config

package
v1.20.4 Latest Latest
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 Go to latest Published: Jul 19, 2021 License: Apache-2.0 Imports: 37 Imported by: 1

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Index

Constants

View Source 
const (
	DefaultRuntimeType = "oci"
	DefaultRuntimeRoot = "/run/runc"

	OCIBufSize    = 8192
	RuntimeTypeVM = "vm"
)

Defaults if none are specified

View Source 
const (
	// DefaultPidsLimit is the default value for maximum number of processes
	// allowed inside a container
	DefaultPidsLimit = 1024

	// DefaultLogSizeMax is the default value for the maximum log size
	// allowed for a container. Negative values mean that no limit is imposed.
	DefaultLogSizeMax = -1

	// DefaultLogToJournald is the default value for whether conmon should
	// log to journald in addition to kubernetes log file.
	DefaultLogToJournald = false
)
View Source 
const (
	ContainerAttachSocketDir = "/var/run/crio"

	// CrioConfigPath is the default location for the conf file
	CrioConfigPath = "/etc/crio/crio.conf"

	// CrioConfigDropInPath is the default location for the drop-in config files
	CrioConfigDropInPath = "/etc/crio/crio.conf.d"

	// CrioSocketPath is where the unix socket is located
	CrioSocketPath = "/var/run/crio/crio.sock"

	// CrioVersionPathTmp is where the CRI-O version file is located on a tmpfs disk
	// used to check if we should wipe containers
	CrioVersionPathTmp = "/var/run/crio/version"

	// CrioVersionPathPersist is where the CRI-O version file is located
	// used to check whether we've upgraded, and thus need to remove images
	CrioVersionPathPersist = "/var/lib/crio/version"
)

Defaults for linux/unix if none are specified

View Source 
const (
	// IpcNamespace is the Linux IPC namespace
	IpcNamespace = Namespace("ipc")

	// NetNamespace is the network namespace
	NetNamespace = Namespace("net")

	// UnknownNamespace is the zero value if no namespace is known
	UnknownNamespace = Namespace("")
)
View Source 
const (
	// DefaultIrqBalanceConfigFile default irqbalance service configuration file path
	DefaultIrqBalanceConfigFile = "/etc/sysconfig/irqbalance"
)

Variables

This section is empty.

Functions

func RemoveUnusedSocket added in v1.19.0 

func RemoveUnusedSocket(path string) error

RemoveUnusedSocket first ensures that the path to the socket exists and removes unused socket connections if available.

Types

type APIConfig 

type APIConfig struct {
	// GRPCMaxSendMsgSize is the maximum grpc send message size in bytes.
	GRPCMaxSendMsgSize int `toml:"grpc_max_send_msg_size"`

	// GRPCMaxRecvMsgSize is the maximum grpc receive message size in bytes.
	GRPCMaxRecvMsgSize int `toml:"grpc_max_recv_msg_size"`

	// Listen is the path to the AF_LOCAL socket on which cri-o will listen.
	// This may support proto://addr formats later, but currently this is just
	// a path.
	Listen string `toml:"listen"`

	// StreamAddress is the IP address on which the stream server will listen.
	StreamAddress string `toml:"stream_address"`

	// StreamPort is the port on which the stream server will listen.
	StreamPort string `toml:"stream_port"`

	// StreamEnableTLS enables encrypted tls transport of the stream server
	StreamEnableTLS bool `toml:"stream_enable_tls"`

	// StreamTLSCert is the x509 certificate file path used to serve the encrypted stream
	StreamTLSCert string `toml:"stream_tls_cert"`

	// StreamTLSKey is the key file path used to serve the encrypted stream
	StreamTLSKey string `toml:"stream_tls_key"`

	// StreamTLSCA is the x509 CA(s) file used to verify and authenticate client
	// communication with the tls encrypted stream
	StreamTLSCA string `toml:"stream_tls_ca"`

	// StreamIdleTimeout is how long to leave idle connections open for
	StreamIdleTimeout string `toml:"stream_idle_timeout"`
}

APIConfig represents the "crio.api" TOML config table.

func (*APIConfig) Validate added in v1.16.0 

func (c *APIConfig) Validate(onExecution bool) error

Validate is the main entry point for API configuration validation. The parameter `onExecution` specifies if the validation should include execution checks. It returns an `error` on validation failure, otherwise `nil`.

