Errors & Troubleshooting
Answer
You can find a log file in data directory. For example, default location of a log for
kcnd
is /var/log/kcnd/kcnd.out
when you install kcnd
RPM package.ERROR[01/27,17:11:33 +09] [33] Protocol istanbul/64 failed id=b10697e43d4f8e30 conn=staticdial err="Genesis block mismatch - 81cf117d44f99b21 (!= 74647b98b9f06cb4)"
Answer
This error can happen when
genesis.json
is differ. Please stop Klaytn node and remove data directory. Then run ken init
again using correct genesis.json
as below.For example, when data directory is
/var/kend/data
.sudo kend stop
sudo rm -rf /var/kend/data
sudo ken init --datadir /var/kend/data genesis.json
sudo kend start
Error: Returned error: The method net_version does not exist/is not available
at Object.ErrorResponse (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3-eth/~/web3-core-helpers/src/errors.js:29:1)
at /usr/local/lib/node_modules/truffle/build/webpack:/~/web3-eth/~/web3-core-requestmanager/src/index.js:140:1
at /usr/local/lib/node_modules/truffle/build/webpack:/packages/truffle-provider/wrapper.js:112:1
at XMLHttpRequest.request.onreadystatechange (/usr/local/lib/node_modules/truffle/build/webpack:/~/web3/~/web3-providers-http/src/index.js:96:1)
at XMLHttpRequestEventTarget.dispatchEvent (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2-cookies/dist/xml-http-request-event-target.js:34:1)
at XMLHttpRequest._setReadyState (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2-cookies/dist/xml-http-request.js:208:1)
at XMLHttpRequest._onHttpResponseEnd (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2-cookies/dist/xml-http-request.js:318:1)
at IncomingMessage.<anonymous> (/usr/local/lib/node_modules/truffle/build/webpack:/~/xhr2-cookies/dist/xml-http-request.js:289:47)
at IncomingMessage.emit (events.js:194:15)
at endReadableNT (_stream_readable.js:1125:12)
at process._tickCallback (internal/process/next_tick.js:63:19)
Answer
Enable
net
and other API for RPC console by editing kend.conf
file as below.RPC_API="admin,debug,klay,miner,net,personal,rpc,txpool,web3" # available apis: admin,debug,klay,miner,net,personal,rpc,txpool,web3
After updating
kend.conf
, restart Klaytn node.Failed to start kcnd.service: Unit not found.
Answer
Please reload daemon as below.
sudo systemctl daemon-reload
INFO[02/20,12:35:34 Z] [21] [Dial] Add dial candidate from static nodes id=7eaa1e3136fd16a3 addr=13.209.225.108:32323
...
INFO[02/20,12:35:38 Z] [21] [Dial] Add dial candidate from static nodes id=7eaa1e3136fd16a3 addr=13.209.225.108:32323
Answer
This can happen when
genesis.json
and nodekey/validator information differ. Please check nodekey/validator and genesis.json
file again.Fatal: Error starting protocol stack: listen unix /Users/username/some_directory/more_directories/klaytn/klaytn_client/my_test_klaytn/data/dd/klay.ipc: bind: invalid argument
Answer
If you see the above protocol stack error message in the log file, it means Klaytn failed to start because the full path name of current working directory is too long. Please launch a Klaytn node with a shorter full data directory. The maximum allowed length of path name depends on operating system.
ERROR[01/28,06:20:07 Z] [23] Protocol istanbul/64 failed id=845f596536450bad conn=staticdial err="InvalidPeerHierarchy - (PeerIsOnParentChain:false) == (OnChildChain:false)"
Answer
It could happen when genesis of mainchain and service chain differ. Please check genesis of both chain are same.
"ERROR[06/21,14:35:16 +09] [5] Head state missing, repairing chain number=2955620 hash=66bba2…e15f8d
Fatal: Error starting protocol stack: rewound to block number 0, but repair failed"
Answer Due to a compatibility issue, we strongly recommend to upgrade EN's binary to v0.9.6 if you have been running an EN with older versions (<= v0.8.2). If it is your first time upgrading the EN to v0.9.x and want to migrate the data from the older version, you must specify the option
ADDITIONAL="--db.num-statetrie-partitions 1"
in the configuration file when you install the newer version.Last modified 10mo ago