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engine.go
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engine.go
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// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
package engine
import (
"bytes"
"compress/gzip"
"encoding/base64"
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net"
"net/http"
"regexp"
"sort"
"strconv"
"strings"
"text/template"
"github.com/Azure/go-autorest/autorest/to"
//log "github.com/sirupsen/logrus"
"github.com/Azure/aks-engine/pkg/api"
"github.com/Azure/aks-engine/pkg/api/common"
"github.com/Azure/aks-engine/pkg/helpers"
"github.com/ghodss/yaml"
"github.com/pkg/errors"
)
var commonTemplateFiles = []string{agentOutputs, agentParams, masterOutputs, iaasOutputs, masterParams, windowsParams}
var dcosTemplateFiles = []string{dcosBaseFile, dcosAgentResourcesVMAS, dcosAgentResourcesVMSS, dcosAgentVars, dcosMasterResources, dcosMasterVars, dcosParams, dcosWindowsAgentResourcesVMAS, dcosWindowsAgentResourcesVMSS}
var dcos2TemplateFiles = []string{dcos2BaseFile, dcosAgentResourcesVMAS, dcosAgentResourcesVMSS, dcosAgentVars, dcos2MasterResources, dcos2BootstrapResources, dcos2MasterVars, dcosParams, dcosWindowsAgentResourcesVMAS, dcosWindowsAgentResourcesVMSS, dcos2BootstrapVars, dcos2BootstrapParams}
var kubernetesParamFiles = []string{armParameters, kubernetesParams, masterParams, agentParams, windowsParams}
var swarmTemplateFiles = []string{swarmBaseFile, swarmParams, swarmAgentResourcesVMAS, swarmAgentVars, swarmAgentResourcesVMSS, swarmBaseFile, swarmMasterResources, swarmMasterVars, swarmWinAgentResourcesVMAS, swarmWinAgentResourcesVMSS}
var swarmModeTemplateFiles = []string{swarmBaseFile, swarmParams, swarmAgentResourcesVMAS, swarmAgentVars, swarmAgentResourcesVMSS, swarmBaseFile, swarmMasterResources, swarmMasterVars, swarmWinAgentResourcesVMAS, swarmWinAgentResourcesVMSS}
var keyvaultSecretPathRe *regexp.Regexp
func init() {
keyvaultSecretPathRe = regexp.MustCompile(`^(/subscriptions/\S+/resourceGroups/\S+/providers/Microsoft.KeyVault/vaults/\S+)/secrets/([^/\s]+)(/(\S+))?$`)
}
// GenerateKubeConfig returns a JSON string representing the KubeConfig
func GenerateKubeConfig(properties *api.Properties, location string) (string, error) {
if properties == nil {
return "", errors.New("Properties nil in GenerateKubeConfig")
}
if properties.CertificateProfile == nil {
return "", errors.New("CertificateProfile property may not be nil in GenerateKubeConfig")
}
b, err := Asset(kubeConfigJSON)
if err != nil {
return "", errors.Wrapf(err, "error reading kube config template file %s", kubeConfigJSON)
}
kubeconfig := string(b)
// variable replacement
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVerbatim \"parameters('caCertificate')\"}}", base64.StdEncoding.EncodeToString([]byte(properties.CertificateProfile.CaCertificate)), -1)
if properties.OrchestratorProfile != nil &&
properties.OrchestratorProfile.KubernetesConfig != nil &&
properties.OrchestratorProfile.KubernetesConfig.PrivateCluster != nil &&
to.Bool(properties.OrchestratorProfile.KubernetesConfig.PrivateCluster.Enabled) {
if properties.MasterProfile.Count > 1 {
// more than 1 master, use the internal lb IP
firstMasterIP := net.ParseIP(properties.MasterProfile.FirstConsecutiveStaticIP).To4()
if firstMasterIP == nil {
return "", errors.Errorf("MasterProfile.FirstConsecutiveStaticIP '%s' is an invalid IP address", properties.MasterProfile.FirstConsecutiveStaticIP)
}
lbIP := net.IP{firstMasterIP[0], firstMasterIP[1], firstMasterIP[2], firstMasterIP[3] + byte(DefaultInternalLbStaticIPOffset)}
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVerbatim \"reference(concat('Microsoft.Network/publicIPAddresses/', variables('masterPublicIPAddressName'))).dnsSettings.fqdn\"}}", lbIP.String(), -1)
} else {
// Master count is 1, use the master IP
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVerbatim \"reference(concat('Microsoft.Network/publicIPAddresses/', variables('masterPublicIPAddressName'))).dnsSettings.fqdn\"}}", properties.MasterProfile.FirstConsecutiveStaticIP, -1)
