278 lines
10 KiB
Go
278 lines
10 KiB
Go
package daemon // import "github.com/docker/docker/daemon"
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import (
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"encoding/json"
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"fmt"
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"strconv"
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"github.com/docker/docker/daemon/config"
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"github.com/sirupsen/logrus"
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)
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// Reload reads configuration changes and modifies the
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// daemon according to those changes.
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// These are the settings that Reload changes:
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// - Platform runtime
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// - Daemon debug log level
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// - Daemon max concurrent downloads
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// - Daemon max concurrent uploads
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// - Daemon max download attempts
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// - Daemon shutdown timeout (in seconds)
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// - Cluster discovery (reconfigure and restart)
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// - Daemon labels
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// - Insecure registries
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// - Registry mirrors
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// - Daemon live restore
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func (daemon *Daemon) Reload(conf *config.Config) (err error) {
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daemon.configStore.Lock()
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attributes := map[string]string{}
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defer func() {
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if err == nil {
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jsonString, _ := json.Marshal(&struct {
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*config.Config
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config.Proxies `json:"proxies"`
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}{
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Config: daemon.configStore,
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Proxies: config.Proxies{
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HTTPProxy: config.MaskCredentials(daemon.configStore.HTTPProxy),
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HTTPSProxy: config.MaskCredentials(daemon.configStore.HTTPSProxy),
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NoProxy: config.MaskCredentials(daemon.configStore.NoProxy),
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},
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})
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logrus.Infof("Reloaded configuration: %s", jsonString)
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}
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daemon.configStore.Unlock()
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if err == nil {
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daemon.LogDaemonEventWithAttributes("reload", attributes)
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}
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}()
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if err := daemon.reloadPlatform(conf, attributes); err != nil {
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return err
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}
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daemon.reloadDebug(conf, attributes)
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daemon.reloadMaxConcurrentDownloadsAndUploads(conf, attributes)
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daemon.reloadMaxDownloadAttempts(conf, attributes)
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daemon.reloadShutdownTimeout(conf, attributes)
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daemon.reloadFeatures(conf, attributes)
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if err := daemon.reloadLabels(conf, attributes); err != nil {
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return err
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}
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if err := daemon.reloadAllowNondistributableArtifacts(conf, attributes); err != nil {
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return err
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}
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if err := daemon.reloadRegistryMirrors(conf, attributes); err != nil {
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return err
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}
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if err := daemon.reloadInsecureRegistries(conf, attributes); err != nil {
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return err
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}
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if err := daemon.reloadLiveRestore(conf, attributes); err != nil {
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return err
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}
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return daemon.reloadNetworkDiagnosticPort(conf, attributes)
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}
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// reloadDebug updates configuration with Debug option
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// and updates the passed attributes
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func (daemon *Daemon) reloadDebug(conf *config.Config, attributes map[string]string) {
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// update corresponding configuration
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if conf.IsValueSet("debug") {
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daemon.configStore.Debug = conf.Debug
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}
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// prepare reload event attributes with updatable configurations
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attributes["debug"] = strconv.FormatBool(daemon.configStore.Debug)
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}
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// reloadMaxConcurrentDownloadsAndUploads updates configuration with max concurrent
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// download and upload options and updates the passed attributes
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func (daemon *Daemon) reloadMaxConcurrentDownloadsAndUploads(conf *config.Config, attributes map[string]string) {
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// We always "reset" as the cost is lightweight and easy to maintain.
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daemon.configStore.MaxConcurrentDownloads = config.DefaultMaxConcurrentDownloads
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daemon.configStore.MaxConcurrentUploads = config.DefaultMaxConcurrentUploads
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if conf.IsValueSet("max-concurrent-downloads") && conf.MaxConcurrentDownloads != 0 {
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daemon.configStore.MaxConcurrentDownloads = conf.MaxConcurrentDownloads
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}
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if conf.IsValueSet("max-concurrent-uploads") && conf.MaxConcurrentUploads != 0 {
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daemon.configStore.MaxConcurrentUploads = conf.MaxConcurrentUploads
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}
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if daemon.imageService != nil {
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daemon.imageService.UpdateConfig(
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daemon.configStore.MaxConcurrentDownloads,
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daemon.configStore.MaxConcurrentUploads,
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)
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}
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// prepare reload event attributes with updatable configurations
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attributes["max-concurrent-downloads"] = strconv.Itoa(daemon.configStore.MaxConcurrentDownloads)
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attributes["max-concurrent-uploads"] = strconv.Itoa(daemon.configStore.MaxConcurrentUploads)
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logrus.Debug("Reset Max Concurrent Downloads: ", attributes["max-concurrent-downloads"])
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logrus.Debug("Reset Max Concurrent Uploads: ", attributes["max-concurrent-uploads"])
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}
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// reloadMaxDownloadAttempts updates configuration with max concurrent
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// download attempts when a connection is lost and updates the passed attributes
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func (daemon *Daemon) reloadMaxDownloadAttempts(conf *config.Config, attributes map[string]string) {
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// We always "reset" as the cost is lightweight and easy to maintain.
