func TestForceRenewTLSConfig(t *testing.T) {
t.Parallel()
tc := testutils.NewTestCA(t)
defer tc.Stop()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Get a new managerConfig with a TLS cert that has 15 minutes to live
nodeConfig, err := tc.WriteNewNodeConfig(ca.ManagerRole)
assert.NoError(t, err)
renew := make(chan struct{}, 1)
updates := ca.RenewTLSConfig(ctx, nodeConfig, tc.Remotes, renew)
renew <- struct{}{}
select {
case <-time.After(10 * time.Second):
assert.Fail(t, "TestForceRenewTLSConfig timed-out")
case certUpdate := <-updates:
assert.NoError(t, certUpdate.Err)
assert.NotNil(t, certUpdate)
assert.Equal(t, certUpdate.Role, ca.ManagerRole)
}
}
func TestForceRenewTLSConfig(t *testing.T) {
tc := testutils.NewTestCA(t)
defer tc.Stop()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Get a new managerConfig with a TLS cert that has 15 minutes to live
nodeConfig, err := tc.WriteNewNodeConfig(ca.ManagerRole)
assert.NoError(t, err)
var success, timeout bool
renew := make(chan struct{}, 1)
updates := ca.RenewTLSConfig(ctx, nodeConfig, tc.TempDir, tc.Picker, renew)
for {
renew <- struct{}{}
select {
case <-time.After(2 * time.Second):
timeout = true
case certUpdate := <-updates:
assert.NoError(t, certUpdate.Err)
assert.NotNil(t, certUpdate)
assert.Equal(t, certUpdate.Role, ca.ManagerRole)
success = true
}
if timeout {
assert.Fail(t, "TestForceRenewTLSConfig timed-out")
break
}
if success {
break
}
}
}
func TestRenewTLSConfigWithNoNode(t *testing.T) {
t.Parallel()
tc := testutils.NewTestCA(t)
defer tc.Stop()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Get a new nodeConfig with a TLS cert that has the default Cert duration
nodeConfig, err := tc.WriteNewNodeConfig(ca.ManagerRole)
assert.NoError(t, err)
// Create a new RootCA, and change the policy to issue 6 minute certificates.
// Because of the default backdate of 5 minutes, this issues certificates
// valid for 1 minute.
newRootCA, err := ca.NewRootCA(tc.RootCA.Cert, tc.RootCA.Key, ca.DefaultNodeCertExpiration)
assert.NoError(t, err)
newRootCA.Signer.SetPolicy(&cfconfig.Signing{
Default: &cfconfig.SigningProfile{
Usage: []string{"signing", "key encipherment", "server auth", "client auth"},
Expiry: 6 * time.Minute,
},
})
// Create a new CSR and overwrite the key on disk
csr, key, err := ca.GenerateNewCSR()
assert.NoError(t, err)
// Issue a new certificate with the same details as the current config, but with 1 min expiration time
c := nodeConfig.ClientTLSCreds
signedCert, err := newRootCA.ParseValidateAndSignCSR(csr, c.NodeID(), c.Role(), c.Organization())
assert.NoError(t, err)
assert.NotNil(t, signedCert)
// Overwrite the certificate on disk with one that expires in 1 minute
err = ioutils.AtomicWriteFile(tc.Paths.Node.Cert, signedCert, 0644)
assert.NoError(t, err)
err = ioutils.AtomicWriteFile(tc.Paths.Node.Key, key, 0600)
assert.NoError(t, err)
// Delete the node from the backend store
err = tc.MemoryStore.Update(func(tx store.Tx) error {
node := store.GetNode(tx, nodeConfig.ClientTLSCreds.NodeID())
assert.NotNil(t, node)
return store.DeleteNode(tx, nodeConfig.ClientTLSCreds.NodeID())
})
assert.NoError(t, err)
renew := make(chan struct{})
updates := ca.RenewTLSConfig(ctx, nodeConfig, tc.Remotes, renew)
select {
case <-time.After(10 * time.Second):
