Commit Graph

541 Commits (3ffb3aed3a8f544da02fac84b12367820c90ee7c)

Author SHA1 Message Date
Anthony Romano 4a17097d00 tools/functional-tester: --schedule-cases flag
Command line argument for specifying a schedule of test cases per round.
Default is run each test case once each round.
2016-03-24 19:43:23 -07:00
Xiang Li d0d3b32210 Merge pull request #4850 from xiang90/rm_demo
*: enable v3 by default
2016-03-23 23:48:29 -07:00
Xiang Li 70a9391378 *: enable v3 by default 2016-03-23 17:01:36 -07:00
Gyu-Ho Lee 9fb60deb7c functional-tester: add GRPCURLs for cluster config
GRPC and v2 client address share the same host(port)
but GRPC does not work with schema specified. This fixes
it by adding another member for GRPC without schema, as
we had before.
2016-03-23 16:28:05 -07:00
Gyu-Ho Lee 012143e703 functional-tester: set gRPC endpoint for stresser 2016-03-23 15:23:19 -07:00
Anthony Romano bd832e5b0a *: migrate Godeps to vendor/ 2016-03-22 17:10:28 -07:00
Gyu-Ho Lee bb9a7f5a7c Godeps: semantic versioning cheggaaa/pb
Fix https://github.com/coreos/etcd/issues/4832.
2016-03-21 22:06:16 -07:00
Xiang Li d3809abe42 *: gRPC + HTTP on the same port
We use cmux to do this since we want to do http+https on the same
port in the near future too.
2016-03-21 14:29:25 -07:00
Anthony Romano 1383da1030 benchmark: STM benchmark 2016-03-20 12:21:29 -07:00
Gyu-Ho Lee 58792ca59b bench/cmd: print csv-format timeseries 2016-03-16 11:06:36 -07:00
Gyu-Ho Lee c9e4e2b6dc benchmark: move sample flag to root command
Sample is configuration for reports. This should be
flag at top command.
2016-03-15 10:36:27 -07:00
Gyu-Ho Lee 5eefff12e1 benchmark: printSecondSample with time series 2016-03-15 08:35:03 -07:00
Gyu-Ho Lee a932674a5b benchmark: minor typos 2016-03-14 13:45:08 -07:00
Anthony Romano 78132c9b5b clientv3: use tls.Config in clientv3.Config
Fixes #4648
2016-03-07 16:08:40 -08:00
Gyu-Ho Lee b8912c9fb1 benchmark: change complete notifier first
Fix https://github.com/coreos/etcd/issues/4708.
2016-03-07 14:54:11 -08:00
Gyu-Ho Lee b3f0bcbeb4 functional-tester: less intensive stresser 2016-03-05 13:16:26 -08:00
Gyu-Ho Lee b73c1223d8 Merge pull request #4638 from gyuho/compact
benchmark: add auto-compact flags
2016-03-04 10:15:02 -08:00
Gyu-Ho Lee da0f77dc14 benchmark: measure Put with auto-compact 2016-03-04 09:34:24 -08:00
Gyu-Ho Lee 536b028831 benchmark: watch, key-space-size(max possible key)
By specifying 'key-space-size', we can test min/max-key-range
of keys to watch.