type Config added in v1.16.0 

type Config struct {
	RootConfig
	APIConfig
	RuntimeConfig
	ImageConfig
	NetworkConfig
	MetricsConfig
	SystemContext *types.SystemContext
	// contains filtered or unexported fields
}

Config represents the entire set of configuration values that can be set for the server. This is intended to be loaded from a toml-encoded config file.

func DefaultConfig added in v1.16.0 

func DefaultConfig() (*Config, error)

DefaultConfig returns the default configuration for crio.

func (*Config) GetData added in v1.16.0 

func (c *Config) GetData() *Config

GetData returns the Config of a Iface

func (*Config) Reload added in v1.16.0 

func (c *Config) Reload() error

Reload reloads the configuration for the single crio.conf and the drop-in configuration directory.

func (*Config) ReloadAppArmorProfile added in v1.18.0 

func (c *Config) ReloadAppArmorProfile(newConfig *Config) error

ReloadAppArmorProfile reloads the AppArmor profile from the new config if they differ.

func (*Config) ReloadDecryptionKeyConfig added in v1.18.0 

func (c *Config) ReloadDecryptionKeyConfig(newConfig *Config)

ReloadDecryptionKeyConfig updates the DecryptionKeysPath with the provided `newConfig`.

func (*Config) ReloadLogFilter added in v1.17.0 

func (c *Config) ReloadLogFilter(newConfig *Config) error

ReloadLogFilter updates the LogFilter with the provided `newConfig`. It errors if the filter is not applicable.

func (*Config) ReloadLogLevel added in v1.16.0 

func (c *Config) ReloadLogLevel(newConfig *Config) error

ReloadLogLevel updates the LogLevel with the provided `newConfig`. It errors if the level is not parsable.

func (*Config) ReloadPauseImage added in v1.16.0 

func (c *Config) ReloadPauseImage(newConfig *Config) error

func (*Config) ReloadRegistries added in v1.18.0 

func (c *Config) ReloadRegistries() error

ReloadRegistries reloads the registry configuration from the Configs `SystemContext`. The method errors in case of any update failure.

func (*Config) ReloadSeccompProfile added in v1.18.0 

func (c *Config) ReloadSeccompProfile(newConfig *Config) error

ReloadSeccompProfile reloads the seccomp profile from the new config if their paths differ.

func (*Config) SetLocations added in v1.18.0 

func (c *Config) SetLocations(singleConfigPath, dropInConfigDir string)

func (*Config) StartWatcher added in v1.18.0 

func (c *Config) StartWatcher()

StartWatcher starts a new SIGHUP go routine for the current config.

func (*Config) ToBytes added in v1.16.0 

func (c *Config) ToBytes() ([]byte, error)

ToBytes encodes the config into a byte slice. It errors if the encoding fails, which should never happen at all because of general type safeness.

func (*Config) ToFile added in v1.16.0 

func (c *Config) ToFile(path string) error

ToFile outputs the given Config as a TOML-encoded file at the given path. Returns errors encountered when generating or writing the file, or nil otherwise.

func (*Config) UpdateFromFile added in v1.16.0 

func (c *Config) UpdateFromFile(path string) error

UpdateFromFile populates the Config from the TOML-encoded file at the given path. Returns errors encountered when reading or parsing the files, or nil otherwise.

func (*Config) UpdateFromPath added in v1.17.0 

func (c *Config) UpdateFromPath(path string) error

UpdateFromPath recursively iterates the provided path and updates the configuration for it

func (*Config) Validate added in v1.16.0 

func (c *Config) Validate(onExecution bool) error

Validate is the main entry point for library configuration validation. The parameter `onExecution` specifies if the validation should include execution checks. It returns an `error` on validation failure, otherwise `nil`.

