fd29dbe4c8
This enables the grpc timing histograms via a config option as they are metrics of high cardinality. This is useful for perf testing and debugging but should not be the default on production systems unless needed. ```toml [metrics] grpc_histogram = true ``` Signed-off-by: Michael Crosby <crosbymichael@gmail.com>
96 lines
2.5 KiB
Go
96 lines
2.5 KiB
Go
package server
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import (
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"bytes"
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"io"
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"github.com/BurntSushi/toml"
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"github.com/containerd/containerd/errdefs"
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"github.com/pkg/errors"
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)
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// Config provides containerd configuration data for the server
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type Config struct {
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// Root is the path to a directory where containerd will store persistent data
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Root string `toml:"root"`
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// State is the path to a directory where containerd will store transient data
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State string `toml:"state"`
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// GRPC configuration settings
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GRPC GRPCConfig `toml:"grpc"`
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// Debug and profiling settings
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Debug Debug `toml:"debug"`
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// Metrics and monitoring settings
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Metrics MetricsConfig `toml:"metrics"`
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// Plugins provides plugin specific configuration for the initialization of a plugin
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Plugins map[string]toml.Primitive `toml:"plugins"`
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// NoSubreaper disables containerd as a subreaper
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NoSubreaper bool `toml:"no_subreaper"`
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// OOMScore adjust the containerd's oom score
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OOMScore int `toml:"oom_score"`
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// Cgroup specifies cgroup information for the containerd daemon process
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Cgroup CgroupConfig `toml:"cgroup"`
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md toml.MetaData
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}
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// GRPCConfig provides GRPC configuration for the socket
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type GRPCConfig struct {
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Address string `toml:"address"`
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UID int `toml:"uid"`
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GID int `toml:"gid"`
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}
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// Debug provides debug configuration
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type Debug struct {
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Address string `toml:"address"`
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UID int `toml:"uid"`
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GID int `toml:"gid"`
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Level string `toml:"level"`
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}
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// MetricsConfig provides metrics configuration
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type MetricsConfig struct {
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Address string `toml:"address"`
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GRPCHistogram bool `toml:"grpc_histogram"`
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}
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// CgroupConfig provides cgroup configuration
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type CgroupConfig struct {
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Path string `toml:"path"`
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}
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// Decode unmarshals a plugin specific configuration by plugin id
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func (c *Config) Decode(id string, v interface{}) (interface{}, error) {
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data, ok := c.Plugins[id]
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if !ok {
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return v, nil
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}
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if err := c.md.PrimitiveDecode(data, v); err != nil {
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return nil, err
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}
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return v, nil
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}
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// WriteTo marshals the config to the provided writer
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func (c *Config) WriteTo(w io.Writer) (int64, error) {
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buf := bytes.NewBuffer(nil)
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e := toml.NewEncoder(buf)
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if err := e.Encode(c); err != nil {
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return 0, err
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}
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return io.Copy(w, buf)
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}
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// LoadConfig loads the containerd server config from the provided path
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func LoadConfig(path string, v *Config) error {
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if v == nil {
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return errors.Wrapf(errdefs.ErrInvalidArgument, "argument v must not be nil")
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}
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md, err := toml.DecodeFile(path, v)
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if err != nil {
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return err
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}
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v.md = md
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return nil
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}
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