Can not connect to rpc server bitcoind 0.16

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

mmo2112

Posted 2019-08-16T08:57:08.740

Reputation: 13

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 – 2019-08-16T09:15:42.113

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 – 2019-08-16T09:32:45.757

try to run the bitcoind -rpcport=18888 -rpcuser=... -rpcpassword=.. if worked the problem is the link to bitcoin.cong – vincenzopalazzo – 2019-08-16T09:37:42.807

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 – 2019-08-16T09:49:14.250

@vincenzopalazzo, detail there: https://pastebin.com/smdNiq5K

– mmo2112 – 2019-08-16T10:00:21.833

In your logs doesn't exist any error, right? the bitcoind running – vincenzopalazzo – 2019-08-16T10:05:41.503

Let us continue this discussion in chat.

– mmo2112 – 2019-08-16T10:11:12.270

Can not connect to rpc server bitcoind 0.16

No answers