502 lines
15 KiB
Go
502 lines
15 KiB
Go
//go:generate mapstructure-to-hcl2 -type Config
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// Package puppetmasterless implements a provisioner for Packer that executes
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// Puppet on the remote machine, configured to apply a local manifest
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// versus connecting to a Puppet master.
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package puppetmasterless
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import (
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"context"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"github.com/hashicorp/hcl/v2/hcldec"
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"github.com/hashicorp/packer-plugin-sdk/common"
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"github.com/hashicorp/packer-plugin-sdk/guestexec"
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packersdk "github.com/hashicorp/packer-plugin-sdk/packer"
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"github.com/hashicorp/packer-plugin-sdk/template/config"
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"github.com/hashicorp/packer-plugin-sdk/template/interpolate"
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)
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type Config struct {
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common.PackerConfig `mapstructure:",squash"`
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ctx interpolate.Context
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// If true, staging directory is removed after executing puppet.
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CleanStagingDir bool `mapstructure:"clean_staging_directory"`
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// The Guest OS Type (unix or windows)
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GuestOSType string `mapstructure:"guest_os_type"`
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// The command used to execute Puppet.
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ExecuteCommand string `mapstructure:"execute_command"`
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// Additional arguments to pass when executing Puppet
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ExtraArguments []string `mapstructure:"extra_arguments"`
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// Additional facts to set when executing Puppet
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Facter map[string]string
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// Path to a hiera configuration file to upload and use.
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HieraConfigPath string `mapstructure:"hiera_config_path"`
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// If true, packer will ignore all exit-codes from a puppet run
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IgnoreExitCodes bool `mapstructure:"ignore_exit_codes"`
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// An array of local paths of modules to upload.
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ModulePaths []string `mapstructure:"module_paths"`
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// The main manifest file to apply to kick off the entire thing.
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ManifestFile string `mapstructure:"manifest_file"`
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// A directory of manifest files that will be uploaded to the remote
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// machine.
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ManifestDir string `mapstructure:"manifest_dir"`
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// If true, `sudo` will NOT be used to execute Puppet.
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PreventSudo bool `mapstructure:"prevent_sudo"`
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// The directory that contains the puppet binary.
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// E.g. if it can't be found on the standard path.
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PuppetBinDir string `mapstructure:"puppet_bin_dir"`
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// The directory where files will be uploaded. Packer requires write
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// permissions in this directory.
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StagingDir string `mapstructure:"staging_directory"`
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// The directory from which the command will be executed.
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// Packer requires the directory to exist when running puppet.
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WorkingDir string `mapstructure:"working_directory"`
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// Instructs the communicator to run the remote script as a Windows
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// scheduled task, effectively elevating the remote user by impersonating
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// a logged-in user
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ElevatedUser string `mapstructure:"elevated_user"`
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ElevatedPassword string `mapstructure:"elevated_password"`
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}
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type guestOSTypeConfig struct {
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executeCommand string
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facterVarsFmt string
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facterVarsJoiner string
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modulePathJoiner string
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stagingDir string
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tempDir string
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}
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// FIXME assumes both Packer host and target are same OS
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var guestOSTypeConfigs = map[string]guestOSTypeConfig{
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guestexec.UnixOSType: {
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tempDir: "/tmp",
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stagingDir: "/tmp/packer-puppet-masterless",
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executeCommand: "cd {{.WorkingDir}} && " +
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`{{if ne .FacterVars ""}}{{.FacterVars}} {{end}}` +
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"{{if .Sudo}}sudo -E {{end}}" +
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`{{if ne .PuppetBinDir ""}}{{.PuppetBinDir}}/{{end}}` +
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"puppet apply --detailed-exitcodes " +
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"{{if .Debug}}--debug {{end}}" +
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`{{if ne .ModulePath ""}}--modulepath='{{.ModulePath}}' {{end}}` +
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`{{if ne .HieraConfigPath ""}}--hiera_config='{{.HieraConfigPath}}' {{end}}` +
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`{{if ne .ManifestDir ""}}--manifestdir='{{.ManifestDir}}' {{end}}` +
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`{{if ne .ExtraArguments ""}}{{.ExtraArguments}} {{end}}` +
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"{{.ManifestFile}}",
