open-consul/consul/server_test.go
2017-02-23 20:32:13 -08:00

731 lines
18 KiB
Go

package consul
import (
"errors"
"fmt"
"io/ioutil"
"net"
"os"
"strings"
"sync/atomic"
"testing"
"time"
"github.com/hashicorp/consul/testutil"
"github.com/hashicorp/consul/types"
"github.com/hashicorp/go-uuid"
)
var nextPort int32 = 15000
func getPort() int {
return int(atomic.AddInt32(&nextPort, 1))
}
func tmpDir(t *testing.T) string {
dir, err := ioutil.TempDir("", "consul")
if err != nil {
t.Fatalf("err: %v", err)
}
return dir
}
func configureTLS(config *Config) {
config.CAFile = "../test/ca/root.cer"
config.CertFile = "../test/key/ourdomain.cer"
config.KeyFile = "../test/key/ourdomain.key"
}
func testServerConfig(t *testing.T, NodeName string) (string, *Config) {
dir := tmpDir(t)
config := DefaultConfig()
config.NodeName = NodeName
config.Bootstrap = true
config.Datacenter = "dc1"
config.DataDir = dir
config.RPCAddr = &net.TCPAddr{
IP: []byte{127, 0, 0, 1},
Port: getPort(),
}
nodeID, err := uuid.GenerateUUID()
if err != nil {
t.Fatal(err)
}
config.NodeID = types.NodeID(nodeID)
config.SerfLANConfig.MemberlistConfig.BindAddr = "127.0.0.1"
config.SerfLANConfig.MemberlistConfig.BindPort = getPort()
config.SerfLANConfig.MemberlistConfig.SuspicionMult = 2
config.SerfLANConfig.MemberlistConfig.ProbeTimeout = 50 * time.Millisecond
config.SerfLANConfig.MemberlistConfig.ProbeInterval = 100 * time.Millisecond
config.SerfLANConfig.MemberlistConfig.GossipInterval = 100 * time.Millisecond
config.SerfWANConfig.MemberlistConfig.BindAddr = "127.0.0.1"
config.SerfWANConfig.MemberlistConfig.BindPort = getPort()
config.SerfWANConfig.MemberlistConfig.SuspicionMult = 2
config.SerfWANConfig.MemberlistConfig.ProbeTimeout = 50 * time.Millisecond
config.SerfWANConfig.MemberlistConfig.ProbeInterval = 100 * time.Millisecond
config.SerfWANConfig.MemberlistConfig.GossipInterval = 100 * time.Millisecond
config.RaftConfig.LeaderLeaseTimeout = 20 * time.Millisecond
config.RaftConfig.HeartbeatTimeout = 40 * time.Millisecond
config.RaftConfig.ElectionTimeout = 40 * time.Millisecond
config.ReconcileInterval = 100 * time.Millisecond
config.DisableCoordinates = false
config.CoordinateUpdatePeriod = 100 * time.Millisecond
return dir, config
}
func testServer(t *testing.T) (string, *Server) {
return testServerDC(t, "dc1")
}
func testServerDC(t *testing.T, dc string) (string, *Server) {
return testServerDCBootstrap(t, dc, true)
}
func testServerDCBootstrap(t *testing.T, dc string, bootstrap bool) (string, *Server) {
name := fmt.Sprintf("Node %d", getPort())
dir, config := testServerConfig(t, name)
config.Datacenter = dc
config.Bootstrap = bootstrap
server, err := NewServer(config)
if err != nil {
t.Fatalf("err: %v", err)
}
return dir, server
}
func testServerDCExpect(t *testing.T, dc string, expect int) (string, *Server) {
name := fmt.Sprintf("Node %d", getPort())
dir, config := testServerConfig(t, name)
config.Datacenter = dc
config.Bootstrap = false
config.BootstrapExpect = expect
server, err := NewServer(config)
if err != nil {
t.Fatalf("err: %v", err)
}
return dir, server
}
func testServerWithConfig(t *testing.T, cb func(c *Config)) (string, *Server) {
name := fmt.Sprintf("Node %d", getPort())
dir, config := testServerConfig(t, name)
cb(config)
server, err := NewServer(config)
if err != nil {
t.Fatalf("err: %v", err)
}
return dir, server
}
func TestServer_StartStop(t *testing.T) {
dir := tmpDir(t)
defer os.RemoveAll(dir)
config := DefaultConfig()
config.DataDir = dir
// Advertise on localhost.