func (*Config) WriteTemplate added in v1.16.0 

func (c *Config) WriteTemplate(w io.Writer) error

WriteTemplate write the configuration template to the provided writer

type Iface added in v1.16.0 

type Iface interface {
	GetStore() (storage.Store, error)
	GetData() *Config
}

Iface provides a config interface for data encapsulation

type ImageConfig 

type ImageConfig struct {
	// DefaultTransport is a value we prefix to image names that fail to
	// validate source references.
	DefaultTransport string `toml:"default_transport"`
	// GlobalAuthFile is a path to a file like /var/lib/kubelet/config.json
	// containing credentials necessary for pulling images from secure
	// registries.
	GlobalAuthFile string `toml:"global_auth_file"`
	// PauseImage is the name of an image which we use to instantiate infra
	// containers.
	PauseImage string `toml:"pause_image"`
	// PauseImageAuthFile, if not empty, is a path to a file like
	// /var/lib/kubelet/config.json containing credentials necessary
	// for pulling PauseImage
	PauseImageAuthFile string `toml:"pause_image_auth_file"`
	// PauseCommand is the path of the binary we run in an infra
	// container that's been instantiated using PauseImage.
	PauseCommand string `toml:"pause_command"`
	// SignaturePolicyPath is the name of the file which decides what sort
	// of policy we use when deciding whether or not to trust an image that
	// we've pulled.  Outside of testing situations, it is strongly advised
	// that this be left unspecified so that the default system-wide policy
	// will be used.
	SignaturePolicyPath string `toml:"signature_policy"`
	// InsecureRegistries is a list of registries that must be contacted w/o
	// TLS verification.
	InsecureRegistries []string `toml:"insecure_registries"`
	// ImageVolumes controls how volumes specified in image config are handled
	ImageVolumes ImageVolumesType `toml:"image_volumes"`
	// Registries holds a list of registries used to pull unqualified images
	Registries []string `toml:"registries"`
	// Temporary directory for big files
	BigFilesTemporaryDir string `toml:"big_files_temporary_dir"`
}

ImageConfig represents the "crio.image" TOML config table.

type ImageVolumesType 

type ImageVolumesType string

ImageVolumesType describes image volume handling strategies 

const (
	// ImageVolumesMkdir option is for using mkdir to handle image volumes
	ImageVolumesMkdir ImageVolumesType = "mkdir"
	// ImageVolumesIgnore option is for ignoring image volumes altogether
	ImageVolumesIgnore ImageVolumesType = "ignore"
	// ImageVolumesBind option is for using bind mounted volumes
	ImageVolumesBind ImageVolumesType = "bind"
)

type MetricsConfig added in v1.16.0 

type MetricsConfig struct {
	// EnableMetrics can be used to globally enable or disable metrics support
	EnableMetrics bool `toml:"enable_metrics"`

	// MetricsPort is the port on which the metrics server will listen.
	MetricsPort int `toml:"metrics_port"`

	// Local socket path to bind the metrics server to
	MetricsSocket string `toml:"metrics_socket"`
}

MetricsConfig specifies all necessary configuration for Prometheus based metrics retrieval

type Namespace added in v1.18.0 

type Namespace string

Namespace represents a kernel namespace name.

type NetworkConfig 

type NetworkConfig struct {
	// CNIDefaultNetwork is the default CNI network name to be selected
	CNIDefaultNetwork string `toml:"cni_default_network"`

	// NetworkDir is where CNI network configuration files are stored.
	NetworkDir string `toml:"network_dir"`

	// PluginDir is where CNI plugin binaries are stored.
	PluginDir string `toml:"plugin_dir,omitempty"`

	// PluginDirs is where CNI plugin binaries are stored.
	PluginDirs []string `toml:"plugin_dirs"`
	// contains filtered or unexported fields
}

NetworkConfig represents the "crio.network" TOML config table

func (*NetworkConfig) CNIPlugin added in v1.18.0 

func (c *NetworkConfig) CNIPlugin() ocicni.CNIPlugin

CNIPlugin returns the network configuration CNI plugin

func (*NetworkConfig) Validate added in v1.16.0 

func (c *NetworkConfig) Validate(onExecution bool) error

Validate is the main entry point for network configuration validation. The parameter `onExecution` specifies if the validation should include execution checks. It returns an `error` on validation failure, otherwise `nil`.

type RootConfig 

type RootConfig struct {
	// Root is a path to the "root directory" where data not
	// explicitly handled by other options will be stored.
	Root string `toml:"root"`

	// RunRoot is a path to the "run directory" where state information not
	// explicitly handled by other options will be stored.
	RunRoot string `toml:"runroot"`

