The Vitess Docs

vtctld

The Vitess Cluster Management Daemon

vtctld provides web and gRPC interfaces to manage a single Vitess cluster. It is usually the first Vitess component to be started after a valid global topology service has been created.

`grpc-vtctld` — New as of v14 #

For the last several releases, vtctld has been transitioning to a newer gRPC service for well-typed cluster management requests. To enable this newer service, include "grpc-vtctld" in the --service_map argument.

This is required to use programs such as vtadmin and vtctldclient. While the old API and service are deprecated and will be removed in a future release, they are still required for certain cluster management commands (e.g. OnlineDDL and Reshard) as well as the vtctld web UI, so most users will want to include both in their --service_map. This is demonstrated in the example usage below:

Example Usage #

The following example launches the vtctld daemon on port 15000:

export TOPOLOGY_FLAGS="--topo_implementation etcd2 --topo_global_server_address localhost:2379 --topo_global_root /vitess/global"
export VTDATAROOT="/tmp"

vtctld \
 $TOPOLOGY_FLAGS \
 --service_map 'grpc-vtctl,grpc-vtctld' \
 --backup_storage_implementation file \
 --file_backup_storage_root $VTDATAROOT/backups \
 --log_dir $VTDATAROOT/tmp \
 --port 15000 \
 --grpc_port 15999

