700 lines
19 KiB
Go
700 lines
19 KiB
Go
// This package implements a provisioner for Packer that uses
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// Chef to provision the remote machine, specifically with chef-client (that is,
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// with a Chef server).
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package chefclient
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"os"
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"path/filepath"
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"strings"
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"github.com/hashicorp/packer/common"
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"github.com/hashicorp/packer/common/uuid"
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"github.com/hashicorp/packer/helper/config"
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"github.com/hashicorp/packer/packer"
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"github.com/hashicorp/packer/provisioner"
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"github.com/hashicorp/packer/template/interpolate"
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)
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type guestOSTypeConfig struct {
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executeCommand string
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installCommand string
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knifeCommand string
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stagingDir string
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}
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var guestOSTypeConfigs = map[string]guestOSTypeConfig{
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provisioner.UnixOSType: {
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executeCommand: "{{if .Sudo}}sudo {{end}}chef-client --no-color -c {{.ConfigPath}} -j {{.JsonPath}}",
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installCommand: "curl -L https://www.chef.io/chef/install.sh | {{if .Sudo}}sudo {{end}}bash",
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knifeCommand: "{{if .Sudo}}sudo {{end}}knife {{.Args}} {{.Flags}}",
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stagingDir: "/tmp/packer-chef-client",
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},
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provisioner.WindowsOSType: {
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executeCommand: "c:/opscode/chef/bin/chef-client.bat --no-color -c {{.ConfigPath}} -j {{.JsonPath}}",
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installCommand: "powershell.exe -Command \"(New-Object System.Net.WebClient).DownloadFile('http://chef.io/chef/install.msi', 'C:\\Windows\\Temp\\chef.msi');Start-Process 'msiexec' -ArgumentList '/qb /i C:\\Windows\\Temp\\chef.msi' -NoNewWindow -Wait\"",
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knifeCommand: "c:/opscode/chef/bin/knife.bat {{.Args}} {{.Flags}}",
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stagingDir: "C:/Windows/Temp/packer-chef-client",
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},
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}
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type Config struct {
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common.PackerConfig `mapstructure:",squash"`
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Json map[string]interface{}
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ChefEnvironment string `mapstructure:"chef_environment"`
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ClientKey string `mapstructure:"client_key"`
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ConfigTemplate string `mapstructure:"config_template"`
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EncryptedDataBagSecretPath string `mapstructure:"encrypted_data_bag_secret_path"`
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ExecuteCommand string `mapstructure:"execute_command"`
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GuestOSType string `mapstructure:"guest_os_type"`
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InstallCommand string `mapstructure:"install_command"`
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KnifeCommand string `mapstructure:"knife_command"`
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NodeName string `mapstructure:"node_name"`
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PreventSudo bool `mapstructure:"prevent_sudo"`
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RunList []string `mapstructure:"run_list"`
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ServerUrl string `mapstructure:"server_url"`
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SkipCleanClient bool `mapstructure:"skip_clean_client"`
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SkipCleanNode bool `mapstructure:"skip_clean_node"`
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SkipInstall bool `mapstructure:"skip_install"`
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SslVerifyMode string `mapstructure:"ssl_verify_mode"`
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StagingDir string `mapstructure:"staging_directory"`
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ValidationClientName string `mapstructure:"validation_client_name"`
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ValidationKeyPath string `mapstructure:"validation_key_path"`
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ctx interpolate.Context
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}
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type Provisioner struct {
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config Config
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guestOSTypeConfig guestOSTypeConfig
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guestCommands *provisioner.GuestCommands
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}
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type ConfigTemplate struct {
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ChefEnvironment string
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ClientKey string
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EncryptedDataBagSecretPath string
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NodeName string
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ServerUrl string
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SslVerifyMode string
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ValidationClientName string
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ValidationKeyPath string
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}
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type ExecuteTemplate struct {
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ConfigPath string
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JsonPath string
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Sudo bool
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}
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type InstallChefTemplate struct {
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Sudo bool
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}
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type KnifeTemplate struct {
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Sudo bool
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Flags string
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Args string
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}
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func (p *Provisioner) Prepare(raws ...interface{}) error {
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err := config.Decode(&p.config, &config.DecodeOpts{
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Interpolate: true,
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InterpolateContext: &p.config.ctx,
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InterpolateFilter: &interpolate.RenderFilter{
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Exclude: []string{
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"execute_command",
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"install_command",
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"knife_command",
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},
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},
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}, raws...)