	// Storage is the name of the storage driver which handles actually
	// storing the contents of containers.
	Storage string `toml:"storage_driver"`

	// StorageOption is a list of storage driver specific options.
	StorageOptions []string `toml:"storage_option"`

	// LogDir is the default log directory where all logs will go unless kubelet
	// tells us to put them somewhere else.
	LogDir string `toml:"log_dir"`

	// VersionFile is the location CRI-O will lay down the version file
	// that checks whether we've rebooted
	VersionFile string `toml:"version_file"`

	// VersionFilePersist is the location CRI-O will lay down the version file
	// that checks whether we've upgraded
	VersionFilePersist string `toml:"version_file_persist"`

	// InternalWipe is whether CRI-O should wipe containers and images after a reboot when the server starts.
	// If set to false, one must use the external command `crio wipe` to wipe the containers and images in these situations.
	InternalWipe bool `toml:"internal_wipe"`
}

RootConfig represents the root of the "crio" TOML config table.

func (*RootConfig) GetStore added in v1.18.4 

func (c *RootConfig) GetStore() (storage.Store, error)

GetStore returns the container storage for a given configuration

func (*RootConfig) Validate added in v1.16.0 

func (c *RootConfig) Validate(onExecution bool) error

Validate is the main entry point for root configuration validation. The parameter `onExecution` specifies if the validation should include execution checks. It returns an `error` on validation failure, otherwise `nil`.

type RuntimeConfig 

type RuntimeConfig struct {
	// SeccompUseDefaultWhenEmpty specifies whether the default profile
	// should be used when an empty one is specified.
	SeccompUseDefaultWhenEmpty bool `toml:"seccomp_use_default_when_empty"`

	// NoPivot instructs the runtime to not use `pivot_root`, but instead use `MS_MOVE`
	NoPivot bool `toml:"no_pivot"`

	// SELinux determines whether or not SELinux is used for pod separation.
	SELinux bool `toml:"selinux"`

	// Whether container output should be logged to journald in addition
	// to the kubernetes log file
	LogToJournald bool `toml:"log_to_journald"`

	// ManageNSLifecycle determines whether we pin and remove namespaces
	// and manage their lifecycle
	// This option is being deprecated
	ManageNSLifecycle bool `toml:"manage_ns_lifecycle"`

	// DropInfraCtr determines whether the infra container is dropped when appropriate.
	// Requires ManageNSLifecycle to be true.
	DropInfraCtr bool `toml:"drop_infra_ctr"`

	// ReadOnly run all pods/containers in read-only mode.
	// This mode will mount tmpfs on /run, /tmp and /var/tmp, if those are not mountpoints
	// Will also set the readonly flag in the OCI Runtime Spec.  In this mode containers
	// will only be able to write to volumes mounted into them
	ReadOnly bool `toml:"read_only"`

	// ConmonEnv is the environment variable list for conmon process.
	ConmonEnv []string `toml:"conmon_env"`

	// HooksDir holds paths to the directories containing hooks
	// configuration files.  When the same filename is present in in
	// multiple directories, the file in the directory listed last in
	// this slice takes precedence.
	HooksDir []string `toml:"hooks_dir"`

	// Capabilities to add to all containers.
	DefaultCapabilities capabilities.Capabilities `toml:"default_capabilities"`

	// Additional environment variables to set for all the
	// containers. These are overridden if set in the
	// container image spec or in the container runtime configuration.
	DefaultEnv []string `toml:"default_env"`

	// Sysctls to add to all containers.
	DefaultSysctls []string `toml:"default_sysctls"`

	// DefaultUlimits specifies the default ulimits to apply to containers
	DefaultUlimits []string `toml:"default_ulimits"`

	// Devices to add to containers
	AdditionalDevices []string `toml:"additional_devices"`

	// DefaultRuntime is the _name_ of the OCI runtime to be used as the default.
	// The name is matched against the Runtimes map below.
	DefaultRuntime string `toml:"default_runtime"`

	// DecryptionKeysPath is the path where keys for image decryption are stored.
	DecryptionKeysPath string `toml:"decryption_keys_path"`

	// Conmon is the path to conmon binary, used for managing the runtime.
	Conmon string `toml:"conmon"`

	// ConmonCgroup is the cgroup setting used for conmon.
	ConmonCgroup string `toml:"conmon_cgroup"`