Options #

Name	Type	Definition
--action_timeout	duration	time to wait for an action before resorting to force (default 2m0s)
--alsologtostderr		log to standard error as well as files
--azblob_backup_account_key_file	string	Path to a file containing the Azure Storage account key; if this flag is unset, the environment variable VT_AZBLOB_ACCOUNT_KEY will be used as the key itself (NOT a file path)
--azblob_backup_account_name	string	Azure Storage Account name for backups; if this flag is unset, the environment variable VT_AZBLOB_ACCOUNT_NAME will be used
--azblob_backup_container_name	string	Azure Blob Container Name
--azblob_backup_parallelism	int	Azure Blob operation parallelism (requires extra memory when increased) (default 1)
--azblob_backup_storage_root	string	Root prefix for all backup-related Azure Blobs; this should exclude both initial and trailing '/' (e.g. just 'a/b' not '/a/b/')
--backup_engine_implementation	string	Specifies which implementation to use for creating new backups (builtin or xtrabackup). Restores will always be done with whichever engine created a given backup. (default "builtin")
--backup_storage_block_size	int	if backup_storage_compress is true, backup_storage_block_size sets the byte size for each block while compressing (default is 250000). (default 250000)
--backup_storage_compress	boolean	if set, the backup files will be compressed (default is true).
--backup_storage_implementation	string	which implementation to use for the backup storage feature
--backup_storage_number_blocks	int	if backup_storage_compress is true, backup_storage_number_blocks sets the number of blocks that can be processed, at once, before the writer blocks, during compression (default is 2). It should be equal to the number of CPUs available for compression (default 2)
--builtinbackup-file-read-buffer-size	uint	read files using an IO buffer of this many bytes. Golang defaults are used when set to 0.
--builtinbackup-file-write-buffer-size	uint	write files using an IO buffer of this many bytes. Golang defaults are used when set to 0. (default 2097152)
--builtinbackup_mysqld_timeout	duration	how long to wait for mysqld to shutdown at the start of the backup. (default 10m0s)
--builtinbackup_progress	duration	how often to send progress updates when backing up large files. (default 5s)
--catch-sigpipe		catch and ignore SIGPIPE on stdout and stderr if specified
--cell	string	cell to use
--ceph_backup_storage_config	string	Path to JSON config file for ceph backup storage (default "ceph_backup_config.json")
--consul_auth_static_file	string	JSON File to read the topos/tokens from.
--datadog-agent-host	string	host to send spans to. if empty, no tracing will be done
--datadog-agent-port	string	port to send spans to. if empty, no tracing will be done
--disable_active_reparents	boolean	if set, do not allow active reparents. Use this to protect a cluster using external reparents.
--emit_stats	boolean	true iff we should emit stats to push-based monitoring/stats backends
--file_backup_storage_root	string	root directory for the file backup storage -- this path must be on shared storage to provide a global view of backups to all vitess components
--gcs_backup_storage_bucket	string	Google Cloud Storage bucket to use for backups
--gcs_backup_storage_root	string	root prefix for all backup-related object names
--grpc_auth_mode	string	Which auth plugin implementation to use (eg: static)
--grpc_auth_mtls_allowed_substrings	string	List of substrings of at least one of the client certificate names (separated by colon).
--grpc_auth_static_client_creds	string	when using grpc_static_auth in the server, this file provides the credentials to use to authenticate with server
--grpc_auth_static_password_file	string	JSON File to read the users/passwords from.
--grpc_ca	string	ca to use, requires TLS, and enforces client cert check
--grpc_cert	string	certificate to use, requires grpc_key, enables TLS
--grpc_compression	string	how to compress gRPC, default: nothing, supported: snappy
--grpc_crl	string	path to a certificate revocation list in PEM format, client certificates will be further verified against this file during TLS handshake
--grpc_enable_optional_tls		enable optional TLS mode when a server accepts both TLS and plain-text connections on the same port
--grpc_enable_tracing	boolean	Enable GRPC tracing
--grpc_initial_conn_window_size	int	grpc initial connection window size
--grpc_initial_window_size	int	grpc initial window size
--grpc_keepalive_time	duration	After a duration of this time if the client doesn't see any activity it pings the server to see if the transport is still alive. (default 10s)
--grpc_keepalive_timeout	duration	After having pinged for keepalive check, the client waits for a duration of Timeout and if no activity is seen even after that the connection is closed. (default 10s)
--grpc_key	string	key to use, requires grpc_cert, enables TLS
--grpc_max_connection_age	duration	Maximum age of a client connection before GoAway is sent. (default 2562047h47m16.854775807s)