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if err != nil {
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return err
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}
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if p.config.GuestOSType == "" {
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p.config.GuestOSType = provisioner.DefaultOSType
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}
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p.config.GuestOSType = strings.ToLower(p.config.GuestOSType)
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var ok bool
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p.guestOSTypeConfig, ok = guestOSTypeConfigs[p.config.GuestOSType]
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if !ok {
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return fmt.Errorf("Invalid guest_os_type: \"%s\"", p.config.GuestOSType)
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}
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p.guestCommands, err = provisioner.NewGuestCommands(p.config.GuestOSType, !p.config.PreventSudo)
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if err != nil {
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return fmt.Errorf("Invalid guest_os_type: \"%s\"", p.config.GuestOSType)
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}
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if p.config.ExecuteCommand == "" {
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p.config.ExecuteCommand = p.guestOSTypeConfig.executeCommand
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}
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if p.config.InstallCommand == "" {
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p.config.InstallCommand = p.guestOSTypeConfig.installCommand
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}
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if p.config.RunList == nil {
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p.config.RunList = make([]string, 0)
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}
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if p.config.StagingDir == "" {
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p.config.StagingDir = p.guestOSTypeConfig.stagingDir
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}
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if p.config.KnifeCommand == "" {
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p.config.KnifeCommand = p.guestOSTypeConfig.knifeCommand
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}
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var errs *packer.MultiError
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if p.config.ConfigTemplate != "" {
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fi, err := os.Stat(p.config.ConfigTemplate)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Bad config template path: %s", err))
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} else if fi.IsDir() {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Config template path must be a file: %s", err))
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}
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}
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if p.config.EncryptedDataBagSecretPath != "" {
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pFileInfo, err := os.Stat(p.config.EncryptedDataBagSecretPath)
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if err != nil || pFileInfo.IsDir() {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Bad encrypted data bag secret '%s': %s", p.config.EncryptedDataBagSecretPath, err))
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}
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}
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if p.config.ServerUrl == "" {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("server_url must be set"))
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}
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if p.config.EncryptedDataBagSecretPath != "" {
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pFileInfo, err := os.Stat(p.config.EncryptedDataBagSecretPath)
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if err != nil || pFileInfo.IsDir() {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Bad encrypted data bag secret '%s': %s", p.config.EncryptedDataBagSecretPath, err))
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}
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}
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jsonValid := true
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for k, v := range p.config.Json {
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p.config.Json[k], err = p.deepJsonFix(k, v)
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Error processing JSON: %s", err))
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jsonValid = false
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}
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}
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if jsonValid {
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// Process the user variables within the JSON and set the JSON.
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// Do this early so that we can validate and show errors.