	// SeccompProfile is the seccomp.json profile path which is used as the
	// default for the runtime.
	SeccompProfile string `toml:"seccomp_profile"`

	// ApparmorProfile is the apparmor profile name which is used as the
	// default for the runtime.
	ApparmorProfile string `toml:"apparmor_profile"`

	// IrqBalanceConfigFile is the irqbalance service config file which is used
	// for configuring irqbalance daemon.
	IrqBalanceConfigFile string `toml:"irqbalance_config_file"`

	// CgroupManagerName is the manager implementation name which is used to
	// handle cgroups for containers.
	CgroupManagerName string `toml:"cgroup_manager"`

	// DefaultMountsFile is the file path for the default mounts to be mounted for the container
	// Note, for testing purposes mainly
	DefaultMountsFile string `toml:"default_mounts_file"`

	// ContainerExitsDir is the directory in which container exit files are
	// written to by conmon.
	ContainerExitsDir string `toml:"container_exits_dir"`

	// ContainerAttachSocketDir is the location for container attach sockets.
	ContainerAttachSocketDir string `toml:"container_attach_socket_dir"`

	// BindMountPrefix is the prefix to use for the source of the bind mounts.
	BindMountPrefix string `toml:"bind_mount_prefix"`

	// UIDMappings specifies the UID mappings to have in the user namespace.
	// A range is specified in the form containerUID:HostUID:Size.  Multiple
	// ranges are separated by comma.
	UIDMappings string `toml:"uid_mappings"`

	// GIDMappings specifies the GID mappings to have in the user namespace.
	// A range is specified in the form containerUID:HostUID:Size.  Multiple
	// ranges are separated by comma.
	GIDMappings string `toml:"gid_mappings"`

	// LogLevel determines the verbosity of the logs based on the level it is set to.
	// Options are fatal, panic, error (default), warn, info, and debug.
	LogLevel string `toml:"log_level"`

	// LogFilter specifies a regular expression to filter the log messages
	LogFilter string `toml:"log_filter"`

	// NamespacesDir is the directory where the state of the managed namespaces
	// gets tracked
	NamespacesDir string `toml:"namespaces_dir"`

	// PinNSPath is the path to find the pinns binary, which is needed
	// to manage namespace lifecycle
	PinnsPath string `toml:"pinns_path"`

	// Runtimes defines a list of OCI compatible runtimes. The runtime to
	// use is picked based on the runtime_handler provided by the CRI. If
	// no runtime_handler is provided, the runtime will be picked based on
	// the level of trust of the workload.
	Runtimes Runtimes `toml:"runtimes"`

	// PidsLimit is the number of processes each container is restricted to
	// by the cgroup process number controller.
	PidsLimit int64 `toml:"pids_limit"`

	// LogSizeMax is the maximum number of bytes after which the log file
	// will be truncated. It can be expressed as a human-friendly string
	// that is parsed to bytes.
	// Negative values indicate that the log file won't be truncated.
	LogSizeMax int64 `toml:"log_size_max"`

	// CtrStopTimeout specifies the time to wait before to generate an
	// error because the container state is still tagged as "running".
	CtrStopTimeout int64 `toml:"ctr_stop_timeout"`

	// SeparatePullCgroup specifies whether an image pull must be performed in a separate cgroup
	SeparatePullCgroup string `toml:"separate_pull_cgroup"`

	// InfraCtrCPUSet is the CPUs set that will be used to run infra containers
	InfraCtrCPUSet string `toml:"infra_ctr_cpuset"`
	// contains filtered or unexported fields
}

RuntimeConfig represents the "crio.runtime" TOML config table.

func (*RuntimeConfig) AppArmor added in v1.18.0 

func (c *RuntimeConfig) AppArmor() *apparmor.Config

AppArmor returns the AppArmor configuration

func (*RuntimeConfig) CgroupManager 

func (c *RuntimeConfig) CgroupManager() cgmgr.CgroupManager

CgroupManager returns the CgroupManager configuration

func (*RuntimeConfig) ConmonSupportsSync added in v1.18.3 

func (c *RuntimeConfig) ConmonSupportsSync() bool

func (*RuntimeConfig) Devices added in v1.20.0 

func (c *RuntimeConfig) Devices() []device.Device

func (*RuntimeConfig) Seccomp added in v1.18.0 

func (c *RuntimeConfig) Seccomp() *seccomp.Config

Seccomp returns the seccomp configuration

func (*RuntimeConfig) Sysctls added in v1.18.0 

func (c *RuntimeConfig) Sysctls() ([]Sysctl, error)