--grpc_max_connection_age_grace	duration	Additional grace period after grpc_max_connection_age, after which connections are forcibly closed. (default 2562047h47m16.854775807s)
--grpc_max_message_size	int	Maximum allowed RPC message size. Larger messages will be rejected by gRPC with the error 'exceeding the max size'. (default 16777216)
--grpc_port	int	Port to listen on for gRPC calls
--grpc_prometheus	boolean	Enable gRPC monitoring with Prometheus
--grpc_server_ca	string	path to server CA in PEM format, which will be combine with server cert, return full certificate chain to clients
--grpc_server_initial_conn_window_size	int	grpc server initial connection window size
--grpc_server_initial_window_size	int	grpc server initial window size
--grpc_server_keepalive_enforcement_policy_min_time	duration	grpc server minimum keepalive time (default 5m0s)
--grpc_server_keepalive_enforcement_policy_permit_without_stream	boolean	grpc server permit client keepalive pings even when there are no active streams (RPCs)
--jaeger-agent-host	string	host and port to send spans to. if empty, no tracing will be done
--keep_logs	duration	keep logs for this long (using ctime) (zero to keep forever)
--keep_logs_by_mtime	duration	keep logs for this long (using mtime) (zero to keep forever)
--lameduck-period	duration	keep running at least this long after SIGTERM before stopping (default 50ms)
--log_backtrace_at	value	when logging hits line file:N, emit a stack trace
--log_dir	string	If non-empty, write log files in this directory
--log_err_stacks	boolean	log stack traces for errors
--log_rotate_max_size	uint	size in bytes at which logs are rotated (glog.MaxSize) (default 1887436800)
--logtostderr	boolean	log to standard error instead of files
--max-stack-size	int	configure the maximum stack size in bytes (default 67108864)
--onclose_timeout	duration	wait no more than this for OnClose handlers before stopping (default 1ns)
--onterm_timeout	duration	wait no more than this for OnTermSync handlers before stopping (default 10s)
--opentsdb_uri	string	URI of opentsdb /api/put method
--pid_file	string	If set, the process will write its pid to the named file, and delete it on graceful shutdown.
--port	int	port for the server
--pprof	strings	enable profiling
--proxy_tablets	boolean	Setting this true will make vtctld proxy the tablet status instead of redirecting to them
--purge_logs_interval	duration	how often try to remove old logs (default 1h0m0s)
--remote_operation_timeout	duration	time to wait for a remote operation (default 30s)
--s3_backup_aws_endpoint	string	endpoint of the S3 backend (region must be provided)
--s3_backup_aws_region	string	AWS region to use (default "us-east-1")
--s3_backup_aws_retries	int	AWS request retries (default -1)
--s3_backup_force_path_style	boolean	force the s3 path style
--s3_backup_log_level	string	determine the S3 loglevel to use from LogOff, LogDebug, LogDebugWithSigning, LogDebugWithHTTPBody, LogDebugWithRequestRetries, LogDebugWithRequestErrors (default "LogOff")
--s3_backup_server_side_encryption	string	server-side encryption algorithm (e.g., AES256, aws:kms)
--s3_backup_storage_bucket	string	S3 bucket to use for backups
--s3_backup_storage_root	string	root prefix for all backup-related object names
--s3_backup_tls_skip_verify_cert	boolean	skip the 'certificate is valid' check for SSL connections
--schema_change_check_interval	duration	How often the schema change dir is checked for schema changes. This value must be positive; if zero or lower, the default of 1m is used.
--schema_change_controller	string	schema change controller is responsible for finding schema changes and responding to schema change events
--schema_change_dir	string	directory contains schema changes for all keyspaces. Each keyspace has its own directory and schema changes are expected to live in '$KEYSPACE/input' dir. e.g. test_keyspace/input/*sql, each sql file represents a schema change
--schema_change_replicas_timeout	duration	how long to wait for replicas to receive the schema change (default 10s)
--schema_change_user	string	The user who submits this schema change.
--security_policy	string	the name of a registered security policy to use for controlling access to URLs - empty means allow all for anyone (built-in policies: deny-all, read-only)
--service_map	value	comma separated list of services to enable (or disable if prefixed with '-') Example: grpc-queryservice
--sql-max-length-errors	int	truncate queries in error logs to the given length (default unlimited)
--sql-max-length-ui	int	truncate queries in debug UIs to the given length (default 512) (default 512)
--stats_backend	string	The name of the registered push-based monitoring/stats backend to use
--stats_combine_dimensions	string	List of dimensions to be combined into a single "all" value in exported stats vars
--stats_common_tags	strings	Comma-separated list of common tags for the stats backend. It provides both label and values. Example: label1:value1,label2:value2
