Add CA config to connect section of agent config

agent/agent.go

@@ -894,6 +894,24 @@ func (a *Agent) consulConfig() (*consul.Config, error) {
 	base.TLSCipherSuites = a.config.TLSCipherSuites
 	base.TLSPreferServerCipherSuites = a.config.TLSPreferServerCipherSuites
 
+	// Copy the Connect CA bootstrap config
+	if a.config.ConnectEnabled {
+		base.ConnectEnabled = true
+
+		if a.config.ConnectCAProvider != "" {
+			base.CAConfig.Provider = a.config.ConnectCAProvider
+
+			// Merge with the default config if it's the consul provider.
+			if a.config.ConnectCAProvider == "consul" {
+				for k, v := range a.config.ConnectCAConfig {
+					base.CAConfig.Config[k] = v
+				}
+			} else {
+				base.CAConfig.Config = a.config.ConnectCAConfig
+			}
+		}
+	}
+
 	// Setup the user event callback
 	base.UserEventHandler = func(e serf.UserEvent) {
 		select {

agent/config/builder.go

@@ -522,6 +522,14 @@ func (b *Builder) Build() (rt RuntimeConfig, err error) {
 
 	// Connect proxy defaults.
 	proxyBindMinPort, proxyBindMaxPort := b.connectProxyPortRange(c.Connect)
+	var connectEnabled bool
+	var connectCAProvider string
+	var connectCAConfig map[string]interface{}
+	if c.Connect != nil {
+		connectEnabled = b.boolVal(c.Connect.Enabled)
+		connectCAProvider = b.stringVal(c.Connect.CAProvider)
+		connectCAConfig = c.Connect.CAConfig
+	}
 
 	// ----------------------------------------------------------------
 	// build runtime config
@@ -641,8 +649,11 @@ func (b *Builder) Build() (rt RuntimeConfig, err error) {
 		CheckUpdateInterval:         b.durationVal("check_update_interval", c.CheckUpdateInterval),
 		Checks:                      checks,
 		ClientAddrs:                 clientAddrs,
+		ConnectEnabled:              connectEnabled,
 		ConnectProxyBindMinPort:     proxyBindMinPort,
 		ConnectProxyBindMaxPort:     proxyBindMaxPort,
+		ConnectCAProvider:           connectCAProvider,
+		ConnectCAConfig:             connectCAConfig,
 		DataDir:                     b.stringVal(c.DataDir),
 		Datacenter:                  strings.ToLower(b.stringVal(c.Datacenter)),
 		DevMode:                     b.boolVal(b.Flags.DevMode),

agent/config/config.go

@@ -368,8 +368,10 @@ type ServiceConnectProxy struct {
 type Connect struct {
 	// Enabled opts the agent into connect. It should be set on all clients and
 	// servers in a cluster for correct connect operation. TODO(banks) review that.
-	Enabled       bool                  `json:"enabled,omitempty" hcl:"enabled" mapstructure:"enabled"`
-	ProxyDefaults *ConnectProxyDefaults `json:"proxy_defaults,omitempty" hcl:"proxy_defaults" mapstructure:"proxy_defaults"`
+	Enabled       *bool                  `json:"enabled,omitempty" hcl:"enabled" mapstructure:"enabled"`
+	ProxyDefaults *ConnectProxyDefaults  `json:"proxy_defaults,omitempty" hcl:"proxy_defaults" mapstructure:"proxy_defaults"`
+	CAProvider    *string                `json:"ca_provider,omitempty" hcl:"ca_provider" mapstructure:"ca_provider"`
+	CAConfig      map[string]interface{} `json:"ca_config,omitempty" hcl:"ca_config" mapstructure:"ca_config"`
 }
 
 // ConnectProxyDefaults is the agent-global connect proxy configuration.

agent/config/runtime.go

@@ -647,6 +647,12 @@ type RuntimeConfig struct {
 	// registration time to allow global control of defaults.
 	ConnectProxyDefaultConfig map[string]interface{}
 
+	// ConnectCAProvider is the type of CA provider to use with Connect.
+	ConnectCAProvider string
+
+	// ConnectCAConfig is the config to use for the CA provider.
+	ConnectCAConfig map[string]interface{}
+
 	// DNSAddrs contains the list of TCP and UDP addresses the DNS server will
 	// bind to. If the DNS endpoint is disabled (ports.dns <= 0) the list is
 	// empty.