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facterVarsFmt: "FACTER_%s='%s'",
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facterVarsJoiner: " ",
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modulePathJoiner: ":",
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},
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guestexec.WindowsOSType: {
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tempDir: filepath.ToSlash(os.Getenv("TEMP")),
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stagingDir: filepath.ToSlash(os.Getenv("SYSTEMROOT")) + "/Temp/packer-puppet-masterless",
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executeCommand: "cd {{.WorkingDir}} && " +
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`{{if ne .FacterVars ""}}{{.FacterVars}} && {{end}}` +
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`{{if ne .PuppetBinDir ""}}{{.PuppetBinDir}}/{{end}}` +
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"puppet apply --detailed-exitcodes " +
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"{{if .Debug}}--debug {{end}}" +
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`{{if ne .ModulePath ""}}--modulepath='{{.ModulePath}}' {{end}}` +
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`{{if ne .HieraConfigPath ""}}--hiera_config='{{.HieraConfigPath}}' {{end}}` +
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`{{if ne .ManifestDir ""}}--manifestdir='{{.ManifestDir}}' {{end}}` +
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`{{if ne .ExtraArguments ""}}{{.ExtraArguments}} {{end}}` +
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"{{.ManifestFile}}",
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facterVarsFmt: `SET "FACTER_%s=%s"`,
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facterVarsJoiner: " & ",
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modulePathJoiner: ";",
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},
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}
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type Provisioner struct {
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config Config
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communicator packersdk.Communicator
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guestOSTypeConfig guestOSTypeConfig
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guestCommands *guestexec.GuestCommands
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generatedData map[string]interface{}
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}
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type ExecuteTemplate struct {
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Debug bool
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ExtraArguments string
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FacterVars string
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HieraConfigPath string
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ModulePath string
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ModulePathJoiner string
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ManifestFile string
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ManifestDir string
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PuppetBinDir string
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Sudo bool
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WorkingDir string
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}
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type EnvVarsTemplate struct {
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WinRMPassword string
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}
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func (p *Provisioner) ConfigSpec() hcldec.ObjectSpec { return p.config.FlatMapstructure().HCL2Spec() }
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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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PluginType: "puppet-masterless",
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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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"extra_arguments",
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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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// Set some defaults
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if p.config.GuestOSType == "" {
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p.config.GuestOSType = guestexec.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 = guestexec.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.StagingDir == "" {
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p.config.StagingDir = p.guestOSTypeConfig.stagingDir
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}
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if p.config.WorkingDir == "" {
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p.config.WorkingDir = p.config.StagingDir
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}
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if p.config.Facter == nil {
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p.config.Facter = make(map[string]string)
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}
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p.config.Facter["packer_build_name"] = p.config.PackerBuildName
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p.config.Facter["packer_builder_type"] = p.config.PackerBuilderType
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// Validation
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var errs *packersdk.MultiError
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if p.config.HieraConfigPath != "" {
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info, err := os.Stat(p.config.HieraConfigPath)
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if err != nil {
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errs = packersdk.MultiErrorAppend(errs,
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fmt.Errorf("hiera_config_path is invalid: %s", err))
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} else if info.IsDir() {
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errs = packersdk.MultiErrorAppend(errs,
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fmt.Errorf("hiera_config_path must point to a file"))
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}
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}
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if p.config.ManifestDir != "" {
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info, err := os.Stat(p.config.ManifestDir)
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if err != nil {
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errs = packersdk.MultiErrorAppend(errs,
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fmt.Errorf("manifest_dir is invalid: %s", err))
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} else if !info.IsDir() {
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errs = packersdk.MultiErrorAppend(errs,
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fmt.Errorf("manifest_dir must point to a directory"))
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}
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}
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if p.config.ManifestFile == "" {
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errs = packersdk.MultiErrorAppend(errs,
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fmt.Errorf("A manifest_file must be specified."))
