今天在學(xué)習(xí)mysql 二進(jìn)制日志的時(shí)候需要在編輯my.cnf的文件，產(chǎn)生的一系列報(bào)錯(cuò)，個(gè)人的排錯(cuò)思路和方法，僅供參考。

重啟damon、重啟mysql 發(fā)現(xiàn)報(bào)錯(cuò)

Starting MySQL. ERROR! The server quit without updating PID file (/usr/local/mysql/data/mysqld.pid).

發(fā)現(xiàn)注釋這三行配置之后發(fā)現(xiàn)可以正常啟動(dòng)，那么問題就出現(xiàn)在這三行代碼上

log-bin = mysql-bin??
#binlog_expire_logs_seconds = 600
#max_binlog_size = 200M

?查詢?nèi)罩景l(fā)現(xiàn)報(bào)錯(cuò)：You have enabled the binary log, but you haven't provided the mandatory server-id. Please refer to the proper server start-up parameters documentation#您已經(jīng)啟用了二進(jìn)制日志，但是沒有提供必需的服務(wù)器id。請(qǐng)參考適當(dāng)?shù)姆?wù)器啟動(dòng)參數(shù)文檔

?經(jīng)過百度發(fā)現(xiàn)：MySQL 5.7.3以后版本必須配置server-id，否則無法啟用MySQL二進(jìn)制日志
?嘗試啟動(dòng) 在my.cnf中添加 server-id = 1 ? 唯一的服務(wù)辨識(shí)號(hào),數(shù)值位于 1 到 2^32-1之間。此值在master和slave上都需要設(shè)置。
如果 “master-host” 沒有被設(shè)置,則默認(rèn)為1, 但是如果忽略此選項(xiàng),MySQL不會(huì)作為master生效

添加參數(shù)，并嘗試啟動(dòng)。?

發(fā)現(xiàn)又報(bào)錯(cuò)：Can't connect to local MySQL server through socket '/tmp/mysql.sock'

mysql的連接方式有兩種:一種是TCP/IP、一種是socket連接

mysql.sock的作用是程序與mysqlserver處于同一臺(tái)機(jī)器，發(fā)起本地連接時(shí)可用。?
連接localhost通常通過一個(gè)Unix域套接字文件進(jìn)行，一般是/tmp/mysql.sock。
如果套接字文件被刪除了，本地客戶就不能連接。/tmp 文件夾屬于臨時(shí)文件，隨時(shí)可能被刪除。
每次mysql 啟動(dòng)的時(shí)候，都會(huì)生成一個(gè)mysql.sock 的文件，

socket = /var/lib/mysql/mysql.sock???建議將sock文件移動(dòng)至下var/lib/mysql/??

嘗試重新啟動(dòng) 發(fā)現(xiàn)還是報(bào)錯(cuò)?Starting MySQL. ERROR! The server quit without updating PID file

排錯(cuò)：

?1.?檢查目錄權(quán)限 ? ?

?2. selinux是否關(guān)閉??

?3. 檢查my.cnf參數(shù) port,datadir,basedir,socket 是否配置正常

排錯(cuò)發(fā)現(xiàn)是我配置sock目錄時(shí)候，并沒有給予權(quán)限

chown -R mysql:mysql?/var/lib/mysql/? ?#設(shè)置權(quán)限，并查看
ls -alh | grep mysql
drwxr-xr-x.  2 mysql   mysql      6 Sep 14 16:19 mysql

再次嘗試啟動(dòng)mysql 發(fā)現(xiàn)還是報(bào)錯(cuò)：Starting MySQL. ERROR! The server quit without updating PID file (/usr/local/mysql/data/mysqld.pid).

1. tail -f /usr/local/mysql/data/mysql.err? /查詢MySQL自帶的日志文件mysql.err

?#發(fā)現(xiàn)沒有關(guān)鍵錯(cuò)誤信息

?2.?tail /var/log/messages? #記錄了絕大多數(shù)的系統(tǒng)日志?

