红帽全球峰会11.19. 在 Azure 中创建额外的 worker 机器
您可以通过分散启动各个实例或利用集群外自动化流程（如自动缩放组），在 Microsoft Azure 中为您的集群创建 worker 机器。您还可以利用 OpenShift Container Platform 中的内置集群扩展机制和机器 API。
注意
如果您要安装三节点集群，请跳过这一步。三节点集群包含三个 control plane 机器，它们也可以充当计算机器。
在本例中，您要使用 Azure Resource Manager(ARM)模板手动启动一个实例。通过在 文件中包括类型为 06_workers.json 的其他资源，即可启动其他实例。
注意
默认情况下，Microsoft Azure 将 control plane 机器和计算机器放在预先设置的可用区中。您可以为计算节点或 control plane 节点手动设置可用区。要做到这一点，通过在虚拟机资源的 zones 参数中指定每个可用区来修改供应商的 ARM 模板。
如果不使用提供的 ARM 模板来创建 control plane 机器，您必须检查提供的信息并手动创建基础架构。如果您的集群没有正确初始化，请考虑与安装日志联系红帽支持。
先决条件
- 配置 Azure 帐户。
- 为集群生成 Ignition 配置文件。
- 在 Azure 中创建和配置 VNet 及相关子网。
- 在 Azure 中创建和配置联网及负载均衡器。
- 创建 control plane 和计算角色。
- 创建 bootstrap 机器。
- 创建 control plane 机器。
流程
-
复制 worker 机器的 ARM 模板一节中的模板，并将它以
06_workers.json保存到集群的安装目录中。此模板描述了集群所需的 worker 机器。 导出 worker 机器部署所需的以下变量：
$ export WORKER_IGNITION=`cat <installation_directory>/worker.ign | base64 | tr -d '\n'`
使用
azCLI 创建部署：$ az deployment group create -g ${RESOURCE_GROUP} \ --template-file "<installation_directory>/06_workers.json" \ --parameters workerIgnition="${WORKER_IGNITION}" \ 1 --parameters baseName="${INFRA_ID}" \ 2 --parameters nodeVMSize="Standard_D4s_v3" 3
11.19.1. worker 机器的 ARM 模板
您可以使用以下 Azure Resource Manager(ARM)模板来部署 OpenShift Container Platform 集群所需的 worker 机器：
例 11.27. 06_workers.json ARM template
{
"$schema" : "https://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion" : "1.0.0.0",
"parameters" : {
"baseName" : {
"type" : "string",
"minLength" : 1,
"metadata" : {
"description" : "Base name to be used in resource names (usually the cluster's Infra ID)"
}
},
"vnetBaseName": {
"type": "string",
"defaultValue": "",
"metadata" : {
"description" : "The specific customer vnet's base name (optional)"
}
},
"workerIgnition" : {
"type" : "string",
"metadata" : {
"description" : "Ignition content for the worker nodes"
}
},
"numberOfNodes" : {
"type" : "int",
"defaultValue" : 3,
"minValue" : 2,
"maxValue" : 30,
"metadata" : {
"description" : "Number of OpenShift compute nodes to deploy"
}
},
"sshKeyData" : {
"type" : "securestring",
"defaultValue" : "Unused",
"metadata" : {
"description" : "Unused"
}
},
"nodeVMSize" : {
"type" : "string",
"defaultValue" : "Standard_D4s_v3",
"metadata" : {
"description" : "The size of the each Node Virtual Machine"
}
},
"hyperVGen": {
"type": "string",
"metadata": {
"description": "VM generation image to use"
},
"defaultValue": "V2",
"allowedValues": [
"V1",
"V2"
]
}
},
"variables" : {
"location" : "[resourceGroup().location]",
"virtualNetworkName" : "[concat(if(not(empty(parameters('vnetBaseName'))), parameters('vnetBaseName'), parameters('baseName')), '-vnet')]",
"virtualNetworkID" : "[resourceId('Microsoft.Network/virtualNetworks', variables('virtualNetworkName'))]",
"nodeSubnetName" : "[concat(if(not(empty(parameters('vnetBaseName'))), parameters('vnetBaseName'), parameters('baseName')), '-worker-subnet')]",
