495 lines
11 KiB
Go
495 lines
11 KiB
Go
package consul
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import (
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"os"
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"testing"
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"time"
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"github.com/hashicorp/consul/sdk/testutil/retry"
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"github.com/hashicorp/consul/testrpc"
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"github.com/hashicorp/raft"
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"github.com/hashicorp/serf/serf"
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"github.com/stretchr/testify/require"
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)
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func TestAutopilot_IdempotentShutdown(t *testing.T) {
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dir1, s1 := testServerWithConfig(t, nil)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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retry.Run(t, func(r *retry.R) { r.Check(waitForLeader(s1)) })
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s1.autopilot.Start()
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s1.autopilot.Start()
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s1.autopilot.Start()
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s1.autopilot.Stop()
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s1.autopilot.Stop()
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s1.autopilot.Stop()
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}
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func TestAutopilot_CleanupDeadServer(t *testing.T) {
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t.Parallel()
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for i := 1; i <= 3; i++ {
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testCleanupDeadServer(t, i)
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}
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}
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func testCleanupDeadServer(t *testing.T, raftVersion int) {
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dc := "dc1"
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conf := func(c *Config) {
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c.Datacenter = dc
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c.Bootstrap = false
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c.BootstrapExpect = 5
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c.RaftConfig.ProtocolVersion = raft.ProtocolVersion(raftVersion)
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}
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dir1, s1 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, s2 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir2)
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defer s2.Shutdown()
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dir3, s3 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir3)
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defer s3.Shutdown()
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dir4, s4 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir4)
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defer s4.Shutdown()
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dir5, s5 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir5)
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defer s5.Shutdown()
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servers := []*Server{s1, s2, s3, s4, s5}
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// Try to join
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joinLAN(t, s2, s1)
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joinLAN(t, s3, s1)
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joinLAN(t, s4, s1)
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joinLAN(t, s5, s1)
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for _, s := range servers {
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testrpc.WaitForLeader(t, s.RPC, dc)
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retry.Run(t, func(r *retry.R) { r.Check(wantPeers(s, 5)) })
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}
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require := require.New(t)
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testrpc.WaitForLeader(t, s1.RPC, "dc1")
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leaderIndex := -1
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for i, s := range servers {
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if s.IsLeader() {
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leaderIndex = i
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break
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}
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}
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require.NotEqual(leaderIndex, -1)
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// Shutdown two non-leader servers
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killed := make(map[string]struct{})
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for i, s := range servers {
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if i != leaderIndex {
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s.Shutdown()
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killed[string(s.config.NodeID)] = struct{}{}
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}
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if len(killed) == 2 {
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break
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}
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}
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retry.Run(t, func(r *retry.R) {
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alive := 0
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for _, m := range servers[leaderIndex].LANMembers() {
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if m.Status == serf.StatusAlive {
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alive++
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}
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}
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if alive != 3 {
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r.Fatalf("Expected three alive servers instead of %d", alive)
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}
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})
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// Make sure the dead servers are removed and we're back to 3 total peers
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for _, s := range servers {
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_, killed := killed[string(s.config.NodeID)]
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if !killed {
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retry.Run(t, func(r *retry.R) { r.Check(wantPeers(s, 3)) })
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}
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}
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}
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func TestAutopilot_CleanupDeadNonvoter(t *testing.T) {
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dir1, s1 := testServer(t)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, s2 := testServerDCBootstrap(t, "dc1", false)
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defer os.RemoveAll(dir2)
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defer s2.Shutdown()
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testrpc.WaitForLeader(t, s1.RPC, "dc1")
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// Have s2 join and then shut it down immediately before it gets a chance to
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// be promoted to a voter.
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joinLAN(t, s2, s1)
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retry.Run(t, func(r *retry.R) {
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r.Check(wantRaft([]*Server{s1, s2}))
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})
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s2.Shutdown()
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retry.Run(t, func(r *retry.R) {
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r.Check(wantRaft([]*Server{s1}))
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})
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}
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func TestAutopilot_CleanupDeadServerPeriodic(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServerWithConfig(t, func(c *Config) {
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c.Datacenter = "dc1"
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c.Bootstrap = true
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})
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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conf := func(c *Config) {
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c.Datacenter = "dc1"
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c.Bootstrap = false
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}
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dir2, s2 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir2)
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defer s2.Shutdown()
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dir3, s3 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir3)
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defer s3.Shutdown()
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dir4, s4 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir4)
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defer s4.Shutdown()
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dir5, s5 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir5)
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defer s5.Shutdown()
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servers := []*Server{s1, s2, s3, s4, s5}
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// Join the servers to s1, and wait until they are all promoted to
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// voters.
