Vmware
- VMware ESXi开启snmpd

Vmware

vmware trunk:VST - Virtual Switch Tagging

通过在虚拟交换机中配置多个port group对应多个vlan, 物理交换机启动trunk
优点:VMware推荐的方式,可以在ESXi的一个物理端口支持多个vlan
缺点: 配置比较复杂
物理交换机配置: switchport trunk encap dot1q
虚拟交换机(vSwitch)配置: 在ESXi "Configuration" - "Networking" 中选择相应的vSwitch, 在属性中添加多个port group, 每个port group的vlan id对应一个vlan
虚拟机(vm)配置: 无

Host power management causes problems with guest timekeeping on Linux hosts (1591)
VMwareCLI命令参考

hpet1: lost 1 rtc interrupts

Feb  9 23:30:01 tsplb1 kernel: hpet1: lost 1 rtc interrupts
Feb 10 10:30:02 tsplb1 kernel: hpet1: lost 7 rtc interrupts
Feb 10 21:30:02 tsplb1 kernel: hpet1: lost 3 rtc interrupts

If anyone ever comes across this, I have found a resolution. It's VMWare causing these error messages.
If I simple enter "host.useFastClock = FALSE" into /etc/vmware/config, it stops the message.

http://www.linuxforums.org/forum/ubuntu-linux/143796-rtc-lost-interrupts-flooding-var-log-kern-log-messages.html

在VMware ESXi服务器上配置NAT上网:http://www.it165.net/os/html/201309/6206.html
- MONOWALL:
  - m0n0wall 是一个完整的、嵌入式的防火墙软件包，该软件包可以安装于嵌入式PC里。
  - http://blog.sina.com.cn/s/blog_49f7c320010005vy.html
  - http://m0n0.ch/

VMware ESXi开启snmpd

VMware ESXi 5.0启用snmpd服务

ssh root@172.16.16.10                          #ssh登录vmware主机
#修改snmp.xml配置
cp /etc/vmware/snmp.xml /etc/vmware/snmp.xml.bak
echo "<config><snmpSettings><enable>true</enable><communities>mysnmpd</communities><targets></targets></snmpSettings></config>">/etc/vmware/snmp.xml
/sbin/services.sh restart
exit                                           # 退出登录

VMware ESXi 5.1启用snmpd服务

ssh root@172.16.16.10                          #ssh登录vmware主机
esxcli system snmp set --enable true           #允许启用snmp服务
esxcli system snmp set --communities mysnmpd #设置snmp 服务团体字，建议设置复杂些。
exit                                           # 退出登录

# http://blogs.vmware.com/vsphere/2012/11/configuring-snmp-v1v2cv3-using-esxcli-5-1.html

vSphere中设置
- 配置->安全配置文件->服务：设置服务启动级别(ESXi 5.0无snmpd项，不用设置。)
- 配置->安全配置文件->防火墙：设置允许访问SNMPd服务的IP段

测试snmp访问

snmpwalk -v 2c -c mysnmpd 192.168.0.180 system