?2022-09-15T06:32:03.776090Z 0 [Note] --secure-file-priv is set to NULL. Operations related to importing and exporting data are disabled
2022-09-15T06:32:03.776188Z 0 [Note] /usr/local/mysql/bin/mysqld (mysqld 5.7.33-log) starting as process 57901 ...
2022-09-15T06:32:03.780168Z 0 [Note] InnoDB: PUNCH HOLE support available
2022-09-15T06:32:03.780229Z 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2022-09-15T06:32:03.780253Z 0 [Note] InnoDB: Uses event mutexes
2022-09-15T06:32:03.780278Z 0 [Note] InnoDB: GCC builtin __atomic_thread_fence() is used for memory barrier
2022-09-15T06:32:03.780411Z 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2022-09-15T06:32:03.780419Z 0 [Note] InnoDB: Using Linux native AIO
2022-09-15T06:32:03.780605Z 0 [Note] InnoDB: Number of pools: 1
2022-09-15T06:32:03.780695Z 0 [Note] InnoDB: Using CPU crc32 instructions
2022-09-15T06:32:03.781783Z 0 [Note] InnoDB: Initializing buffer pool, total size = 128M, instances = 1, chunk size = 128M
2022-09-15T06:32:03.787253Z 0 [Note] InnoDB: Completed initialization of buffer pool
2022-09-15T06:32:03.789167Z 0 [Note] InnoDB: If the mysqld execution user is authorized, page cleaner thread priority can be changed. See the man page of setpriority().
2022-09-15T06:32:03.800452Z 0 [Note] InnoDB: Highest supported file format is Barracuda.
2022-09-15T06:32:03.805695Z 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2022-09-15T06:32:03.805865Z 0 [Note] InnoDB: Setting file './ibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2022-09-15T06:32:03.819123Z 0 [Note] InnoDB: File './ibtmp1' size is now 12 MB.
2022-09-15T06:32:03.820045Z 0 [Note] InnoDB: 96 redo rollback segment(s) found. 96 redo rollback segment(s) are active.
2022-09-15T06:32:03.820088Z 0 [Note] InnoDB: 32 non-redo rollback segment(s) are active.
2022-09-15T06:32:03.821153Z 0 [Note] InnoDB: Waiting for purge to start
2022-09-15T06:32:03.872143Z 0 [Note] InnoDB: 5.7.33 started; log sequence number 2980979
2022-09-15T06:32:03.872679Z 0 [Note] InnoDB: Loading buffer pool(s) from /usr/local/mysql/data/ib_buffer_pool
2022-09-15T06:32:03.872896Z 0 [Note] Plugin 'FEDERATED' is disabled.
2022-09-15T06:32:03.873741Z 0 [Note] InnoDB: Buffer pool(s) load completed at 220915 14:32:03
2022-09-15T06:32:03.875555Z 0 [ERROR] unknown variable 'binlog_expire_logs_seconds=600'
2022-09-15T06:32:03.875596Z 0 [ERROR] Aborting

