Centos7 FreeRadius 启动失败 Job for radiusd.service failed because the control process exited with error

[root@101-103 system]# systemctl start radiusd.service
Job for radiusd.service failed because the control process exited with error code. See "systemctl status radiusd.service" and "journalctl -xe" for details.
[root@101-103 system]# systemctl status radiusd.service
● radiusd.service - FreeRADIUS high performance RADIUS server.
   Loaded: loaded (/usr/lib/systemd/system/radiusd.service; enabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 四 2020-11-19 15:26:38 CST; 8s ago
  Process: 4505 ExecStart=/usr/sbin/radiusd -d /etc/raddb (code=exited, status=1/FAILURE)
  Process: 4500 ExecStartPre=/usr/sbin/radiusd -C (code=exited, status=0/SUCCESS)
  Process: 4498 ExecStartPre=/bin/chown -R radiusd.radiusd /var/run/radiusd (code=exited, status=0/SUCCESS)

Thu Nov 19 15:19:16 2020 : Info: rlm_sql_mysql: libmysql version: 5.5.60-MariaDB
Thu Nov 19 15:19:16 2020 : Info: rlm_sql (sql): Attempting to connect to database "radiusdb"
Thu Nov 19 15:19:16 2020 : Info: rlm_sql (sql): Opening additional connection (0), 1 of 32 pending slots used
Thu Nov 19 15:19:16 2020 : Error: rlm_sql_mysql: Couldn't connect to MySQL server dbuser@localhost:radiusdb
Thu Nov 19 15:19:16 2020 : Error: rlm_sql_mysql: MySQL error: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (13)
Thu Nov 19 15:19:16 2020 : Error: rlm_sql (sql): Opening connection failed (0)
Thu Nov 19 15:19:16 2020 : Error: /etc/raddb/mods-enabled/sql[20]: Instantiation failed for module "sql"

vim /etc/raddb/mods-available/sql

        # The dialect of SQL you want to use, this should usually match
        # the driver you selected above.
        #
        # If you're using rlm_sql_null, then it should be the type of
        # database the logged queries are going to be executed against.
        dialect = "mysql"

        # Connection info:
        #
        server = "127.0.0.1"