private, _, err := net.ParseCIDR("127.0.0.1/32")
if err != nil {
t.Fatalf("failed to parse 127.0.0.1 cidr: %v", err)
}
config.RPCAdvertise = &net.TCPAddr{
IP: private,
Port: 8300,
}
server, err := NewServer(config)
if err != nil {
t.Fatalf("err: %v", err)
}
if err := server.Shutdown(); err != nil {
t.Fatalf("err: %v", err)
}
// Idempotent
if err := server.Shutdown(); err != nil {
t.Fatalf("err: %v", err)
}
}
func TestServer_JoinLAN(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, s2 := testServer(t)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Check the members
testutil.WaitForResult(func() (bool, error) {
return len(s1.LANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
testutil.WaitForResult(func() (bool, error) {
return len(s2.LANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
}
func TestServer_JoinWAN(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, s2 := testServerDC(t, "dc2")
defer os.RemoveAll(dir2)
defer s2.Shutdown()
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfWANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinWAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Check the members
testutil.WaitForResult(func() (bool, error) {
return len(s1.WANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
testutil.WaitForResult(func() (bool, error) {
return len(s2.WANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
// Check the remoteConsuls has both
if len(s1.remoteConsuls) != 2 {
t.Fatalf("remote consul missing")
}
testutil.WaitForResult(func() (bool, error) {
return len(s2.remoteConsuls) == 2, nil
}, func(err error) {
t.Fatalf("remote consul missing")
})
}
func TestServer_JoinSeparateLanAndWanAddresses(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, s2 := testServerWithConfig(t, func(c *Config) {
c.NodeName = "s2"
c.Datacenter = "dc2"
// This wan address will be expected to be seen on s1
c.SerfWANConfig.MemberlistConfig.AdvertiseAddr = "127.0.0.2"
// This lan address will be expected to be seen on s3
c.SerfLANConfig.MemberlistConfig.AdvertiseAddr = "127.0.0.3"
})
defer os.RemoveAll(dir2)
defer s2.Shutdown()
dir3, s3 := testServerDC(t, "dc2")
defer os.RemoveAll(dir3)
defer s3.Shutdown()
// Join s2 to s1 on wan
addrs1 := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfWANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinWAN([]string{addrs1}); err != nil {
t.Fatalf("err: %v", err)
}
// Join s3 to s2 on lan
addrs2 := fmt.Sprintf("127.0.0.1:%d",
s2.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s3.JoinLAN([]string{addrs2}); err != nil {
t.Fatalf("err: %v", err)
}
// Check the WAN members on s1
testutil.WaitForResult(func() (bool, error) {
return len(s1.WANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
// Check the WAN members on s2
testutil.WaitForResult(func() (bool, error) {
return len(s2.WANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
// Check the LAN members on s2
testutil.WaitForResult(func() (bool, error) {
return len(s2.LANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
// Check the LAN members on s3
testutil.WaitForResult(func() (bool, error) {
return len(s3.LANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
// Check the remoteConsuls has both
if len(s1.remoteConsuls) != 2 {
t.Fatalf("remote consul missing")
}
if len(s2.remoteConsuls) != 2 {
t.Fatalf("remote consul missing")
}
if len(s2.localConsuls) != 2 {
t.Fatalf("local consul fellow s3 for s2 missing")
}
// Get and check the wan address of s2 from s1
var s2WanAddr string
for _, member := range s1.WANMembers() {
if member.Name == "s2.dc2" {
s2WanAddr = member.Addr.String()
}
}
if s2WanAddr != "127.0.0.2" {
t.Fatalf("s1 sees s2 on a wrong address: %s, expecting: %s", s2WanAddr, "127.0.0.2")
}
// Get and check the lan address of s2 from s3
var s2LanAddr string
for _, lanmember := range s3.LANMembers() {
if lanmember.Name == "s2" {
s2LanAddr = lanmember.Addr.String()
}
}
if s2LanAddr != "127.0.0.3" {
t.Fatalf("s3 sees s2 on a wrong address: %s, expecting: %s", s2LanAddr, "127.0.0.3")
}
}
func TestServer_LeaveLeader(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
// Second server not in bootstrap mode
dir2, s2 := testServerDCBootstrap(t, "dc1", false)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
var p1 int
var p2 int
testutil.WaitForResult(func() (bool, error) {
p1, _ = s1.numPeers()
return p1 == 2, errors.New(fmt.Sprintf("%d", p1))
}, func(err error) {
t.Fatalf("should have 2 peers: %v", err)
})
testutil.WaitForResult(func() (bool, error) {
p2, _ = s2.numPeers()
return p2 == 2, errors.New(fmt.Sprintf("%d", p1))
}, func(err error) {
t.Fatalf("should have 2 peers: %v", err)
})
// Issue a leave to the leader