assert.Fail(t, "TestRenewTLSConfig timed-out")
case certUpdate := <-updates:
assert.Error(t, certUpdate.Err)
assert.Contains(t, certUpdate.Err.Error(), "not found when attempting to renew certificate")
}
}
func TestRenewTLSConfigManager(t *testing.T) {
tc := testutils.NewTestCA(t)
defer tc.Stop()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
// Get a new nodeConfig with a TLS cert that has the default Cert duration
nodeConfig, err := tc.WriteNewNodeConfig(ca.ManagerRole)
assert.NoError(t, err)
// Create a new RootCA, and change the policy to issue 6 minute certificates
newRootCA, err := ca.NewRootCA(tc.RootCA.Cert, tc.RootCA.Key, ca.DefaultNodeCertExpiration)
assert.NoError(t, err)
newRootCA.Signer.SetPolicy(&cfconfig.Signing{
Default: &cfconfig.SigningProfile{
Usage: []string{"signing", "key encipherment", "server auth", "client auth"},
Expiry: 6 * time.Minute,
},
})
// Create a new CSR and overwrite the key on disk
csr, _, err := ca.GenerateAndWriteNewKey(tc.Paths.Node)
assert.NoError(t, err)
// Issue a new certificate with the same details as the current config, but with 6 min expiration time
c := nodeConfig.ClientTLSCreds
signedCert, err := newRootCA.ParseValidateAndSignCSR(csr, c.NodeID(), c.Role(), c.Organization())
assert.NoError(t, err)
assert.NotNil(t, signedCert)
// Overwrite the certificate on disk with one that expires in 1 minute
err = ioutils.AtomicWriteFile(tc.Paths.Node.Cert, signedCert, 0644)
assert.NoError(t, err)
// Get a new nodeConfig with a TLS cert that has 6 minutes to live
var success, timeout bool
renew := make(chan struct{})
updates := ca.RenewTLSConfig(ctx, nodeConfig, tc.TempDir, tc.Picker, renew)
for {
select {
case <-time.After(2 * time.Second):
timeout = true
case certUpdate := <-updates:
assert.NoError(t, certUpdate.Err)
assert.NotNil(t, certUpdate)
assert.Equal(t, ca.ManagerRole, certUpdate.Role)
success = true
}
if timeout {
assert.Fail(t, "TestRenewTLSConfig timed-out")
break
}
if success {
break
}
}
}
func (n *Node) run(ctx context.Context) (err error) {
defer func() {
n.err = err
close(n.closed)
}()
ctx, cancel := context.WithCancel(ctx)
defer cancel()
ctx = log.WithModule(ctx, "node")
go func() {
select {
case <-ctx.Done():
case <-n.stopped:
cancel()
}
}()
// NOTE: When this node is created by NewNode(), our nodeID is set if
// n.loadCertificates() succeeded in loading TLS credentials.
if n.config.JoinAddr == "" && n.nodeID == "" {
if err := n.bootstrapCA(); err != nil {
return err
}
}
if n.config.JoinAddr != "" || n.config.ForceNewCluster {
n.remotes = newPersistentRemotes(filepath.Join(n.config.StateDir, stateFilename))
if n.config.JoinAddr != "" {
n.remotes.Observe(api.Peer{Addr: n.config.JoinAddr}, remotes.DefaultObservationWeight)
}
}
// Obtain new certs and setup TLS certificates renewal for this node:
// - We call LoadOrCreateSecurityConfig which blocks until a valid certificate has been issued
// - We retrieve the nodeID from LoadOrCreateSecurityConfig through the info channel. This allows
// us to display the ID before the certificate gets issued (for potential approval).
// - We wait for LoadOrCreateSecurityConfig to finish since we need a certificate to operate.
// - Given a valid certificate, spin a renewal go-routine that will ensure that certificates stay
// up to date.
