Please tell me the procedure for installing bitcoin full node in CUI on CentOS I am really sorry, please teach.
Please tell me the procedure for installing bitcoin full node in CUI on CentOS.
Currently I installed using the following procedure, but I got an error in RPC authentication.

1.
$ sudo yum install wget

2.
$ sudo wget https://bitcoin.org/bin/bitcoin-core-0.17.1/bitcoin-0.17.1-x86_64-linux-gnu.tar.gz

3.
$ sudo wget https://bitcoin.org/bin/bitcoin-core-0.17.1/SHA256SUMS.asc

4.
$ sudo wget https://bitcoin.org/laanwj-releases.asc

5.
$ sudo gpg --import laanwj-releases.asc

6.
$ sudo tar -zxvf bitcoin-0.17.1-x86_64-linux-gnu.tar.gz

7.
$ sudo install -m 0755 -o USER_NAME -g root -t /usr/local/bin bitcoin-0.17.1/bin/*

8.
$ mkdir ~/.bitcoin

9.
$ vi ~/.bitcoin/bitcoin.conf


Enter the following with vi and save.


mainnet = 1
txindex = 1
server = 1
rest = 1
rpcuser = a
rpcpassword = a
rpcport = 8332


11.
$ cd /DATA_DIR

12.
$ sudo mkdir bitcoin

13.
$ sudo chmod -R 777 bitcoin/

14.
$ bitcoind -daemon -datadir=/DATA_DIR/bitcoin -conf=/.bitcoin/bitcoin.conf

Bitcoin server starting

15.
$ bitcoin-cli getbalance

After this, the following URL error will occur.
error: Authorization failed: Incorrect rpcuser or rpcpassword

error: Authorization failed: Incorrect rpcuser or rpcpassword

Which procedure is wrong and how do I fix it?
I am really sorry, please teach.
In your bitcoin.conf, remove the spaces before and after the equals (=) sign. I believe the conf file parser does not handle spaces well.

Also, your command has -conf=/.bitcoin/bitcoin.conf, but your conf file is at ~/.bitcoin/bitcoin.conf so it is pointing to the wrong location.