All, I've started using the servicecheck function to restart services more extensively lately. However, I encountered a department which needs to shut down a monitored service during a maintenance window, and the servicecheck would restart it. Thus, I created a 'noservicecheck' item in the client-local.cfg process. Hope you find it useful enough to add to next PS version.
Tim Williams Virginia Commonwealth University Computing Center
Here is a section to add to the XymonPSClient.doc help file: noservicecheck
noservicecheck:SERVICENAME:DAYOFWEEK:STARTHOUR:DURATION
Checks if a specified Windows Service servicecheck exists and suppresses it during the specified Maintenance Window. Window can span multiple days, as specified by Duration, but would terminate if script is restarted after initiation day/hour.
SERVICENAME – name of the service to check for a ‘servicecheck’ statement.
DAYOFWEEK – numeric day of the week, where Sunday = 0, Monday = 1, etc.
STARTHOUR – military hour to start the Maintenance Window, 0 for midnight up to 23
DURATION – how long in hours a servicecheck should not institute a restart
Examples:
servicecheck:Sophos Message Router:10
noservicecheck:Sophos Message Router:0:5:1
(no restart starting first scan after Sunday 5AM to first scan after 6AM) *Here are the revisions in XymonClient.PS1:*
*Add* following to declared variables about line 48: $MaintChecks = @{}
*Add* line to function XymonClientConfig($cfglines) for new item to be recognized: -or $l -match '^noservicecheck:' `
*Replace* 'servicecheck' function:
function XymonServiceCheck { WriteLog "Executing XymonServiceCheck" if ($script:clientlocalcfg_entries -ne $null) { $servicecfgs = @($script:clientlocalcfg_entries.keys | where { $_ -match '^servicecheck' }) foreach ($service in $servicecfgs) { # parameter should be 'servicecheck:<servicename>:<duration>' $checkparams = $service -split ':' # validation if ($checkparams.length -ne 3) { WriteLog "ERROR: not enough parameters (should be servicecheck:<servicename>:<duration>) - $checkparams[1]" continue } else { $duration = $checkparams[2] -as [int] if ($checkparams[1] -eq '' -or $duration -eq $null) { WriteLog "ERROR: config error (should be servicecheck:<servicename>:<duration>) - $checkparams[1]" continue } } # check for maintenance window $serviceexclds = @($script:clientlocalcfg_entries.keys | where { $_ -match '^noservicecheck' }) foreach ($maintservice in $serviceexclds) { # parameter should be 'noservicecheck:<servicename>:<numeric day of week Sun=0>:<military start hour>:<duration in Hours>' $checkMparams = $maintservice -split ':' if ($checkparams[1] -eq $checkMparams[1]){ # validation of number of parameters if ($checkMparams.length -ne 5) { WriteLog ("ERROR: not enough parameters (noservicecheck:<servicename>:<numeric day of week Sun=0>:<military start hour>:<duration Hrs> {0}" -f $checkMparams[1]) continue } else { # get values $MaintDay = $checkMparams[2] -as [int] if($MaintDay -eq 0){$MaintWeekDay = "Sunday"} if($MaintDay -eq 1){$MaintWeekDay = "Monday"} if($MaintDay -eq 2){$MaintWeekDay = "Tuesday"} if($MaintDay -eq 3){$MaintWeekDay = "Wednesday"} if($MaintDay -eq 4){$MaintWeekDay = "Thursday"} if($MaintDay -eq 5){$MaintWeekDay = "Friday"} if($MaintDay -eq 6){$MaintWeekDay = "Saturday"} $MaintStartHour = $checkMparams[3] -as [int] $MaintDuration = $checkMparams[4] -as [int] # validation of basic values if ($checkMparams[1] -eq '' -or $MaintDuration -eq $null -or ($MaintDay -inotin 0..6) -or ($MaintStartHour -inotin 0..23)) { WriteLog ("ERROR: config error (noservicecheck:<servicename>:<numeric day of week Sun=0>:<military start hour>:<duration Hrs>) {0}" -f $checkMparams[1]) continue } }
if (((get-date).DayofWeek -eq $MaintWeekDay) -and((get-date).Hour -eq $MaintStartHour) ) { if ($script:MaintChecks.ContainsKey($checkMparams[1])) { $MaintWindowEnd = $script:MaintChecks[$checkMparams[1]].AddHours($MaintDuration) if ((get-date) -lt $MaintWindowEnd){ WriteLog (" Maintenance: Skipping Service Check until after $($MaintWindowEnd) for {0}" -f $checkMparams[1]) continue }Else{ clear.variable $script:MaintChecks } } else{ WriteLog ("Not seen this NoServiceCheck before, starting Maintenance Window now for {0}" -f $checkMparams[1]) $hourTop = (get-date).Minute $script:MaintChecks[$checkMparams[1]] = (get-date).AddMinutes(-($hourTop)) continue } } # end of maintenance hold } WriteLog ("Checking service {0}" -f $checkparams[1])
$winsrv = Get-Service -Name $checkparams[1]
if ($winsrv.Status -eq 'Stopped')
{
writeLog ("!! Service {0} is stopped" -f$checkparams[1]) if ($script:ServiceChecks.ContainsKey($checkparams[1])) { $restarttime = $script:ServiceChecks[$checkparams[1]].AddSeconds($duration) writeLog "Seen this service before; restart time is $restarttime" if ($restarttime -lt (get-date)) { writeLog (" -> Starting service {0}" -f $checkparams[1]) $winsrv.Start() } } else { writeLog "Not seen this service before, setting restart time -1 hour" $script:ServiceChecks[$checkparams[1]] = (get-date).AddHours(-1) } } elseif ('StartPending', 'Running' -contains $winsrv.Status) { writeLog " -Service is running, updating last seen time" $script:ServiceChecks[$checkparams[1]] = get-date } } } } }