issueResponseChan := make(chan api.IssueNodeCertificateResponse, 1)
go func() {
select {
case <-ctx.Done():
case resp := <-issueResponseChan:
log.G(log.WithModule(ctx, "tls")).WithFields(logrus.Fields{
"node.id": resp.NodeID,
}).Debugf("requesting certificate")
n.Lock()
n.nodeID = resp.NodeID
n.nodeMembership = resp.NodeMembership
n.Unlock()
close(n.certificateRequested)
}
}()
certDir := filepath.Join(n.config.StateDir, "certificates")
securityConfig, err := ca.LoadOrCreateSecurityConfig(ctx, certDir, n.config.JoinToken, ca.ManagerRole, n.remotes, issueResponseChan)
if err != nil {
return err
}
taskDBPath := filepath.Join(n.config.StateDir, "worker/tasks.db")
if err := os.MkdirAll(filepath.Dir(taskDBPath), 0777); err != nil {
return err
}
db, err := bolt.Open(taskDBPath, 0666, nil)
if err != nil {
return err
}
defer db.Close()
if err := n.loadCertificates(); err != nil {
return err
}
forceCertRenewal := make(chan struct{})
renewCert := func() {
select {
case forceCertRenewal <- struct{}{}:
case <-ctx.Done():
}
}
go func() {
for {
select {
case <-ctx.Done():
return
case node := <-n.notifyNodeChange:
// If the server is sending us a ForceRenewal State, renew
if node.Certificate.Status.State == api.IssuanceStateRotate {
renewCert()
continue
}
n.Lock()
// If we got a role change, renew
lastRole := n.role
role := ca.WorkerRole
if node.Spec.Role == api.NodeRoleManager {
role = ca.ManagerRole
}
if lastRole == role {
n.Unlock()
continue
}
// switch role to agent immediately to shutdown manager early
if role == ca.WorkerRole {
n.role = role
n.roleCond.Broadcast()
}
n.Unlock()
renewCert()
}
}
}()
updates := ca.RenewTLSConfig(ctx, securityConfig, certDir, n.remotes, forceCertRenewal)
go func() {
for {
select {
case certUpdate := <-updates:
if certUpdate.Err != nil {
logrus.Warnf("error renewing TLS certificate: %v", certUpdate.Err)
continue
}
n.Lock()
n.role = certUpdate.Role
n.roleCond.Broadcast()
n.Unlock()
case <-ctx.Done():
return
}
}
}()
role := n.role
managerReady := make(chan struct{})
agentReady := make(chan struct{})
var managerErr error
var agentErr error
var wg sync.WaitGroup
wg.Add(2)
go func() {
managerErr = n.runManager(ctx, securityConfig, managerReady) // store err and loop
wg.Done()
cancel()
}()
go func() {
agentErr = n.runAgent(ctx, db, securityConfig.ClientTLSCreds, agentReady)
wg.Done()
cancel()
}()
go func() {
<-agentReady
if role == ca.ManagerRole {
<-managerReady
}
close(n.ready)
}()
wg.Wait()
if managerErr != nil && managerErr != context.Canceled {
return managerErr
}
if agentErr != nil && agentErr != context.Canceled {
return agentErr
}
return err
}
func (n *Node) run(ctx context.Context) (err error) {
defer func() {
n.err = err
close(n.closed)
}()
ctx, cancel := context.WithCancel(ctx)
defer cancel()
ctx = log.WithModule(ctx, "node")
go func() {
select {
case <-ctx.Done():
case <-n.stopped:
cancel()
}
}()
securityConfig, err := n.loadSecurityConfig(ctx)
if err != nil {
return err
}
taskDBPath := filepath.Join(n.config.StateDir, "worker/tasks.db")
if err := os.MkdirAll(filepath.Dir(taskDBPath), 0777); err != nil {
return err
}
db, err := bolt.Open(taskDBPath, 0666, nil)
if err != nil {
return err
}
defer db.Close()
forceCertRenewal := make(chan struct{})
renewCert := func() {
select {
case forceCertRenewal <- struct{}{}:
case <-ctx.Done():
}
}
go func() {
for {
select {
case <-ctx.Done():
return
case node := <-n.notifyNodeChange:
// If the server is sending us a ForceRenewal State, renew
if node.Certificate.Status.State == api.IssuanceStateRotate {
renewCert()
continue
}
n.Lock()
// If we got a role change, renew
lastRole := n.role
role := ca.WorkerRole
if node.Spec.Role == api.NodeRoleManager {
role = ca.ManagerRole
}
if lastRole == role {
n.Unlock()
continue
}
// switch role to agent immediately to shutdown manager early
if role == ca.WorkerRole {
n.role = role
n.roleCond.Broadcast()
}
n.Unlock()
renewCert()
}
}
}()
updates := ca.RenewTLSConfig(ctx, securityConfig, n.remotes, forceCertRenewal)
go func() {
for {
select {
case certUpdate := <-updates:
if certUpdate.Err != nil {
logrus.Warnf("error renewing TLS certificate: %v", certUpdate.Err)
continue
}
n.Lock()
n.role = certUpdate.Role
n.roleCond.Broadcast()
n.Unlock()
case <-ctx.Done():
return
}
}