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} else {
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_, err := os.Stat(p.config.ManifestFile)
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if err != nil {
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errs = packersdk.MultiErrorAppend(errs,
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fmt.Errorf("manifest_file is invalid: %s", err))
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}
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}
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for i, path := range p.config.ModulePaths {
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info, err := os.Stat(path)
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if err != nil {
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errs = packersdk.MultiErrorAppend(errs,
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fmt.Errorf("module_path[%d] is invalid: %s", i, err))
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} else if !info.IsDir() {
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errs = packersdk.MultiErrorAppend(errs,
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fmt.Errorf("module_path[%d] must point to a directory", i))
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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(ctx context.Context, ui packersdk.Ui, comm packersdk.Communicator, generatedData map[string]interface{}) error {
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ui.Say("Provisioning with Puppet...")
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p.communicator = comm
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p.generatedData = generatedData
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ui.Message("Creating Puppet staging directory...")
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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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// Upload hiera config if set
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remoteHieraConfigPath := ""
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if p.config.HieraConfigPath != "" {
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var err error
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remoteHieraConfigPath, err = p.uploadHieraConfig(ui, comm)
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if err != nil {
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return fmt.Errorf("Error uploading hiera config: %s", err)
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}
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}
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// Upload manifest dir if set
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remoteManifestDir := ""
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if p.config.ManifestDir != "" {
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ui.Message(fmt.Sprintf(
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"Uploading manifest directory from: %s", p.config.ManifestDir))
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remoteManifestDir = fmt.Sprintf("%s/manifests", p.config.StagingDir)
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err := p.uploadDirectory(ui, comm, remoteManifestDir, p.config.ManifestDir)
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if err != nil {
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return fmt.Errorf("Error uploading manifest dir: %s", err)
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}
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}
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// Upload all modules
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modulePaths := make([]string, 0, len(p.config.ModulePaths))
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for i, path := range p.config.ModulePaths {
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ui.Message(fmt.Sprintf("Uploading local modules from: %s", path))
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targetPath := fmt.Sprintf("%s/module-%d", p.config.StagingDir, i)
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if err := p.uploadDirectory(ui, comm, targetPath, path); err != nil {
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return fmt.Errorf("Error uploading modules: %s", err)
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}
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modulePaths = append(modulePaths, targetPath)
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}
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// Upload manifests
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remoteManifestFile, err := p.uploadManifests(ui, comm)
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if err != nil {
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return fmt.Errorf("Error uploading manifests: %s", err)
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}
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// Compile the facter variables
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facterVars := make([]string, 0, len(p.config.Facter))
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for k, v := range p.config.Facter {
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facterVars = append(facterVars, fmt.Sprintf(p.guestOSTypeConfig.facterVarsFmt, k, v))
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}
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data := ExecuteTemplate{
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ExtraArguments: "",
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FacterVars: strings.Join(facterVars, p.guestOSTypeConfig.facterVarsJoiner),
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HieraConfigPath: remoteHieraConfigPath,
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ManifestDir: remoteManifestDir,
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ManifestFile: remoteManifestFile,
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ModulePath: strings.Join(modulePaths, p.guestOSTypeConfig.modulePathJoiner),
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ModulePathJoiner: p.guestOSTypeConfig.modulePathJoiner,
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PuppetBinDir: p.config.PuppetBinDir,
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Sudo: !p.config.PreventSudo,
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WorkingDir: p.config.WorkingDir,
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}
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p.config.ctx.Data = &data
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_ExtraArguments, err := interpolate.Render(strings.Join(p.config.ExtraArguments, " "), &p.config.ctx)
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if err != nil {
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return err
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}
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data.ExtraArguments = _ExtraArguments
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command, err := interpolate.Render(p.config.ExecuteCommand, &p.config.ctx)
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if err != nil {
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return err
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}
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if p.config.ElevatedUser != "" {
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command, err = guestexec.GenerateElevatedRunner(command, p)
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if err != nil {
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return err
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}
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}
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cmd := &packersdk.RemoteCmd{
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Command: command,
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}
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ui.Message(fmt.Sprintf("Running Puppet: %s", command))
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if err := cmd.RunWithUi(ctx, comm, ui); err != nil {
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return fmt.Errorf("Got an error starting command: %s", err)
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}
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if cmd.ExitStatus() != 0 && cmd.ExitStatus() != 2 && !p.config.IgnoreExitCodes {
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return fmt.Errorf("Puppet exited with a non-zero exit status: %d", cmd.ExitStatus())
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}
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if p.config.CleanStagingDir {
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if err := p.removeDir(ui, comm, p.config.StagingDir); err != nil {
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return fmt.Errorf("Error removing staging directory: %s", err)
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}
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}
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return nil
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}
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func (p *Provisioner) uploadHieraConfig(ui packersdk.Ui, comm packersdk.Communicator) (string, error) {
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ui.Message("Uploading hiera configuration...")
