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【已解决】mysqldump导出mysql中某个数据库的某个表始终出错:Got error 1045: Access denied for user root@IP using password: NO when trying to connect

MySQL crifan 67浏览 0评论

想要对于阿里云的RDS的mysql,去用mysqldump导出其中的一个database数据库的一个table表

参考之前写法,结果都是出错:

<code>[root@xx-general-01 for_bacup_mysql]# mysqldump --host=your_host --port=port --user=root —-password=your_pwd --default-character-set=utf8 dbname keyword &gt; aliyun_rds_xxx_mysql_keyword_180705.sql
mysqldump: Got error: 1045: "Access denied for user 'root'@'ip' (using password: NO)" when trying to connect
[root@xx-general-01 for_bacup_mysql]# mysqldump -h your_host -P port -uroot —pyour_pwd dbanme keyword &gt; aliyun_rds_xxx_mysql_keyword_180705.sql
mysqldump: Got error: 1045: "Access denied for user 'root'@'ip' (using password: NO)" when trying to connect
[root@xx-general-01 for_bacup_mysql]# mysqldump -h your_host -P port -u root —p your_pwd dbanme keyword &gt; aliyun_rds_xxx_mysql_keyword_180705.sql
mysqldump: Got error: 1045: "Access denied for user 'root'@'ip' (using password: NO)" when trying to connect
[root@xx-general-01 for_bacup_mysql]# mysqldump -h your_host -P port -u root dbname keyword &gt; aliyun_rds_xxx_mysql_keyword_180705.sql
mysqldump: Got error: 1045: "Access denied for user 'root'@'ip' (using password: NO)" when trying to connect
</code>

看到之前自己的写法是:

<code>[root@xx-general-01 for_bacup_mysql]# cat mysqldump_xxx.sh
mysqldump -h  your_host -P port -B dbanme -uroot -pYOUR_PWD | gzip &gt; aliyun_mysql_xxx_20180427.sql.gz
</code>

在去看了看help:

<code>[root@xxx-general-01 for_bacup_mysql]# mysqldump --help
mysqldump  Ver 10.14 Distrib 5.5.56-MariaDB, for Linux (x86_64)
Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others.

Dumping structure and contents of MySQL databases and tables.
Usage: mysqldump [OPTIONS] database [tables]
OR     mysqldump [OPTIONS] --databases [OPTIONS] DB1 [DB2 DB3...]
OR     mysqldump [OPTIONS] --all-databases [OPTIONS]

Default options are read from the following files in the given order:
/etc/mysql/my.cnf /etc/my.cnf ~/.my.cnf
The following groups are read: mysqldump client client-server client-mariadb
The following options may be given as the first argument:
--print-defaults        Print the program argument list and exit.
--no-defaults           Don't read default options from any option file.
--defaults-file=#       Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.