agent/config/runtime_test.go

@@ -2354,6 +2354,11 @@ func TestFullConfig(t *testing.T) {
 			"check_update_interval": "16507s",
 			"client_addr": "93.83.18.19",
 			"connect": {
+				"ca_provider": "b8j4ynx9",
+				"ca_config": {
+					"g4cvJyys": "IRLXE9Ds",
+					"hyMy9Oxn": "XeBp4Sis"
+				},
 				"enabled": true,
 				"proxy_defaults": {
 					"bind_min_port": 2000,
@@ -2811,6 +2816,11 @@ func TestFullConfig(t *testing.T) {
 			check_update_interval = "16507s"
 			client_addr = "93.83.18.19"
 			connect {
+				ca_provider = "b8j4ynx9"
+				ca_config {
+					"g4cvJyys" = "IRLXE9Ds"
+					"hyMy9Oxn" = "XeBp4Sis"
+				}
 				enabled = true
 				proxy_defaults {
 					bind_min_port = 2000
@@ -3403,10 +3413,15 @@ func TestFullConfig(t *testing.T) {
 				DeregisterCriticalServiceAfter: 13209 * time.Second,
 			},
 		},
-		CheckUpdateInterval:       16507 * time.Second,
-		ClientAddrs:               []*net.IPAddr{ipAddr("93.83.18.19")},
-		ConnectProxyBindMinPort:   2000,
-		ConnectProxyBindMaxPort:   3000,
+		CheckUpdateInterval:     16507 * time.Second,
+		ClientAddrs:             []*net.IPAddr{ipAddr("93.83.18.19")},
+		ConnectProxyBindMinPort: 2000,
+		ConnectProxyBindMaxPort: 3000,
+		ConnectCAProvider:       "b8j4ynx9",
+		ConnectCAConfig: map[string]interface{}{
+			"g4cvJyys": "IRLXE9Ds",
+			"hyMy9Oxn": "XeBp4Sis",
+		},
 		DNSAddrs:                  []net.Addr{tcpAddr("93.95.95.81:7001"), udpAddr("93.95.95.81:7001")},
 		DNSARecordLimit:           29907,
 		DNSAllowStale:             true,

agent/consul/config.go

@@ -348,6 +348,9 @@ type Config struct {
 	// dead servers.
 	AutopilotInterval time.Duration
 
+	// ConnectEnabled is whether to enable Connect features such as the CA.
+	ConnectEnabled bool
+
 	// CAConfig is used to apply the initial Connect CA configuration when
 	// bootstrapping.
 	CAConfig *structs.CAConfiguration

agent/consul/connect_ca_endpoint.go

@@ -1,6 +1,7 @@
 package consul
 
 import (
+	"errors"
 	"fmt"
 	"reflect"
 
@@ -11,6 +12,8 @@ import (
 	"github.com/hashicorp/go-memdb"
 )
 
+var ErrConnectNotEnabled = errors.New("Connect must be enabled in order to use this endpoint")
+
 // ConnectCA manages the Connect CA.
 type ConnectCA struct {
 	// srv is a pointer back to the server.
@@ -21,6 +24,11 @@ type ConnectCA struct {
 func (s *ConnectCA) ConfigurationGet(
 	args *structs.DCSpecificRequest,
 	reply *structs.CAConfiguration) error {
+	// Exit early if Connect hasn't been enabled.
+	if !s.srv.config.ConnectEnabled {
+		return ErrConnectNotEnabled
+	}
+
 	if done, err := s.srv.forward("ConnectCA.ConfigurationGet", args, args, reply); done {
 		return err
 	}
@@ -48,6 +56,11 @@ func (s *ConnectCA) ConfigurationGet(
 func (s *ConnectCA) ConfigurationSet(
 	args *structs.CARequest,
 	reply *interface{}) error {
+	// Exit early if Connect hasn't been enabled.
+	if !s.srv.config.ConnectEnabled {
+		return ErrConnectNotEnabled
+	}
+
 	if done, err := s.srv.forward("ConnectCA.ConfigurationSet", args, args, reply); done {
 		return err
 	}
@@ -244,6 +257,11 @@ func (s *ConnectCA) Roots(
 func (s *ConnectCA) Sign(
 	args *structs.CASignRequest,
 	reply *structs.IssuedCert) error {
+	// Exit early if Connect hasn't been enabled.
+	if !s.srv.config.ConnectEnabled {
+		return ErrConnectNotEnabled
+	}
+
 	if done, err := s.srv.forward("ConnectCA.Sign", args, args, reply); done {
 		return err
 	}

agent/consul/connect_ca_provider.go

@@ -291,7 +291,7 @@ func (c *ConsulCAProvider) CrossSignCA(cert *x509.Certificate) (string, error) {
 
 	privKey, err := connect.ParseSigner(providerState.PrivateKey)
 	if err != nil {
-		return "", fmt.Errorf("error parsing private key %q: %v", providerState.PrivateKey, err)
+		return "", fmt.Errorf("error parsing private key %q: %s", providerState.PrivateKey, err)
 	}
 
 	rootCA, err := connect.ParseCert(providerState.RootCert)
@@ -363,7 +363,7 @@ func (c *ConsulCAProvider) generateCA(privateKey string, sn uint64) (string, err
 
 	privKey, err := connect.ParseSigner(privateKey)
 	if err != nil {
-		return "", fmt.Errorf("error parsing private key %q: %v", privateKey, err)
+		return "", fmt.Errorf("error parsing private key %q: %s", privateKey, err)
 	}
 
 	name := fmt.Sprintf("Consul CA %d", sn)

agent/consul/leader.go

@@ -402,6 +402,11 @@ func (s *Server) initializeCAConfig() (*structs.CAConfiguration, error) {
 // initializeCA sets up the CA provider when gaining leadership, bootstrapping
 // the root in the state store if necessary.
 func (s *Server) initializeCA() error {
+	// Bail if connect isn't enabled.
+	if !s.config.ConnectEnabled {
+		return nil
+	}
+
 	conf, err := s.initializeCAConfig()
 	if err != nil {
 		return err