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通过Shell、Python脚本管理KVM虚拟机

2013-03-05 分类：Linux运维 阅读(256) 评论(0)

一个想法：

1 Python2.7

2 python的web框架 bottle

3 shell脚本管理kvm

组合在一起就可以了~

这段时间我会用bottle 简单的实现管理kvm 主机,开源出去的~ 性能烂的话，别怪我~

管理kvm主机完全可以在页面上完成，国外有个人用django写了这套程序，感觉还不错，只是稍复杂，bug有点多。。。。  个人觉得 自己开写一套简单的，python本身有kvm的库，大家要是觉得麻烦的话，也可以用os模块，调用virsh的命令来管理kvm主机，这完全是可行的~

https://www.webvirtmgr.net/docs/

上面是安装配置的教程

安装好需要的库之后，直接运行就好了

./manage.py runserver 10.96.60.61:8000

 

 

也可以利用这个小脚本，针对虚拟机开机，关机，重启~

用法:

  1. 查看虚拟机列表~
  2. # kvmctl.sh –list
  3. machine1
  4. machine2
  5. machineN
  6. 开启虚拟机
  7. # kvmctl.sh machine2 startd
  8. Starting up ‘machine2’ … (daemon mode)
  9. 虚拟机状态
  10. # kvmctl.sh –show
  11. MACHINE PID STIME TIME
  12. machine1 4856 Feb11 10:34:59
  13. machine2 11155 Mar12 00:05:45
  14. 关闭虚拟机
  15. # kvmctl.sh machine1 stop
  16. Shutting down ‘machine1’ …

 

Config file example:
KVM_M=1G
KVM_HDA=$BASEDIR/$MACHINE/root.qcow2
KVM_HDB=$BASEDIR/$MACHINE/swap.qcow2
KVM_HDC=$BASEDIR/.imgs/mysql.raw
KVM_HDD=$BASEDIR/.imgs/tmp.qcow2
KVM_NET=”nic,macaddr=52:54:00:00:02:52 -net tap”
KVM_PIDFILE=/var/run/192.168.0.249.pid
KVM_TCP_PORT=10000
KVM_MONITOR=”tcp:127.0.0.1:${KVM_TCP_PORT},server,nowait”

KVM_EXTRA=

 