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for _, s := range servers[1:] {
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joinLAN(t, s, s1)
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}
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retry.Run(t, func(r *retry.R) {
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r.Check(wantRaft(servers))
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for _, s := range servers {
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r.Check(wantPeers(s, 5))
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}
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})
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// Kill a non-leader server
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s4.Shutdown()
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// Should be removed from the peers automatically
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servers = []*Server{s1, s2, s3, s5}
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retry.Run(t, func(r *retry.R) {
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r.Check(wantRaft(servers))
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for _, s := range servers {
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r.Check(wantPeers(s, 4))
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}
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})
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}
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func TestAutopilot_RollingUpdate(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServerWithConfig(t, func(c *Config) {
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c.Datacenter = "dc1"
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c.Bootstrap = true
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})
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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conf := func(c *Config) {
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c.Datacenter = "dc1"
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c.Bootstrap = false
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}
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dir2, s2 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir2)
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defer s2.Shutdown()
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dir3, s3 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir3)
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defer s3.Shutdown()
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// Join the servers to s1, and wait until they are all promoted to
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// voters.
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servers := []*Server{s1, s2, s3}
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for _, s := range servers[1:] {
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joinLAN(t, s, s1)
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}
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retry.Run(t, func(r *retry.R) {
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r.Check(wantRaft(servers))
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for _, s := range servers {
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r.Check(wantPeers(s, 3))
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}
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})
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// Add one more server like we are doing a rolling update.
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dir4, s4 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir4)
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defer s4.Shutdown()
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joinLAN(t, s1, s4)
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servers = append(servers, s4)
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retry.Run(t, func(r *retry.R) {
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r.Check(wantRaft(servers))
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for _, s := range servers {
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r.Check(wantPeers(s, 3))
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}
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})
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// Now kill one of the "old" nodes like we are doing a rolling update.
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s3.Shutdown()
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isVoter := func() bool {
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future := s1.raft.GetConfiguration()
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if err := future.Error(); err != nil {
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t.Fatalf("err: %v", err)
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}
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for _, s := range future.Configuration().Servers {
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if string(s.ID) == string(s4.config.NodeID) {
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return s.Suffrage == raft.Voter
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}
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}
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t.Fatalf("didn't find s4")
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return false
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}
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// Wait for s4 to stabilize, get promoted to a voter, and for s3 to be
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// removed.
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servers = []*Server{s1, s2, s4}
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retry.Run(t, func(r *retry.R) {
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r.Check(wantRaft(servers))
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for _, s := range servers {
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r.Check(wantPeers(s, 3))
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}
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if !isVoter() {
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r.Fatalf("should be a voter")
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}
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})
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}
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func TestAutopilot_CleanupStaleRaftServer(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServerDCBootstrap(t, "dc1", true)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, s2 := testServerDCBootstrap(t, "dc1", false)
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defer os.RemoveAll(dir2)
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defer s2.Shutdown()
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dir3, s3 := testServerDCBootstrap(t, "dc1", false)
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defer os.RemoveAll(dir3)
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defer s3.Shutdown()
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dir4, s4 := testServerDCBootstrap(t, "dc1", false)
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defer os.RemoveAll(dir4)
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defer s4.Shutdown()
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servers := []*Server{s1, s2, s3}
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// Join the servers to s1
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for _, s := range servers[1:] {
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joinLAN(t, s, s1)
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}
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for _, s := range servers {
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retry.Run(t, func(r *retry.R) { r.Check(wantPeers(s, 3)) })
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}
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testrpc.WaitForLeader(t, s1.RPC, "dc1")
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// Add s4 to peers directly
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addVoterFuture := s1.raft.AddVoter(raft.ServerID(s4.config.NodeID), raft.ServerAddress(joinAddrLAN(s4)), 0, 0)
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if err := addVoterFuture.Error(); err != nil {
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t.Fatal(err)
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}
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// Verify we have 4 peers
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peers, err := s1.numPeers()
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if err != nil {
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t.Fatal(err)
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}
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if peers != 4 {
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t.Fatalf("bad: %v", peers)
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}
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// Wait for s4 to be removed
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for _, s := range []*Server{s1, s2, s3} {
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retry.Run(t, func(r *retry.R) { r.Check(wantPeers(s, 3)) })
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}
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}
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func TestAutopilot_PromoteNonVoter(t *testing.T) {
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t.Parallel()
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dir1, s1 := testServerWithConfig(t, func(c *Config) {
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c.Datacenter = "dc1"
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c.Bootstrap = true
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c.RaftConfig.ProtocolVersion = 3
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c.AutopilotConfig.ServerStabilizationTime = 200 * time.Millisecond
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c.ServerHealthInterval = 100 * time.Millisecond
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c.AutopilotInterval = 100 * time.Millisecond
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})
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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codec := rpcClient(t, s1)
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defer codec.Close()
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testrpc.WaitForLeader(t, s1.RPC, "dc1")
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dir2, s2 := testServerWithConfig(t, func(c *Config) {
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c.Datacenter = "dc1"
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c.Bootstrap = false
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c.RaftConfig.ProtocolVersion = 3
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})
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defer os.RemoveAll(dir2)
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defer s2.Shutdown()
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joinLAN(t, s2, s1)
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// Make sure we see it as a nonvoter initially. We wait until half
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// the stabilization period has passed.
