A lot of things could not work out of the box when you move your first steps with Docker (which we have learned to install in this previous post) under Windows 2016. This is a new project, the partnership between Microsoft and Docker is definitively recent, and while the community is contributing greatly to it, it's always good to know where the logs are when you can't get things to work, like in the following screenshot:
A post by a technical write at Microsoft showed how to use Get-EventLog to retrieve events generated by the Docker engine:
Get-EventLog -LogName Application -Source Docker -After (Get-Date).AddMinutes(-1000) | Sort-Object Time
Now, Get-EventLog is sort of legacy cmdlet that is supported by older versions of Windows PowerShell.
Get-WinEvent is the cmdlet you want to be using, since it is definitively faster.
Get-WinEvent is the cmdlet you want to be using, since it is definitively faster.
Get-WinEvent -FilterHashtable @{ logname='application' providername='docker' starttime=((Get-Date).AddMinutes(-1000)) } ProviderName: docker TimeCreated Id LevelDisplayName Message ----------- -- ---------------- ------- 18/10/2016 14:14:44 1 Error Handler for GET /v1.24/images... 18/10/2016 14:14:26 1 Information API listen on //./pipe/docker... 18/10/2016 14:14:26 11 Information Docker daemon [version=1.12.2... 18/10/2016 14:14:26 1 Information Daemon has completed initiali... 18/10/2016 14:14:26 1 Information Loading containers: done. 18/10/2016 14:14:26 1 Information Loading containers: start. 18/10/2016 14:14:26 1 Information Graph migration to content-ad... 18/10/2016 14:14:25 1 Information [graphdriver] using prior sto... 18/10/2016 14:14:25 1 Information Windows default isolation mod...
The difference in performance is easily demonstrated:
Measure-Command {Get-EventLog -LogName Application -Source Docker} Days : 0 Hours : 0 Minutes : 0 Seconds : 0 Milliseconds : 527 Ticks : 5274839 TotalDays : 6,10513773148148E-06 TotalHours : 0,000146523305555556 TotalMinutes : 0,00879139833333333 TotalSeconds : 0,5274839 TotalMilliseconds : 527,4839
Measure-Command {Get-WinEvent -FilterHashtable @{ logname='application' providername='docker'} } Days : 0 Hours : 0 Minutes : 0 Seconds : 0 Milliseconds : 80 Ticks : 801087 TotalDays : 9,27184027777778E-07 TotalHours : 2,22524166666667E-05 TotalMinutes : 0,001335145 TotalSeconds : 0,0801087 TotalMilliseconds : 80,1087
Stay tuned for more Docker tips.
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