}
} else {
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVerbatim \"reference(concat('Microsoft.Network/publicIPAddresses/', variables('masterPublicIPAddressName'))).dnsSettings.fqdn\"}}", api.FormatProdFQDNByLocation(properties.MasterProfile.DNSPrefix, location, properties.GetCustomCloudName()), -1)
}
kubeconfig = strings.Replace(kubeconfig, "{{WrapAsVariable \"resourceGroup\"}}", properties.MasterProfile.DNSPrefix, -1)
var authInfo string
if properties.AADProfile == nil {
authInfo = fmt.Sprintf("{\"client-certificate-data\":\"%v\",\"client-key-data\":\"%v\"}",
base64.StdEncoding.EncodeToString([]byte(properties.CertificateProfile.KubeConfigCertificate)),
base64.StdEncoding.EncodeToString([]byte(properties.CertificateProfile.KubeConfigPrivateKey)))
} else {
tenantID := properties.AADProfile.TenantID
if len(tenantID) == 0 {
tenantID = "common"
}
authInfo = fmt.Sprintf("{\"auth-provider\":{\"name\":\"azure\",\"config\":{\"environment\":\"%v\",\"tenant-id\":\"%v\",\"apiserver-id\":\"%v\",\"client-id\":\"%v\"}}}",
helpers.GetTargetEnv(location, properties.GetCustomCloudName()),
tenantID,
properties.AADProfile.ServerAppID,
properties.AADProfile.ClientAppID)
}
kubeconfig = strings.Replace(kubeconfig, "{{authInfo}}", authInfo, -1)
return kubeconfig, nil
}
// validateDistro checks if the requested orchestrator type is supported on the requested Linux distro.
func validateDistro(cs *api.ContainerService) bool {
// Check Master distro
if cs.Properties.MasterProfile != nil && cs.Properties.MasterProfile.Distro == api.RHEL &&
(cs.Properties.OrchestratorProfile.OrchestratorType != api.SwarmMode) {
log.Printf("Orchestrator type %s not suported on RHEL Master", cs.Properties.OrchestratorProfile.OrchestratorType)
return false
}
// Check Agent distros
for _, agentProfile := range cs.Properties.AgentPoolProfiles {
if agentProfile.Distro == api.RHEL &&
(cs.Properties.OrchestratorProfile.OrchestratorType != api.SwarmMode) {
log.Printf("Orchestrator type %s not suported on RHEL Agent", cs.Properties.OrchestratorProfile.OrchestratorType)
return false
}
}
return true
}
func generateIPList(count int, firstAddr string) []string {
ipaddr := net.ParseIP(firstAddr).To4()
if ipaddr == nil {
panic(fmt.Sprintf("IPAddr '%s' is an invalid IP address", firstAddr))
}
ret := make([]string, count)
for i := 0; i < count; i++ {
ret[i] = fmt.Sprintf("%d.%d.%d.%d", ipaddr[0], ipaddr[1], ipaddr[2], ipaddr[3]+byte(i))
}
return ret
}
func addValue(m paramsMap, k string, v interface{}) {
m[k] = paramsMap{
"value": v,
}
}
func addKeyvaultReference(m paramsMap, k string, vaultID, secretName, secretVersion string) {
m[k] = paramsMap{
"reference": &KeyVaultRef{
KeyVault: KeyVaultID{
ID: vaultID,
},
SecretName: secretName,
SecretVersion: secretVersion,
},
}
}
func addSecret(m paramsMap, k string, v interface{}, encode bool) {
str, ok := v.(string)
if !ok {
addValue(m, k, v)
return
}
parts := keyvaultSecretPathRe.FindStringSubmatch(str)
if parts == nil || len(parts) != 5 {
if encode {
addValue(m, k, base64.StdEncoding.EncodeToString([]byte(str)))
} else {
addValue(m, k, str)
}
return
}
addKeyvaultReference(m, k, parts[1], parts[2], parts[4])
}
// getStorageAccountType returns the support managed disk storage tier for a give VM size
func getStorageAccountType(sizeName string) (string, error) {
spl := strings.Split(sizeName, "_")
if len(spl) < 2 {
return "", errors.Errorf("Invalid sizeName: %s", sizeName)
}
capability := spl[1]
if strings.Contains(strings.ToLower(capability), "s") {
return "Premium_LRS", nil
}
return "Standard_LRS", nil
}
func makeMasterExtensionScriptCommands(cs *api.ContainerService) string {
return makeExtensionScriptCommands(cs.Properties.MasterProfile.PreprovisionExtension,
cs.Properties.ExtensionProfiles)
}
func makeAgentExtensionScriptCommands(cs *api.ContainerService, profile *api.AgentPoolProfile) string {
if profile.OSType == api.Windows {
return makeWindowsExtensionScriptCommands(profile.PreprovisionExtension,