2022-09-15T06:32:03.875610Z 0 [Note] Binlog end
2022-09-15T06:32:03.875666Z 0 [Note] Shutting down plugin 'ngram'
2022-09-15T06:32:03.875678Z 0 [Note] Shutting down plugin 'partition'
2022-09-15T06:32:03.875681Z 0 [Note] Shutting down plugin 'BLACKHOLE'
2022-09-15T06:32:03.875684Z 0 [Note] Shutting down plugin 'ARCHIVE'
2022-09-15T06:32:03.875687Z 0 [Note] Shutting down plugin 'PERFORMANCE_SCHEMA'
2022-09-15T06:32:03.875727Z 0 [Note] Shutting down plugin 'MRG_MYISAM'
2022-09-15T06:32:03.875730Z 0 [Note] Shutting down plugin 'MyISAM'
2022-09-15T06:32:03.875738Z 0 [Note] Shutting down plugin 'INNODB_SYS_VIRTUAL'
2022-09-15T06:32:03.875741Z 0 [Note] Shutting down plugin 'INNODB_SYS_DATAFILES'
2022-09-15T06:32:03.875742Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESPACES'
2022-09-15T06:32:03.875744Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN_COLS'
2022-09-15T06:32:03.875745Z 0 [Note] Shutting down plugin 'INNODB_SYS_FOREIGN'
2022-09-15T06:32:03.875746Z 0 [Note] Shutting down plugin 'INNODB_SYS_FIELDS'
2022-09-15T06:32:03.875748Z 0 [Note] Shutting down plugin 'INNODB_SYS_COLUMNS'
2022-09-15T06:32:03.875749Z 0 [Note] Shutting down plugin 'INNODB_SYS_INDEXES'
2022-09-15T06:32:03.875751Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLESTATS'
2022-09-15T06:32:03.875752Z 0 [Note] Shutting down plugin 'INNODB_SYS_TABLES'
2022-09-15T06:32:03.875754Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_TABLE'
2022-09-15T06:32:03.875755Z 0 [Note] Shutting down plugin 'INNODB_FT_INDEX_CACHE'
2022-09-15T06:32:03.875757Z 0 [Note] Shutting down plugin 'INNODB_FT_CONFIG'
2022-09-15T06:32:03.875758Z 0 [Note] Shutting down plugin 'INNODB_FT_BEING_DELETED'
2022-09-15T06:32:03.875760Z 0 [Note] Shutting down plugin 'INNODB_FT_DELETED'
2022-09-15T06:32:03.875761Z 0 [Note] Shutting down plugin 'INNODB_FT_DEFAULT_STOPWORD'
2022-09-15T06:32:03.875763Z 0 [Note] Shutting down plugin 'INNODB_METRICS'
2022-09-15T06:32:03.875764Z 0 [Note] Shutting down plugin 'INNODB_TEMP_TABLE_INFO'
2022-09-15T06:32:03.875766Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_POOL_STATS'
2022-09-15T06:32:03.875767Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE_LRU'
2022-09-15T06:32:03.875769Z 0 [Note] Shutting down plugin 'INNODB_BUFFER_PAGE'
2022-09-15T06:32:03.875770Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX_RESET'
2022-09-15T06:32:03.875772Z 0 [Note] Shutting down plugin 'INNODB_CMP_PER_INDEX'
2022-09-15T06:32:03.875773Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM_RESET'
2022-09-15T06:32:03.875775Z 0 [Note] Shutting down plugin 'INNODB_CMPMEM'
2022-09-15T06:32:03.875777Z 0 [Note] Shutting down plugin 'INNODB_CMP_RESET'
2022-09-15T06:32:03.875778Z 0 [Note] Shutting down plugin 'INNODB_CMP'
2022-09-15T06:32:03.875780Z 0 [Note] Shutting down plugin 'INNODB_LOCK_WAITS'
2022-09-15T06:32:03.875781Z 0 [Note] Shutting down plugin 'INNODB_LOCKS'
2022-09-15T06:32:03.875782Z 0 [Note] Shutting down plugin 'INNODB_TRX'
2022-09-15T06:32:03.875784Z 0 [Note] Shutting down plugin 'InnoDB'
2022-09-15T06:32:03.875854Z 0 [Note] InnoDB: FTS optimize thread exiting.
2022-09-15T06:32:03.876196Z 0 [Note] InnoDB: Starting shutdown...
2022-09-15T06:32:03.976840Z 0 [Note] InnoDB: Dumping buffer pool(s) to /usr/local/mysql/data/ib_buffer_pool
2022-09-15T06:32:03.977146Z 0 [Note] InnoDB: Buffer pool(s) dump completed at 220915 14:32:03
2022-09-15T06:32:05.488923Z 0 [Note] InnoDB: Shutdown completed; log sequence number 2980998
2022-09-15T06:32:05.490187Z 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2022-09-15T06:32:05.490231Z 0 [Note] Shutting down plugin 'MEMORY'
2022-09-15T06:32:05.490243Z 0 [Note] Shutting down plugin 'CSV'
2022-09-15T06:32:05.490246Z 0 [Note] Shutting down plugin 'sha256_password'
2022-09-15T06:32:05.490248Z 0 [Note] Shutting down plugin 'mysql_native_password'
2022-09-15T06:32:05.490337Z 0 [Note] Shutting down plugin 'binlog'
2022-09-15T06:32:05.490478Z 0 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete

