[client] Restore residual state in foreground mode before login (#6707)

* Improved residual state restoration during foreground startup and
foreground login, ensuring consistent recovery with stale states.
* Foreground flows now initialize advanced routing so stale routes 
are bypassed during login.
This commit is contained in:
David Fry
2026-07-14 16:43:59 +01:00
committed by GitHub
parent a48618c074
commit e70a69bbcf
4 changed files with 36 additions and 6 deletions

View File

@@ -17,7 +17,9 @@ import (
"github.com/netbirdio/netbird/client/internal"
"github.com/netbirdio/netbird/client/internal/auth"
"github.com/netbirdio/netbird/client/internal/profilemanager"
nbnet "github.com/netbirdio/netbird/client/net"
"github.com/netbirdio/netbird/client/proto"
"github.com/netbirdio/netbird/client/server"
"github.com/netbirdio/netbird/client/system"
"github.com/netbirdio/netbird/util"
)
@@ -331,6 +333,14 @@ func doForegroundLogin(ctx context.Context, cmd *cobra.Command, setupKey string,
return fmt.Errorf("read config file %s: %v", configFilePath, err)
}
// Mirror runInForegroundMode: recover residual state (DNS, firewall,
// ssh config, legacy routing) from a previous unclean shutdown and
// enable advanced routing before dialing management.
if err := server.RestoreResidualState(ctx, profilemanager.NewServiceManager(configFilePath).GetStatePath()); err != nil {
log.Warnf("failed to restore residual state: %v", err)
}
nbnet.Init()
err = foregroundLogin(ctx, cmd, config, setupKey, activeProf.ID)
if err != nil {
return fmt.Errorf("foreground login failed: %v", err)

View File

@@ -22,6 +22,8 @@ import (
"github.com/netbirdio/netbird/client/internal/peer"
"github.com/netbirdio/netbird/client/internal/profilemanager"
"github.com/netbirdio/netbird/client/proto"
nbnet "github.com/netbirdio/netbird/client/net"
"github.com/netbirdio/netbird/client/server"
"github.com/netbirdio/netbird/client/system"
"github.com/netbirdio/netbird/shared/management/domain"
"github.com/netbirdio/netbird/util"
@@ -229,6 +231,24 @@ func runInForegroundMode(ctx context.Context, cmd *cobra.Command, activeProf *pr
_, _ = profilemanager.UpdateOldManagementURL(ctx, config, configFilePath)
// Restore residual state left by a previous run that did not shut down
// cleanly, mirroring what the daemon does before connecting: it recovers
// DNS config (a stale resolv.conf takeover can make the management
// hostname unresolvable), firewall rules, ssh config and legacy routing.
// Route cleanup itself happens at engine start; nbnet.Init() below lets
// the management dial bypass a leftover fwmark rule until then.
// Foreground mode is particularly exposed in containers: a crashed
// container restarts inside the same (pod) network namespace, so stale
// state survives while the process does not.
if err := server.RestoreResidualState(ctx, profilemanager.NewServiceManager(configPath).GetStatePath()); err != nil {
log.Warnf("failed to restore residual state: %v", err)
}
// Enable advanced routing (as the daemon does on startup) so the
// management dial bypasses a leftover fwmark rule instead of being
// shunted into a stale routing table.
nbnet.Init()
err = foregroundLogin(ctx, cmd, config, providedSetupKey, activeProf.ID)
if err != nil {
return fmt.Errorf("foreground login failed: %v", err)

View File

@@ -181,7 +181,7 @@ func (s *Server) Start() error {
log.Warnf("failed to redirect stderr: %v", err)
}
if err := restoreResidualState(s.rootCtx, s.profileManager.GetStatePath()); err != nil {
if err := RestoreResidualState(s.rootCtx, s.profileManager.GetStatePath()); err != nil {
log.Warnf(errRestoreResidualState, err)
}
@@ -551,7 +551,7 @@ func (s *Server) Login(callerCtx context.Context, msg *proto.LoginRequest) (*pro
s.actCancel = cancel
s.mutex.Unlock()
if err := restoreResidualState(s.rootCtx, s.profileManager.GetStatePath()); err != nil {
if err := RestoreResidualState(s.rootCtx, s.profileManager.GetStatePath()); err != nil {
log.Warnf(errRestoreResidualState, err)
}
@@ -858,7 +858,7 @@ func (s *Server) Up(callerCtx context.Context, msg *proto.UpRequest) (*proto.UpR
return s.waitForUp(callerCtx)
}
if err := restoreResidualState(callerCtx, s.profileManager.GetStatePath()); err != nil {
if err := RestoreResidualState(callerCtx, s.profileManager.GetStatePath()); err != nil {
log.Warnf(errRestoreResidualState, err)
}

View File

@@ -46,7 +46,7 @@ func (s *Server) CleanState(ctx context.Context, req *proto.CleanStateRequest) (
if req.All {
// Reuse existing cleanup logic for all states
if err := restoreResidualState(ctx, statePath); err != nil {
if err := RestoreResidualState(ctx, statePath); err != nil {
return nil, status.Errorf(codes.Internal, "failed to clean all states: %v", err)
}
@@ -113,9 +113,9 @@ func (s *Server) DeleteState(ctx context.Context, req *proto.DeleteStateRequest)
}, nil
}
// restoreResidualState checks if the client was not shut down in a clean way and restores residual if required.
// RestoreResidualState checks if the client was not shut down in a clean way and restores residual if required.
// Otherwise, we might not be able to connect to the management server to retrieve new config.
func restoreResidualState(ctx context.Context, statePath string) error {
func RestoreResidualState(ctx context.Context, statePath string) error {
if statePath == "" {
return nil
}