cs.Properties.ExtensionProfiles)
}
return makeExtensionScriptCommands(profile.PreprovisionExtension,
cs.Properties.ExtensionProfiles)
}
func makeExtensionScriptCommands(extension *api.Extension, extensionProfiles []*api.ExtensionProfile) string {
var extensionProfile *api.ExtensionProfile
for _, eP := range extensionProfiles {
if strings.EqualFold(eP.Name, extension.Name) {
extensionProfile = eP
break
}
}
if extensionProfile == nil {
panic(fmt.Sprintf("%s extension referenced was not found in the extension profile", extension.Name))
}
extensionsParameterReference := fmt.Sprintf("parameters('%sParameters')", extensionProfile.Name)
scriptURL := getExtensionURL(extensionProfile.RootURL, extensionProfile.Name, extensionProfile.Version, extensionProfile.Script, extensionProfile.URLQuery)
scriptFilePath := fmt.Sprintf("/opt/azure/containers/extensions/%s/%s", extensionProfile.Name, extensionProfile.Script)
return fmt.Sprintf("- sudo /usr/bin/curl --retry 5 --retry-delay 10 --retry-max-time 30 -o %s --create-dirs \"%s\" \n- sudo /bin/chmod 744 %s \n- sudo %s ',%s,' > /var/log/%s-output.log",
scriptFilePath, scriptURL, scriptFilePath, scriptFilePath, extensionsParameterReference, extensionProfile.Name)
}
func makeWindowsExtensionScriptCommands(extension *api.Extension, extensionProfiles []*api.ExtensionProfile) string {
var extensionProfile *api.ExtensionProfile
for _, eP := range extensionProfiles {
if strings.EqualFold(eP.Name, extension.Name) {
extensionProfile = eP
break
}
}
if extensionProfile == nil {
panic(fmt.Sprintf("%s extension referenced was not found in the extension profile", extension.Name))
}
scriptURL := getExtensionURL(extensionProfile.RootURL, extensionProfile.Name, extensionProfile.Version, extensionProfile.Script, extensionProfile.URLQuery)
scriptFileDir := fmt.Sprintf("$env:SystemDrive:/AzureData/extensions/%s", extensionProfile.Name)
scriptFilePath := fmt.Sprintf("%s/%s", scriptFileDir, extensionProfile.Script)
return fmt.Sprintf("New-Item -ItemType Directory -Force -Path \"%s\" ; Invoke-WebRequest -Uri \"%s\" -OutFile \"%s\" ; powershell \"%s %s\"\n", scriptFileDir, scriptURL, scriptFilePath, scriptFilePath, "$preprovisionExtensionParams")
}
func getDCOSWindowsAgentPreprovisionParameters(cs *api.ContainerService, profile *api.AgentPoolProfile) string {
extension := profile.PreprovisionExtension
var extensionProfile *api.ExtensionProfile
for _, eP := range cs.Properties.ExtensionProfiles {
if strings.EqualFold(eP.Name, extension.Name) {
extensionProfile = eP
break
}
}
parms := extensionProfile.ExtensionParameters
return parms
}
func getDCOSDefaultBootstrapInstallerURL(profile *api.OrchestratorProfile) string {
if profile.OrchestratorType == api.DCOS {
switch profile.OrchestratorVersion {
case common.DCOSVersion1Dot11Dot2:
return "https://dcos-mirror.azureedge.net/dcos-1-11-2/dcos_generate_config.sh"
case common.DCOSVersion1Dot11Dot0:
return "https://dcos-mirror.azureedge.net/dcos-1-11-0/dcos_generate_config.sh"
}
}
return ""
}
func getDCOSDefaultWindowsBootstrapInstallerURL(profile *api.OrchestratorProfile) string {
if profile.OrchestratorType == api.DCOS {
switch profile.OrchestratorVersion {
case common.DCOSVersion1Dot11Dot2:
return "https://dcos-mirror.azureedge.net/dcos-windows/1-11-2"
case common.DCOSVersion1Dot11Dot0:
return "https://dcos-mirror.azureedge.net/dcos-windows/1-11-0"
}
}
return ""
}
func getDCOSDefaultProviderPackageGUID(orchestratorType string, orchestratorVersion string, masterCount int) string {
if orchestratorType == api.DCOS {
switch orchestratorVersion {
case common.DCOSVersion1Dot10Dot0:
switch masterCount {
case 1:
return "c4ec6210f396b8e435177b82e3280a2cef0ce721"
case 3:
return "08197947cb57d479eddb077a429fa15c139d7d20"
case 5:
return "f286ad9d3641da5abb622e4a8781f73ecd8492fa"
}
case common.DCOSVersion1Dot9Dot0:
switch masterCount {
case 1:
return "bcc883b7a3191412cf41824bdee06c1142187a0b"
case 3:
return "dcff7e24c0c1827bebeb7f1a806f558054481b33"
case 5:
return "b41bfa84137a6374b2ff5eb1655364d7302bd257"
}
