Testing the Installation

It is time to check that Endpoint Node is successfully installed and it is working as expected after installation.

Process Status

It is possible to check the status of EN's process using the status commands systemctl and kend.

systemctl

systemctl is installed along with the RPM, and the status of EN can be checked as follows.

$ systemctl status kend.service
● kend.service - (null)
   Loaded: loaded (/etc/rc.d/init.d/kend; 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/kend start (code=exited, status=0/SUCCESS)
 Main PID: 29641 (ken)
   CGroup: /system.slice/kend.service
           └─29641 /usr/local/bin/ken --networkid 1000 --datadir /kend_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 kend[29636]: Starting kend: [  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.

kend

kend is installed along with the package, and the status of EN can be checked as follows.

$ kend status
kend is running

Logs

The log is stored in kend.out file located in the path defined in the LOG_DIR field of the kend.conf file. When the node works properly, you can see that each block is imported per second as follows.

Example:

$ tail kend.out
INFO[02/13,07:02:24 Z] [35] Commit new mining work                    number=11572924 txs=0 elapsed=488.336µs
INFO[02/13,07:02:25 Z] [5] Imported new chain segment                blocks=1 txs=0 mgas=0.000     elapsed=1.800ms   mgasps=0.000       number=11572924 hash=f46d09…ffb2dc cache=1.59mB
INFO[02/13,07:02:25 Z] [35] Commit new mining work                    number=11572925 txs=0 elapsed=460.485µs
INFO[02/13,07:02:25 Z] [35] 🔗 block reached canonical chain           number=11572919 hash=01e889…524f02
INFO[02/13,07:02:26 Z] [14] Committed                                 address=0x1d4E05BB72677cB8fa576149c945b57d13F855e4 hash=1fabd3…af66fe number=11572925
INFO[02/13,07:02:26 Z] [5] Imported new chain segment                blocks=1 txs=0 mgas=0.000     elapsed=1.777ms   mgasps=0.000       number=11572925 hash=1fabd3…af66fe cache=1.59mB
INFO[02/13,07:02:26 Z] [35] Commit new mining work                    number=11572926 txs=0 elapsed=458.665µs
INFO[02/13,07:02:27 Z] [14] Committed                                 address=0x1d4E05BB72677cB8fa576149c945b57d13F855e4 hash=60b9aa…94f648 number=11572926
INFO[02/13,07:02:27 Z] [5] Imported new chain segment                blocks=1 txs=0 mgas=0.000     elapsed=1.783ms   mgasps=0.000       number=11572926 hash=60b9aa…94f648 cache=1.59mB
INFO[02/13,07:02:27 Z] [35] Commit new mining work

Queries

ken console

Klaytn provides a CLI client: ken console. Another way of using the client is to connect to the process via IPC (inter-process communication). The IPC file klay.ipc is located in the data directory on an EN.

Please execute the following command and check out the result.

$ ken attach /var/kend/data/klay.ipc
Welcome to the Klaytn JavaScript console!

instance: Klaytn/vX.X.X/XXXX-XXXX/goX.X.X
 datadir: /var/kend/data
 modules: admin:1.0 debug:1.0 governance:1.0 istanbul:1.0 klay:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0
 >

You can check the usable commands on API Document

The useful APIs to check the status of EN:

• 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.

> klay.blockNumber
11573819

net.peerCount

> net.peerCount
14

The above command line returns the number of nodes that the EN connects to.