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I have 2 server v0.18 and 0.16. They're nearly same config but I can't connect to v0.16 server via RPC though using command on it is still well eg bitcoin-cli -info.
I have searched few configs and none of them are useful for my case, please help me check this config, thanks so much. v0.16 can not connect:

datadir=/data/bitcoind
debuglogfile=/var/log/bitcoin_testnet.log
dbcache=1000
txindex=1
server=1
rpcuser=...
rpcpassword=...
rpcport=18888
port=18887
daemon=1
testnet=1
rpcallowip=0.0.0.0/0

[test]
rpcbind=0.0.0.0

walletnotify=/data/bitcoind/bitcoind_walletnotify.sh %s
blocknotify=/data/bitcoind/bitcoind_blocknotify.sh %s


I have tried to drop rpcbind=0.0.0.0 and port but it's not worked. Example on my other server v0.18 can connect via RPC well:

server=1
testnet=1
txindex=1
dbcache=2048

rpcallowip=0.0.0.0/0    
rpcuser=...
rpcpassword=...

datadir=/data/blockchain/bitcoin/
debuglogfile=/var/log/bitcoin.log

# Limit 25 transactions
#limitdescendantcount=300
#limitancestorcount=300

[test]
rpcport=18332
rpcbind=0.0.0.0

#[regtest]
# Notify when receiving coins
walletnotify=/data/blockchain/bitcoin/bitcoin_walletnotify.sh %s
blocknotify=/data/blockchain/bitcoin/bitcoin_blocknotify.sh %s
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7
  • If you run the version 0.16 with the default configuration work? I think could be the port of the node with the version 0.16 is locked
    – vincenzopalazzo
    Aug 16, 2019 at 9:15
  • I try to switch other port but on log is always failed: 2019-08-16 09:22:23 Binding RPC on address :: port 18991 failed., same to default bitcoind - daemon.
    – mmo2112
    Aug 16, 2019 at 9:32
  • try to run the bitcoind -rpcport=18888 -rpcuser=... -rpcpassword=.. if worked the problem is the link to bitcoin.cong
    – vincenzopalazzo
    Aug 16, 2019 at 9:37
  • bitcoind -daemon -debug=rpc -debug=mempool -rpcuser=btcrpc -rpcpassword=... -rpcport=18991 -rpcbind=0.0.0.0 -rpcallowip=0.0.0.0/0 -testnet -server -debuglogfile=/var/log/bitcoin_testnet.log, no binding port failed anymore but I still can not connect. :-(
    – mmo2112
    Aug 16, 2019 at 9:49
  • @vincenzopalazzo, detail there: pastebin.com/smdNiq5K
    – mmo2112
    Aug 16, 2019 at 10:00

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