This program enables you to improve the security of your MySQL installation in the following ways:
You can set a password for
root
accounts.You can remove
root
accounts that are accessible from outside the local host.You can remove anonymous-user accounts.
You can remove the
test
database (which by default can be accessed by all users, even anonymous users), and privileges that permit anyone to access databases with names that start withtest_
.
mysql_secure_installation helps you implement security recommendations similar to those described at Section 2.9.4, “Securing the Initial MySQL Account”.
Normal usage is to connect to the local MySQL server; invoke mysql_secure_installation without arguments:
mysql_secure_installation
When executed, mysql_secure_installation prompts you to determine which actions to perform.
The validate_password
plugin can be used for
password strength checking. If the plugin is not installed,
mysql_secure_installation prompts the user
whether to install it. Any passwords entered later are checked
using the plugin if it is enabled.
Most of the usual MySQL client options such as
--host
and
--port
can be
used on the command line and in option files. For example, to
connect to the local server over IPv6 using port 3307, use this
command:
mysql_secure_installation --host=::1 --port=3307
mysql_secure_installation supports the
following options, which can be specified on the command line or
in the [mysql_secure_installation]
and
[client]
groups of an option file. For
information about option files used by MySQL programs, see
Section 4.2.2.2, “Using Option Files”.
Table 4.10 mysql_secure_installation Options
Option Name | Description | Introduced |
---|---|---|
--defaults-extra-file | Read named option file in addition to usual option files | |
--defaults-file | Read only named option file | |
--defaults-group-suffix | Option group suffix value | |
--help | Display help message and exit | |
--host | Host on which MySQL server is located | |
--no-defaults | Read no option files | |
--password | Accepted but always ignored. Whenever mysql_secure_installation is invoked, the user is prompted for a password, regardless | |
--port | TCP/IP port number for connection | |
--print-defaults | Print default options | |
--protocol | Transport protocol to use | |
--socket | Unix socket file or Windows named pipe to use | |
--ssl | Enable connection encryption | |
--ssl-ca | File that contains list of trusted SSL Certificate Authorities | |
--ssl-capath | Directory that contains trusted SSL Certificate Authority certificate files | |
--ssl-cert | File that contains X.509 certificate | |
--ssl-cipher | Permissible ciphers for connection encryption | |
--ssl-crl | File that contains certificate revocation lists | |
--ssl-crlpath | Directory that contains certificate revocation-list files | |
--ssl-key | File that contains X.509 key | |
--ssl-mode | Desired security state of connection to server | 5.7.11 |
--ssl-verify-server-cert | Verify host name against server certificate Common Name identity | |
--tls-version | Permissible TLS protocols for encrypted connections | 5.7.10 |
--use-default | Execute with no user interactivity | |
--user | MySQL user name to use when connecting to server |
--help
,-?
Command-Line Format --help
Display a help message and exit.
--defaults-extra-file=
file_name
Command-Line Format --defaults-extra-file=file_name
Type File name Read this option file after the global option file but (on Unix) before the user option file. If the file does not exist or is otherwise inaccessible, an error occurs. If
file_name
is not an absolute path name, it is interpreted relative to the current directory.For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.
-
Command-Line Format --defaults-file=file_name
Type File name Use only the given option file. If the file does not exist or is otherwise inaccessible, an error occurs. If
file_name
is not an absolute path name, it is interpreted relative to the current directory.For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.
-
Command-Line Format --defaults-group-suffix=str
Type String Read not only the usual option groups, but also groups with the usual names and a suffix of
str
. For example, mysql_secure_installation normally reads the[client]
and[mysql_secure_installation]
groups. If this option is given as--defaults-group-suffix=_other
, mysql_secure_installation also reads the[client_other]
and[mysql_secure_installation_other]
groups.For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.
--host=
,host_name
-h
host_name
Command-Line Format --host
Connect to the MySQL server on the given host.
-
Command-Line Format --no-defaults
Do not read any option files. If program startup fails due to reading unknown options from an option file,
--no-defaults
can be used to prevent them from being read.The exception is that the
.mylogin.cnf
file is read in all cases, if it exists. This permits passwords to be specified in a safer way than on the command line even when--no-defaults
is used. To create.mylogin.cnf
, use the mysql_config_editor utility. See Section 4.6.6, “mysql_config_editor — MySQL Configuration Utility”.For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.
--password=
,password
-p
password
Command-Line Format --password=password
Type String Default Value [none]
This option is accepted but ignored. Whether or not this option is used, mysql_secure_installation always prompts the user for a password.
--port=
,port_num
-P
port_num
Command-Line Format --port=port_num
Type Numeric Default Value 3306
For TCP/IP connections, the port number to use.
-
Command-Line Format --print-defaults
Print the program name and all options that it gets from option files.
For additional information about this and other option-file options, see Section 4.2.2.3, “Command-Line Options that Affect Option-File Handling”.
--protocol={TCP|SOCKET|PIPE|MEMORY}
Command-Line Format --protocol=type
Type String Default Value [see text]
Valid Values TCP
SOCKET
PIPE
MEMORY
The transport protocol to use for connecting to the server. It is useful when the other connection parameters normally result in use of a protocol other than the one you want. For details on the permissible values, see Section 4.2.5, “Connection Transport Protocols”.
--socket=
,path
-S
path
Command-Line Format --socket={file_name|pipe_name}
Type String For connections to
localhost
, the Unix socket file to use, or, on Windows, the name of the named pipe to use.On Windows, this option applies only if the server was started with the
named_pipe
system variable enabled to support named-pipe connections. In addition, the user making the connection must be a member of the Windows group specified by thenamed_pipe_full_access_group
system variable.Options that begin with
--ssl
specify whether to connect to the server using encryption and indicate where to find SSL keys and certificates. See Command Options for Encrypted Connections.-
Command-Line Format --tls-version=protocol_list
Introduced 5.7.10 Type String Default Value (≥ 5.7.28) TLSv1,TLSv1.1,TLSv1.2
Default Value (≤ 5.7.27) TLSv1,TLSv1.1,TLSv1.2
(OpenSSL)TLSv1,TLSv1.1
(yaSSL)The permissible TLS protocols for encrypted connections. The value is a list of one or more comma-separated protocol names. The protocols that can be named for this option depend on the SSL library used to compile MySQL. For details, see Section 6.3.2, “Encrypted Connection TLS Protocols and Ciphers”.
This option was added in MySQL 5.7.10.
-
Command-Line Format --use-default
Type Boolean Execute noninteractively. This option can be used for unattended installation operations.
--user=
,user_name
-u
user_name
Command-Line Format --user=user_name
Type String The user name of the MySQL account to use for connecting to the server.