Fullnode not able to sync with NTP server - Google VPS


  • Reward

    Hi Dev team,

    My fullnodes on google VPS have been going down multiple times a day since the upgrade to 1.2.1 and 1.2.2. When I connect to the IPC, I see that the nodes are having a difficulty syncing with the ntp server.

    EROR[01-15|15:30:53] can not get ntp server time: read udp 10.140.0.2:48614->114.118.7.163:123: i/o timeout module=ntp

    Due to that, they are considered 'not alive' even though they are syncing the blocks. Restarting gvite is the only option but is not viable.

    Can you please check and provide a solution for this?


  • Reward

    Similar messages are coming on a different VPS as well. Checked just now:

    -> vite.ledger_getSnapshotChainHeight();
    {"jsonrpc":"2.0","id":3,"method":"ledger_getSnapshotChainHeight","params":[]}
    DBUG[01-16|08:21:19] msg="sending {"jsonrpc":"2.0","id":3,"method":"ledger_getSnapshotChainHeight","params":[]}"
    {"jsonrpc":"2.0","id":3,"result":"3682878"}
    "{"id":0,"jsonrpc":"2.0","result":"3682878"}"
    -> EROR[01-16|08:21:20] can not get ntp server time: read udp 178.128.208.192:41187->203.107.6.88:123: i/o timeout module=ntp
    EROR[01-16|08:21:30] can not get ntp server time: read udp 178.128.208.192:42092->203.107.6.88:123: i/o timeout module=ntp
    EROR[01-16|08:21:40] can not get ntp server time: read udp 178.128.208.192:42906->203.107.6.88:123: i/o timeout module=ntp

    Would this also cause the sync to go slower if the node does not go down fully?


  • Reward

    We have located the uptime problem for google vps. Expect a fix in the next gvite release soon!


  • Reward

    @Allen said in Fullnode not able to sync with NTP server - Google VPS:

    We have located the uptime problem for google vps. Expect a fix in the next gvite release soon!

    So there was something specific for Google? I saw the ntp message on digital ocean droplet as well (second post). That node did not unsync though...


  • Reward

    It has nothing to do with the ntp service but just somehow google's vps got unstable connection to our wss server. I can give you a hotfix file in case you would like to see the result before the formal release.


  • Reward

    @Allen said in Fullnode not able to sync with NTP server - Google VPS:

    It has nothing to do with the ntp service but just somehow google's vps got unstable connection to our wss server. I can give you a hotfix file in case you would like to see the result before the formal release.

    Yes please! I'd like to try it out on one node! 🙂

    Thank you!


  • Reward

    Everything seems to be stable till now. No unsynced node yet. 🙂


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