For https://github.com/coreos/etcd/issues/3863.
2016-03-03 13:46:17 -08:00
Anthony Romano 4fb25d5f0e Merge pull request #4613 from heyitsanthony/clientv3-composite
clientv3: compose API interfaces into client struct
2016-02-29 11:23:34 -08:00
Gyu-Ho Lee 64e276800f benchmark: use endpoints for benchmark flag 2016-02-26 16:55:49 -08:00
Anthony Romano 298c1e2487 tools/benchmark: port to clientv3 API 2016-02-25 18:13:26 -08:00
Xiang Li e316678a4d tools/functional-tester: fix leaky issue by closing conn 2016-02-19 22:04:01 -08:00
Gyu-Ho Lee 8bcd823ed7 etcd-tester: continue for deadline exceeded 2016-02-19 13:48:58 -08:00
Gyu-Ho Lee b2bad7bd79 etcd-agent: get base when renaming
Partially related to https://github.com/coreos/etcd/issues/4552.
2016-02-18 09:03:34 -08:00
Gyu-Ho Lee 061e996998 functional-tester: remove log prefixes
capnslog already prefixes with its package name.
2016-02-17 19:01:16 -08:00
Gyu-Ho Lee 7aa62ec595 functional-tester: plog for milli-second timestamp
Standard log package by default only prints out the second-scale
so the 3rd party log feeder mixes the order of the events, which makes
the debugging hard. This replaces it with capnslog and make them consistent
with all other etcd log formats.
2016-02-17 18:39:05 -08:00
Gyu-Ho Lee 239a6d89c5 etcd-tester: 10-second timeout for stressers
For https://github.com/coreos/etcd/issues/4477.
2016-02-17 15:44:05 -08:00
Gyu-Ho Lee 56e3ab0943 etcd-agent: tidy cleanup before SIGKILL
https://github.com/golang/go/blob/master/src/os/exec_posix.go#L18 shows that
cmd.Process.Kill calls syscall.SIGKILL to the command. But
http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_12_01.html explains
'If you send a SIGKILL to a process, you remove any chance for the process to
do a tidy cleanup and shutdown, which might have unfortunate consequences.'
This sends SIGTERM, SIGINT syscalls to the PID so that the process could
have more time to clean up the resources.

Related to https://github.com/coreos/etcd/issues/4517.
2016-02-16 13:08:22 -08:00
Gyu-Ho Lee 20ac633059 Merge pull request #4516 from gyuho/path
etcd-agent: ignore error when no file to rename
2016-02-13 14:24:17 -08:00
Xiang Li cff1208005 Merge pull request #4520 from xiang90/bench
tools/benchmark: support serializable range benchmark
2016-02-13 09:25:24 -08:00
Xiang Li 4d0a2b4215 Merge pull request #4462 from mitake/benchmark-watch
tools/benchmark: revive watch benchmark
2016-02-13 09:24:00 -08:00
Xiang Li 3a9a1c7d9b tools/benchmark: support serializable range benchmark 2016-02-13 09:23:35 -08:00
Hitoshi Mitake 99e7449f44 tools/benchmark: revive watch benchmark
Current watch benchmark seems to be broken. This commit revives it.
2016-02-14 01:15:04 +09:00
Gyu-Ho Lee 205033d25f etcd-agent: ignore error when no file to rename
Fixes https://github.com/coreos/etcd/issues/4512.
When cluster fails before creation of log or data directory
the file does not exist and cannot be renamed. This skips such
error because there's no need to store empty logs in failure_archive.
2016-02-12 16:37:04 -08:00
Xiang Li c15b2a5077 Merge pull request #4514 from xiang90/tester
tools/functional-tester: add metrics
2016-02-12 14:45:10 -08:00
Xiang Li 1bec0e6a0b tools/functional-tester: add metrics 2016-02-12 14:42:41 -08:00
Gyu-Ho Lee 5b2847b338 etcd-tester: use Hash method to get both revision and hash 2016-02-12 14:40:51 -08:00
Gyu-Ho Lee c1851dfca1 etcd-tester: add leader failure cases 2016-02-11 15:46:44 -08:00
Gyu-Ho Lee 78df258ea8 etcd-agent: cleans page cache when cleaning up
Reference:
- https://www.kernel.org/doc/Documentation/sysctl/vm.txt
- https://github.com/torvalds/linux/blob/master/fs/drop_caches.c
2016-02-11 13:48:54 -08:00
Xiang Li 4b68977851 Merge pull request #4481 from xiang90/testing-tool
tools/etcd-dump-logs: support parsing v3 log
2016-02-10 14:00:32 -08:00
Xiang Li 3611a9ad2e tools/etcd-dump-logs: support parsing v3 log 2016-02-10 13:52:02 -08:00
Gyu-Ho Lee 7b2ce70783 etcd-tester: count success for v3
needed for snapshot count comparison
2016-02-09 17:12:03 -08:00
Gyu-Ho Lee 7d2b7e0d23 etcd-tester: close leaky gRPC connections
when closed errors will be one of:

```
grpc.ErrorDesc(err) == context.Canceled.Error() ||
grpc.ErrorDesc(err) == context.DeadlineExceeded.Error() ||
grpc.ErrorDesc(err) == "transport is closing" ||
grpc.ErrorDesc(err) == "grpc: the client connection is closing"
```
2016-02-09 16:26:33 -08:00
Gyu-Ho Lee 16aa263d8c etcd-tester: continue after cleanup 2016-02-09 13:32:39 -08:00
Gyu-Ho Lee c8994aab62 Merge pull request #4466 from gyuho/f0
etcd-tester: close gRPC connection when canceling
2016-02-09 11:07:00 -08:00
Gyu-Ho Lee a46e20f92a etcd-tester: close gRPC connection when canceling
Currently gRPC connection just gets recreated
for every Stress call. When Stress ends or gets
canceled, gRPC connection must also be closed.

