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Set explicit ExitTimeOut for MacOS agent launchd plist #594

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merged 3 commits into from
Jun 23, 2022
Merged

Set explicit ExitTimeOut for MacOS agent launchd plist #594

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f3465a5
Set explicit ExitTimeOut for MacOS agent launchd plist
aleksmaus Jun 22, 2022
ff12748
Fix indentation of plist template
aleksmaus Jun 22, 2022
413deb1
Address code review
aleksmaus Jun 22, 2022
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63 changes: 61 additions & 2 deletions internal/pkg/agent/install/svc.go
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ package install

import (
"path/filepath"
"runtime"

"github.com/kardianos/service"

Expand All @@ -18,6 +19,12 @@ const (

// ServiceDescription is the description for the service.
ServiceDescription = "Elastic Agent is a unified agent to observe, monitor and protect your system."

// Set the launch daemon ExitTimeOut to 60 seconds in order to allow the agent to shutdown gracefully
// At the moment the version 8.3 & 8.4 of the agent are taking about 11 secs to shutdown
// and the launchd sends SIGKILL after 5 secs which causes the beats processes to be left running orphaned
// depending on the shutdown timing.
darwinServiceExitTimeout = 60
)

// ExecutablePath returns the path for the installed Agents executable.
Expand All @@ -30,7 +37,7 @@ func ExecutablePath() string {
}

func newService() (service.Service, error) {
return service.New(nil, &service.Config{
cfg := &service.Config{
Name: paths.ServiceName,
DisplayName: ServiceDisplayName,
Description: ServiceDescription,
Expand All @@ -45,5 +52,57 @@ func newService() (service.Service, error) {
"OnFailureDelayDuration": "1s",
"OnFailureResetPeriod": 10,
},
})
}

if runtime.GOOS == "darwin" {
// The github.com/kardianos/service library doesn't support ExitTimeOut in their prebuilt template.
// This option allows to pass our own template for the launch daemon plist, which is a copy
// of the prebuilt template with added ExitTimeOut option
cfg.Option["LaunchdConfig"] = darwinLaunchdConfig
cfg.Option["ExitTimeOut"] = darwinServiceExitTimeout
}

return service.New(nil, cfg)
}

// A copy of the launchd plist template from github.com/kardianos/service
// with added .Config.Option.ExitTimeOut option
const darwinLaunchdConfig = `<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN"
"http://www.apple.com/DTDs/PropertyList-1.0.dtd" >
<plist version='1.0'>
<dict>
<key>Label</key>
<string>{{html .Name}}</string>
<key>ProgramArguments</key>
<array>
<string>{{html .Path}}</string>
{{range .Config.Arguments}}
<string>{{html .}}</string>
{{end}}
</array>
{{if .UserName}}<key>UserName</key>
<string>{{html .UserName}}</string>{{end}}
{{if .ChRoot}}<key>RootDirectory</key>
<string>{{html .ChRoot}}</string>{{end}}
{{if .Config.Option.ExitTimeOut}}<key>ExitTimeOut</key>
<integer>{{html .Config.Option.ExitTimeOut}}</integer>{{end}}
{{if .WorkingDirectory}}<key>WorkingDirectory</key>
<string>{{html .WorkingDirectory}}</string>{{end}}
<key>SessionCreate</key>
<{{bool .SessionCreate}}/>
<key>KeepAlive</key>
<{{bool .KeepAlive}}/>
<key>RunAtLoad</key>
<{{bool .RunAtLoad}}/>
<key>Disabled</key>
<false/>

<key>StandardOutPath</key>
<string>/usr/local/var/log/{{html .Name}}.out.log</string>
<key>StandardErrorPath</key>
<string>/usr/local/var/log/{{html .Name}}.err.log</string>

</dict>
</plist>
`