions(networkReq provision.NetworkRequest) []generate.GenOption {
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nameservers := make([]string, len(networkReq.Nameservers))
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for i := range nameservers {
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nameservers[i] = networkReq.Nameservers[i].String()
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}
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return []generate.GenOption{
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generate.WithInstallDisk("/dev/vda"),
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generate.WithNetworkConfig(&v1alpha1.NetworkConfig{
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NameServers: nameservers,
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NetworkInterfaces: []machine.Device{
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{
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Interface: "eth0",
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CIDR: "169.254.128.128/32", // link-local IP just to trigger the static networkd config
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MTU: networkReq.MTU,
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},
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},
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}),
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}
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}
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// GetLoadBalancers returns internal/external loadbalancer endpoints.
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func (p *provisioner) GetLoadBalancers(networkReq provision.NetworkRequest) (internalEndpoint, externalEndpoint string) {
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// firecracker runs loadbalancer on the bridge, which is good for both internal & external access
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return networkReq.GatewayAddr.String(), networkReq.GatewayAddr.String()
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}
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