For https://github.com/coreos/etcd/issues/4464.
2016-02-09 11:04:16 -08:00
Gyu-Ho Lee e252c0c0ca etcd-tester: fix wrong error checking
Hash method returns either (nil, err) or (Hash, nil).
The current error checking is wrong. It only needs to check
the error is either nil or non-nil.

This causes panic in https://github.com/coreos/etcd/issues/4463
by allowing the case when resp is nil, but err is not nil.
2016-02-09 10:00:05 -08:00
Xiang Li fa71bec550 Merge pull request #4458 from xiang90/cl
etcd-tester: cleanup
2016-02-08 21:16:28 -08:00
Xiang Li 25834211a9 etcd-tester: cleanup 2016-02-08 20:54:25 -08:00
Gyu-Ho Lee 77f753ac32 etcd-agent: mkdir with read/write to all users 2016-02-08 20:50:11 -08:00
Gyu-Ho Lee 16543778f1 etcd-tester: avoid directory name conflict 2016-02-08 13:38:26 -08:00
Gyu-Ho Lee 08dbabdb5f etcd-tester: add compactKV
It compacts storage for every case.
For https://github.com/coreos/etcd/issues/4380.
2016-02-06 15:02:58 -08:00
Gyu-Ho Lee 044f7775e3 etcd-tester: log cancel in stresser
And fix some minor print formats.
2016-02-05 18:31:27 -08:00
Gyu-Ho Lee 09fc764552 functional-tester/etcd-tester: silent grpclog, check revs 2016-02-05 14:04:58 -08:00
Gyu-Ho Lee e2b5b1cd1a functional-tester/etcd-agent: configurable log path 2016-02-05 09:37:24 -08:00
Gyu-Ho Lee 8e1325d9e1 functional-tester/etcd-agent: configurable agent port
To make local testing easier.
2016-02-04 21:10:30 -08:00
Gyu-Ho Lee 220d0c3c14 etcd-agent: fix data-dir path check
Need one more dash to match 'data-dir' flag.
2016-02-04 16:53:01 -08:00
Gyu-Ho Lee 85a4a5b596 functional-tester: fix grpc endpoint, consistent check
And some clean ups.
2016-02-04 15:10:43 -08:00
Gyu-Ho Lee 7a3426a231 tools/functional-tester/etcd-tester: support v3 kv storage 2016-02-03 15:24:54 -08:00
Gyu-Ho Lee ed682c9f08 tools/functional-tester: minor cleanup 2016-02-03 14:30:34 -08:00
Anthony Romano b74a42b286 clientv3: support unix endpoints 2016-02-01 22:24:42 -08:00
Anthony Romano 4380617e1a tools/benchmark: support tls 2016-01-29 16:38:11 -08:00
Heungsub Lee c4a0159601 documentation: fix typo "a etcd" -> "an etcd"
"a" is not a correct article for "etcd".
2016-01-28 19:19:32 +09:00
Anthony Romano a7b6bbff3f tools/benchmark: use clientv3 2016-01-27 12:13:17 -08:00
Gyu-Ho Lee fa21946267 *: pass WithInsecure to grpc.Dial for now
Related to https://github.com/coreos/etcd/issues/4299.
2016-01-27 00:24:03 -08:00
Gyu-Ho Lee 652c01bffe tools/benchmark: update gRPC, proto interface 2016-01-26 17:41:32 -08:00
Xiang Li 6c82d768b2 Merge pull request #4201 from mitake/benchmark-pprof
tools/benchmark: add flags for pprof to storage put
2016-01-13 20:17:30 -08:00
Hitoshi Mitake 1c802e9266 tools/benchmark: add flags for pprof to storage put
This commit adds flags for profiling with runtime/pprof to storage
put:
- --cpuprofile: specify a path of CPU profiling result, if it is not
    empty, profiling is activated
- --memprofile: specify a path of heap profiling result, if it is not
    empty, profiling is activated