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retry.Run(t, func(r *retry.R) {
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future := s1.raft.GetConfiguration()
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if err := future.Error(); err != nil {
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r.Fatal(err)
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}
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servers := future.Configuration().Servers
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if len(servers) != 2 {
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r.Fatalf("bad: %v", servers)
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}
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if servers[1].Suffrage != raft.Nonvoter {
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r.Fatalf("bad: %v", servers)
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}
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health := s1.autopilot.GetServerHealth(string(servers[1].ID))
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if health == nil {
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r.Fatal("nil health")
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}
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if !health.Healthy {
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r.Fatalf("bad: %v", health)
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}
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if time.Since(health.StableSince) < s1.config.AutopilotConfig.ServerStabilizationTime/2 {
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r.Fatal("stable period not elapsed")
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}
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})
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// Make sure it ends up as a voter.
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retry.Run(t, func(r *retry.R) {
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future := s1.raft.GetConfiguration()
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if err := future.Error(); err != nil {
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r.Fatal(err)
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}
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servers := future.Configuration().Servers
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if len(servers) != 2 {
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r.Fatalf("bad: %v", servers)
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}
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if servers[1].Suffrage != raft.Voter {
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r.Fatalf("bad: %v", servers)
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}
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})
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}
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func TestAutopilot_BootstrapExpect(t *testing.T) {
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dc := "dc1"
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closeMap := make(map[string]chan struct{})
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conf := func(c *Config) {
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c.Datacenter = dc
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c.Bootstrap = false
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c.BootstrapExpect = 3
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c.AutopilotConfig.MinQuorum = 3
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c.RaftConfig.ProtocolVersion = raft.ProtocolVersion(2)
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c.AutopilotInterval = 100 * time.Millisecond
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//Let us know when a server is actually gone
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ch := make(chan struct{})
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c.NotifyShutdown = func() {
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t.Logf("%v is shutdown", c.NodeName)
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close(ch)
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}
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closeMap[c.NodeName] = ch
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}
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dir1, s1 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir1)
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defer s1.Shutdown()
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dir2, s2 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir2)
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defer s2.Shutdown()
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dir3, s3 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir3)
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defer s3.Shutdown()
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dir4, s4 := testServerWithConfig(t, conf)
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defer os.RemoveAll(dir4)
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defer s4.Shutdown()
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servers := map[string]*Server{s1.config.NodeName: s1,
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s2.config.NodeName: s2,
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s3.config.NodeName: s3,
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s4.config.NodeName: s4}
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// Try to join
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joinLAN(t, s2, s1)
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joinLAN(t, s3, s1)
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joinLAN(t, s4, s1)
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//Differentiate between leader and server
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findStatus := func(leader bool) *Server {
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for _, mem := range servers {
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if mem.IsLeader() && leader {
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return mem
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}
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if !leader && !mem.IsLeader() {
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return mem
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}
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}
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t.Fatalf("no members set")
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return nil
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}
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for _, s := range servers {
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testrpc.WaitForLeader(t, s.RPC, dc)
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retry.Run(t, func(r *retry.R) { r.Check(wantPeers(s, 4)) })
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}
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// Have autopilot take one into left
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dead := findStatus(false)
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dead.Shutdown()
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<-closeMap[dead.config.NodeName]
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retry.Run(t, func(r *retry.R) {
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leader := findStatus(true)
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for _, m := range leader.LANMembers() {
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if m.Name == dead.config.NodeName && m.Status != serf.StatusLeft {
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r.Fatalf("%v should be left, got %v", m.Name, m.Status.String())
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}
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}
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})
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delete(servers, dead.config.NodeName)
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//Autopilot should not take this one into left
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dead = findStatus(false)
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dead.Shutdown()
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<-closeMap[dead.config.NodeName]
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retry.Run(t, func(r *retry.R) {
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leader := findStatus(true)
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for _, m := range leader.LANMembers() {
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if m.Name == dead.config.NodeName && m.Status != serf.StatusFailed {
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r.Fatalf("%v should be failed, got %v", m.Name, m.Status.String())
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}
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}
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})
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}
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