?發(fā)現(xiàn)關(guān)鍵字?unknown variable 未知的變量? binlog_expire_logs_seconds

?我照著視頻里面的單詞一個(gè)個(gè)敲，不是我敲錯(cuò)。嘗試尋找度娘

在mysql 8.0版本中新增了binlog_expire_logs_seconds，該參數(shù)表示binlog的失效日期單位秒。
8.0之前的版本，binlog的失效日志用expire_logs_days來配置，單位是天。

參考鏈接：mysql 8 新特性之binlog_expire_logs_seconds - 墨天輪??????

因?yàn)槲沂菍W(xué)習(xí)了8.0和5.7版本的Mysql都有在學(xué)習(xí)，win端使用的是8.0 linux安裝的是5.7

所以是我mysql版本的問題導(dǎo)致。更改參數(shù)?

[mysqld]
user = mysql
port = 3306
basedir = /usr/local/mysql  
# 創(chuàng)建目錄
datadir = /usr/local/mysql/data   
# 數(shù)據(jù)庫目錄
pid-file = /usr/local/mysql/data/mysqld.pid 
# mysql進(jìn)程
log-error = /usr/local/mysql/data/mysql.err   
# 錯(cuò)誤日志
socket = /var/lib/mysql/mysql.sock
# 可以socket文件方式登錄mysql
log-bin = /usr/local/mysql/data/bin-log/mysql-bin.log
server-id = 1
#binlog_expire_logs_seconds = 600
max_binlog_size = 200M
#Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links = 0
#禁止符號(hào)鏈接以防各種安全風(fēng)險(xiǎn)
# Settings user and group are ignored when systemd is used.
# If you need to run mysqld under a different user or group,
# customize your systemd unit file for mariadb according to the
# instructions in http://fedoraproject.org/wiki/Systemd

# [mysqld_safe]

#
# include all files from the config directory
#
!includedir /etc/my.cnf.d
explicit_defaults_for_timestamp=true

再再再再次嘗試啟動(dòng)MySQL?

[root@master lib]# ps -aux | grep mysql
root      53523  0.0  0.0 108096   620 pts/1    S+   14:00   0:00 tail -f /usr/local/mysql/data/mysql.err
root      54867  0.0  0.0  11820  1612 pts/0    S    14:05   0:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/mysqld.pid
mysql     55106  1.1  2.2 1145048 176116 pts/0  Sl   14:05   0:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/usr/local/mysql/data/mysql.err --pid-file=/usr/local/mysql/data/mysqld.pid --socket=/var/lib/mysql/mysql.sock --port=3306
root      55162  0.0  0.0 112816   976 pts/0    S+   14:05   0:00 grep --color=auto mysql
[root@master lib]# netstat -anptu | grep :3306
tcp6       0      0 :::3306                 :::*                    LISTEN      55106/mysqld   

嘗試登錄MySQL 發(fā)現(xiàn)又報(bào)錯(cuò)：錯(cuò)誤2002 (HY000):無法通過套接字'/tmp/ MySQL連接到本地MySQL服務(wù)器

[root@master lib]# mysql -u root -p
Enter password:?
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock #設(shè)置軟連接

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| atguigudb          |
| #mysql50#bin-log   |
| mysql              |
| performance_schema |
| sys                |
| test               |
| test_u             |
+--------------------+
8 rows in set (0.00 sec)

?登錄成功?。?！ 繼續(xù)繼續(xù)MySQL！??！沖文章來源地址http://www.zghlxwxcb.cn/news/detail-815756.html

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