systemctl과 kscnd의 status 명령어를 사용하여 SCN의 프로세스 상태를 확인할 수 있습니다.
systemctl
systemctl은 RPM과 함께 설치되며 SCN의 상태는 다음과 같이 확인할 수 있습니다.
$ systemctl status kscnd.service
● kscnd.service - (null)
Loaded: loaded (/etc/rc.d/init.d/kscnd; bad; vendor preset: disabled)
Active: active (running) since Wed 2019-01-09 11:42:39 UTC; 1 months 4 days ago
Docs: man:systemd-sysv-generator(8)
Process: 29636 ExecStart=/etc/rc.d/init.d/kscnd start (code=exited, status=0/SUCCESS)
Main PID: 29641 (kscn)
CGroup: /system.slice/kscnd.service
└─29641 /usr/local/bin/kscn --networkid 1000 --datadir ~/kscnd_home --port 32323 --srvtype fasthttp --metrics --prometheus --verbosity 3 --txpool.global...
Jan 09 11:42:39 ip-10-11-2-101.ap-northeast-2.compute.internal systemd[1]: Starting (null)...
Jan 09 11:42:39 ip-10-11-2-101.ap-northeast-2.compute.internal kscnd[29636]: Starting kscnd: [ OK ]
Jan 09 11:42:39 ip-10-11-2-101.ap-northeast-2.compute.internal systemd[1]: Started (null).
You can check the current status such as Active: active (running) in the example above.
kscnd
kscnd는 패키지와 함께 설치되며 SCN의 상태는 다음과 같이 확인할 수 있습니다.
$ kscnd status
kscnd is running
Logs
로그는 kscnd.out 파일에 저장되어 있고, 이 파일은 kscnd.conf 파일의 LOG_DIR 필드에서 정의된 경로에 있습니다. When the node works properly, you can see that each block is imported per second as follows.
Example:
$ tail -F ~/kscnd_home/logs/kscnd.out
INFO[11/12,10:19:09 +09] [49] Successfully wrote mined block num=11 hash=03da06…f194b0 txs=0
INFO[11/12,10:19:09 +09] [49] Commit new mining work number=12 txs=0 elapsed=236.972µs
INFO[11/12,10:19:10 +09] [24] Committed number=12 hash=470aca…be4fdf address=0xf8690562c0839C44B17AF421F7AaaA9F12dCc62b
INFO[11/12,10:19:10 +09] [49] Successfully sealed new block number=12 hash=470aca…be4fdf
INFO[11/12,10:19:10 +09] [49] Successfully wrote mined block num=12 hash=470aca…be4fdf txs=0
INFO[11/12,10:19:10 +09] [49] Commit new mining work number=13 txs=0 elapsed=198.221µs
INFO[11/12,10:19:11 +09] [24] Committed number=13 hash=95e4a3…14e50f address=0xf8690562c0839C44B17AF421F7AaaA9F12dCc62b
INFO[11/12,10:19:11 +09] [49] Successfully sealed new block number=13 hash=95e4a3…14e50f
INFO[11/12,10:19:11 +09] [49] Successfully wrote mined block num=13 hash=95e4a3…14e50f txs=0
INFO[11/12,10:19:11 +09] [49] Commit new mining work number=14 txs=0 elapsed=220.004µs
INFO[11/12,10:19:12 +09] [24] Committed number=14 hash=dcd2bc…b2aec0 address=0xf8690562c0839C44B17AF421F7AaaA9F12dCc62b
Queries
kscn 콘솔
Klaytn은 kscn console이라는 CLI 클라이언트를 제공합니다. Another way of using the client is to connect to the process via IPC (inter-process communication). klay.ipc IPC 파일은 SCN의 data 디렉토리에 있습니다.
Please execute the following command and check out the result.
$ kscn attach ~/kscnd_home/klay.ipc
Welcome to the Klaytn JavaScript console!
instance: Klaytn/vX.X.X/XXXX-XXXX/goX.X.X
at block: 11573551 (Wed, 13 Feb 2019 07:12:52 UTC)
datadir: ~/kscnd_home
modules: admin:1.0 debug:1.0 istanbul:1.0 klay:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0
>
SCN의 상태를 확인하기 위해 다음의 API를 사용할 수 있습니다.
klay.blockNumber (to get the latest block number)
net.peerCount (to get the number of the connected Klaytn nodes currently)
klay.blockNumber
You can get the latest block number to see if blocks are propagated properly.
