我正在尝试为配置单元设置postgresql。这是本书的内容 /var/lib/pgsql/data/pg_hba.conf :

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only

local   all   postgres                                     trust

# IPv4 local connections:

host    all   postgres             127.0.0.1/32            trust

# IPv6 local connections:

host    all   postgres             ::1/128                 trust

# Allow replication connections from localhost, by a user with the

# replication privilege.

# local   replication     postgres                                peer

# host    replication     postgres        127.0.0.1/32            ident

# host    replication     postgres        ::1/128                 ident

local  all  ambari,mapred md5
host  all   ambari,mapred 0.0.0.0/0  md5
host  all   ambari,mapred ::/0 md5

当我检查连接时，我得到错误：

2018-04-15 23:48:49,573 - Check db_connection_check was unsuccessful. Exit code: 1. Message: Apr 15, 2018 11:48:49 PM org.postgresql.core.v3.ConnectionFactoryImpl log
WARNING: SQLException occurred while connecting to master1.local.test.org:5432
org.postgresql.util.PSQLException: FATAL: no pg_hba.conf entry for host "192.168.0.10", user "hive", database "hive", SSL off

我试着给这本书加一行 /var/lib/pgsql/data/pg_hba.conf 并使用 systemctl restart postgresql （centos 7版）：

host   hive   hive     192.168.0.10    trust

但我又犯了一个错误：
postgresql.service的作业失败，因为控制进程退出，错误代码为。有关详细信息，请参阅“systemctl status postgresql.service”和“journalctl-xe”。