`mysqlctl` is a command-line client used for managing `mysqld` instances. It is responsible for bootstrapping tasks such as generating a configuration file for `mysqld` and initializing the instance and its data directory. The `mysqld_safe` watchdog is utilized when present. This helps ensure that `mysqld` is automatically restarted after failures. Usage: mysqlctl [command] Available Commands: completion Generate the autocompletion script for the specified shell help Help about any command init Initializes the directory structure and starts mysqld. init_config Initializes the directory structure, creates my.cnf file, but does not start mysqld. position Compute operations on replication positions reinit_config Reinitializes my.cnf file with new server_id. shutdown Shuts down mysqld, without removing any files. start Starts mysqld on an already 'init'-ed directory. teardown Shuts mysqld down and removes the directory. Flags: --alsologtostderr log to standard error as well as files --app_idle_timeout duration Idle timeout for app connections (default 1m0s) --app_pool_size int Size of the connection pool for app connections (default 40) --catch-sigpipe catch and ignore SIGPIPE on stdout and stderr if specified --config-file string Full path of the config file (with extension) to use. If set, --config-path, --config-type, and --config-name are ignored. --config-file-not-found-handling ConfigFileNotFoundHandling Behavior when a config file is not found. (Options: error, exit, ignore, warn) (default warn) --config-name string Name of the config file (without extension) to search for. (default "vtconfig") --config-path strings Paths to search for config files in. (default [/tmp]) --config-persistence-min-interval duration minimum interval between persisting dynamic config changes back to disk (if no change has occurred, nothing is done). (default 1s) --config-type string Config file type (omit to infer config type from file extension). --db-credentials-file string db credentials file; send SIGHUP to reload this file --db-credentials-server string db credentials server type ('file' - file implementation; 'vault' - HashiCorp Vault implementation) (default "file") --db-credentials-vault-addr string URL to Vault server --db-credentials-vault-path string Vault path to credentials JSON blob, e.g.: secret/data/prod/dbcreds --db-credentials-vault-role-mountpoint string Vault AppRole mountpoint; can also be passed using VAULT_MOUNTPOINT environment variable (default "approle") --db-credentials-vault-role-secretidfile string Path to file containing Vault AppRole secret_id; can also be passed using VAULT_SECRETID environment variable --db-credentials-vault-roleid string Vault AppRole id; can also be passed using VAULT_ROLEID environment variable --db-credentials-vault-timeout duration Timeout for vault API operations (default 10s) --db-credentials-vault-tls-ca string Path to CA PEM for validating Vault server certificate --db-credentials-vault-tokenfile string Path to file containing Vault auth token; token can also be passed using VAULT_TOKEN environment variable --db-credentials-vault-ttl duration How long to cache DB credentials from the Vault server (default 30m0s) --db_charset string Character set/collation used for this tablet. Make sure to configure this to a charset/collation supported by the lowest MySQL version in your environment. (default "utf8mb4") --db_conn_query_info enable parsing and processing of QUERY_OK info fields --db_connect_timeout_ms int connection timeout to mysqld in milliseconds (0 for no timeout) --db_dba_password string db dba password --db_dba_use_ssl Set this flag to false to make the dba connection to not use ssl (default true) --db_dba_user string db dba user userKey (default "vt_dba") --db_flags uint Flag values as defined by MySQL. --db_flavor string Flavor overrid. Valid value is FilePos. --db_host string The host name for the tcp connection. --db_port int tcp port --db_server_name string server name of the DB we are connecting to. --db_socket string The unix socket to connect on. If this is specified, host and port will not be used. --db_ssl_ca string connection ssl ca --db_ssl_ca_path string connection ssl ca path --db_ssl_cert string connection ssl certificate --db_ssl_key string connection ssl key --db_ssl_mode SslMode SSL mode to connect with. One of disabled, preferred, required, verify_ca & verify_identity. --db_tls_min_version string Configures the minimal TLS version negotiated when SSL is enabled. Defaults to TLSv1.2. Options: TLSv1.0, TLSv1.1, TLSv1.2, TLSv1.3. --dba_idle_timeout duration Idle timeout for dba connections (default 1m0s) --dba_pool_size int Size of the connection pool for dba connections (default 20) -h, --help help for mysqlctl --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 traceLocations 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 log stack traces for errors --log_rotate_max_size uint size in bytes at which logs are rotated (glog.MaxSize) (default 1887436800) --logtostderr log to standard error instead of files --max-stack-size int configure the maximum stack size in bytes (default 67108864) --mysql_port int MySQL port. (default 3306) --mysql_server_version string MySQL server version to advertise. (default "8.0.40-Vitess") --mysql_socket string Path to the mysqld socket file. --mysqlctl_client_protocol string the protocol to use to talk to the mysqlctl server (default "grpc") --mysqlctl_mycnf_template string template file to use for generating the my.cnf file during server init --mysqlctl_socket string socket file to use for remote mysqlctl actions (empty for local actions) --onclose_timeout duration wait no more than this for OnClose handlers before stopping (default 10s) --onterm_timeout duration wait no more than this for OnTermSync handlers before stopping (default 10s) --pid_file string If set, the process will write its pid to the named file, and delete it on graceful shutdown. --pool_hostname_resolve_interval duration if set force an update to all hostnames and reconnect if changed, defaults to 0 (disabled) --pprof strings enable profiling --pprof-http enable pprof http endpoints --purge_logs_interval duration how often try to remove old logs (default 1h0m0s) --replication_connect_retry duration how long to wait in between replica reconnect attempts. Only precise to the second. (default 10s) --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 strings comma separated list of services to enable (or disable if prefixed with '-') Example: grpc-queryservice --socket_file string Local unix socket file to listen on --stderrthreshold severityFlag logs at or above this threshold go to stderr (default 1) --table-refresh-interval int interval in milliseconds to refresh tables in status page with refreshRequired class --tablet_dir string The directory within the vtdataroot to store vttablet/mysql files. Defaults to being generated by the tablet uid. --tablet_uid uint32 Tablet UID. (default 41983) --v Level log level for V logs -v, --version print binary version --vmodule vModuleFlag comma-separated list of pattern=N settings for file-filtered logging Use "mysqlctl [command] --help" for more information about a command.