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p.config.Json, err = p.processJsonUserVars()
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if err != nil {
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errs = packer.MultiErrorAppend(
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errs, fmt.Errorf("Error processing user variables in JSON: %s", err))
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}
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}
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if errs != nil && len(errs.Errors) > 0 {
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return errs
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}
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return nil
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}
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func (p *Provisioner) Provision(ui packer.Ui, comm packer.Communicator) error {
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nodeName := p.config.NodeName
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if nodeName == "" {
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nodeName = fmt.Sprintf("packer-%s", uuid.TimeOrderedUUID())
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}
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remoteValidationKeyPath := ""
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serverUrl := p.config.ServerUrl
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if !p.config.SkipInstall {
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if err := p.installChef(ui, comm); err != nil {
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return fmt.Errorf("Error installing Chef: %s", err)
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}
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}
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if err := p.createDir(ui, comm, p.config.StagingDir); err != nil {
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return fmt.Errorf("Error creating staging directory: %s", err)
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}
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if p.config.ClientKey == "" {
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p.config.ClientKey = fmt.Sprintf("%s/client.pem", p.config.StagingDir)
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}
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encryptedDataBagSecretPath := ""
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if p.config.EncryptedDataBagSecretPath != "" {
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encryptedDataBagSecretPath = fmt.Sprintf("%s/encrypted_data_bag_secret", p.config.StagingDir)
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if err := p.uploadFile(ui,
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comm,
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encryptedDataBagSecretPath,
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p.config.EncryptedDataBagSecretPath); err != nil {
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return fmt.Errorf("Error uploading encrypted data bag secret: %s", err)
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}
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}
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if p.config.ValidationKeyPath != "" {
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remoteValidationKeyPath = fmt.Sprintf("%s/validation.pem", p.config.StagingDir)
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if err := p.uploadFile(ui, comm, remoteValidationKeyPath, p.config.ValidationKeyPath); err != nil {
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return fmt.Errorf("Error copying validation key: %s", err)
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}
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}
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configPath, err := p.createConfig(
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ui,
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comm,
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nodeName,
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serverUrl,
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p.config.ClientKey,
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encryptedDataBagSecretPath,
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remoteValidationKeyPath,
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p.config.ValidationClientName,
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p.config.ChefEnvironment,
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p.config.SslVerifyMode)
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if err != nil {
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return fmt.Errorf("Error creating Chef config file: %s", err)
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}
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jsonPath, err := p.createJson(ui, comm)
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if err != nil {
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return fmt.Errorf("Error creating JSON attributes: %s", err)
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}
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err = p.executeChef(ui, comm, configPath, jsonPath)
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if !(p.config.SkipCleanNode && p.config.SkipCleanClient) {
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knifeConfigPath, knifeErr := p.createKnifeConfig(
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ui, comm, nodeName, serverUrl, p.config.ClientKey, p.config.SslVerifyMode)
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if knifeErr != nil {
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return fmt.Errorf("Error creating knife config on node: %s", knifeErr)
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}
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if !p.config.SkipCleanNode {
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if err := p.cleanNode(ui, comm, nodeName, knifeConfigPath); err != nil {
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return fmt.Errorf("Error cleaning up chef node: %s", err)
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}
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}
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if !p.config.SkipCleanClient {
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if err := p.cleanClient(ui, comm, nodeName, knifeConfigPath); err != nil {
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return fmt.Errorf("Error cleaning up chef client: %s", err)
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}
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}
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}
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if err != nil {
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return fmt.Errorf("Error executing Chef: %s", err)
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}
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if err := p.removeDir(ui, comm, p.config.StagingDir); err != nil {
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return fmt.Errorf("Error removing %s: %s", p.config.StagingDir, err)
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}
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return nil
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}
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func (p *Provisioner) Cancel() {
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// Just hard quit. It isn't a big deal if what we're doing keeps
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// running on the other side.