case common.DCOSVersion1Dot9Dot8:
switch masterCount {
case 1:
return "e8b0e3fc4a16394dc6dd5b19fc54bf1543bff429"
case 3:
return "2d36c3f570d9dd7d187c699f9a322ed9d95e7dfa"
case 5:
return "c03c9587f88929f310b80af4f448b7b51654f1c8"
}
case common.DCOSVersion1Dot8Dot8:
switch masterCount {
case 1:
return "441385ce2f5942df7e29075c12fb38fa5e92cbba"
case 3:
return "b1cd359287504efb780257bd12cc3a63704e42d4"
case 5:
return "d9b61156dfcc9383e014851529738aa550ef57d9"
}
}
}
return ""
}
func getDCOSDefaultRepositoryURL(orchestratorType string, orchestratorVersion string) string {
if orchestratorType == api.DCOS {
switch orchestratorVersion {
case common.DCOSVersion1Dot10Dot0:
return "https://dcosio.azureedge.net/dcos/stable/1.10.0"
case common.DCOSVersion1Dot9Dot8:
return "https://dcosio.azureedge.net/dcos/stable/1.9.8"
default:
return "https://dcosio.azureedge.net/dcos/stable"
}
}
return ""
}
func getDCOSCustomDataPublicIPStr(orchestratorType string, masterCount int) string {
if orchestratorType == api.DCOS {
var buf bytes.Buffer
for i := 0; i < masterCount; i++ {
buf.WriteString(fmt.Sprintf("reference(variables('masterVMNic')[%d]).ipConfigurations[0].properties.privateIPAddress,", i))
if i < (masterCount - 1) {
buf.WriteString(`'\\\", \\\"', `)
}
}
return buf.String()
}
return ""
}
func getDCOSMasterCustomNodeLabels() string {
// return empty string for DCOS since no attribtutes needed on master
return ""
}
func getDCOSAgentCustomNodeLabels(profile *api.AgentPoolProfile) string {
var buf bytes.Buffer
var attrstring string
buf.WriteString("")
// always write MESOS_ATTRIBUTES because
// the provision script will add FD/UD attributes
// at node provisioning time
if len(profile.OSType) > 0 {
attrstring = fmt.Sprintf("MESOS_ATTRIBUTES=\"os:%s", profile.OSType)
} else {
attrstring = fmt.Sprintf("MESOS_ATTRIBUTES=\"os:%s", api.Linux)
}
if len(profile.Ports) > 0 {
attrstring += ";public_ip:yes"
}
buf.WriteString(attrstring)
if len(profile.CustomNodeLabels) > 0 {
for k, v := range profile.CustomNodeLabels {
buf.WriteString(fmt.Sprintf(";%s:%s", k, v))
}
}
buf.WriteString("\"")
return buf.String()
}
func getDCOSWindowsAgentCustomAttributes(profile *api.AgentPoolProfile) string {
var buf bytes.Buffer
var attrstring string
buf.WriteString("")
if len(profile.OSType) > 0 {
attrstring = fmt.Sprintf("os:%s", profile.OSType)
} else {
attrstring = fmt.Sprintf("os:windows")
}
if len(profile.Ports) > 0 {
attrstring += ";public_ip:yes"
}
buf.WriteString(attrstring)
if len(profile.CustomNodeLabels) > 0 {
for k, v := range profile.CustomNodeLabels {
buf.WriteString(fmt.Sprintf(";%s:%s", k, v))
}
}
return buf.String()
}
func getVNETAddressPrefixes(properties *api.Properties) string {
visitedSubnets := make(map[string]bool)
var buf bytes.Buffer
buf.WriteString(`"[variables('masterSubnet')]"`)
visitedSubnets[properties.MasterProfile.Subnet] = true
for _, profile := range properties.AgentPoolProfiles {
if _, ok := visitedSubnets[profile.Subnet]; !ok {
buf.WriteString(fmt.Sprintf(",\n \"[variables('%sSubnet')]\"", profile.Name))
}
}
return buf.String()
}
func getVNETSubnetDependencies(properties *api.Properties) string {
agentString := ` "[concat('Microsoft.Network/networkSecurityGroups/', variables('%sNSGName'))]"`
var buf bytes.Buffer
for index, agentProfile := range properties.AgentPoolProfiles {
if index > 0 {
buf.WriteString(",\n")
}
buf.WriteString(fmt.Sprintf(agentString, agentProfile.Name))
}
return buf.String()
}
func getVNETSubnets(properties *api.Properties, addNSG bool) string {
masterString := `{
"name": "[variables('masterSubnetName')]",
"properties": {
"addressPrefix": "[variables('masterSubnet')]"
}
}`
agentString := ` {
"name": "[variables('%sSubnetName')]",
"properties": {
"addressPrefix": "[variables('%sSubnet')]"
}
}`
agentStringNSG := ` {
"name": "[variables('%sSubnetName')]",
"properties": {
"addressPrefix": "[variables('%sSubnet')]",
"networkSecurityGroup": {
"id": "[resourceId('Microsoft.Network/networkSecurityGroups', variables('%sNSGName'))]"
}
}
}`
var buf bytes.Buffer
