dell服务器idrac初始化错误

R620服务器中，比较经常出现idrac无法连接，或者连接用户数超限的问题，有几个方法可以尝试下：
1、
升级idrac卡的firmware
该版本的bug
fix中提到过一点：
?
Fix
for
issues
that
cause
iDRAC7
sluggish
responsiveness
after
a
prolonged
period
of
time
(approx.
45-100
days,
depending
on
the
usage).
In
some
cases,
if
the
iDRAC
is
not
reset,
the
iDRAC
may
become
unresponsive
and
requires
a
server
AC
Power
on
reset.
This
issue
was
introduced
in
firmware
release
1.50.50
and
fixed
in
1.56.55.
该版本解决了idrac启动45-100天后可能出现无法响应的问题。
2、
杀掉超时连接会话
有2个方法：
a.
重启bmc卡
执行命令：
ipmitool
mc
reset
cold
即可，将bmc卡重启后，所有的session都会重置释放。
b.
杀掉超时会话
前提是，允许bmc卡通过网络远程连接
ipmitool
lan
set
1
access
on
或者在下面这个地方启用
iDRAC
设置
=>
服务
=>
VNC
服务器
=>
超时
或者在idrac卡的下面这个地方设置：
iDRAC
设置
=>
网络
=>
IPMI
设置
=>
启用
LAN
上的
IPMI
同时，建议把web
server及ssh服务的timeout值适当调低：
iDRAC
设置
=>
服务
=>
Web
Server
=>
超时
iDRAC
设置
=>
服务
=>
SSH
=>
超时
iDRAC
设置
=>
服务
=>
Telnet
=>
超时
iDRAC
设置
=>
服务
=>
VNC
服务器
=>
超时
利用
racadm
工具（racadm工具的安装自行搞定）关闭超时会话，首先可以查看当前的会话连接情况，例如：
[
15:41:10-root@fzdm-10-59-xx-xx:~
]#racadm
-r
10.59.xx.xx
-uroot
-p”xx”
getssninfo
Security
Alert:
Certificate
is
invalid
?
self
signed
certificate
Continuing
execution.
Use
-S
option
for
racadm
to
stop
execution
on
certificate-related
errors.
SSNID
Type
User
IP
Address
Login
Date/Time
—————————————————————————
20
SSH
root
10.5.xx.xx
11/18/2014
15:38:43
25
GUI
root
10.5.xx.xx
11/18/2014
15:40:27
28
RACADM
root
10.59.xx.xx
11/18/2014
15:41:17
29
SSH
root
10.59.xx.xx
11/18/2014
15:41:18
再执行下面的命令，关闭超时会话连接
[
15:40:52-root@fzdm-10-59-xx-xx:~
]#racadm
-r
10.59.xx.xx
-uroot
-p”xx”
closessn
-i
25
Security
Alert:
Certificate
is
invalid
?
self
signed
certificate
Continuing
execution.
Use
-S
option
for
racadm
to
stop
execution
on
certificate-related
errors.
Session
19
closed
successfully.