Tag Archive for 'vmware'

VMware ESXi 的VLAN支持

  ESXi主机和交换机用trunk连接,在vSphere Client的主机网络配置中,虚拟机端口组的VLAN ID留空则虚拟机只可访问native VLAN (这里是VLAN 1);如果填写了ID则虚拟机只可访问对应的VLAN;如果ID填写4095则透传trunk,由虚拟机OS来完成VLAN区分(如PROSet)。

以上配置在此环境下测试通过:服务器为IBM X3650,安装ESXi 4.0.0 193498,双网卡均直接连接到6506的WS-X6748-GE-TX,IOS版本:s72033_rp Software (s72033_rp-ADVIPSERVICESK9_WAN-VM), Version 12.2(33)SXI, RELEASE SOFTWARE (fc2)
所有和ESXi主机相连的端口配置如下:
interface GigabitEthernet4/1
switchport
switchport trunk encapsulation dot1q
switchport mode trunk

openSUSE 安装 VMware Tools 之前的准备

  openSUSE 11.1:
  删除/lib/modules/2.6.27.7-9-default/updates中的vmxnet.ko vmblock.ko vmmemctl.ko vmhgfs.ko vmci.ko vmsync.ko 这些文件
  安装make, gcc, kernel-source

  openSUSE 10.3:
  安装less, psmisc, make, gcc, kernel-source

VMware ESXi 4 集群启用 VMware HA 时必须配置合法有效域名

  VMware ESXi 4 集群启用HA时必须给每一台主机配置合法的域名,即主机标示中的[名称].[域]的A记录需指向该主机的IP。否则会出现“无法完成主机上的 HA 代理配置”错误。

VMware ESXi 挂载 iSCSI 和 NFS 性能测试

  iSCSI-target和NFS Server由一台Raid10(4*2.5′ 10Krpm 146GB)的VMware ESXi 3.5里的FreeBSD服务机提供,在另一台Raid1(2*3.5′ 15Krpm 146GB)的VMware ESXi 3.5里挂载iSCSI和NFS,然后分别以虚拟磁盘添加入FreeBSD测试机中。使用/usr/local/bin/iozone -i 0 -i 1 -i 2 -r 1024 -s 1G -t 2 -C测试。测试结果如下:
  iSCSI测试:
Initial write = 5443.42 KB/sec
Rewrite = 4840.85 KB/sec
Read = 19823.13 KB/sec
Re-read = 19298.97 KB/sec
Random read = 44114.65 KB/sec
Random write = 4024.72 KB/sec

  NFS测试:
Initial write = 952.76 KB/sec
Rewrite = 975.36 KB/sec
Read = 14782.20 KB/sec
Re-read = 16085.16 KB/sec
Random read = 41878.42 KB/sec
Random write = 794.31 KB/sec

  CPU占用率上NFS只有iSCSI的一半,服务机和测试机都差不多。iSCSI时CPU占用率为15%左右,中间还有一段是30%多。NFS时基本都8%左右。两台机器均为2*Intel E5405,分配给虚拟机2个核。

  测试机直接加载NFS测试:
Initial write = 2361.99 KB/sec
Rewrite = 2130.92 KB/sec
Read = 17595.85 KB/sec
Re-read = 18904.29 KB/sec
Random read = 13139.79 KB/sec
Random write = 2001.82 KB/sec

  测试机本地测试:
Initial write = 8233.32 KB/sec
Rewrite = 12511.68 KB/sec
Read = 34969.73 KB/sec
Re-read = 34179.26 KB/sec
Random read = 82272.52 KB/sec
Random write = 4620.50 KB/sec

  服务机本地测试:
Initial write = 6236.64 KB/sec
Rewrite = 9016.30 KB/sec
Read = 47051.42 KB/sec
Re-read = 47444.12 KB/sec
Random read = 27243.86 KB/sec
Random write = 3251.88 KB/sec

VMware ESX Server 设置时区与NTP

  安装VMware ESX Server 3.5时,在设置Time Zone Selection页面。首先取消下面的System clock uses UTC复选框,在第一页Map的地图里选择上海,在第二页Location中已经自动选中了Asia/east China – Beijing, Guangdong, Shanghai, etc.,下方的Selected time zone显示也为Asia/east China – Beijing, Guangdong, Shanghai, etc.,然后点击Next。千万不要去第三页UTC Offset去设置UTC+8。

  安装成功后,root登陆进去首先停止NTP服务service ntpd stop,设置NTP服务器ntpdate 192.168.1.1,最后再启动NTP服务service ntpd start。运行date可以看到Mon Jul 28 21:03:03 CST 2008。