}()
role := n.role
managerReady := make(chan struct{})
agentReady := make(chan struct{})
var managerErr error
var agentErr error
var wg sync.WaitGroup
wg.Add(2)
go func() {
managerErr = n.superviseManager(ctx, securityConfig, managerReady) // store err and loop
wg.Done()
}()
go func() {
agentErr = n.runAgent(ctx, db, securityConfig.ClientTLSCreds, agentReady)
wg.Done()
}()
go func() {
<-agentReady
if role == ca.ManagerRole {
<-managerReady
}
close(n.ready)
}()
wg.Wait()
if managerErr != nil && managerErr != context.Canceled {
return managerErr
}
if agentErr != nil && agentErr != context.Canceled {
return agentErr
}
return err
}
func (n *Node) run(ctx context.Context) (err error) {
defer func() {
n.err = err
close(n.closed)
}()
ctx, cancel := context.WithCancel(ctx)
defer cancel()
ctx = log.WithLogger(ctx, log.G(ctx).WithField("module", "node"))
go func() {
select {
case <-ctx.Done():
case <-n.stopped:
cancel()
}
}()
if n.config.JoinAddr == "" && n.nodeID == "" {
if err := n.bootstrapCA(); err != nil {
return err
}
}
if n.config.JoinAddr != "" || n.config.ForceNewCluster {
n.remotes = newPersistentRemotes(filepath.Join(n.config.StateDir, stateFilename))
if n.config.JoinAddr != "" {
n.remotes.Observe(api.Peer{Addr: n.config.JoinAddr}, 1)
}
}
csrRole := n.role
if n.config.IsManager { // todo: temporary
csrRole = ca.ManagerRole
}
// Obtain new certs and setup TLS certificates renewal for this node:
// - We call LoadOrCreateSecurityConfig which blocks until a valid certificate has been issued
// - We retrieve the nodeID from LoadOrCreateSecurityConfig through the info channel. This allows
// us to display the ID before the certificate gets issued (for potential approval).
// - We wait for LoadOrCreateSecurityConfig to finish since we need a certificate to operate.
// - Given a valid certificate, spin a renewal go-routine that will ensure that certificates stay
// up to date.
issueResponseChan := make(chan api.IssueNodeCertificateResponse, 1)
go func() {
select {
case <-ctx.Done():
case resp := <-issueResponseChan:
logrus.Debugf("Requesting certificate for NodeID: %v", resp.NodeID)
n.Lock()
n.nodeID = resp.NodeID
n.nodeMembership = resp.NodeMembership
n.Unlock()
close(n.certificateRequested)
}
}()
certDir := filepath.Join(n.config.StateDir, "certificates")
securityConfig, err := ca.LoadOrCreateSecurityConfig(ctx, certDir, n.config.CAHash, n.config.Secret, csrRole, picker.NewPicker(n.remotes), issueResponseChan)
if err != nil {
return err
}
taskDBPath := filepath.Join(n.config.StateDir, "worker/tasks.db")
if err := os.MkdirAll(filepath.Dir(taskDBPath), 0777); err != nil {
return err
}
db, err := bolt.Open(taskDBPath, 0666, nil)
if err != nil {
return err
}
defer db.Close()
if err := n.loadCertificates(); err != nil {
return err
}
if n.role == ca.ManagerRole {
n.managerRoleCh <- struct{}{}
}
forceCertRenewal := make(chan struct{})
go func() {
n.RLock()
lastRole := n.role
n.RUnlock()
for {
select {
case <-ctx.Done():
return
case apirole := <-n.roleChangeReq:
role := ca.AgentRole
if apirole == api.NodeRoleManager {
role = ca.ManagerRole
}
if lastRole != role {
forceCertRenewal <- struct{}{}
}
lastRole = role
}
}
}()
updates := ca.RenewTLSConfig(ctx, securityConfig, certDir, picker.NewPicker(n.remotes), forceCertRenewal)
go func() {
for {
select {
case certUpdate := <-updates:
if ctx.Err() != nil {
return
}
if certUpdate.Err != nil {
logrus.Warnf("error renewing TLS certificate: %v", certUpdate.Err)
continue
}
n.Lock()
n.role = certUpdate.Role
if n.role == ca.ManagerRole {
n.managerRoleCh <- struct{}{}
}
n.Unlock()
case <-ctx.Done():
return
}
}
}()
role := n.role
managerReady := make(chan struct{})
agentReady := make(chan struct{})
var managerErr error
var agentErr error
var wg sync.WaitGroup
wg.Add(2)
go func() {
managerErr = n.runManager(ctx, securityConfig, managerReady) // store err and loop
wg.Done()
cancel()
}()
go func() {
agentErr = n.runAgent(ctx, db, securityConfig.ClientTLSCreds, agentReady)
wg.Done()
cancel()
}()
go func() {
<-agentReady
if role == ca.ManagerRole {
<-managerReady
}
close(n.ready)
}()
wg.Wait()
if managerErr != nil && managerErr != context.Canceled {
return managerErr
}
if agentErr != nil && agentErr != context.Canceled {
return agentErr
}
return err
}