buf.WriteString(masterString)
for _, agentProfile := range properties.AgentPoolProfiles {
buf.WriteString(",\n")
if addNSG {
buf.WriteString(fmt.Sprintf(agentStringNSG, agentProfile.Name, agentProfile.Name, agentProfile.Name))
} else {
buf.WriteString(fmt.Sprintf(agentString, agentProfile.Name, agentProfile.Name))
}
}
return buf.String()
}
func getLBRule(name string, port int) string {
return fmt.Sprintf(` {
"name": "LBRule%d",
"properties": {
"backendAddressPool": {
"id": "[concat(variables('%sLbID'), '/backendAddressPools/', variables('%sLbBackendPoolName'))]"
},
"backendPort": %d,
"enableFloatingIP": false,
"frontendIPConfiguration": {
"id": "[variables('%sLbIPConfigID')]"
},
"frontendPort": %d,
"idleTimeoutInMinutes": 5,
"loadDistribution": "Default",
"probe": {
"id": "[concat(variables('%sLbID'),'/probes/tcp%dProbe')]"
},
"protocol": "Tcp"
}
}`, port, name, name, port, name, port, name, port)
}
func getLBRules(name string, ports []int) string {
var buf bytes.Buffer
for index, port := range ports {
if index > 0 {
buf.WriteString(",\n")
}
buf.WriteString(getLBRule(name, port))
}
return buf.String()
}
func getProbe(port int) string {
return fmt.Sprintf(` {
"name": "tcp%dProbe",
"properties": {
"intervalInSeconds": 5,
"numberOfProbes": 2,
"port": %d,
"protocol": "Tcp"
}
}`, port, port)
}
func getProbes(ports []int) string {
var buf bytes.Buffer
for index, port := range ports {
if index > 0 {
buf.WriteString(",\n")
}
buf.WriteString(getProbe(port))
}
return buf.String()
}
func getSecurityRule(port int, portIndex int) string {
// BaseLBPriority specifies the base lb priority.
BaseLBPriority := 200
return fmt.Sprintf(` {
"name": "Allow_%d",
"properties": {
"access": "Allow",
"description": "Allow traffic from the Internet to port %d",
"destinationAddressPrefix": "*",
"destinationPortRange": "%d",
"direction": "Inbound",
"priority": %d,
"protocol": "*",
"sourceAddressPrefix": "Internet",
"sourcePortRange": "*"
}
}`, port, port, port, BaseLBPriority+portIndex)
}
func getDataDisks(a *api.AgentPoolProfile) string {
if !a.HasDisks() {
return ""
}
var buf bytes.Buffer
buf.WriteString("\"dataDisks\": [\n")
dataDisks := ` {
"createOption": "Empty",
"diskSizeGB": "%d",
"lun": %d,
"caching": "ReadOnly",
"name": "[concat(variables('%sVMNamePrefix'), copyIndex(),'-datadisk%d')]",
"vhd": {
"uri": "[concat('http://',variables('storageAccountPrefixes')[mod(add(add(div(copyIndex(),variables('maxVMsPerStorageAccount')),variables('%sStorageAccountOffset')),variables('dataStorageAccountPrefixSeed')),variables('storageAccountPrefixesCount'))],variables('storageAccountPrefixes')[div(add(add(div(copyIndex(),variables('maxVMsPerStorageAccount')),variables('%sStorageAccountOffset')),variables('dataStorageAccountPrefixSeed')),variables('storageAccountPrefixesCount'))],variables('%sDataAccountName'),'.blob.core.windows.net/vhds/',variables('%sVMNamePrefix'),copyIndex(), '--datadisk%d.vhd')]"
}
}`
managedDataDisks := ` {
"diskSizeGB": "%d",
"lun": %d,
"caching": "ReadOnly",
"createOption": "Empty"
}`
for i, diskSize := range a.DiskSizesGB {
if i > 0 {
buf.WriteString(",\n")
}
if a.StorageProfile == api.StorageAccount {
buf.WriteString(fmt.Sprintf(dataDisks, diskSize, i, a.Name, i, a.Name, a.Name, a.Name, a.Name, i))
} else if a.StorageProfile == api.ManagedDisks {
buf.WriteString(fmt.Sprintf(managedDataDisks, diskSize, i))
}
}
buf.WriteString("\n ],")
return buf.String()
}
func getSecurityRules(ports []int) string {
var buf bytes.Buffer
for index, port := range ports {
if index > 0 {
buf.WriteString(",\n")
}
buf.WriteString(getSecurityRule(port, index))
}
return buf.String()
}
// getSingleLine returns the file as a single line
func (t *TemplateGenerator) getSingleLine(textFilename string, cs *api.ContainerService, profile interface{}) (string, error) {
b, err := Asset(textFilename)
if err != nil {
return "", t.Translator.Errorf("yaml file %s does not exist", textFilename)
}
// use go templates to process the text filename
templ := template.New("customdata template").Funcs(t.getTemplateFuncMap(cs))
