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daemon: complete the "--graph" / "-g" deprecation

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The `-g` / `--graph` options were soft deprecated in favor of `--data-root` in
261ef1fa27 (v17.05.0) and at the time considered
to not be removed. However, with the move towards containerd snapshotters, having
these options around adds additional complexity to handle fallbacks for deprecated
(and hidden) flags, so completing the deprecation.

With this patch:

    dockerd --graph=/var/lib/docker --validate
    Flag --graph has been deprecated, Use --data-root instead
    unable to configure the Docker daemon with file /etc/docker/daemon.json: merged configuration validation from file and command line flags failed: the "graph" config file option is deprecated; use "data-root" instead

    mkdir -p /etc/docker
    echo '{"graph":"/var/lib/docker"}' > /etc/docker/daemon.json

    dockerd --validate
    unable to configure the Docker daemon with file /etc/docker/daemon.json: merged configuration validation from file and command line flags failed: the "graph" config file option is deprecated; use "data-root" instead

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2022-08-18 12:51:23 +02:00
parent 6f8ea5b26e
commit b58de39ca7
No known key found for this signature in database
GPG key ID: 76698F39D527CE8C
3 changed files with 9 additions and 22 deletions
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7
cmd/dockerd/config.go
View file

@ -65,10 +65,9 @@ func installCommonConfigFlags(conf *config.Config, flags *pflag.FlagSet) error {
// Deprecated flags / options
// "--graph" is "soft-deprecated" in favor of "data-root". This flag was added
// before Docker 1.0, so won't be removed, only hidden, to discourage its usage.
flags.StringVarP(&conf.Root, "graph", "g", conf.Root, "Root of the Docker runtime")
_ = flags.MarkHidden("graph")
//nolint:staticcheck // TODO(thaJeztah): remove in next release.
flags.StringVarP(&conf.RootDeprecated, "graph", "g", conf.RootDeprecated, "Root of the Docker runtime")
_ = flags.MarkDeprecated("graph", "Use --data-root instead")
flags.BoolVarP(&conf.AutoRestart, "restart", "r", true, "--restart on the daemon has been deprecated in favor of --restart policies on docker run")
_ = flags.MarkDeprecated("restart", "Please use a restart policy on docker run")

7
cmd/dockerd/daemon.go
View file

@ -397,9 +397,6 @@ func loadDaemonCliConfig(opts *daemonOptions) (*config.Config, error) {
conf.Hosts = opts.Hosts
conf.LogLevel = opts.LogLevel
if flags.Changed("graph") && flags.Changed("data-root") {
return nil, errors.New(`cannot specify both "--graph" and "--data-root" option`)
}
if flags.Changed(FlagTLS) {
conf.TLS = &opts.TLS
}
@ -450,10 +447,6 @@ func loadDaemonCliConfig(opts *daemonOptions) (*config.Config, error) {
return nil, err
}
if flags.Changed("graph") {
logrus.Warnf(`The "-g / --graph" flag is deprecated. Please use "--data-root" instead`)
}
// Check if duplicate label-keys with different values are found
newLabels, err := config.GetConflictFreeLabels(conf.Labels)
if err != nil {

17
daemon/config/config.go
View file

@ -157,7 +157,7 @@ type CommonConfig struct {
NetworkDiagnosticPort int `json:"network-diagnostic-port,omitempty"`
Pidfile string `json:"pidfile,omitempty"`
RawLogs bool `json:"raw-logs,omitempty"`
RootDeprecated string `json:"graph,omitempty"`
RootDeprecated string `json:"graph,omitempty"` // Deprecated: use Root instead. TODO(thaJeztah): remove in next release.
Root string `json:"data-root,omitempty"`
ExecRoot string `json:"exec-root,omitempty"`
SocketGroup string `json:"group,omitempty"`
@ -472,16 +472,6 @@ func getConflictFreeConfiguration(configFile string, flags *pflag.FlagSet) (*Con
return nil, err
}
if config.RootDeprecated != "" {
logrus.Warn(`The "graph" config file option is deprecated. Please use "data-root" instead.`)
if config.Root != "" {
return nil, errors.New(`cannot specify both "graph" and "data-root" config file options`)
}
config.Root = config.RootDeprecated
}
return &config, nil
}
@ -572,6 +562,11 @@ func findConfigurationConflicts(config map[string]interface{}, flags *pflag.Flag
// such as config.DNS, config.Labels, config.DNSSearch,
// as well as config.MaxConcurrentDownloads, config.MaxConcurrentUploads and config.MaxDownloadAttempts.
func Validate(config *Config) error {
//nolint:staticcheck // TODO(thaJeztah): remove in next release.
if config.RootDeprecated != "" {
return errors.New(`the "graph" config file option is deprecated; use "data-root" instead`)
}
// validate log-level
if config.LogLevel != "" {
if _, err := logrus.ParseLevel(config.LogLevel); err != nil {