for _, s := range []*Server{s1, s2} {
if !s.IsLeader() {
continue
}
if err := s.Leave(); err != nil {
t.Fatalf("err: %v", err)
}
}
// Should lose a peer
for _, s := range []*Server{s1, s2} {
testutil.WaitForResult(func() (bool, error) {
p1, _ = s.numPeers()
return p1 == 1, nil
}, func(err error) {
t.Fatalf("should have 1 peer: %v", p1)
})
}
}
func TestServer_Leave(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
// Second server not in bootstrap mode
dir2, s2 := testServerDCBootstrap(t, "dc1", false)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
var p1 int
var p2 int
testutil.WaitForResult(func() (bool, error) {
p1, _ = s1.numPeers()
return p1 == 2, errors.New(fmt.Sprintf("%d", p1))
}, func(err error) {
t.Fatalf("should have 2 peers: %v", err)
})
testutil.WaitForResult(func() (bool, error) {
p2, _ = s2.numPeers()
return p2 == 2, errors.New(fmt.Sprintf("%d", p1))
}, func(err error) {
t.Fatalf("should have 2 peers: %v", err)
})
// Issue a leave to the non-leader
for _, s := range []*Server{s1, s2} {
if s.IsLeader() {
continue
}
if err := s.Leave(); err != nil {
t.Fatalf("err: %v", err)
}
}
// Should lose a peer
for _, s := range []*Server{s1, s2} {
testutil.WaitForResult(func() (bool, error) {
p1, _ = s.numPeers()
return p1 == 1, nil
}, func(err error) {
t.Fatalf("should have 1 peer: %v", p1)
})
}
}
func TestServer_RPC(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
var out struct{}
if err := s1.RPC("Status.Ping", struct{}{}, &out); err != nil {
t.Fatalf("err: %v", err)
}
}
func TestServer_JoinLAN_TLS(t *testing.T) {
dir1, conf1 := testServerConfig(t, "a.testco.internal")
conf1.VerifyIncoming = true
conf1.VerifyOutgoing = true
configureTLS(conf1)
s1, err := NewServer(conf1)
if err != nil {
t.Fatalf("err: %v", err)
}
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, conf2 := testServerConfig(t, "b.testco.internal")
conf2.Bootstrap = false
conf2.VerifyIncoming = true
conf2.VerifyOutgoing = true
configureTLS(conf2)
s2, err := NewServer(conf2)
if err != nil {
t.Fatalf("err: %v", err)
}
defer os.RemoveAll(dir2)
defer s2.Shutdown()
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Check the members
testutil.WaitForResult(func() (bool, error) {
return len(s1.LANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
testutil.WaitForResult(func() (bool, error) {
return len(s2.LANMembers()) == 2, nil
}, func(err error) {
t.Fatalf("bad len")
})
// Verify Raft has established a peer
testutil.WaitForResult(func() (bool, error) {
peers, _ := s1.numPeers()
return peers == 2, nil
}, func(err error) {
t.Fatalf("no peer established")
})
testutil.WaitForResult(func() (bool, error) {
peers, _ := s2.numPeers()
return peers == 2, nil
}, func(err error) {
t.Fatalf("no peer established")
})
}
func TestServer_Expect(t *testing.T) {
// All test servers should be in expect=3 mode, except for the 3rd one,
// but one with expect=0 can cause a bootstrap to occur from the other
// servers as currently implemented.
dir1, s1 := testServerDCExpect(t, "dc1", 3)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
dir2, s2 := testServerDCExpect(t, "dc1", 3)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
dir3, s3 := testServerDCExpect(t, "dc1", 0)
defer os.RemoveAll(dir3)
defer s3.Shutdown()
dir4, s4 := testServerDCExpect(t, "dc1", 3)
defer os.RemoveAll(dir4)
defer s4.Shutdown()
// Join the first two servers.
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
var p1 int
var p2 int
// Should have no peers yet since the bootstrap didn't occur.
testutil.WaitForResult(func() (bool, error) {
p1, _ = s1.numPeers()
return p1 == 0, errors.New(fmt.Sprintf("%d", p1))
}, func(err error) {
t.Fatalf("should have 0 peers: %v", err)
})
testutil.WaitForResult(func() (bool, error) {
p2, _ = s2.numPeers()
return p2 == 0, errors.New(fmt.Sprintf("%d", p2))
}, func(err error) {
t.Fatalf("should have 0 peers: %v", err)
})
// Join the third node.
if _, err := s3.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
var p3 int
// Now we have three servers so we should bootstrap.
testutil.WaitForResult(func() (bool, error) {
p1, _ = s1.numPeers()
return p1 == 3, errors.New(fmt.Sprintf("%d", p1))
}, func(err error) {
t.Fatalf("should have 3 peers: %v", err)
})
testutil.WaitForResult(func() (bool, error) {
p2, _ = s2.numPeers()
return p2 == 3, errors.New(fmt.Sprintf("%d", p2))
}, func(err error) {
t.Fatalf("should have 3 peers: %v", err)
})
testutil.WaitForResult(func() (bool, error) {
p3, _ = s3.numPeers()
return p3 == 3, errors.New(fmt.Sprintf("%d", p3))
}, func(err error) {
t.Fatalf("should have 3 peers: %v", err)
})
// Make sure a leader is elected, grab the current term and then add in
// the fourth server.