if _, err = templ.New(textFilename).Parse(string(b)); err != nil {
return "", t.Translator.Errorf("error parsing file %s: %v", textFilename, err)
}
var buffer bytes.Buffer
if err = templ.ExecuteTemplate(&buffer, textFilename, profile); err != nil {
return "", t.Translator.Errorf("error executing template for file %s: %v", textFilename, err)
}
expandedTemplate := buffer.String()
return expandedTemplate, nil
}
// getSingleLineForTemplate returns the file as a single line for embedding in an arm template
func (t *TemplateGenerator) getSingleLineForTemplate(textFilename string, cs *api.ContainerService, profile interface{}) (string, error) {
expandedTemplate, err := t.getSingleLine(textFilename, cs, profile)
if err != nil {
return "", err
}
textStr := escapeSingleLine(expandedTemplate)
return textStr, nil
}
func escapeSingleLine(escapedStr string) string {
// template.JSEscapeString leaves undesirable chars that don't work with pretty print
escapedStr = strings.Replace(escapedStr, "\\", "\\\\", -1)
escapedStr = strings.Replace(escapedStr, "\r\n", "\\n", -1)
escapedStr = strings.Replace(escapedStr, "\n", "\\n", -1)
escapedStr = strings.Replace(escapedStr, "\"", "\\\"", -1)
return escapedStr
}
// getBase64EncodedGzippedCustomScript will return a base64 of the CSE
func getBase64EncodedGzippedCustomScript(csFilename string) string {
b, err := Asset(csFilename)
if err != nil {
// this should never happen and this is a bug
panic(fmt.Sprintf("BUG: %s", err.Error()))
}
// translate the parameters
csStr := string(b)
csStr = strings.Replace(csStr, "\r\n", "\n", -1)
return getBase64EncodedGzippedCustomScriptFromStr(csStr)
}
func getStringFromBase64(str string) (string, error) {
decodedBytes, err := base64.StdEncoding.DecodeString(str)
return string(decodedBytes), err
}
// getBase64EncodedGzippedCustomScriptFromStr will return a base64-encoded string of the gzip'd source data
func getBase64EncodedGzippedCustomScriptFromStr(str string) string {
var gzipB bytes.Buffer
w := gzip.NewWriter(&gzipB)
w.Write([]byte(str))
w.Close()
return base64.StdEncoding.EncodeToString(gzipB.Bytes())
}
func getDCOSProvisionScript(script string) string {
// add the provision script
bp, err := Asset(script)
if err != nil {
panic(fmt.Sprintf("BUG: %s", err.Error()))
}
provisionScript := string(bp)
if strings.Contains(provisionScript, "'") {
panic(fmt.Sprintf("BUG: %s may not contain character '", script))
}
return strings.Replace(strings.Replace(provisionScript, "\r\n", "\n", -1), "\n", "\n\n ", -1)
}
func getAddonFuncMap(addon api.KubernetesAddon) template.FuncMap {
return template.FuncMap{
"ContainerImage": func(name string) string {
i := addon.GetAddonContainersIndexByName(name)
return addon.Containers[i].Image
},
"ContainerCPUReqs": func(name string) string {
i := addon.GetAddonContainersIndexByName(name)
return addon.Containers[i].CPURequests
},
"ContainerCPULimits": func(name string) string {
i := addon.GetAddonContainersIndexByName(name)
return addon.Containers[i].CPULimits
},
"ContainerMemReqs": func(name string) string {
i := addon.GetAddonContainersIndexByName(name)
return addon.Containers[i].MemoryRequests
},
"ContainerMemLimits": func(name string) string {
i := addon.GetAddonContainersIndexByName(name)
return addon.Containers[i].MemoryLimits
},
"ContainerConfig": func(name string) string {
return addon.Config[name]
},
}
}
func getContainerAddonsString(properties *api.Properties, sourcePath string) string {
var result string
settingsMap := kubernetesContainerAddonSettingsInit(properties)
var addonNames []string
for addonName := range settingsMap {
addonNames = append(addonNames, addonName)
}
sort.Strings(addonNames)
for _, addonName := range addonNames {
setting := settingsMap[addonName]
if setting.isEnabled {
var input string
if setting.base64Data != "" {
var err error
input, err = getStringFromBase64(setting.base64Data)
if err != nil {
return ""
}
} else {
orchProfile := properties.OrchestratorProfile
versions := strings.Split(orchProfile.OrchestratorVersion, ".")
