官方文档：
http://folk.uio.no/trondham/software/check_openmanage.html#download

1、dell服务器上安装：
http://linux.dell.com/repo/hardware/latest/
http://linux.dell.com/repo/hardware/dsu/

wget -q -O - http://linux.dell.com/repo/hardware/latest/bootstrap.cgi|/bin/bash
yum update
yum install srvadmin-all net-snmp
yum install srvadmin-base net-snmp

2、启动omsa：

/opt/dell/srvadmin/sbin/srvadmin-services.sh start
/opt/dell/srvadmin/sbin/srvadmin-services.sh enable

3、修改snmpd.conf
vi /etc/snmp/snmpd.conf

#SET SNMP _BEGIN_
com2sec notConfigUser  default       readonly
group   notConfigGroup v1           notConfigUser
group   notConfigGroup v2c           notConfigUser
view    systemview    included   .1
access  notConfigGroup ""      any       noauth    exact  systemview none none
syslocation BJ
syscontact admin (admin@bj.com)
dontLogTCPWrappersConnects yes
smuxpeer .1.3.6.1.4.1.674.10892.1
#SET SNMP _END_

4、重启snmp服务并验证

service snmpd restart
snmpwalk -v 1 -c readonly 127.0.0.1|head

check mk 选择snmp然后重新scan