testutil.WaitForLeader(t, s1.RPC, "dc1")
termBefore := s1.raft.Stats()["last_log_term"]
if _, err := s4.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
// Wait for the new server to see itself added to the cluster.
var p4 int
testutil.WaitForResult(func() (bool, error) {
p4, _ = s4.numPeers()
return p4 == 4, errors.New(fmt.Sprintf("%d", p4))
}, func(err error) {
t.Fatalf("should have 4 peers: %v", err)
})
// Make sure there's still a leader and that the term didn't change,
// so we know an election didn't occur.
testutil.WaitForLeader(t, s1.RPC, "dc1")
termAfter := s1.raft.Stats()["last_log_term"]
if termAfter != termBefore {
t.Fatalf("looks like an election took place")
}
}
func TestServer_BadExpect(t *testing.T) {
// this one is in expect=3 mode
dir1, s1 := testServerDCExpect(t, "dc1", 3)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
// this one is in expect=2 mode
dir2, s2 := testServerDCExpect(t, "dc1", 2)
defer os.RemoveAll(dir2)
defer s2.Shutdown()
// and this one is in expect=3 mode
dir3, s3 := testServerDCExpect(t, "dc1", 3)
defer os.RemoveAll(dir3)
defer s3.Shutdown()
// Try to join
addr := fmt.Sprintf("127.0.0.1:%d",
s1.config.SerfLANConfig.MemberlistConfig.BindPort)
if _, err := s2.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
var p1 int
var p2 int
// should have no peers yet
testutil.WaitForResult(func() (bool, error) {
p1, _ = s1.numPeers()
return p1 == 0, errors.New(fmt.Sprintf("%d", p1))
}, func(err error) {
t.Fatalf("should have 0 peers: %v", err)
})
testutil.WaitForResult(func() (bool, error) {
p2, _ = s2.numPeers()
return p2 == 0, errors.New(fmt.Sprintf("%d", p2))
}, func(err error) {
t.Fatalf("should have 0 peers: %v", err)
})
// join the third node
if _, err := s3.JoinLAN([]string{addr}); err != nil {
t.Fatalf("err: %v", err)
}
var p3 int
// should still have no peers (because s2 is in expect=2 mode)
testutil.WaitForResult(func() (bool, error) {
p1, _ = s1.numPeers()
return p1 == 0, errors.New(fmt.Sprintf("%d", p1))
}, func(err error) {
t.Fatalf("should have 0 peers: %v", err)
})
testutil.WaitForResult(func() (bool, error) {
p2, _ = s2.numPeers()
return p2 == 0, errors.New(fmt.Sprintf("%d", p2))
}, func(err error) {
t.Fatalf("should have 0 peers: %v", err)
})
testutil.WaitForResult(func() (bool, error) {
p3, _ = s3.numPeers()
return p3 == 0, errors.New(fmt.Sprintf("%d", p3))
}, func(err error) {
t.Fatalf("should have 0 peers: %v", err)
})
}
type fakeGlobalResp struct{}
func (r *fakeGlobalResp) Add(interface{}) {
return
}
func (r *fakeGlobalResp) New() interface{} {
return struct{}{}
}
func TestServer_globalRPCErrors(t *testing.T) {
dir1, s1 := testServerDC(t, "dc1")
defer os.RemoveAll(dir1)
defer s1.Shutdown()
testutil.WaitForResult(func() (bool, error) {
return len(s1.remoteConsuls) == 1, nil
}, func(err error) {
t.Fatalf("Server did not join LAN successfully")
})
// Check that an error from a remote DC is returned
err := s1.globalRPC("Bad.Method", nil, &fakeGlobalResp{})
if err == nil {
t.Fatalf("should have errored")
}
if !strings.Contains(err.Error(), "Bad.Method") {
t.Fatalf("unexpcted error: %s", err)
}
}
func TestServer_Encrypted(t *testing.T) {
dir1, s1 := testServer(t)
defer os.RemoveAll(dir1)
defer s1.Shutdown()
key := []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15}
dir2, s2 := testServerWithConfig(t, func(c *Config) {
c.SerfLANConfig.MemberlistConfig.SecretKey = key
c.SerfWANConfig.MemberlistConfig.SecretKey = key
})
defer os.RemoveAll(dir2)
defer s2.Shutdown()
if s1.Encrypted() {
t.Fatalf("should not be encrypted")
}
if !s2.Encrypted() {
t.Fatalf("should be encrypted")
}
}