I wanted to make my life easier when the disaster will hit (and between you and me it allays a meter of time) so I wrote a menu driven disaster recovery script.
The script is covering:
- Pool Master failure
- Host Member Failure
- resetting the power state of VM's
- Recovering them to another HOST
You will need 2 more files that create your environment:
- host_list.txt - all the hosts and their role, one each line. example: [servername, member]
- vm_list.txt - all the vm
Note: in host_list.txt the role should be in lower letters (member/master)
To help you I saved it also as a GoogleDoc.
Any comments/improvements will be welcomed...
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Echo off
title "Xen Recover for 5.5 - at any time hit Cntrl+C and then Y to exit the script."
set user=[]
set password=[]
set server=[]
cls
echo This is a disaster recover script for Xen Server.
echo.
echo Host Infrastructure:
for /f "tokens=1,2 delims=," %%A in (Host_list.txt) do (echo Host: %%A - %%B)
echo.
echo Guest Machines:
for /f %%A in (VM_list.txt) do (echo VM: %%A)
echo.
echo.
echo is this OK ? (1-yes)
set /P C=
if %C%==1 goto continue
goto EOF
:continue
cls
echo Good.
echo What do you want to do ?
echo 1 - Recover from pool master failure
echo 2 - Recover from member failure
set /P C=
if %C%==1 goto master_failure
if %C%==2 goto member_failure
:master_failure
echo To which server to you want to transfer the pool master role ? (IP address only)
set /P C=
echo transfer pool master to %C%
pause
echo pool move to %C%
set server=%C%
echo on
"C:\Program Files\Citrix\XenCenter\xe.exe" -s %server% -u %user% -pw %Password% pool-emergency-transition-to-master
"C:\Program Files\Citrix\XenCenter\xe.exe" -s %server% -u %user% -pw %Password% pool-recover-slaves
Echo off
:master_failure_2
echo Type the new pool master server name: (case sensitive)
for /f "tokens=1,2 delims=," %%A in (Host_list.txt) do (
if %%B==member (echo Host: %%A)
)
set /P xenhostname=
set caller=master_failure_3
goto check_host
:member_failure_3
if "%host_ok%"=="yes" (goto member_failure_4)
echo The Host name is not on the list
pause
goto member_failure_2
set failed-host=%xenhostname%
goto power_reset
:member_failure
echo Which member server has failed ? (type the name - case sensitive)
echo Showing only members.
for /f "tokens=1,2 delims=," %%A in (Host_list.txt) do (
if %%B==member (echo Host: %%A)
)
echo.
echo It seems that the following host is down:
"C:\Program Files\Citrix\XenCenter\xe.exe" -s %server% -u %user% -pw %Password% host-list host-metrics-live=false params=name-label
set /P xenhostname=
set caller=member_failure_2
goto check_host
:member_failure_2
if "%host_ok%"=="yes" (goto member_failure_3)
echo The Host name is not on the list
pause
goto member_failure
:member_failure_3
set failed-host=%xenhostname%
goto power_reset
:power_reset
echo resetting the power state on the machines that was on the failed host [%failed-host%]
pause
echo get host uuid
"C:\Program Files\Citrix\XenCenter\xe.exe" -s %server% -u %user% -pw %Password% host-list name-label=%xenhostname% --minimal > host_uuid.txt
set /p host_uuid=
echo resetting power on VM's residing on %xenhostname% [uuid=%host_uuid%]
echo on
"C:\Program Files\Citrix\XenCenter\xe.exe" -s %server% -u %user% -pw %Password% vm-reset-powerstate resident-on=%host_uuid% --force --multiple
Echo off
goto VM_recover
:vm_recover
echo Which VM do you need to recover ?
for /f %%A in (VM_list.txt) do (echo %%A)
echo it seems that the following VM's were on the failed host:
"C:\Program Files\Citrix\XenCenter\xe.exe" -s %server% -u %user% -pw %Password% vm-list is-control-domain=false resident-on=%host_uuid% params=name-label
set /P vmname=
set caller=vm_recover_2
goto check_vm
:vm_recover_2
if "%vm_ok%"=="yes" (goto vm_recover_3)
echo The VM name is not on the list...
pause
goto vm_recover
:vm_recover_3
"C:\Program Files\Citrix\XenCenter\xe.exe" -s %server% -u %user% -pw %Password% vm-list name-label=%vmname% --minimal > vm_uuid.txt
set /p vm_uuid=
:vm_recover_4
echo Recover to which HOST ?
for /f %%A in (host_list.txt) do (echo %%A)
echo.
echo Note: %failed-host% has failed and cannot be choosen.
set /P xenhostname=
if "%xenhostname%"==%failed-host% (
echo %failed-host% has failed and cannot be choosen.
goto :vm_recover_4
)
set caller=vm_recover_5
goto check_host
:vm_recover_5
if "%host_ok%"=="yes" (goto vm_recover_6)
echo The HOST name is not on the list...
pause
goto vm_recover_4
:vm_recover_6
"C:\Program Files\Citrix\XenCenter\xe.exe" -s %server% -u %user% -pw %Password% host-list name-label=%E% --minimal > host_uuid.txt
set /p host_uuid=
echo recover %vmname% [%vm_uuid%] on %xenhostname% [%host_uuid%]
echo on
Echo off
echo.
echo Recover another VM ? (1-yes)
set /P C=
if %C%==1 goto vm_recover
goto end
rem *** general functions ***
:check_host
set host_ok=
for /f "tokens=1 delims=," %%A in (Host_list.txt) do (
if "%xenhostname%"=="%%A" (set host_ok=yes)
)
goto %caller%
:check_vm
set vm_ok=
for /f %%A in (vm_list.txt) do (
if "%vmname%"=="%%A" (set vm_ok=yes)
)
goto %caller%
:end
rem *** cleanup ***
del host_uuid.txt /q
del vm_uuid.txt /q
pause
:EOF
echo *** written by snir hoffman http://snirh.blogspot.com ***
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