talos/pkg/provision/providers/vm/loadbalancer.go
Andrey Smirnov 96aa9638f7
chore: rename talos-systems/talos to siderolabs/talos
There's a cyclic dependency on siderolink library which imports talos
machinery back. We will fix that after we get talos pushed under a new
name.

Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
2022-11-03 16:50:32 +04:00

73 lines
1.8 KiB
Go

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package vm
import (
"fmt"
"os"
"os/exec"
"strconv"
"strings"
"syscall"
"github.com/siderolabs/gen/slices"
"github.com/siderolabs/talos/pkg/provision"
)
const (
lbPid = "lb.pid"
lbLog = "lb.log"
)
// CreateLoadBalancer creates load balancer.
func (p *Provisioner) CreateLoadBalancer(state *State, clusterReq provision.ClusterRequest) error {
pidPath := state.GetRelativePath(lbPid)
logFile, err := os.OpenFile(state.GetRelativePath(lbLog), os.O_APPEND|os.O_CREATE|os.O_RDWR, 0o666)
if err != nil {
return err
}
defer logFile.Close() //nolint:errcheck
controlPlaneIPs := slices.Map(clusterReq.Nodes.ControlPlaneNodes(), func(req provision.NodeRequest) string { return req.IPs[0].String() })
ports := slices.Map(clusterReq.Network.LoadBalancerPorts, strconv.Itoa)
args := []string{
"loadbalancer-launch",
"--loadbalancer-addr", clusterReq.Network.GatewayAddrs[0].String(),
"--loadbalancer-upstreams", strings.Join(controlPlaneIPs, ","),
}
if len(ports) > 0 {
args = append(args, "--loadbalancer-ports", strings.Join(ports, ","))
}
cmd := exec.Command(clusterReq.SelfExecutable, args...)
cmd.Stdout = logFile
cmd.Stderr = logFile
cmd.SysProcAttr = &syscall.SysProcAttr{
Setsid: true, // daemonize
}
if err = cmd.Start(); err != nil {
return err
}
if err = os.WriteFile(pidPath, []byte(strconv.Itoa(cmd.Process.Pid)), os.ModePerm); err != nil {
return fmt.Errorf("error writing LB PID file: %w", err)
}
return nil
}
// DestroyLoadBalancer destoys load balancer.
func (p *Provisioner) DestroyLoadBalancer(state *State) error {
pidPath := state.GetRelativePath(lbPid)
return stopProcessByPidfile(pidPath)
}