https://docs.oracle.com/cd/E17952_01/mysql-8.4-relnotes-en/mysql-8.4-relnotes-en.pdf
リリースされていたので手元のマシンに入れてみるところまでをやってみる。(ソースビルドだと数時間かかりそうなのでとりあえずバイナリでやめておく...)
ダウンロード&解凍
$ wget https://dev.mysql.com/get/Downloads/MySQL-8.4/mysql-8.4.0-linux-glibc2.28-x86_64.tar $ tar -xvf mysql-8.4.0-linux-glibc2.28-x86_64.tar $ tar -xvf mysql-8.4.0-linux-glibc2.28-x86_64.tar.xz $ ls -1 mysql-8.4.0-linux-glibc2.28-x86_64 mysql-8.4.0-linux-glibc2.28-x86_64.tar mysql-8.4.0-linux-glibc2.28-x86_64.tar.xz mysql-router-8.4.0-linux-glibc2.28-x86_64.tar.xz mysql-test-8.4.0-linux-glibc2.28-x86_64.tar.xz
datadirを作って動かしてみる
bin/mysqld
できた
mysql> status -------------- bin/mysql Ver 8.4.0 for Linux on x86_64 (MySQL Community Server - GPL) Connection id: 10 Current database: Current user: root@localhost SSL: Not in use Current pager: stdout Using outfile: '' Using delimiter: ; Server version: 8.4.0 Protocol version: 10 Connection: Localhost via UNIX socket Server characterset: utf8mb4 Db characterset: utf8mb4 Client characterset: utf8mb4 Conn. characterset: utf8mb4 UNIX socket: /tmp/mysql.sock Binary data as: Hexadecimal Uptime: 5 min 22 sec Threads: 2 Questions: 9 Slow queries: 0 Opens: 146 Flush tables: 3 Open tables: 65 Queries per second avg: 0.027 --------------
mysql_native_passwordの話
mysql_native_passwordのユーザーを使いたい場合はこれだけだと接続エラーになるので```my.cnfに以下を追記する(mysql_native_passwordが非推奨になったやつ。8.4.0)
[mysqld] mysql_native_password=ON
パスワードリセットを促されるのでリセット
mysql> status ERROR 1820 (HY000): You must reset your password using ALTER USER statement before executing this statement.
plugin一覧をみると一応プラグイン自体は入っている模様
mysql> show plugins; +----------------------------------+----------+--------------------+---------+---------+ | Name | Status | Type | Library | License | +----------------------------------+----------+--------------------+---------+---------+ | binlog | ACTIVE | STORAGE ENGINE | NULL | GPL | | sha256_password | ACTIVE | AUTHENTICATION | NULL | GPL | | caching_sha2_password | ACTIVE | AUTHENTICATION | NULL | GPL | | sha2_cache_cleaner | ACTIVE | AUDIT | NULL | GPL | | daemon_keyring_proxy_plugin | ACTIVE | DAEMON | NULL | GPL | | CSV | ACTIVE | STORAGE ENGINE | NULL | GPL | | MEMORY | ACTIVE | STORAGE ENGINE | NULL | GPL | | InnoDB | ACTIVE | STORAGE ENGINE | NULL | GPL | | INNODB_TRX | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_CMP | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_CMP_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_CMPMEM | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_CMPMEM_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_CMP_PER_INDEX | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_CMP_PER_INDEX_RESET | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_BUFFER_PAGE | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_BUFFER_PAGE_LRU | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_BUFFER_POOL_STATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_TEMP_TABLE_INFO | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_METRICS | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_FT_DEFAULT_STOPWORD | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_FT_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_FT_BEING_DELETED | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_FT_CONFIG | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_FT_INDEX_CACHE | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_FT_INDEX_TABLE | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_TABLES | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_TABLESTATS | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_INDEXES | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_TABLESPACES | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_COLUMNS | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_VIRTUAL | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_CACHED_INDEXES | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | INNODB_SESSION_TEMP_TABLESPACES | ACTIVE | INFORMATION SCHEMA | NULL | GPL | | MyISAM | ACTIVE | STORAGE ENGINE | NULL | GPL | | MRG_MYISAM | ACTIVE | STORAGE ENGINE | NULL | GPL | | PERFORMANCE_SCHEMA | ACTIVE | STORAGE ENGINE | NULL | GPL | | TempTable | ACTIVE | STORAGE ENGINE | NULL | GPL | | ARCHIVE | ACTIVE | STORAGE ENGINE | NULL | GPL | | BLACKHOLE | ACTIVE | STORAGE ENGINE | NULL | GPL | | FEDERATED | DISABLED | STORAGE ENGINE | NULL | GPL | | ndbcluster | DISABLED | STORAGE ENGINE | NULL | GPL | | ndbinfo | DISABLED | STORAGE ENGINE | NULL | GPL | | ndb_transid_mysql_connection_map | DISABLED | INFORMATION SCHEMA | NULL | GPL | | ngram | ACTIVE | FTPARSER | NULL | GPL | | mysqlx_cache_cleaner | ACTIVE | AUDIT | NULL | GPL | | mysqlx | ACTIVE | DAEMON | NULL | GPL | | mysql_native_password | ACTIVE | AUTHENTICATION | NULL | GPL | +----------------------------------+----------+--------------------+---------+---------+ 48 rows in set (0.01 sec)
どうなるんだろうと思っていたので使えるようでひとまず良かった。とはいえ非推奨ではあるので変えていきましょうはそうなんですよねぇ。
SQL_CALC_FOUND_ROWS
使えた。一安心w
mysql> use db1
Database changed
mysql> CREATE TABLE employees (
-> id INT AUTO_INCREMENT PRIMARY KEY,
-> name VARCHAR(255),
-> position VARCHAR(255)
-> );
Query OK, 0 rows affected (0.02 sec)
mysql> INSERT INTO employees (name, position) VALUES
-> ('John Doe', 'Manager'),
-> ('Jane Smith', 'Developer'),
-> ('Alice Johnson', 'Designer'),
-> ('Bob Brown', 'Developer');
Query OK, 4 rows affected (0.01 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql> SELECT SQL_CALC_FOUND_ROWS * FROM employees LIMIT 2;
+----+------------+-----------+
| id | name | position |
+----+------------+-----------+
| 1 | John Doe | Manager |
| 2 | Jane Smith | Developer |
+----+------------+-----------+
2 rows in set, 1 warning (0.00 sec)
SLAVEやMASTERと入っているコマンド
この辺は言われていた通り廃止になっている。mysqld_exporterは対応待ちとなりそう(if文足すだけなのですぐに終わるはず)。ローカルにある手順とかを書き換えるみたいなことすれば終わるのでまあ問題はないでしょう。
ただvariablesにはあるっぽい？
mysql> show variables like '%slave%'; +-----------------------------+---------------+ | Variable_name | Value | +-----------------------------+---------------+ | init_slave | | | log_slave_updates | ON | | log_slow_slave_statements | OFF | | pseudo_slave_mode | OFF | | rpl_stop_slave_timeout | 31536000 | | skip_slave_start | OFF | | slave_allow_batching | ON | | slave_checkpoint_group | 512 | | slave_checkpoint_period | 300 | | slave_compressed_protocol | OFF | | slave_exec_mode | STRICT | | slave_load_tmpdir | /tmp | | slave_max_allowed_packet | 1073741824 | | slave_net_timeout | 60 | | slave_parallel_type | LOGICAL_CLOCK | | slave_parallel_workers | 4 | | slave_pending_jobs_size_max | 134217728 | | slave_preserve_commit_order | ON | | slave_skip_errors | OFF | | slave_sql_verify_checksum | ON | | slave_transaction_retries | 10 | | slave_type_conversions | | | sql_slave_skip_counter | 0 | +-----------------------------+---------------+ 23 rows in set (0.01 sec)
mysqlpumpがなくなった
一度も使わなかった...さよなら...
MySQL Shellを使ってねとのこと