Sysctls returns the parsed sysctl slice and an error if not parsable

func (*RuntimeConfig) Ulimits added in v1.19.0 

func (c *RuntimeConfig) Ulimits() []ulimits.Ulimit

Ulimits returns the Ulimits configuration

func (*RuntimeConfig) Validate added in v1.16.0 

func (c *RuntimeConfig) Validate(systemContext *types.SystemContext, onExecution bool) error

Validate is the main entry point for runtime configuration validation The parameter `onExecution` specifies if the validation should include execution checks. It returns an `error` on validation failure, otherwise `nil`.

func (*RuntimeConfig) ValidateConmonPath added in v1.16.0 

func (c *RuntimeConfig) ValidateConmonPath(executable string) error

ValidateConmonPath checks if `Conmon` is set within the `RuntimeConfig`. If this is not the case, it tries to find it within the $PATH variable. In any other case, it simply checks if `Conmon` is a valid file.

func (*RuntimeConfig) ValidatePinnsPath added in v1.17.0 

func (c *RuntimeConfig) ValidatePinnsPath(executable string) error

func (*RuntimeConfig) ValidateRuntimes added in v1.16.0 

func (c *RuntimeConfig) ValidateRuntimes() error

ValidateRuntimes checks every runtime if its members are valid

type RuntimeHandler added in v1.16.0 

type RuntimeHandler struct {
	RuntimePath string `toml:"runtime_path"`
	RuntimeType string `toml:"runtime_type"`
	RuntimeRoot string `toml:"runtime_root"`
	// PrivilegedWithoutHostDevices can be used to restrict passing host devices
	// to a container running as privileged.
	PrivilegedWithoutHostDevices bool `toml:"privileged_without_host_devices,omitempty"`
	// AllowedAnnotations is a slice of experimental annotations that this runtime handler is allowed to process.
	// The currently recognized values are:
	// "io.kubernetes.cri-o.userns-mode" for configuring a user namespace for the pod.
	// "io.kubernetes.cri-o.Devices" for configuring devices for the pod.
	// "io.kubernetes.cri-o.ShmSize" for configuring the size of /dev/shm.
	AllowedAnnotations []string `toml:"allowed_annotations,omitempty"`
}

RuntimeHandler represents each item of the "crio.runtime.runtimes" TOML config table.

func (*RuntimeHandler) Validate added in v1.16.0 

func (r *RuntimeHandler) Validate(name string) error

Validate checks if the whole runtime is valid.

func (*RuntimeHandler) ValidateRuntimePath added in v1.16.0 

func (r *RuntimeHandler) ValidateRuntimePath(name string) error

ValidateRuntimePath checks if the `RuntimePath` is either set or available within the $PATH environment. The method fails on any `RuntimePath` lookup error.

func (*RuntimeHandler) ValidateRuntimeType added in v1.16.0 

func (r *RuntimeHandler) ValidateRuntimeType(name string) error

ValidateRuntimeType checks if the `RuntimeType` is valid.

type Runtimes added in v1.16.0 

type Runtimes map[string]*RuntimeHandler

Multiple runtime Handlers in a map

type Sysctl added in v1.18.0 

type Sysctl struct {
	// contains filtered or unexported fields
}

Sysctl is a generic abstraction over key value based sysctls

func (*Sysctl) Key added in v1.18.0 

func (s *Sysctl) Key() string

Key returns the key of the sysctl (key=value format)

func (*Sysctl) Validate added in v1.18.0 

func (s *Sysctl) Validate(hostNet, hostIPC bool) error

Validate checks that a sysctl is whitelisted because it is known to be namespaced by the Linux kernel. The parameters hostNet and hostIPC are used to forbid sysctls for pod sharing the respective namespaces with the host. This check is only used on sysctls defined by the user in the crio.conf file.

func (*Sysctl) Value added in v1.18.0 

func (s *Sysctl) Value() string

Value returns the value of the sysctl (key=value format)

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