Of course, the flags should be added to RootCmd ideally. However,
adding common flags that shared by children command requires the
ongoing PR: https://github.com/spf13/cobra/pull/220 . Therefore this
commit adds the flags to storage put only.
2016-01-14 13:10:35 +09:00
Hitoshi Mitake 16b63310b2 tools/benchmark: remove deadcode
The Execute() function is a deadcode. Let's remove it.
2016-01-13 16:57:53 +09:00
Xiang Li f5753f2f51 *: support lease Attach
Now we can attach keys to leases. And revoking the lease removes all
the attached keys of that lease.
2016-01-09 11:01:58 -08:00
Gyu-Ho Lee a7287b6374 Merge pull request #4161 from gyuho/typo_in_benchmark
tools/benchmark/cmd: print error out to stderr
2016-01-07 18:50:09 -08:00
Anthony Romano 187064187c tools/benchmark: report standard deviation 2016-01-07 15:30:23 -08:00
Gyu-Ho Lee cc39cde319 tools/benchmark/cmd: print error out to stderr 2016-01-07 12:55:26 -08:00
Anthony Romano f9af744be3 lease: move storage.NoLease to lease package 2016-01-07 10:33:44 -08:00
Xiang Li 5dd3f91903 *: make backend outside kv
KV and lease will share the same backend. Thus we need to make
backend outside KV.
2016-01-05 19:55:29 -08:00
Xiang Li 4336278b44 *: support put with lease 2016-01-04 15:54:06 -08:00
Xiang Li ac330bb7c9 *: update watch related proto
1. Add watch/cancel request
2. Add necessary fields in response to return watch error
3. Add watch_id into watch response
2016-01-01 10:22:21 -08:00
Xiang Li a74147384d Merge pull request #4070 from mitake/storage-bench
tools: a new tool for benchmarking storage backends
2015-12-31 22:26:46 -08:00
Hitoshi Mitake 454865bd67 tools: a new tool for benchmarking storage backends
Current etcd repository has a test for benchmarking a storage backend
in storage/kvstore_bench_test.go. However, it is hard to test various
parameters (e.g. batch interval, a number of keys, etc) with the test.

This commit adds a new benchmarking subcommand "storage" to
tools/benchmark. It will encourage analysis of storage backends with
various parameter and complex workloads.

Exmaple usage:
$ ./benchmark storage put
total: 9.894173792s
average: 9.894173ms
minimum latency: 6.596991ms
maximum latency: 29.455695ms
2016-01-01 15:18:54 +09:00
Anthony Romano 1689bb3f02 tools/benchmark: support puts on sequential keys over a bounded keyspace
This patch makes it possible to use benchmark to generate n keys and
make random updates to only those n keys.
2015-12-30 16:47:24 -08:00
Hitoshi Mitake b97f78d356 tools/benchmark: ignore the binary "benchmark" 2015-12-30 16:02:52 +09:00
Anthony Romano 8e728afa62 tools/benchmark: support connecting to several endpoints
--endpoints is comma separated but gRPC blocks forever on comma
separated lists. Instead, round-robin select endpoints when
creating new connections.
2015-12-28 10:22:33 -08:00
Anthony Romano 382103af60 tools/benchmark: stream results into reports
Reports depended on writing all results to a large buffered channel and
reading from that synchronously. Similarly, requests were buffered the
same way which can take significant memory on big request strings. Instead,
have reports stream in results as they're produced then print when the
results channel closes.
2015-12-23 11:24:35 -08:00
Pawel Palucki 4f5f999847 tools/functional-test: add docker support
Commit adds docker bits to run functional tester within containers.

requires:
- docker 1.9 (networking)
- docker-compose
2015-12-18 15:56:18 +01:00
Gyu-Ho Lee 4289871cef tools/function-tester: fix shadowed variables
Fixes for https://github.com/coreos/etcd/issues/3954.
2015-12-12 09:38:20 -08:00
Xiang Li 8d4073d078 Merge pull request #3945 from xiang90/new_watch_bench
tools/benchmark: add watch subcommand.
2015-12-03 16:56:02 -08:00
Xiang Li c6430b3292 tools/benchmark: add watch subcommand.
Watch command run benchmark tests for watch releated operations:
1. watch keys 2. sending events to watchers.