  1. #!/bin/bash
  2. BASEDIR=“/var/local/kvm”
  3. KVM=“/usr/bin/kvm”
  4. KVM_CONFIG=“settings.cfg”
  6. do_help()
  7. {
  8. PROGRAM_NAME=`basename $0`
  9. echo “Usage:”
  10. echo “$PROGRAM_NAME machine (start|startd|stop|monitor|status|settings|edit)”
  11. echo “$PROGRAM_NAME (–help|–list|–show)”
  12. }
  14. if [ $# -eq 0 ]; then
  15. do_help
  16. exit 1
  17. fi
  19. if [ “$1” == “–help” ]; then
  20. do_help
  21. exit 0
  22. fi
  24. if [ “$1” == “–list” ]; then
  25. ls –1 $BASEDIR
  26. exit 0
  27. fi
  29. if [ “$1” == “–show” ]; then
  30. ps -ef | awk -v format=“%-19s %-7s %-7s %s\n” ‘\
  31. BEGIN { \
  32. printf(format,“MACHINE”, “PID”, “STIME”, “TIME”) \
  33. } \
  34. /kvm -name/&&!/awk/ { \
  35. printf(format, $10, $2, $5, $7) \
  36. }’
  37. exit 0
  38. fi
  40. MACHINE=$1
  41. MACHINEDIR=$BASEDIR/$MACHINE
  43. if [ ! -d $MACHINEDIR ]; then
  44. echo -e “Error. (Machine not found at $BASEDIR/)\n”
  45. do_help
  46. exit 1
  47. fi
  49. do_load_settings()
  50. {
  51. if [ -f “$MACHINEDIR/$KVM_CONFIG” ]; then
  52. source $MACHINEDIR/$KVM_CONFIG
  53. else
  54. echo -e “Error. ($MACHINEDIR/$KVM_CONFIG not found)\n”
  56. echo “Example $KVM_CONFIG:”
  57. echo ‘KVM_M=512M’
  58. echo ‘KVM_HDA=$BASEDIR/$MACHINE/root.qcow2’
  59. echo ‘KVM_HDB=$BASEDIR/.imgs/swap.qcow2’
  60. echo ‘KVM_HDC=$BASEDIR/.imgs/home.qcow2’
  61. echo ‘KVM_HDD=’
  62. echo ‘KVM_NET=”nic,macaddr=52:54:00:00:02:53 -net tap”‘
  63. echo ‘KVM_TCP_PORT=10001’
  64. echo ‘KVM_PIDFILE=/var/run/192.168.0.253.pid’
  65. echo ‘KVM_MONITOR=”tcp:127.0.0.1:${KVM_TCP_PORT},server,nowait”‘
  66. echo ‘KVM_EXTRA=’
  68. exit 1
  69. fi
  70. }
  72. do_check_tcp_port()
  73. {
  74. if [ -z “$1” ]; then
  75. echo “Error. (KVM_TCP_PORT is not set)”
  76. exit 1
  77. fi
  78. }
  80. case “$2”in
  82. start|startd)
  84. do_load_settings
  86. PARAMS=“-name $MACHINE”
  88. [ “$2” == “startd” ] \
  89. && PARAMS=“$PARAMS -vnc none -daemonize” \
  90. && MSG=“(daemon mode)”
  92. [ -n “$KVM_M” ] && PARAMS=“$PARAMS -m $KVM_M”
  93. [ -n “$KVM_HDA” ] && PARAMS=“$PARAMS -hda $KVM_HDA”
  94. [ -n “$KVM_HDB” ] && PARAMS=“$PARAMS -hdb $KVM_HDB”
  95. [ -n “$KVM_HDC” ] && PARAMS=“$PARAMS -hdc $KVM_HDC”
  96. [ -n “$KVM_HDD” ] && PARAMS=“$PARAMS -hdd $KVM_HDD”
  97. [ -n “$KVM_NET” ] && PARAMS=“$PARAMS -net $KVM_NET”
  98. [ -n “$KVM_PIDFILE” ] && PARAMS=“$PARAMS -pidfile $KVM_PIDFILE”
  99. [ -n “$KVM_MONITOR” ] && PARAMS=“$PARAMS -monitor $KVM_MONITOR”
  101. [ -n “$KVM_EXTRA” ] && PARAMS=“$PARAMS $KVM_EXTRA”
  103. echo “Starting up ‘$MACHINE’ … $MSG”
  104. $KVM $PARAMS
  106. [ $? -ne 0 ] \
  107. && echo “Error. (Couldn’t run KVM)”
  108. ;;
  110. stop)
  112. do_load_settings
  113. do_check_tcp_port $KVM_TCP_PORT
  115. echo “Shutting down ‘$MACHINE’ …”
  116. echo “system_powerdown” | nc 127.0.0.1 $KVM_TCP_PORT &>/dev/null
  118. if [ $? -ne 0 ]; then
  119. echo “Error. (Couldn’t connect. Is the machine up?)”
  120. exit 1
  121. fi
  123. ;;
  125. monitor)
  127. do_load_settings
  128. do_check_tcp_port $KVM_TCP_PORT
  130. echo “Starting Monitor for ‘$MACHINE’… (Ctrl+C to exit)”
  131. nc 127.0.0.1 $KVM_TCP_PORT
  133. ;;
  135. status)
  137. do_load_settings
  138. do_check_tcp_port $KVM_TCP_PORT
  140. INFO=“info status\ninfo kvm\ninfo network”
  142. echo -e $INFO | nc -w 1127.0.0.1 $KVM_TCP_PORT \
  143. && echo “”
  145. if [ $? -ne 0 ]; then
  146. echo “Error. (Couldn’t connect. Is the machine up?)”
  147. exit 1
  148. fi
  150. ;;
  152. settings)
  154. do_load_settings
  155. cat $MACHINEDIR/$KVM_CONFIG
  157. ;;
  159. edit)
  161. if [ -z “$EDITOR” ]; then
  162. echo “Error. (EDITOR is not set)”
  163. exit 1
  164. fi
  166. do_load_settings
  168. if [ -n “$KVM_PIDFILE” -a -f “$KVM_PIDFILE” ]; then
  169. echo -n “Warning! ‘$MACHINE’ is running. Continue? (y/N) “
  170. read CONTINUE
  172. [ “$CONTINUE” != “y” -a “$CONTINUE” != “Y” ] \
  173. && exit 1
  175. fi
  177. $EDITOR $MACHINEDIR/$KVM_CONFIG
  179. ;;
  181. *)
  182. do_help
  183. exit 1
  184. ;;
  186. esac
  188. exit 0
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