  -A, --all-databases Dump all the databases. This will be same as --databases
                      with all databases selected.
  -Y, --all-tablespaces
                      Dump all the tablespaces.
  -y, --no-tablespaces
                      Do not dump any tablespace information.
  --add-drop-database Add a DROP DATABASE before each create.
  --add-drop-table    Add a DROP TABLE before each create.
                      (Defaults to on; use --skip-add-drop-table to disable.)
  --add-locks         Add locks around INSERT statements.
                      (Defaults to on; use --skip-add-locks to disable.)
  --allow-keywords    Allow creation of column names that are keywords.
  --apply-slave-statements
                      Adds 'STOP SLAVE' prior to 'CHANGE MASTER' and 'START
                      SLAVE' to bottom of dump.
  --character-sets-dir=name
                      Directory for character set files.
  -i, --comments      Write additional information.
                      (Defaults to on; use --skip-comments to disable.)
  --compatible=name   Change the dump to be compatible with a given mode. By
                      default tables are dumped in a format optimized for
                      MySQL. Legal modes are: ansi, mysql323, mysql40,
                      postgresql, oracle, mssql, db2, maxdb, no_key_options,
                      no_table_options, no_field_options. One can use several
                      modes separated by commas. Note: Requires MySQL server
                      version 4.1.0 or higher. This option is ignored with
                      earlier server versions.
  --compact           Give less verbose output (useful for debugging). Disables
                      structure comments and header/footer constructs.  Enables
                      options --skip-add-drop-table --skip-add-locks
                      --skip-comments --skip-disable-keys --skip-set-charset.
  -c, --complete-insert
                      Use complete insert statements.
  -C, --compress      Use compression in server/client protocol.
  -a, --create-options
                      Include all MySQL specific create options.
                      (Defaults to on; use --skip-create-options to disable.)
  -B, --databases     Dump several databases. Note the difference in usage; in
                      this case no tables are given. All name arguments are
                      regarded as database names. 'USE db_name;' will be
                      included in the output.
  -#, --debug[=#]     This is a non-debug version. Catch this and exit.
  --debug-check       Check memory and open file usage at exit.
  --debug-info        Print some debug info at exit.
  --default-character-set=name
                      Set the default character set.
  --delayed-insert    Insert rows with INSERT DELAYED.
  --delete-master-logs
                      Delete logs on master after backup. This automatically
                      enables --master-data.
  -K, --disable-keys  '/*!40000 ALTER TABLE tb_name DISABLE KEYS */; and
                      '/*!40000 ALTER TABLE tb_name ENABLE KEYS */; will be put
                      in the output.
                      (Defaults to on; use --skip-disable-keys to disable.)
  --dump-slave[=#]    This causes the binary log position and filename of the
                      master to be appended to the dumped data output. Setting
                      the value to 1, will printit as a CHANGE MASTER command
                      in the dumped data output; if equal to 2, that command
                      will be prefixed with a comment symbol. This option will
                      turn --lock-all-tables on, unless --single-transaction is
                      specified too (in which case a global read lock is only
                      taken a short time at the beginning of the dump - don't
                      forget to read about --single-transaction below). In all
                      cases any action on logs will happen at the exact moment
                      of the dump.Option automatically turns --lock-tables off.
  -E, --events        Dump events.
  -e, --extended-insert
                      Use multiple-row INSERT syntax that include several
                      VALUES lists.
                      (Defaults to on; use --skip-extended-insert to disable.)
  --fields-terminated-by=name
                      Fields in the output file are terminated by the given
                      string.
  --fields-enclosed-by=name
                      Fields in the output file are enclosed by the given
                      character.
  --fields-optionally-enclosed-by=name
                      Fields in the output file are optionally enclosed by the
                      given character.
  --fields-escaped-by=name
                      Fields in the output file are escaped by the given
                      character.
  -F, --flush-logs    Flush logs file in server before starting dump. Note that
                      if you dump many databases at once (using the option
                      --databases= or --all-databases), the logs will be
                      flushed for each database dumped. The exception is when
                      using --lock-all-tables or --master-data: in this case
                      the logs will be flushed only once, corresponding to the
                      moment all tables are locked. So if you want your dump
                      and the log flush to happen at the same exact moment you
                      should use --lock-all-tables or --master-data with
                      --flush-logs.
  --flush-privileges  Emit a FLUSH PRIVILEGES statement after dumping the mysql
                      database.  This option should be used any time the dump
                      contains the mysql database and any other database that
                      depends on the data in the mysql database for proper
                      restore.
  -f, --force         Continue even if we get an SQL error.
  -?, --help          Display this help message and exit.
  --hex-blob          Dump binary strings (BINARY, VARBINARY, BLOB) in
                      hexadecimal format.
  -h, --host=name     Connect to host.
  --ignore-table=name Do not dump the specified table. To specify more than one
                      table to ignore, use the directive multiple times, once
                      for each table.  Each table must be specified with both
                      database and table names, e.g.,
                      --ignore-table=database.table.
  --include-master-host-port
                      Adds 'MASTER_HOST=&lt;host&gt;, MASTER_PORT=&lt;port&gt;' to 'CHANGE
                      MASTER TO..' in dump produced with --dump-slave.
  --insert-ignore     Insert rows with INSERT IGNORE.
  --lines-terminated-by=name
                      Lines in the output file are terminated by the given
                      string.