addon := orchProfile.KubernetesConfig.GetAddonByName(addonName)
templ := template.New("addon resolver template").Funcs(getAddonFuncMap(addon))
addonFile := getCustomDataFilePath(setting.sourceFile, sourcePath, versions[0]+"."+versions[1])
addonFileBytes, err := Asset(addonFile)
if err != nil {
return ""
}
_, err = templ.Parse(string(addonFileBytes))
if err != nil {
return ""
}
var buffer bytes.Buffer
templ.Execute(&buffer, addon)
input = buffer.String()
}
result += getAddonString(input, "/etc/kubernetes/addons", setting.destinationFile)
}
}
return result
}
func getDCOSAgentProvisionScript(profile *api.AgentPoolProfile, orchProfile *api.OrchestratorProfile, bootstrapIP string) string {
// add the provision script
scriptname := dcos2Provision
if orchProfile.DcosConfig == nil || orchProfile.DcosConfig.BootstrapProfile == nil {
if profile.OSType == api.Windows {
scriptname = dcosWindowsProvision
} else {
scriptname = dcosProvision
}
}
bp, err := Asset(scriptname)
if err != nil {
panic(fmt.Sprintf("BUG: %s", err.Error()))
}
provisionScript := string(bp)
if strings.Contains(provisionScript, "'") {
panic(fmt.Sprintf("BUG: %s may not contain character '", dcosProvision))
}
// the embedded roleFileContents
var roleFileContents string
if len(profile.Ports) > 0 {
// public agents
roleFileContents = "touch /etc/mesosphere/roles/slave_public"
} else {
roleFileContents = "touch /etc/mesosphere/roles/slave"
}
provisionScript = strings.Replace(provisionScript, "ROLESFILECONTENTS", roleFileContents, -1)
provisionScript = strings.Replace(provisionScript, "BOOTSTRAP_IP", bootstrapIP, -1)
var b bytes.Buffer
b.WriteString(provisionScript)
b.WriteString("\n")
if len(orchProfile.DcosConfig.Registry) == 0 {
b.WriteString("rm /etc/docker.tar.gz\n")
}
return strings.Replace(strings.Replace(b.String(), "\r\n", "\n", -1), "\n", "\n\n ", -1)
}
func getDCOSMasterProvisionScript(orchProfile *api.OrchestratorProfile, bootstrapIP string) string {
scriptname := dcos2Provision
if orchProfile.DcosConfig == nil || orchProfile.DcosConfig.BootstrapProfile == nil {
scriptname = dcosProvision
}
// add the provision script
bp, err := Asset(scriptname)
if err != nil {
panic(fmt.Sprintf("BUG: %s", err.Error()))
}
provisionScript := string(bp)
if strings.Contains(provisionScript, "'") {
panic(fmt.Sprintf("BUG: %s may not contain character '", scriptname))
}
// the embedded roleFileContents
roleFileContents := `touch /etc/mesosphere/roles/master
touch /etc/mesosphere/roles/azure_master`
provisionScript = strings.Replace(provisionScript, "ROLESFILECONTENTS", roleFileContents, -1)
provisionScript = strings.Replace(provisionScript, "BOOTSTRAP_IP", bootstrapIP, -1)
var b bytes.Buffer
b.WriteString(provisionScript)
b.WriteString("\n")
return strings.Replace(strings.Replace(b.String(), "\r\n", "\n", -1), "\n", "\n\n ", -1)
}
func getDCOSCustomDataTemplate(orchestratorType, orchestratorVersion string) string {
switch orchestratorType {
case api.DCOS:
switch orchestratorVersion {
case common.DCOSVersion1Dot8Dot8:
return dcosCustomData188
case common.DCOSVersion1Dot9Dot0:
return dcosCustomData190
case common.DCOSVersion1Dot9Dot8:
return dcosCustomData198
case common.DCOSVersion1Dot10Dot0:
return dcosCustomData110
case common.DCOSVersion1Dot11Dot0:
return dcos2CustomData1110
case common.DCOSVersion1Dot11Dot2:
return dcos2CustomData1112
}
default:
// it is a bug to get here
panic(fmt.Sprintf("BUG: invalid orchestrator %s", orchestratorType))
}
return ""
}
// getSingleLineForTemplate returns the file as a single line for embedding in an arm template
func getSingleLineDCOSCustomData(orchestratorType, yamlFilename string, masterCount int, replaceMap map[string]string) string {
b, err := Asset(yamlFilename)
if err != nil {
panic(fmt.Sprintf("BUG getting yaml custom data file: %s", err.Error()))
}
yamlStr := string(b)
for k, v := range replaceMap {
yamlStr = strings.Replace(yamlStr, k, v, -1)
}
// convert to json
