SSMS, Simple SWIM-like failure detector and Membership Service, for CS 425 MP2, implemented by Group#29 BaoheZhang&KechenLu, which includes infection-style dissemination, piggyback on membership messages, ping-ack failure detection with suspicion mechanism.
- Language: Golang
- Tested Platform: macOS 10.13.6, CentOS 7
Build this SSMS project is easy. Just run
$ go buildTo deploy on the each machine of the cluster, we have to git clone this repo like:
$ git clone [email protected]:kechenl3/ssms.gitTo simply the repo update and build in the VM cluster, we have a easy-to-use script, each time we push a new commit to remote repo then run
$ ./update_build_all.shTo run our membership service, just execute the ./ssms :
$ ./ssms
[INFO]: Start service
User can do front-end interaction in terminal when SSMS running and all the info/debug/error level logs would be stored in ssms.log file. We have four interaction command in the console.
join, join in the groupleave, voluntarily leave the groupshowlist, show membership listshowid, show the id of this process itself
For example, after we join the group, we can show the list by showlist command, and show own id(including join timestamp and IP) by showid , and of course after leave command, we can show the list which is empty.
But one thing to be noted, we need to start our introducer first, otherwise other nodes cannot join in the group.
[kechenl3@fa18-cs425-g29-10 ssms]$ ./ssms
[INFO]: Start service
join
showlist
------------------------------------------
Size: 10
idx: 0, TS: 1538885500836420235, IP: 172.22.156.95, ST: 1101
idx: 1, TS: 1538885509673591217, IP: 172.22.158.97, ST: 1
idx: 2, TS: 1538885539910014668, IP: 172.22.154.97, ST: 1
idx: 3, TS: 1538885547023251876, IP: 172.22.154.96, ST: 1
idx: 4, TS: 1538885556887217629, IP: 172.22.156.97, ST: 1
idx: 5, TS: 1538885782528985904, IP: 172.22.156.96, ST: 1
idx: 6, TS: 1538885794072175076, IP: 172.22.158.96, ST: 1
idx: 7, TS: 1538885805420036457, IP: 172.22.156.98, ST: 1
idx: 8, TS: 1538885809915011457, IP: 172.22.158.95, ST: 1
idx: 9, TS: 1538885815295645868, IP: 172.22.154.98, ST: 1
------------------------------------------
showid
Member (1538885805420036457, 172.22.156.98)
leave
showlist
------------------------------------------
Size: 0
------------------------------------------The distributed grep we implemented before in MP1 can be pretty helpful for our MP2 debug. We have a log file for membership service named ssms.log on each machine and first config the log file path in the configuration of our MP1 project dist-grep. Then start all of the grep servers.
Now we can do our distributed grep to get logs of different level(INFO/DEBUG/ERROR) or any pattern we want.
For example, we run dist-grep to query certain pattern "Failure" and then cut some other field in the terminal output.
Colearos-MacBook-Pro:client colearolu$ ./client -E "Failure"
...
/home/kechenl3/go/src/ssms/ssms.log:179715:[INFO]: **172.22.156.95** 2018/10/06 22:53:57.505187 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:181777:[INFO]: **172.22.156.95** 2018/10/06 22:55:49.535837 [Failure Detected](172.22.158.96, 1538884255618504178) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:183354:[INFO]: **172.22.156.95** 2018/10/06 22:57:12.381011 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:183362:[INFO]: **172.22.156.95** 2018/10/06 22:57:12.748437 [Failure Detected](172.22.156.98, 1538884212443213196) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:183369:[INFO]: **172.22.156.95** 2018/10/06 22:57:12.963459 [Failure Detected](172.22.158.96, 1538884255618504178) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:183940:[INFO]: **172.22.156.95** 2018/10/06 22:57:39.253977 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:183962:[INFO]: **172.22.156.95** 2018/10/06 22:57:40.209842 [Failure Detected](172.22.156.98, 1538884212443213196) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:184368:[INFO]: **172.22.156.95** 2018/10/06 22:57:57.235161 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by self
/home/kechenl3/go/src/ssms/ssms.log:184394:[INFO]: **172.22.156.95** 2018/10/06 22:57:57.961417 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:184401:[INFO]: **172.22.156.95** 2018/10/06 22:57:58.160136 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:184405:[INFO]: **172.22.156.95** 2018/10/06 22:57:58.237876 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:184412:[INFO]: **172.22.156.95** 2018/10/06 22:57:58.281611 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:184417:[INFO]: **172.22.156.95** 2018/10/06 22:57:58.352931 [Failure Detected](10.193.185.82, 1538884370872997000) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:184466:[INFO]: **172.22.156.95** 2018/10/06 22:58:00.628350 [Failure Detected](10.193.185.82, 0) Failed, detected by self
/home/kechenl3/go/src/ssms/ssms.log:184570:[INFO]: **172.22.156.95** 2018/10/06 22:58:05.628733 [Failure Detected](10.193.185.82, 0) Failed, detected by self
/home/kechenl3/go/src/ssms/ssms.log:184663:[INFO]: **172.22.156.95** 2018/10/06 22:58:10.629083 [Failure Detected](10.193.185.82, 0) Failed, detected by self
/home/kechenl3/go/src/ssms/ssms.log:184770:[INFO]: **172.22.156.95** 2018/10/06 22:58:15.629470 [Failure Detected](10.193.185.82, 0) Failed, detected by self
/home/kechenl3/go/src/ssms/ssms.log:190053:[INFO]: **172.22.156.95** 2018/10/06 23:17:15.579240 [Failure Detected](172.22.156.98, 1538885805420036457) Failed, detected by others
/home/kechenl3/go/src/ssms/ssms.log:198863:[INFO]: **172.22.156.95** 2018/10/06 23:25:27.151470 [Failure Detected](172.22.154.98, 1538885815295645868) Failed, detected by self
/home/kechenl3/go/src/ssms/ssms.log:1330
Total Connected VMs: 10
Total Counts: 13767
Total Time: 0.242 seconds