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f, err := os.Open(p.config.HieraConfigPath)
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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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path := fmt.Sprintf("%s/hiera.yaml", p.config.StagingDir)
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if err := comm.Upload(path, f, nil); err != nil {
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return "", err
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}
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return path, nil
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}
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func (p *Provisioner) uploadManifests(ui packersdk.Ui, comm packersdk.Communicator) (string, error) {
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// Create the remote manifests directory...
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ui.Message("Uploading manifests...")
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remoteManifestsPath := fmt.Sprintf("%s/manifests", p.config.StagingDir)
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if err := p.createDir(ui, comm, remoteManifestsPath); err != nil {
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return "", fmt.Errorf("Error creating manifests directory: %s", err)
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}
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// NOTE! manifest_file may either be a directory or a file, as puppet apply
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// now accepts either one.
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fi, err := os.Stat(p.config.ManifestFile)
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if err != nil {
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return "", fmt.Errorf("Error inspecting manifest file: %s", err)
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}
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if fi.IsDir() {
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// If manifest_file is a directory we'll upload the whole thing
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ui.Message(fmt.Sprintf(
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"Uploading manifest directory from: %s", p.config.ManifestFile))
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remoteManifestDir := fmt.Sprintf("%s/manifests", p.config.StagingDir)
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err := p.uploadDirectory(ui, comm, remoteManifestDir, p.config.ManifestFile)
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if err != nil {
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return "", fmt.Errorf("Error uploading manifest dir: %s", err)
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}
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return remoteManifestDir, nil
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}
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// Otherwise manifest_file is a file and we'll upload it
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ui.Message(fmt.Sprintf(
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"Uploading manifest file from: %s", p.config.ManifestFile))
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f, err := os.Open(p.config.ManifestFile)
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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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manifestFilename := filepath.Base(p.config.ManifestFile)
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remoteManifestFile := fmt.Sprintf("%s/%s", remoteManifestsPath, manifestFilename)
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if err := comm.Upload(remoteManifestFile, f, nil); err != nil {
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return "", err
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}
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return remoteManifestFile, nil
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}
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func (p *Provisioner) createDir(ui packersdk.Ui, comm packersdk.Communicator, dir string) error {
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ui.Message(fmt.Sprintf("Creating directory: %s", dir))
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cmd := &packersdk.RemoteCmd{Command: p.guestCommands.CreateDir(dir)}
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ctx := context.TODO()
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if err := cmd.RunWithUi(ctx, 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.")
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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 = &packersdk.RemoteCmd{Command: p.guestCommands.Chmod(dir, "0777")}
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if err := cmd.RunWithUi(ctx, 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) removeDir(ui packersdk.Ui, comm packersdk.Communicator, dir string) error {
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ctx := context.TODO()
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cmd := &packersdk.RemoteCmd{Command: p.guestCommands.RemoveDir(dir)}
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if err := cmd.RunWithUi(ctx, 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.")
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}
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return nil
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}
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func (p *Provisioner) uploadDirectory(ui packersdk.Ui, comm packersdk.Communicator, dst string, src string) error {
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if err := p.createDir(ui, comm, dst); err != nil {
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return err
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}
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// Make sure there is a trailing "/" so that the directory isn't
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// created on the other side.
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if src[len(src)-1] != '/' {
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src = src + "/"
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}
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return comm.UploadDir(dst, src, nil)
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}
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func (p *Provisioner) Communicator() packersdk.Communicator {
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return p.communicator
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}
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func (p *Provisioner) ElevatedUser() string {
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return p.config.ElevatedUser
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}
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func (p *Provisioner) ElevatedPassword() string {
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// Replace ElevatedPassword for winrm users who used this feature
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p.config.ctx.Data = p.generatedData
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elevatedPassword, _ := interpolate.Render(p.config.ElevatedPassword, &p.config.ctx)
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return elevatedPassword
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}
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