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os.Exit(0)
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}
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func (p *Provisioner) uploadFile(ui packer.Ui, comm packer.Communicator, remotePath string, localPath string) error {
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ui.Message(fmt.Sprintf("Uploading %s...", localPath))
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f, err := os.Open(localPath)
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if err != nil {
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return err
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}
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defer f.Close()
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return comm.Upload(remotePath, f, nil)
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}
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func (p *Provisioner) createConfig(
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ui packer.Ui,
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comm packer.Communicator,
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nodeName string,
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serverUrl string,
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clientKey string,
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encryptedDataBagSecretPath,
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remoteKeyPath string,
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validationClientName string,
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chefEnvironment string,
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sslVerifyMode string) (string, error) {
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ui.Message("Creating configuration file 'client.rb'")
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// Read the template
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tpl := DefaultConfigTemplate
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if p.config.ConfigTemplate != "" {
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f, err := os.Open(p.config.ConfigTemplate)
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if err != nil {
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return "", err
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}
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defer f.Close()
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tplBytes, err := ioutil.ReadAll(f)
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if err != nil {
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return "", err
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}
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tpl = string(tplBytes)
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}
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ctx := p.config.ctx
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ctx.Data = &ConfigTemplate{
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NodeName: nodeName,
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ServerUrl: serverUrl,
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ClientKey: clientKey,
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ValidationKeyPath: remoteKeyPath,
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ValidationClientName: validationClientName,
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ChefEnvironment: chefEnvironment,
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SslVerifyMode: sslVerifyMode,
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EncryptedDataBagSecretPath: encryptedDataBagSecretPath,
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}
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configString, err := interpolate.Render(tpl, &ctx)
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if err != nil {
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return "", err
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}
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remotePath := filepath.ToSlash(filepath.Join(p.config.StagingDir, "client.rb"))
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if err := comm.Upload(remotePath, bytes.NewReader([]byte(configString)), nil); err != nil {
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return "", err
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}
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return remotePath, nil
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}
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func (p *Provisioner) createKnifeConfig(ui packer.Ui, comm packer.Communicator, nodeName string, serverUrl string, clientKey string, sslVerifyMode string) (string, error) {
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ui.Message("Creating configuration file 'knife.rb'")
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// Read the template
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tpl := DefaultKnifeTemplate
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ctx := p.config.ctx
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ctx.Data = &ConfigTemplate{
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NodeName: nodeName,
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ServerUrl: serverUrl,
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ClientKey: clientKey,
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SslVerifyMode: sslVerifyMode,
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}
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configString, err := interpolate.Render(tpl, &ctx)
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if err != nil {
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return "", err
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}
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remotePath := filepath.ToSlash(filepath.Join(p.config.StagingDir, "knife.rb"))
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if err := comm.Upload(remotePath, bytes.NewReader([]byte(configString)), nil); err != nil {
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return "", err
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}
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return remotePath, nil
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}
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func (p *Provisioner) createJson(ui packer.Ui, comm packer.Communicator) (string, error) {
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ui.Message("Creating JSON attribute file")
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jsonData := make(map[string]interface{})
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// Copy the configured JSON
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for k, v := range p.config.Json {
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jsonData[k] = v
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}
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// Set the run list if it was specified
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if len(p.config.RunList) > 0 {
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jsonData["run_list"] = p.config.RunList
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}
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jsonBytes, err := json.MarshalIndent(jsonData, "", " ")
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if err != nil {
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return "", err
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}
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// Upload the bytes
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remotePath := filepath.ToSlash(filepath.Join(p.config.StagingDir, "first-boot.json"))
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if err := comm.Upload(remotePath, bytes.NewReader(jsonBytes), nil); err != nil {
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return "", err
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}
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return remotePath, nil
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}
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func (p *Provisioner) createDir(ui packer.Ui, comm packer.Communicator, dir string) error {
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ui.Message(fmt.Sprintf("Creating directory: %s", dir))
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cmd := &packer.RemoteCmd{Command: p.guestCommands.CreateDir(dir)}
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if err := cmd.StartWithUi(comm, ui); err != nil {
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return err
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}
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if cmd.ExitStatus != 0 {
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return fmt.Errorf("Non-zero exit status. See output above for more info.")
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}
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// Chmod the directory to 0777 just so that we can access it as our user
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cmd = &packer.RemoteCmd{Command: p.guestCommands.Chmod(dir, "0777")}
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if err := cmd.StartWithUi(comm, ui); err != nil {
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return err
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}
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if cmd.ExitStatus != 0 {
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return fmt.Errorf("Non-zero exit status. See output above for more info.")
