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Merge pull request #112 from marosset/kubeadm-containerd
Adding containerd support to kubeadm related scripts/specs/etc
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| <# | ||
| .SYNOPSIS | ||
| Installs ContainerD on a Windows machines in preperation for joining the node to a Kubernetes cluster. | ||
| .DESCRIPTION | ||
| This script | ||
| - Verifies that Windows Features requried for running contianers are enabled (and enables then if they are not) | ||
| - Downloads ContainerD binaries from from at the version specified. | ||
| - Downloads Windows SND CNI plugins. | ||
| - Sets up a basic nat networking config for ContainerD to use until another CNI is configured | ||
| - Registers ContainerD as a windows service. | ||
| .PARAMETER ContainerDVersion | ||
| ContainerD version to download and use. | ||
| .PARAMETER netAdapterName | ||
| Name of network adapter to use when configuring basic nat network. | ||
| .EXAMPLE | ||
| PS> .\Install-Conatinerd.ps1 | ||
| #> | ||
|
|
||
| Param( | ||
| [parameter(HelpMessage = "ContainerD version to use")] | ||
| [string] $ContainerDVersion = "1.4.1", | ||
| [parameter(HelpMessage = "Name of network adapter to use when configuring basic nat network")] | ||
| [string] $netAdapterName = "Ethernet" | ||
| ) | ||
|
|
||
| $ErrorActionPreference = 'Stop' | ||
|
|
||
| function DownloadFile($destination, $source) { | ||
| Write-Host("Downloading $source to $destination") | ||
| curl.exe --silent --fail -Lo $destination $source | ||
|
|
||
| if (!$?) { | ||
| Write-Error "Download $source failed" | ||
| exit 1 | ||
| } | ||
| } | ||
|
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||
| <# | ||
| .DESCRIPTION | ||
| Computes a subnet for a gateway from the IPv4 IPAddress and PrefixLength properties | ||
| for a given network adapter. This value is used for IPAM in a nat CNI config required for | ||
| containerd. | ||
| .NOTES | ||
| This logic is adapted from | ||
| https://github.com/containerd/containerd/blob/4a6b47d470d9f2dfc3d49f2819b968861dfa123e/script/setup/install-cni-windows | ||
| .EXAMPLE | ||
| PS> CalculateSubNet -gateway 172.16.5.8 -prefixLength 24 | ||
| 172.16.5.0/8 | ||
| #> | ||
| function CalculateSubNet { | ||
| param ( | ||
| [string]$gateway, | ||
| [int]$prefixLength | ||
| ) | ||
| $len = $prefixLength | ||
| $parts = $gateway.Split('.') | ||
| $result = @() | ||
| for ($i = 0; $i -le 3; $i++) { | ||
| if ($len -ge 8) { | ||
| $mask = 255 | ||
|
|
||
| } | ||
| elseif ($len -gt 0) { | ||
| $mask = ((256 - 2 * (8 - $len))) | ||
| } | ||
| else { | ||
| $mask = 0 | ||
| } | ||
| $len -= 8 | ||
| $result += ([int]$parts[$i] -band $mask) | ||
| } | ||
|
|
||
| $subnetIp = [string]::Join('.', $result) | ||
| $cidr = 32 - $prefixLength | ||
| return "${subnetIp}/$cidr" | ||
| } | ||
|
|
||
| $requiredWindowsFeatures = @( | ||
| "Containers", | ||
| "Hyper-V", | ||
| "Hyper-V-PowerShell") | ||
|
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||
| function ValidateWindowsFeatures { | ||
| $allFeaturesInstalled = $true | ||
| foreach ($feature in $requiredWindowsFeatures) { | ||
| $f = Get-WindowsFeature -Name $feature | ||
| if (-not $f.Installed) { | ||
| Write-Warning "Windows feature: '$feature' is not installed." | ||
| $allFeaturesInstalled = $false | ||
| } | ||
| } | ||
| return $allFeaturesInstalled | ||
| } | ||
|
|
||
| if (-not (ValidateWindowsFeatures)) { | ||
| Write-Output "Installing required windows features..." | ||
|
|
||
| foreach ($feature in $requiredWindowsFeatures) { | ||
| Install-WindowsFeature -Name $feature | ||
| } | ||
|
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||
| Write-Output "Please reboot and re-run this script." | ||
| exit 0 | ||
| } | ||
|
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||
| Write-Output "Getting ContainerD binaries" | ||
| $global:ConainterDPath = "$env:ProgramFiles\containerd" | ||
| mkdir -Force $global:ConainterDPath | Out-Null | ||
| DownloadFile "$global:ConainterDPath\containerd.tar.gz" https://github.com/containerd/containerd/releases/download/v${ContainerDVersion}/containerd-${ContainerDVersion}-windows-amd64.tar.gz | ||
| tar.exe -xvf "$global:ConainterDPath\containerd.tar.gz" --strip=1 -C $global:ConainterDPath | ||
| $env:Path += ";$global:ConainterDPath" | ||
| [Environment]::SetEnvironmentVariable("Path", $env:Path, [System.EnvironmentVariableTarget]::Machine) | ||
| containerd.exe config default | Out-File "$global:ConainterDPath\config.toml" -Encoding ascii | ||
| #config file fixups | ||
| $config = Get-Content "$global:ConainterDPath\config.toml" | ||
| $config = $config -replace "bin_dir = (.)*$", "bin_dir = `"c:/opt/cni/bin`"" | ||
| $config = $config -replace "conf_dir = (.)*$", "conf_dir = `"c:/etc/cni/net.d`"" | ||
| $config | Set-Content "$global:ConainterDPath\config.toml" -Force | ||
|
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| mkdir -Force c:\opt\cni\bin | Out-Null | ||
| mkdir -Force c:\etc\cni\net.d | Out-Null | ||
|
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| Write-Output "Getting SDN CNI binaries" | ||
| DownloadFile "c:\opt\cni\cni-plugins.zip" https://github.com/microsoft/windows-container-networking/releases/download/v0.2.0/windows-container-networking-cni-amd64-v0.2.0.zip | ||
| Expand-Archive -Path "c:\opt\cni\cni-plugins.zip" -DestinationPath "c:\opt\cni\bin" -Force | ||
|
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| Write-Output "Creating network config for nat network" | ||
| $gateway = (Get-NetIPAddress -InterfaceAlias $netAdapterName -AddressFamily IPv4).IPAddress | ||
| $prefixLength = (Get-NetIPAddress -InterfaceAlias $netAdapterName -AddressFamily IPv4).PrefixLength | ||
|
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| $subnet = CalculateSubNet -gateway $gateway -prefixLength $prefixLength | ||
|
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| @" | ||
| { | ||
| "cniVersion": "0.2.0", | ||
| "name": "nat", | ||
| "type": "nat", | ||
| "master": "Ethernet", | ||
| "ipam": { | ||
| "subnet": "$subnet", | ||
| "routes": [ | ||
| { | ||
| "GW": "$gateway" | ||
| } | ||
| ] | ||
| }, | ||
| "capabilities": { | ||
| "portMappings": true, | ||
| "dns": true | ||
| } | ||
| } | ||
| "@ | Set-Content "c:\etc\cni\net.d\0-containerd-nat.json" -Force | ||
|
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| Write-Output "Registering ContainerD as a service" | ||
| containerd.exe --register-service | ||
|
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| Write-Output "Starting ContainerD service" | ||
| Start-Service containerd | ||
|
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| Write-Output "Done - please remember to add '--cri-socket `"npipe:////./pipe/containerd-containerd`"' to your kubeadm join command" |
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