--stats_drop_variables	string	Variables to be dropped from the list of exported variables.
--stats_emit_period	duration	Interval between emitting stats to all registered backends (default 1m0s)
--stderrthreshold	value	logs at or above this threshold go to stderr (default 1)
--tablet_dir	string	The directory within the vtdataroot to store vttablet/mysql files. Defaults to being generated by the tablet uid.
--tablet_grpc_ca	string	the server ca to use to validate servers when connecting
--tablet_grpc_cert	string	the cert to use to connect
--tablet_grpc_crl	string	the server crl to use to validate server certificates when connecting
--tablet_grpc_key	string	the key to use to connect
--tablet_grpc_server_name	string	the server name to use to validate server certificate
--tablet_health_keep_alive	duration	close streaming tablet health connection if there are no requests for this long (default 5m0s)
--tablet_manager_grpc_ca	string	the server ca to use to validate servers when connecting
--tablet_manager_grpc_cert	string	the cert to use to connect
--tablet_manager_grpc_concurrency	int	concurrency to use to talk to a vttablet server for performance-sensitive RPCs (like ExecuteFetchAs{Dba,AllPrivs,App}) (default 8)
--tablet_manager_grpc_connpool_size	int	number of tablets to keep tmclient connections open to (default 100)
--tablet_manager_grpc_crl	string	the server crl to use to validate server certificates when connecting
--tablet_manager_grpc_key	string	the key to use to connect
--tablet_manager_grpc_server_name	string	the server name to use to validate server certificate
--tablet_manager_protocol	string	the protocol to use to talk to vttablet (default "grpc")
--tablet_protocol	string	how to talk to the vttablets (default "grpc")
--tablet_refresh_interval	duration	Tablet refresh interval. (default 1m0s)
--tablet_refresh_known_tablets		Whether to reload the tablet's address/port map from topo in case they change. (default true)
--tablet_url_template	string	format string describing debug tablet url formatting. See the Go code for getTabletDebugURL() how to customize this. (default "http://{{.GetTabletHostPort}}")
--topo_consul_lock_delay	duration	LockDelay for consul session. (default 15s)
--topo_consul_lock_session_checks	string	List of checks for consul session. (default "serfHealth")
--topo_consul_lock_session_ttl	string	TTL for consul session.
--topo_consul_watch_poll_duration	duration	time of the long poll for watch queries. (default 30s)
--topo_etcd_lease_ttl	int	Lease TTL for locks and leader election. The client will use KeepAlive to keep the lease going. (default 30)
--topo_etcd_tls_ca	string	path to the ca to use to validate the server cert when connecting to the etcd topo server
--topo_etcd_tls_cert	string	path to the client cert to use to connect to the etcd topo server, requires topo_etcd_tls_key, enables TLS
--topo_etcd_tls_key	string	path to the client key to use to connect to the etcd topo server, enables TLS
--topo_global_root	string	the path of the global topology data in the global topology server
--topo_global_server_address	string	the address of the global topology server
--topo_implementation	string	the topology implementation to use
--topo_k8s_context	string	The kubeconfig context to use, overrides the 'current-context' from the config
--topo_k8s_kubeconfig	string	Path to a valid kubeconfig file.
--topo_k8s_namespace	string	The kubernetes namespace to use for all objects. Default comes from the context or in-cluster config
--topo_read_concurrency	int	Concurrency of topo reads. (default 32)
--topo_zk_auth_file	string	auth to use when connecting to the zk topo server, file contents should be :, e.g., digest:user:pass
--topo_zk_base_timeout	duration	zk base timeout (see zk.Connect) (default 30s)
--topo_zk_max_concurrency	int	maximum number of pending requests to send to a Zookeeper server. (default 64)
--topo_zk_tls_ca	string	the server ca to use to validate servers when connecting to the zk topo server
--topo_zk_tls_cert	string	the cert to use to connect to the zk topo server, requires topo_zk_tls_key, enables TLS
--topo_zk_tls_key	string	the key to use to connect to the zk topo server, enables TLS
--tracer	string	tracing service to use (default "noop")
--tracing-enable-logging		whether to enable logging in the tracing service
--tracing-sampling-rate	float	sampling rate for the probabilistic jaeger sampler (default 0.1)
--tracing-sampling-type	string	sampling strategy to use for jaeger. possible values are 'const', 'probabilistic', 'rateLimiting', or 'remote' (default "const")
--v	value	log level for V logs
--version		print binary version
--vmodule	value	comma-separated list of pattern=N settings for file-filtered logging
--vtctl_healthcheck_topology_refresh	duration	refresh interval for re-reading the topology (default 30s)
--vtctld_sanitize_log_messages		When true, vtctld sanitizes logging.

<< vtbackup vtexplain >>

grpc-vtctld — New as of v14 #

Example Usage #

Options #

`grpc-vtctld` — New as of v14 #