To test 2, this test also puts keys into etcd cluster to trigger
event sending.

Besides the benchmark results showed at client side, the tester
can also monitor the server-side mem/cpu usage and also check
the metrics of slow watchers. If there are a lot of slow watchers,
it means etcd server is over-loaded by watchers.
2015-12-03 15:56:17 -08:00
Xiang Li 93240bd0f0 Merge pull request #3933 from ngaut/fix-shadow-variables
tools: Fix shadow variables and incorrect printing format.
2015-12-01 08:55:22 -08:00
Xiang Li faff00d19e tools: rewrite benchmark tool 2015-11-30 11:52:43 -08:00
ngaut 232439191c tools: Fix shadow variables and incorrect printing format. 2015-11-30 20:13:29 +08:00
Yicheng Qin dfc7cc7a62 tools/etcd-tester: extend timeout for stresser
Extend the timeout from 1s to defaultRequestTimeout 5s.

The 1s may bring unwanted burden to the target member. If the member is
busy at recovering, it has limited bandwidth for client requests. A
short timeout at client side will retry quickly while keeping the
on-going connections. Thus, etcd will queue lots of requests and
connections and takes long time to clear them. This finally causes the
timeout of member health check.

This problem is a general one that how etcd handles amounts of requests
at the same time in a good way. We don't plan to address it at current
stage.
2015-11-16 11:47:08 -08:00
Xiang Li 1a3f7f7fa4 *: rename etcd service to kv service in gRPC 2015-11-04 10:05:49 -08:00
Xiang Li e1b2e7245b tools/etcd-top: add copyright header 2015-11-01 18:19:32 -08:00
Tyler Neely 00557e96af tools: add etcd-top 2015-11-01 18:07:27 -08:00
Xiang Li c4b3ad72d9 Merge pull request #3544 from xiang90/bench
v3benchmark: add put benchmark
2015-09-17 15:10:13 -07:00
Xiang Li f69582e1a2 v3benchmark: add put benchmark 2015-09-17 14:48:07 -07:00
Xiang Li 3a2700141e Merge pull request #3539 from xiang90/bench
godep: use github.com/cheggaaa/pb
2015-09-15 16:12:34 -07:00
Xiang Li 38dd680f2e godep: use github.com/cheggaaa/pb 2015-09-15 16:08:07 -07:00
Xiang Li 8bb50635ce Merge pull request #3538 from xiang90/bench
benchmarkv3: refactoring the main logic
2015-09-15 15:58:32 -07:00
Xiang Li 4deb12fbbb benchmarkv3: refactoring the main logic 2015-09-15 15:57:38 -07:00
Jonathan Boulle 7848ac3979 *: add missing license headers 2015-09-15 14:09:01 -07:00
Alex Kolbasov 2782418923 Godep: fixed missing dependencies 2015-09-04 04:51:44 +00:00
Yicheng Qin 3632a1b9b1 *: add initial read benchmark for etcd v3
It includes the initial read benchmark for etcd v3.