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}
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return nil
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}
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func (p *Provisioner) cleanNode(ui packer.Ui, comm packer.Communicator, node string, knifeConfigPath string) error {
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ui.Say("Cleaning up chef node...")
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args := []string{"node", "delete", node}
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if err := p.knifeExec(ui, comm, node, knifeConfigPath, args); err != nil {
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return fmt.Errorf("Failed to cleanup node: %s", err)
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}
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return nil
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}
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func (p *Provisioner) cleanClient(ui packer.Ui, comm packer.Communicator, node string, knifeConfigPath string) error {
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ui.Say("Cleaning up chef client...")
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args := []string{"client", "delete", node}
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if err := p.knifeExec(ui, comm, node, knifeConfigPath, args); err != nil {
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return fmt.Errorf("Failed to cleanup client: %s", err)
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}
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return nil
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}
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func (p *Provisioner) knifeExec(ui packer.Ui, comm packer.Communicator, node string, knifeConfigPath string, args []string) error {
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flags := []string{
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"-y",
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"-c", knifeConfigPath,
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}
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p.config.ctx.Data = &KnifeTemplate{
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Sudo: !p.config.PreventSudo,
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Flags: strings.Join(flags, " "),
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Args: strings.Join(args, " "),
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}
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command, err := interpolate.Render(p.config.KnifeCommand, &p.config.ctx)
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if err != nil {
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return err
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}
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cmd := &packer.RemoteCmd{Command: command}
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if err := cmd.StartWithUi(comm, ui); err != nil {
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return err
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}
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if cmd.ExitStatus != 0 {
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return fmt.Errorf(
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"Non-zero exit status. See output above for more info.\n\n"+
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"Command: %s",
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command)
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}
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return nil
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}
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func (p *Provisioner) removeDir(ui packer.Ui, comm packer.Communicator, dir string) error {
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ui.Message(fmt.Sprintf("Removing directory: %s", dir))
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|
|
cmd := &packer.RemoteCmd{Command: p.guestCommands.RemoveDir(dir)}
|
|
if err := cmd.StartWithUi(comm, ui); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (p *Provisioner) executeChef(ui packer.Ui, comm packer.Communicator, config string, json string) error {
|
|
p.config.ctx.Data = &ExecuteTemplate{
|
|
ConfigPath: config,
|
|
JsonPath: json,
|
|
Sudo: !p.config.PreventSudo,
|
|
}
|
|
command, err := interpolate.Render(p.config.ExecuteCommand, &p.config.ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
ui.Message(fmt.Sprintf("Executing Chef: %s", command))
|
|
|
|
cmd := &packer.RemoteCmd{
|
|
Command: command,
|
|
}
|
|
|
|
if err := cmd.StartWithUi(comm, ui); err != nil {
|
|
return err
|
|
}
|
|
|
|
if cmd.ExitStatus != 0 {
|
|
return fmt.Errorf("Non-zero exit status: %d", cmd.ExitStatus)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (p *Provisioner) installChef(ui packer.Ui, comm packer.Communicator) error {
|
|
ui.Message("Installing Chef...")