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daemon.configStore.MaxDownloadAttempts = config.DefaultDownloadAttempts
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if conf.IsValueSet("max-download-attempts") && conf.MaxDownloadAttempts != 0 {
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daemon.configStore.MaxDownloadAttempts = conf.MaxDownloadAttempts
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}
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// prepare reload event attributes with updatable configurations
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attributes["max-download-attempts"] = strconv.Itoa(daemon.configStore.MaxDownloadAttempts)
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logrus.Debug("Reset Max Download Attempts: ", attributes["max-download-attempts"])
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}
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// reloadShutdownTimeout updates configuration with daemon shutdown timeout option
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// and updates the passed attributes
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func (daemon *Daemon) reloadShutdownTimeout(conf *config.Config, attributes map[string]string) {
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// update corresponding configuration
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if conf.IsValueSet("shutdown-timeout") {
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daemon.configStore.ShutdownTimeout = conf.ShutdownTimeout
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logrus.Debugf("Reset Shutdown Timeout: %d", daemon.configStore.ShutdownTimeout)
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}
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// prepare reload event attributes with updatable configurations
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attributes["shutdown-timeout"] = strconv.Itoa(daemon.configStore.ShutdownTimeout)
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}
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// reloadLabels updates configuration with engine labels
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// and updates the passed attributes
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func (daemon *Daemon) reloadLabels(conf *config.Config, attributes map[string]string) error {
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// update corresponding configuration
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if conf.IsValueSet("labels") {
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daemon.configStore.Labels = conf.Labels
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}
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// prepare reload event attributes with updatable configurations
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if daemon.configStore.Labels != nil {
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labels, err := json.Marshal(daemon.configStore.Labels)
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if err != nil {
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return err
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}
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attributes["labels"] = string(labels)
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} else {
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attributes["labels"] = "[]"
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}
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return nil
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}
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// reloadAllowNondistributableArtifacts updates the configuration with allow-nondistributable-artifacts options
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// and updates the passed attributes.
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func (daemon *Daemon) reloadAllowNondistributableArtifacts(conf *config.Config, attributes map[string]string) error {
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// Update corresponding configuration.
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if conf.IsValueSet("allow-nondistributable-artifacts") {
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daemon.configStore.AllowNondistributableArtifacts = conf.AllowNondistributableArtifacts
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if err := daemon.registryService.LoadAllowNondistributableArtifacts(conf.AllowNondistributableArtifacts); err != nil {
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return err
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}
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}
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// Prepare reload event attributes with updatable configurations.
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if daemon.configStore.AllowNondistributableArtifacts != nil {
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v, err := json.Marshal(daemon.configStore.AllowNondistributableArtifacts)
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if err != nil {
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return err
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}
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attributes["allow-nondistributable-artifacts"] = string(v)
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} else {
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attributes["allow-nondistributable-artifacts"] = "[]"
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}
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return nil
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}
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// reloadInsecureRegistries updates configuration with insecure registry option
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// and updates the passed attributes
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func (daemon *Daemon) reloadInsecureRegistries(conf *config.Config, attributes map[string]string) error {
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// update corresponding configuration
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if conf.IsValueSet("insecure-registries") {
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daemon.configStore.InsecureRegistries = conf.InsecureRegistries
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if err := daemon.registryService.LoadInsecureRegistries(conf.InsecureRegistries); err != nil {
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return err
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}
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}
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// prepare reload event attributes with updatable configurations
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if daemon.configStore.InsecureRegistries != nil {
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insecureRegistries, err := json.Marshal(daemon.configStore.InsecureRegistries)
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if err != nil {
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return err
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}
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attributes["insecure-registries"] = string(insecureRegistries)
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} else {
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attributes["insecure-registries"] = "[]"
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}
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return nil
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}
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// reloadRegistryMirrors updates configuration with registry mirror options
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// and updates the passed attributes
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func (daemon *Daemon) reloadRegistryMirrors(conf *config.Config, attributes map[string]string) error {
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// update corresponding configuration
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if conf.IsValueSet("registry-mirrors") {
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daemon.configStore.Mirrors = conf.Mirrors
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if err := daemon.registryService.LoadMirrors(conf.Mirrors); err != nil {
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return err
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}
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}
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// prepare reload event attributes with updatable configurations
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if daemon.configStore.Mirrors != nil {
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mirrors, err := json.Marshal(daemon.configStore.Mirrors)
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if err != nil {
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return err
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}
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attributes["registry-mirrors"] = string(mirrors)
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} else {
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attributes["registry-mirrors"] = "[]"
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}
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return nil
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}
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// reloadLiveRestore updates configuration with live restore option
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// and updates the passed attributes
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func (daemon *Daemon) reloadLiveRestore(conf *config.Config, attributes map[string]string) error {
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// update corresponding configuration
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if conf.IsValueSet("live-restore") {
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daemon.configStore.LiveRestoreEnabled = conf.LiveRestoreEnabled
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}
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// prepare reload event attributes with updatable configurations
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attributes["live-restore"] = strconv.FormatBool(daemon.configStore.LiveRestoreEnabled)
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return nil
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}
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// reloadNetworkDiagnosticPort updates the network controller starting the diagnostic if the config is valid
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func (daemon *Daemon) reloadNetworkDiagnosticPort(conf *config.Config, attributes map[string]string) error {
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if conf == nil || daemon.netController == nil || !conf.IsValueSet("network-diagnostic-port") ||
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conf.NetworkDiagnosticPort < 1 || conf.NetworkDiagnosticPort > 65535 {
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// If there is no config make sure that the diagnostic is off
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if daemon.netController != nil {
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daemon.netController.StopDiagnostic()
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}
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return nil
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}
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// Enable the network diagnostic if the flag is set with a valid port within the range
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logrus.WithFields(logrus.Fields{"port": conf.NetworkDiagnosticPort, "ip": "127.0.0.1"}).Warn("Starting network diagnostic server")
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daemon.netController.StartDiagnostic(conf.NetworkDiagnosticPort)
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return nil
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}
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// reloadFeatures updates configuration with enabled/disabled features
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func (daemon *Daemon) reloadFeatures(conf *config.Config, attributes map[string]string) {
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// update corresponding configuration
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// note that we allow features option to be entirely unset
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daemon.configStore.Features = conf.Features
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// prepare reload event attributes with updatable configurations
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attributes["features"] = fmt.Sprintf("%v", daemon.configStore.Features)
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}
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