This is the first step to give some rough thoughts. I haven't digged
deeper to answer some questions, including why its performance is not
better than HTTP + json, why one put will cause performance downgrade.
2015-08-25 07:50:18 -07:00
Xiang Li 2b8abeb093 *: remove migration related stuff from 2.2 2015-08-01 19:37:20 +08:00
Yicheng Qin e71d43b58e tools/functional-testing: add help message for flags
Help users to understand what these flags are for.
2015-04-29 13:59:55 -07:00
Yicheng Qin eafdd3b718 Merge pull request #2730 from yichengq/tester-key-param
main: parameterize stress key size and key suffix range
2015-04-27 17:02:36 -07:00
Yicheng Qin 057d21cf79 main: parameterize stress key size and key suffix range
It faciliates tester to adjust the size of each request, the number of
keys in the store and the size of snapshot.
2015-04-27 16:46:56 -07:00
Yicheng Qin 3127a3b659 tools/etcd-tester: wait longer for health
It dramatically reduce the probability that follower failed to catch up
the leader.
2015-04-21 17:55:24 -07:00
Xiang Li a9157ce6d3 build: do not build internal debugging tool
We are still playing around with the dump-log tool.
Stop building it publicly until we are happy with its
ux and functionality.
2015-03-31 11:45:12 -07:00
Yicheng Qin 81750ab2d7 Merge pull request #2600 from yichengq/failure-isolate
tools/functional-tester: add isolate failures
2015-03-29 22:43:51 -07:00
Yicheng Qin 04a62dd54b tools/functional-tester: add isolate failures 2015-03-29 00:29:47 -07:00
Yicheng Qin 097a56fe01 tools/etcd-agent: stop etcd only if it is running
Stop etcd only if it is running, and not report error when stopping etcd
which is not started.
2015-03-28 19:31:06 -07:00
Yicheng Qin d920c5b801 tools/etcd-tester: stress cluster using 50MB snapshot 2015-03-19 14:52:27 -07:00
Xiang Li 46ebb83b90 tools/functional-tester/etcd-tester: report agent status 2015-03-13 15:29:57 -07:00
Xiang Li 83bb02e320 tools/funcational-tester/etcd-agent: log the error for dubgging 2015-03-13 12:08:08 -07:00
Xiang Li e46beb75c8 tools/functional-tester/etcd-agent: add status rpc 2015-03-13 10:48:06 -07:00
Xiang Li 462f32a81b tools/functional-tester: add http status reporter 2015-03-12 12:49:48 -07:00
Yicheng Qin 24a210ab20 tools/etcd-tester: add kill one member tests 2015-03-10 11:38:54 -07:00
Yicheng Qin ba20016f0f tools/etcd-tester: reorganize failures 2015-03-05 21:14:41 -08:00
Yicheng Qin eba6daef4b Merge pull request #2450 from yichengq/335
tools/functional-tester: add cleanup rpc
2015-03-05 16:36:16 -08:00
Yicheng Qin 181ee445c1 better dir name 2015-03-05 16:34:14 -08:00
Yicheng Qin 2152447361 tools/functional-tester: add cleanup rpc 2015-03-05 15:55:28 -08:00
Yicheng Qin 4314b19a2e tools/etcd-agent: recycle etcd zombie when termination 2015-03-05 15:51:11 -08:00
Yicheng Qin 267313a3f8 tools/etcd-tester: add kill majority test 2015-03-05 15:14:14 -08:00
Yicheng Qin 3cffc910de tools/etcd-tester: use stresser 2015-03-05 13:21:49 -08:00
Xiang Li eec52738d8 etcd-tester: initial stresser 2015-03-05 11:06:43 -08:00
Yicheng Qin d5957aebfd tools/etcd-tester: add failure killall 2015-03-05 10:24:21 -08:00
Yicheng Qin 530dd891be tools/etcd-tester: make it work
1. add cluster support
2. add failureNo case
3. add main func
2015-03-05 10:24:21 -08:00
Yicheng Qin 8d3d737993 tools/etcd-agent/client: fix rpc Dial 2015-03-05 10:24:21 -08:00
Yicheng Qin 061baad611 tools/etcd-agent: write etcd log into log file 2015-03-05 10:24:13 -08:00
Yicheng Qin 008bbd2b84 tools/etcd-agent: log rpc actions 2015-03-04 18:29:23 -08:00
Yicheng Qin 9e69aba7aa tools/etcd-agent: add main func 2015-03-04 17:22:56 -08:00
Yicheng Qin 30e6d49bec etcd-tester: fix build 2015-03-04 10:22:53 -08:00
Xiang Li 2bfd266a81 tools/functional-tester: inital commit 2015-03-03 20:12:20 -08:00
Xiang Li d6f8a30f7c tool: dump tool supports index 2015-02-18 09:13:47 -08:00
Xiang Li 161b1d2e2e tools: etcd-dump-logs tool support dump from a given snapshot file 2015-02-11 10:50:04 -08:00
Jonathan Boulle f1ed69e883 *: switch to line comments for copyright
Build tags are not compatible with block comments.
Also adds copyright header to a few places it was missing.
2015-01-26 09:53:30 -08:00
Yicheng Qin 84f62f21ee wal: record and check snapshot 2015-01-06 16:27:40 -08:00
Yicheng Qin 9de4e36b6a tools: move etcd-migrate to tools 2014-12-30 22:48:47 -08:00
Yicheng Qin 8b0c7bf652 tools: add etcd-dump-logs
The tool can dump the log from data directory.
It helps develop and debug.
2014-12-30 16:14:27 -08:00