"nodeSubnetRef" : "[concat(variables('virtualNetworkID'), '/subnets/', variables('nodeSubnetName'))]",
"infraLoadBalancerName" : "[parameters('baseName')]",
"sshKeyPath" : "/home/capi/.ssh/authorized_keys",
"identityName" : "[concat(parameters('baseName'), '-identity')]",
"galleryName": "[concat('gallery_', replace(parameters('baseName'), '-', '_'))]",
"imageName" : "[concat(parameters('baseName'), if(equals(parameters('hyperVGen'), 'V2'), '-gen2', ''))]",
"copy" : [
{
"name" : "vmNames",
"count" : "[parameters('numberOfNodes')]",
"input" : "[concat(parameters('baseName'), '-worker-', variables('location'), '-', copyIndex('vmNames', 1))]"
}
]
},
"resources" : [
{
"apiVersion" : "2019-05-01",
"name" : "[concat('node', copyIndex())]",
"type" : "Microsoft.Resources/deployments",
"copy" : {
"name" : "nodeCopy",
"count" : "[length(variables('vmNames'))]"
},
"properties" : {
"mode" : "Incremental",
"template" : {
"$schema" : "http://schema.management.azure.com/schemas/2015-01-01/deploymentTemplate.json#",
"contentVersion" : "1.0.0.0",
"resources" : [
{
"apiVersion" : "2018-06-01",
"type" : "Microsoft.Network/networkInterfaces",
"name" : "[concat(variables('vmNames')[copyIndex()], '-nic')]",
"location" : "[variables('location')]",
"properties" : {
"ipConfigurations" : [
{
"name" : "pipConfig",
"properties" : {
"privateIPAllocationMethod" : "Dynamic",
"subnet" : {
"id" : "[variables('nodeSubnetRef')]"
}
}
}
]
}
},
{
"apiVersion" : "2018-06-01",
"type" : "Microsoft.Compute/virtualMachines",
"name" : "[variables('vmNames')[copyIndex()]]",
"location" : "[variables('location')]",
"tags" : {
"kubernetes.io-cluster-ffranzupi": "owned"
},
"identity" : {
"type" : "userAssigned",
"userAssignedIdentities" : {
"[resourceID('Microsoft.ManagedIdentity/userAssignedIdentities/', variables('identityName'))]" : {}
}
},
"dependsOn" : [
"[concat('Microsoft.Network/networkInterfaces/', concat(variables('vmNames')[copyIndex()], '-nic'))]"
],
"properties" : {
"hardwareProfile" : {
"vmSize" : "[parameters('nodeVMSize')]"
},
"osProfile" : {
"computerName" : "[variables('vmNames')[copyIndex()]]",
"adminUsername" : "capi",
"adminPassword" : "NotActuallyApplied!",
"customData" : "[parameters('workerIgnition')]",
"linuxConfiguration" : {
"disablePasswordAuthentication" : false
}
},
"storageProfile" : {
"imageReference": {
"id": "[resourceId('Microsoft.Compute/galleries/images', variables('galleryName'), variables('imageName'))]"
},
"osDisk" : {
"name": "[concat(variables('vmNames')[copyIndex()],'_OSDisk')]",
"osType" : "Linux",
"createOption" : "FromImage",
"managedDisk": {
"storageAccountType": "Premium_LRS"
},
"diskSizeGB": 128
}
},
"networkProfile" : {
"networkInterfaces" : [
{
"id" : "[resourceId('Microsoft.Network/networkInterfaces', concat(variables('vmNames')[copyIndex()], '-nic'))]",
"properties": {
"primary": true
}
}
]
}
}
}
]
}
}
}
]
}