  -x, --lock-all-tables
                      Locks all tables across all databases. This is achieved
                      by taking a global read lock for the duration of the
                      whole dump. Automatically turns --single-transaction and
                      --lock-tables off.
  -l, --lock-tables   Lock all tables for read.
                      (Defaults to on; use --skip-lock-tables to disable.)
  --log-error=name    Append warnings and errors to given file.
  --master-data[=#]   This causes the binary log position and filename to be
                      appended to the output. If equal to 1, will print it as a
                      CHANGE MASTER command; if equal to 2, that command will
                      be prefixed with a comment symbol. This option will turn
                      --lock-all-tables on, unless --single-transaction is
                      specified too (on servers before MariaDB 5.3 this will
                      still take a global read lock for a short time at the
                      beginning of the dump; don't forget to read about
                      --single-transaction below). In all cases, any action on
                      logs will happen at the exact moment of the dump. Option
                      automatically turns --lock-tables off.
  --max-allowed-packet=#
                      The maximum packet length to send to or receive from
                      server.
  --net-buffer-length=#
                      The buffer size for TCP/IP and socket communication.
  --no-autocommit     Wrap tables with autocommit/commit statements.
  -n, --no-create-db  Suppress the CREATE DATABASE ... IF EXISTS statement that
                      normally is output for each dumped database if
                      --all-databases or --databases is given.
  -t, --no-create-info
                      Don't write table creation info.
  -d, --no-data       No row information.
  -N, --no-set-names  Same as --skip-set-charset.
  --opt               Same as --add-drop-table, --add-locks, --create-options,
                      --quick, --extended-insert, --lock-tables, --set-charset,
                      and --disable-keys. Enabled by default, disable with
                      --skip-opt.
  --order-by-primary  Sorts each table's rows by primary key, or first unique
                      key, if such a key exists.  Useful when dumping a MyISAM
                      table to be loaded into an InnoDB table, but will make
                      the dump itself take considerably longer.
  -p, --password[=name]
                      Password to use when connecting to server. If password is
                      not given it's solicited on the tty.
  -P, --port=#        Port number to use for connection.
  --protocol=name     The protocol to use for connection (tcp, socket, pipe,
                      memory).
  -q, --quick         Don't buffer query, dump directly to stdout.
                      (Defaults to on; use --skip-quick to disable.)
  -Q, --quote-names   Quote table and column names with backticks (`).
                      (Defaults to on; use --skip-quote-names to disable.)
  --replace           Use REPLACE INTO instead of INSERT INTO.
  -r, --result-file=name
                      Direct output to a given file. This option should be used
                      in systems (e.g., DOS, Windows) that use carriage-return
                      linefeed pairs (\r\n) to separate text lines. This option
                      ensures that only a single newline is used.
  -R, --routines      Dump stored routines (functions and procedures).
  --set-charset       Add 'SET NAMES default_character_set' to the output.
                      (Defaults to on; use --skip-set-charset to disable.)
  --single-transaction
                      Creates a consistent snapshot by dumping all tables in a
                      single transaction. Works ONLY for tables stored in
                      storage engines which support multiversioning (currently
                      only InnoDB does); the dump is NOT guaranteed to be
                      consistent for other storage engines. While a
                      --single-transaction dump is in process, to ensure a
                      valid dump file (correct table contents and binary log
                      position), no other connection should use the following
                      statements: ALTER TABLE, DROP TABLE, RENAME TABLE,
                      TRUNCATE TABLE, as consistent snapshot is not isolated
                      from them. Option automatically turns off --lock-tables.
  --dump-date         Put a dump date to the end of the output.
                      (Defaults to on; use --skip-dump-date to disable.)
  --skip-opt          Disable --opt. Disables --add-drop-table, --add-locks,
                      --create-options, --quick, --extended-insert,
                      --lock-tables, --set-charset, and --disable-keys.
  -S, --socket=name   The socket file to use for connection.
  --ssl               Enable SSL for connection (automatically enabled with
                      other flags).
  --ssl-ca=name       CA file in PEM format (check OpenSSL docs, implies
                      --ssl).
  --ssl-capath=name   CA directory (check OpenSSL docs, implies --ssl).
  --ssl-cert=name     X509 cert in PEM format (implies --ssl).
  --ssl-cipher=name   SSL cipher to use (implies --ssl).
  --ssl-key=name      X509 key in PEM format (implies --ssl).
  --ssl-verify-server-cert
                      Verify server's "Common Name" in its cert against
                      hostname used when connecting. This option is disabled by
                      default.
  -T, --tab=name      Create tab-separated textfile for each table to given
                      path. (Create .sql and .txt files.) NOTE: This only works
                      if mysqldump is run on the same machine as the mysqld
                      server.
  --tables            Overrides option --databases (-B).
  --triggers          Dump triggers for each dumped table.
                      (Defaults to on; use --skip-triggers to disable.)
  --tz-utc            SET TIME_ZONE='+00:00' at top of dump to allow dumping of
                      TIMESTAMP data when a server has data in different time
                      zones or data is being moved between servers with
                      different time zones.
                      (Defaults to on; use --skip-tz-utc to disable.)
  -u, --user=name     User for login if not current user.
  -v, --verbose       Print info about the various stages.
  -V, --version       Output version information and exit.
  -w, --where=name    Dump only selected records. Quotes are mandatory.
  -X, --xml           Dump a database as well formed XML.
  --plugin-dir=name   Directory for client-side plugins.
  --default-auth=name Default authentication client-side plugin to use.
</code>