|
|
|
|
p.config.ctx.Data = &InstallChefTemplate{
|
|
Sudo: !p.config.PreventSudo,
|
|
}
|
|
command, err := interpolate.Render(p.config.InstallCommand, &p.config.ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
ui.Message(command)
|
|
|
|
cmd := &packer.RemoteCmd{Command: command}
|
|
if err := cmd.StartWithUi(comm, ui); err != nil {
|
|
return err
|
|
}
|
|
|
|
if cmd.ExitStatus != 0 {
|
|
return fmt.Errorf(
|
|
"Install script exited with non-zero exit status %d", cmd.ExitStatus)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (p *Provisioner) deepJsonFix(key string, current interface{}) (interface{}, error) {
|
|
if current == nil {
|
|
return nil, nil
|
|
}
|
|
|
|
switch c := current.(type) {
|
|
case []interface{}:
|
|
val := make([]interface{}, len(c))
|
|
for i, v := range c {
|
|
var err error
|
|
val[i], err = p.deepJsonFix(fmt.Sprintf("%s[%d]", key, i), v)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return val, nil
|
|
case []uint8:
|
|
return string(c), nil
|
|
case map[interface{}]interface{}:
|
|
val := make(map[string]interface{})
|
|
for k, v := range c {
|
|
ks, ok := k.(string)
|
|
if !ok {
|
|
return nil, fmt.Errorf("%s: key is not string", key)
|
|
}
|
|
|
|
var err error
|
|
val[ks], err = p.deepJsonFix(
|
|
fmt.Sprintf("%s.%s", key, ks), v)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return val, nil
|
|
default:
|
|
return current, nil
|
|
}
|
|
}
|
|
|
|
func (p *Provisioner) processJsonUserVars() (map[string]interface{}, error) {
|
|
jsonBytes, err := json.Marshal(p.config.Json)
|
|
if err != nil {
|
|
// This really shouldn't happen since we literally just unmarshalled
|
|
panic(err)
|
|
}
|
|
|
|
// Copy the user variables so that we can restore them later, and
|
|
// make sure we make the quotes JSON-friendly in the user variables.
|
|
originalUserVars := make(map[string]string)
|
|
for k, v := range p.config.ctx.UserVariables {
|
|
originalUserVars[k] = v
|
|
}
|
|
|
|
// Make sure we reset them no matter what
|
|
defer func() {
|
|
p.config.ctx.UserVariables = originalUserVars
|
|
}()
|
|
|
|
// Make the current user variables JSON string safe.
|
|
for k, v := range p.config.ctx.UserVariables {
|
|
v = strings.Replace(v, `\`, `\\`, -1)
|
|
v = strings.Replace(v, `"`, `\"`, -1)
|
|
p.config.ctx.UserVariables[k] = v
|
|
}
|
|
|
|
// Process the bytes with the template processor
|
|
p.config.ctx.Data = nil
|
|
jsonBytesProcessed, err := interpolate.Render(string(jsonBytes), &p.config.ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var result map[string]interface{}
|
|
if err := json.Unmarshal([]byte(jsonBytesProcessed), &result); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return result, nil
|
|
}
|
|
|
|
var DefaultConfigTemplate = `
|
|
log_level :info
|
|
log_location STDOUT
|
|
chef_server_url "{{.ServerUrl}}"
|
|
client_key "{{.ClientKey}}"
|
|
{{if ne .EncryptedDataBagSecretPath ""}}
|
|
encrypted_data_bag_secret "{{.EncryptedDataBagSecretPath}}"
|
|
{{end}}
|
|
{{if ne .ValidationClientName ""}}
|
|
validation_client_name "{{.ValidationClientName}}"
|
|
{{else}}
|
|
validation_client_name "chef-validator"
|
|
{{end}}
|
|
{{if ne .ValidationKeyPath ""}}
|
|
validation_key "{{.ValidationKeyPath}}"
|
|
{{end}}
|
|
node_name "{{.NodeName}}"
|
|
{{if ne .ChefEnvironment ""}}
|
|
environment "{{.ChefEnvironment}}"
|
|
{{end}}
|
|
{{if ne .SslVerifyMode ""}}
|
|
ssl_verify_mode :{{.SslVerifyMode}}
|
|
{{end}}
|
|
`
|
|
|
|
var DefaultKnifeTemplate = `
|
|
log_level :info
|
|
log_location STDOUT
|
|
chef_server_url "{{.ServerUrl}}"
|
|
client_key "{{.ClientKey}}"
|
|
node_name "{{.NodeName}}"
|
|
{{if ne .SslVerifyMode ""}}
|
|
ssl_verify_mode :{{.SslVerifyMode}}
|
|
{{end}}
|
|
`
|