From 81f632f2a127c7b782f77a56555ad5aea91b37a4 Mon Sep 17 00:00:00 2001 From: Gyuho Lee Date: Wed, 11 Apr 2018 10:52:52 -0700 Subject: [PATCH] functional/rpcpb: add "SIGQUIT_AND_REMOVE_QUORUM_AND_RESTORE_SNAPSHOT_FROM_SCRATCH" Signed-off-by: Gyuho Lee --- functional/rpcpb/rpc.pb.go | 342 ++++++++++++++++++++----------------- functional/rpcpb/rpc.proto | 23 +++ 2 files changed, 207 insertions(+), 158 deletions(-) diff --git a/functional/rpcpb/rpc.pb.go b/functional/rpcpb/rpc.pb.go index c679e76d2..67ad9b25f 100644 --- a/functional/rpcpb/rpc.pb.go +++ b/functional/rpcpb/rpc.pb.go @@ -202,6 +202,28 @@ const ( // snapshot from the newly elected leader. As always, after recovery, each // member must be able to process client requests. FailureCase_SIGQUIT_AND_REMOVE_LEADER_UNTIL_TRIGGER_SNAPSHOT FailureCase = 13 + // SIGQUIT_AND_REMOVE_QUORUM_AND_RESTORE_SNAPSHOT_FROM_SCRATCH first stops + // majority number of nodes, deletes data directories on those quorum nodes, + // to make the whole cluster inoperable. Now that quorum and their data are + // totally destroyed, cluster cannot even remove unavailable nodes (e.g. 2 + // out of 3 are lost, so no leader can be elected). + // Let's assume 3-node cluster of node A, B, and C. One day, node A and B + // are destroyed and all their data are gone. The only viable solution is + // to recover from C's latest snapshot. + // Tester simulates this scenario by: + // 1. Download snapshot from node C, before destroying node A and B. + // 2. Destroy node A and B, and make the whole cluster inoperable. + // 3. Now node C cannot operate either. + // 4. SIGTERM node C and remove its data directories. + // 5. Restore a new seed member from node C's latest snapshot file. + // 6. Add another member to establish 2-node cluster. + // 7. Add another member to establish 3-node cluster. + // The expected behavior is that etcd successfully recovers from such + // disastrous situation as only 1-node survives out of 3-node cluster, + // new members joins the existing cluster, and previous data from snapshot + // are still preserved after recovery process. As always, after recovery, + // each member must be able to process client requests. + FailureCase_SIGQUIT_AND_REMOVE_QUORUM_AND_RESTORE_SNAPSHOT_FROM_SCRATCH FailureCase = 14 // BLACKHOLE_PEER_PORT_TX_RX_ONE_FOLLOWER drops all outgoing/incoming // packets from/to the peer port on a randomly chosen follower // (non-leader), and waits for "failure-delay-ms" until recovery. @@ -388,6 +410,7 @@ var FailureCase_name = map[int32]string{ 11: "SIGQUIT_AND_REMOVE_ONE_FOLLOWER_UNTIL_TRIGGER_SNAPSHOT", 12: "SIGQUIT_AND_REMOVE_LEADER", 13: "SIGQUIT_AND_REMOVE_LEADER_UNTIL_TRIGGER_SNAPSHOT", + 14: "SIGQUIT_AND_REMOVE_QUORUM_AND_RESTORE_SNAPSHOT_FROM_SCRATCH", 100: "BLACKHOLE_PEER_PORT_TX_RX_ONE_FOLLOWER", 101: "BLACKHOLE_PEER_PORT_TX_RX_ONE_FOLLOWER_UNTIL_TRIGGER_SNAPSHOT", 102: "BLACKHOLE_PEER_PORT_TX_RX_LEADER", @@ -422,6 +445,7 @@ var FailureCase_value = map[string]int32{ "SIGQUIT_AND_REMOVE_ONE_FOLLOWER_UNTIL_TRIGGER_SNAPSHOT": 11, "SIGQUIT_AND_REMOVE_LEADER": 12, "SIGQUIT_AND_REMOVE_LEADER_UNTIL_TRIGGER_SNAPSHOT": 13, + "SIGQUIT_AND_REMOVE_QUORUM_AND_RESTORE_SNAPSHOT_FROM_SCRATCH": 14, "BLACKHOLE_PEER_PORT_TX_RX_ONE_FOLLOWER": 100, "BLACKHOLE_PEER_PORT_TX_RX_ONE_FOLLOWER_UNTIL_TRIGGER_SNAPSHOT": 101, "BLACKHOLE_PEER_PORT_TX_RX_LEADER": 102, @@ -4214,162 +4238,164 @@ var ( func init() { proto.RegisterFile("rpcpb/rpc.proto", fileDescriptorRpc) } var fileDescriptorRpc = []byte{ - // 2512 bytes of a gzipped FileDescriptorProto - 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x59, 0xdb, 0x76, 0xdb, 0xc6, - 0xd5, 0x36, 0x44, 0xcb, 0x8e, 0x86, 0x3a, 0x50, 0xa3, 0x83, 0x61, 0xd9, 0x16, 0x64, 0x38, 0xce, - 0x6f, 0x2b, 0x3f, 0xe4, 0xd4, 0xce, 0x4a, 0x1b, 0xe7, 0xe0, 0x80, 0x14, 0x2c, 0xb1, 0x82, 0x48, - 0x7a, 0x08, 0xd9, 0xc9, 0x15, 0x0b, 0x91, 0x23, 0x09, 0x35, 0x05, 0x30, 0xc0, 0xd0, 0x91, 0xf2, - 0x02, 0xbd, 0xed, 0x79, 0xf5, 0xaa, 0x4f, 0xd0, 0xf4, 0x39, 0x9c, 0xf4, 0x94, 0xb6, 0xf7, 0x5c, - 0xad, 0xf3, 0x06, 0x5c, 0x3d, 0xa5, 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SIGQUIT_AND_REMOVE_LEADER_UNTIL_TRIGGER_SNAPSHOT = 13; + // SIGQUIT_AND_REMOVE_QUORUM_AND_RESTORE_SNAPSHOT_FROM_SCRATCH first stops + // majority number of nodes, deletes data directories on those quorum nodes, + // to make the whole cluster inoperable. Now that quorum and their data are + // totally destroyed, cluster cannot even remove unavailable nodes (e.g. 2 + // out of 3 are lost, so no leader can be elected). + // Let's assume 3-node cluster of node A, B, and C. One day, node A and B + // are destroyed and all their data are gone. The only viable solution is + // to recover from C's latest snapshot. + // Tester simulates this scenario by: + // 1. Download snapshot from node C, before destroying node A and B. + // 2. Destroy node A and B, and make the whole cluster inoperable. + // 3. Now node C cannot operate either. + // 4. SIGTERM node C and remove its data directories. + // 5. Restore a new seed member from node C's latest snapshot file. + // 6. Add another member to establish 2-node cluster. + // 7. Add another member to establish 3-node cluster. + // The expected behavior is that etcd successfully recovers from such + // disastrous situation as only 1-node survives out of 3-node cluster, + // new members joins the existing cluster, and previous data from snapshot + // are still preserved after recovery process. As always, after recovery, + // each member must be able to process client requests. + SIGQUIT_AND_REMOVE_QUORUM_AND_RESTORE_SNAPSHOT_FROM_SCRATCH = 14; + // BLACKHOLE_PEER_PORT_TX_RX_ONE_FOLLOWER drops all outgoing/incoming // packets from/to the peer port on a randomly chosen follower // (non-leader), and waits for "failure-delay-ms" until recovery.