所以去试试:

<code>mysqldump -h your_host -P port -B dbanme keyword -uroot -pyour_pwd &gt; aliyun_rds_xxx_mysql_keyword_180705.sql
</code>

好像没有提示之前错误,不过有:

<code>[root@xxx-general-01 for_bacup_mysql]# mysqldump -h your_host -P port -B dbanme keyword -uroot -ppwd &gt; aliyun_rds_xxx_mysql_keyword_180705.sql
mysqldump: Got error: 1049: "Unknown database 'keyword'" when selecting the database
</code>

好像不是直接放table到db后面的?

经过一番调试和对比,最终发现是:

<code>--password
</code>

中的第一个短横线是中文的短横线,不是英文的短横线

-》从VSCode中,选中一个英文的短横线,结果password的第一个没有被选中,才注意出来的:

-》后来放到VSCode的搜索框中,就容易看出不一样了:

长度明显不一样,但是文件编辑区域中,中英文的短横线,长度很难看出区别

-》其中:

正常登录的命令:

<code>mysqldump -h your_host -P port --user=root --password=your_pwd dbname keyword &gt; aliyun_rds_xxx_mysql_keyword_180705_2.sql
</code>

-》其中的password的第一个短横线是(正常的)英文短横线

-》可以识别密码,正常登录和操作mysql

无法登录的命令:

<code>mysqldump --host=your_host --port=port --user=root —-password=your_pwd dbanme keyword &gt; aliyun_rds_xxx_mysql_keyword_180705_3.sql
</code>

-》其中的password的第一个短横线不是英文短横线

-》导致密码错误,无法登录和操作mysql

-〉而之所以会出现中文的短横线,是因为印象笔记搞的鬼:

【已解决】如何禁止Mac中印象笔记中自动合并两个连续英文短横线为单个中文短横线

【总结】

此次是由于Mac的自作聪明,导致把两个连续的短横线合并成单个中文短横线了,导致mysqldump没法识别正常的

–password

导致报错:

<code>mysqldump: Got error: 1045: "Access denied for user 'root'@'xxx' (using password: NO)" when trying to connect
</code>

解决办法很简单:

确保参数前面的2个短横线是英文的短横线。

而彻底避免之后的2个短横线再被合并替换,则需要去:(不是印象笔记的事情,是Mac的OS的事情)Mac系统中:

系统偏好设置-》键盘-〉文本-》取消选择:使用智能引号和破折号

即可。

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