postgres$ repmgr -f /data/repmgr.conf primary register  -F
INFO: connecting to primary database...
ERROR: connection to database failed
DETAIL:
fe_sendauth: no password supplied

DETAIL: attempted to connect using:
user=repmgr connect_timeout=20 dbname=repmgr host=172.37.41.157 fallback_application_name=repmgr options=-csearch_path=

解决方法：

1.在postgres用户下创建.pgpass密码文件
su - postgres
cd ~/

vi .pgpass
#hostname:port:database:username:password
192.168.122.111:5432:repmgr:repmgr:123456



.pgpass文件权限必须是0600
chmod 0600 .pgpass


2.修改repmgr.conf

vim repmgr.conf
#添加以下内容
passfile='/home/postgres/.pgpass'




重新注册就可成功