老师您好，在练习使用Maxscale过程中，执行如下命令：

[root@host12 etc]# maxscale --config=/etc/maxscale.cnf
Syslog logging is disabled.

然后执行：

[root@host12 ~]# maxadmin --user=admin --password=mariadb
MaxScale> list servers
Servers.
-------------------+-----------------+-------+-------------+--------------------
Server             | Address         | Port  | Connections | Status              
-------------------+-----------------+-------+-------------+--------------------
server1            | 192.168.1.107   |  3306 |           0 | Auth Error, Down
server2            | 192.168.1.111   |  3306 |           0 | Auth Error, Down
server3            | 192.168.1.112   |  3306 |           0 | Auth Error, Down
-------------------+-----------------+-------+-------------+--------------------

请教一下，上表中"Auth Error, Down"是什么意思？我的三台MySQL都是运行着的，没有Down，为何会提示Down呢？

我的配置文件如下：

[maxscale]
threads=auto               #开启线程个数，默认为1.设置为auto会同cpu核数相同  
ms_timestamp=1             #timestamp精度  
syslog=1                   #将日志写入到syslog中    
maxlog=1                   #将日志写入到maxscale的日志文件中  
log_to_shm=0               #不将日志写入到共享缓存中，开启debug模式时可打开加快速度  
log_warning=1              #记录告警信息  
log_notice=1               #记录notice  
log_info=1                 #记录info  
log_debug=0                #不打开debug模式  
log_augmentation=1         #日志递增  
#相关目录设置  
logdir=/maxscale/log/  
datadir=/maxscale/data/  
libdir=/usr/lib64/maxscale/  
cachedir=/maxscale/cache/  
piddir=/maxscale/pid/  
execdir=/usr/bin/  


[MySQL Monitor]
type=monitor
module=mysqlmon
servers=server1,server2,server3
user=scalemon
passwd=654321
monitor_interval=1000
#backend_connect_timeout=
#backend_read_timeout=
#backend_write_timeout=
#detect_replication_lag=
#detect_stale_master=


#[qla]
#type=filter
#module=qlafilter
#options=/tmp/QueryLog

#[fetch]
#type=filter
#module=regexfilter
#match=fetch
#replace=select

#[hint]
#type=filter
#module=hintfilter


#[Read Connection Router]
#type=service
#router=readconnroute
#servers=server1,server2,server3
#user=myuser
#passwd=mypwd
#router_options=slave

[RW Split Router]
type=service
router=readwritesplit
servers=server1,server2,server3
user=maxscale
passwd=654321
max_slave_connections=100%


#[Debug Interface]
#type=service
#router=debugcli

[CLI]
type=service
router=cli


#[Read Connection Listener]
#type=listener
#service=Read Connection Router
#protocol=MySQLClient
#address=192.168.100.102
#port=4008
#socket=/var/lib/maxscale/readconn.sock

[RW Split Listener]
type=listener
service=RW Split Router
protocol=MySQLClient
port=4006
#socket=/var/lib/maxscale/rwsplit.sock
# 读写分离端口，应用连接这个端口
#
#[Debug Listener]
#type=listener
#service=Debug Interface
#protocol=telnetd
#address=127.0.0.1
#port=4442

[CLI Listener]
type=listener
service=CLI
protocol=maxscaled
port=6603
# MaxScale后台管理端口


[server1]
type=server
address=192.168.1.107
port=3306
protocol=MySQLBackend

[server2]
type=server
address=192.168.1.111
port=3306
protocol=MySQLBackend

[server3]
type=server
address=192.168.1.112
port=3306
protocol=MySQLBackend

劳烦老师帮忙解答一下，多谢！