{"id":195,"date":"2025-08-18T15:11:21","date_gmt":"2025-08-18T22:11:21","guid":{"rendered":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/?p=195"},"modified":"2025-08-18T15:11:21","modified_gmt":"2025-08-18T22:11:21","slug":"handling-machine-reboots-with-vm-applications","status":"publish","type":"post","link":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/handling-machine-reboots-with-vm-applications\/","title":{"rendered":"Handling Machine Reboots with VM Applications"},"content":{"rendered":"

One confusion around all of our extensions is: how are reboots handled? This varies by extension<\/a>, but only VM Applications provide the option on\u00a0how<\/em> to handle them. It does this via the “scriptBehaviorAfterReboot” property.<\/p>\n

\n
\u00a0\u00a0\u00a0\u00a0“resources”:\u00a0[<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“type”:\u00a0“Microsoft.Compute\/galleries\/applications\/versions”,<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“apiVersion”: “2024-03-03”,<\/strong><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“name”: “[concat(parameters(‘galleries_mygallery_name’), ‘\/’, parameters(‘applicationDefinitionName’), ‘\/’, parameters(‘version’))]”,<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“location”:\u00a0“[parameters(‘resourceLocation’)]”,<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“properties”:\u00a0{<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“publishingProfile”:\u00a0{<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“source”:\u00a0{<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“mediaLink”:\u00a0“[parameters(‘servicePackageLink’)]”<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0},<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“manageActions”:\u00a0{<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“install”:\u00a0“[parameters(‘installScript’)]”,<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“remove”:\u00a0“echo\u00a0\\”Done\\””<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0},<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“settings”:\u00a0{<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“packageFileName”: “[parameters(‘packageFileName’)]”,<\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 “scriptBehaviorAfterReboot”:”Rerun”<\/strong><\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0},<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“enableHealthCheck”:\u00a0false,<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“targetRegions”:\u00a0“[parameters(‘replicationLocations’)]”,<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“replicaCount”:\u00a03,<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“excludeFromLatest”:\u00a0false,<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“storageAccountType”:\u00a0“Standard_ZRS”<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0},<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“safetyProfile”:\u00a0{<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“allowDeletionOfReplicatedLocations”:\u00a0true<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n
\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}<\/div>\n
\u00a0\u00a0\u00a0\u00a0]<\/div>\n<\/div>\n
<\/div>\n
Note that, as above, the API version used must be at least 2024-03-03 for this to work.<\/div>\n
<\/div>\n
Valid values are:<\/div>\n
<\/div>\n
\n\n\n\n\n\n
Value<\/strong><\/td>\nAction<\/strong><\/td>\n<\/tr>\n
None<\/td>\nTake no action after a reboot<\/td>\n<\/tr>\n
Rerun<\/td>\nRun the script again after a reboot<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

There are some things to keep in mind:<\/p>\n

    \n
  • This is currently only enabled for ARM templates. CLI and Powershell have not been updated yet.<\/li>\n
  • If the option “Rerun” is chosen, then it will apply to\u00a0all<\/em> scripts for the application – install, update, and remove.<\/li>\n
  • Your scripts must be idempotent if Rerun is chosen. We currently do not inform the script whether a reboot has just occurred.<\/li>\n
  • After three reboots, we will\u00a0not<\/em> execute the script again even if Rerun is specified. This is to prevent a non-idempotent script from continuously rebooting a machine.<\/li>\n<\/ul>\n

     <\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

    One confusion around all of our extensions is: how are reboots handled? This varies by extension, but only VM Applications provide the option on\u00a0how to handle them. It does this via the “scriptBehaviorAfterReboot” property. \u00a0\u00a0\u00a0\u00a0“resources”:\u00a0[ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“type”:\u00a0“Microsoft.Compute\/galleries\/applications\/versions”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“apiVersion”: “2024-03-03”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“name”: “[concat(parameters(‘galleries_mygallery_name’), ‘\/’, parameters(‘applicationDefinitionName’), ‘\/’, parameters(‘version’))]”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“location”:\u00a0“[parameters(‘resourceLocation’)]”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“properties”:\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“publishingProfile”:\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“source”:\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“mediaLink”:\u00a0“[parameters(‘servicePackageLink’)]” \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“manageActions”:\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“install”:\u00a0“[parameters(‘installScript’)]”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“remove”:\u00a0“echo\u00a0\\”Done\\”” \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}, […]<\/p>\n","protected":false},"author":103696,"featured_media":197,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[18,4],"class_list":["post-195","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vm-applications","tag-reboot","tag-vmapplications"],"acf":[],"blog_post_summary":"

    One confusion around all of our extensions is: how are reboots handled? This varies by extension, but only VM Applications provide the option on\u00a0how to handle them. It does this via the “scriptBehaviorAfterReboot” property. \u00a0\u00a0\u00a0\u00a0“resources”:\u00a0[ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“type”:\u00a0“Microsoft.Compute\/galleries\/applications\/versions”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“apiVersion”: “2024-03-03”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“name”: “[concat(parameters(‘galleries_mygallery_name’), ‘\/’, parameters(‘applicationDefinitionName’), ‘\/’, parameters(‘version’))]”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“location”:\u00a0“[parameters(‘resourceLocation’)]”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“properties”:\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“publishingProfile”:\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“source”:\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“mediaLink”:\u00a0“[parameters(‘servicePackageLink’)]” \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“manageActions”:\u00a0{ \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“install”:\u00a0“[parameters(‘installScript’)]”, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0“remove”:\u00a0“echo\u00a0\\”Done\\”” \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0}, […]<\/p>\n","_links":{"self":[{"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/posts\/195","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/users\/103696"}],"replies":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/comments?post=195"}],"version-history":[{"count":0,"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/posts\/195\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/media\/197"}],"wp:attachment":[{"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/media?parent=195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/categories?post=195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/devblogs.microsoft.com\/azure-vm-runtime\/wp-json\/wp\/v2\/tags?post=195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}