jsonBytes, err4 := yaml.YAMLToJSON([]byte(yamlStr))
if err4 != nil {
panic(fmt.Sprintf("BUG: %s", err4.Error()))
}
yamlStr = string(jsonBytes)
// convert to one line
yamlStr = strings.Replace(yamlStr, "\\", "\\\\", -1)
yamlStr = strings.Replace(yamlStr, "\r\n", "\\n", -1)
yamlStr = strings.Replace(yamlStr, "\n", "\\n", -1)
yamlStr = strings.Replace(yamlStr, "\"", "\\\"", -1)
// variable replacement
rVariable, e1 := regexp.Compile("{{{([^}]*)}}}")
if e1 != nil {
panic(fmt.Sprintf("BUG: %s", e1.Error()))
}
yamlStr = rVariable.ReplaceAllString(yamlStr, "',variables('$1'),'")
// replace the internal values
publicIPStr := getDCOSCustomDataPublicIPStr(orchestratorType, masterCount)
yamlStr = strings.Replace(yamlStr, "DCOSCUSTOMDATAPUBLICIPSTR", publicIPStr, -1)
return yamlStr
}
func buildYamlFileWithWriteFiles(files []string) string {
clusterYamlFile := `#cloud-config
write_files:
%s
`
writeFileBlock := ` - encoding: gzip
content: !!binary |
%s
path: /opt/azure/containers/%s
permissions: "0744"
`
filelines := ""
for _, file := range files {
b64GzipString := getBase64EncodedGzippedCustomScript(file)
fileNoPath := strings.TrimPrefix(file, "swarm/")
filelines += fmt.Sprintf(writeFileBlock, b64GzipString, fileNoPath)
}
return fmt.Sprintf(clusterYamlFile, filelines)
}
func getKubernetesSubnets(properties *api.Properties) string {
subnetString := `{
"name": "podCIDR%d",
"properties": {
"addressPrefix": "10.244.%d.0/24",
"networkSecurityGroup": {
"id": "[variables('nsgID')]"
},
"routeTable": {
"id": "[variables('routeTableID')]"
}
}
}`
var buf bytes.Buffer
cidrIndex := getKubernetesPodStartIndex(properties)
for _, agentProfile := range properties.AgentPoolProfiles {
if agentProfile.OSType == api.Windows {
for i := 0; i < agentProfile.Count; i++ {
buf.WriteString(",\n")
buf.WriteString(fmt.Sprintf(subnetString, cidrIndex, cidrIndex))
cidrIndex++
}
}
}
return buf.String()
}
func getKubernetesPodStartIndex(properties *api.Properties) int {
nodeCount := 0
nodeCount += properties.MasterProfile.Count
for _, agentProfile := range properties.AgentPoolProfiles {
if agentProfile.OSType != api.Windows {
nodeCount += agentProfile.Count
}
}
return nodeCount + 1
}
// getLinkedTemplatesForExtensions returns the
// Microsoft.Resources/deployments for each extension
func getLinkedTemplatesForExtensions(properties *api.Properties) string {
var result string
extensions := properties.ExtensionProfiles
masterProfileExtensions := properties.MasterProfile.Extensions
orchestratorType := properties.OrchestratorProfile.OrchestratorType
for err, extensionProfile := range extensions {
_ = err
masterOptedForExtension, singleOrAll := validateProfileOptedForExtension(extensionProfile.Name, masterProfileExtensions)
if masterOptedForExtension {
result += ","
dta, e := getMasterLinkedTemplateText(orchestratorType, extensionProfile, singleOrAll)
if e != nil {
fmt.Println(e.Error())
return ""
}
result += dta
}
for _, agentPoolProfile := range properties.AgentPoolProfiles {
poolProfileExtensions := agentPoolProfile.Extensions
poolOptedForExtension, singleOrAll := validateProfileOptedForExtension(extensionProfile.Name, poolProfileExtensions)
if poolOptedForExtension {
result += ","
dta, e := getAgentPoolLinkedTemplateText(agentPoolProfile, orchestratorType, extensionProfile, singleOrAll)
if e != nil {
fmt.Println(e.Error())
return ""
}
result += dta
}
}
}
return result
}
func getMasterLinkedTemplateText(orchestratorType string, extensionProfile *api.ExtensionProfile, singleOrAll string) (string, error) {
extTargetVMNamePrefix := "variables('masterVMNamePrefix')"
loopCount := "[variables('masterCount')]"
loopOffset := ""
if orchestratorType == api.Kubernetes {
// Due to upgrade k8s sometimes needs to install just some of the nodes.
loopCount = "[sub(variables('masterCount'), variables('masterOffset'))]"
loopOffset = "variables('masterOffset')"
}
if strings.EqualFold(singleOrAll, "single") {
loopCount = "1"
}