Mysql 安装错误：数据库文件被锁定。守护进程已经运行？警告：无法启动服务器

Question

首先我删除了之前的MySQL安装

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apt autoremove  mysql-server-8.0\n

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MySQL 已从服务中删除。然后我尝试安装新的MySQL

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apt install mysql-server\n

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这会引发错误：错误：数据库文件已锁定。守护进程已经运行？警告：无法启动服务器。\n安装结束，但我无法启动服务，因为它抛出错误Can\t connect to local MySQL server through socket \'/var/run/mysqld/mysqld.sock\' (2)

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有人可以告诉我这是什么意思吗？如果我从系统中删除它，哪个守护进程正在运行？

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这是来自终端的整个安装日志：

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root@camotestserver:~# apt install mysql-server\nReading package lists... Done\nBuilding dependency tree\nReading state information... Done\nThe following additional packages will be installed:\n  libcgi-fast-perl libcgi-pm-perl libencode-locale-perl libevent-core-2.1-7 libfcgi-perl libhtml-parser-perl libhtml-tagset-perl libhtml-template-perl libhttp-date-perl\n  libhttp-message-perl libio-html-perl liblwp-mediatypes-perl libmecab2 libtimedate-perl liburi-perl mecab-ipadic mecab-ipadic-utf8 mecab-utils mysql-server-8.0 mysql-server-core-8.0\nSuggested packages:\n  libdata-dump-perl libipc-sharedcache-perl libwww-perl mailx tinyca\nThe following NEW packages will be installed:\n  libcgi-fast-perl libcgi-pm-perl libencode-locale-perl libevent-core-2.1-7 libfcgi-perl libhtml-parser-perl libhtml-tagset-perl libhtml-template-perl libhttp-date-perl\n  libhttp-message-perl libio-html-perl liblwp-mediatypes-perl libmecab2 libtimedate-perl liburi-perl mecab-ipadic mecab-ipadic-utf8 mecab-utils mysql-server mysql-server-8.0\n  mysql-server-core-8.0\n0 upgraded, 21 newly installed, 0 to remove and 0 not upgraded.\nNeed to get 0 B/26.1 MB of archives.\nAfter this operation, 182 MB of additional disk space will be used.\nDo you want to continue? [Y/n]\nPreconfiguring packages ...\nSelecting previously unselected package libevent-core-2.1-7:amd64.\n(Reading database ... 100373 files and directories currently installed.)\nPreparing to unpack .../00-libevent-core-2.1-7_2.1.11-stable-1_amd64.deb ...\nUnpacking libevent-core-2.1-7:amd64 (2.1.11-stable-1) ...\nSelecting previously unselected package libmecab2:amd64.\nPreparing to unpack .../01-libmecab2_0.996-10build1_amd64.deb ...\nUnpacking libmecab2:amd64 (0.996-10build1) ...\nSelecting previously unselected package mysql-server-core-8.0.\nPreparing to unpack .../02-mysql-server-core-8.0_8.0.20-0ubuntu0.20.04.1_amd64.deb ...\nUnpacking mysql-server-core-8.0 (8.0.20-0ubuntu0.20.04.1) ...\nSelecting previously unselected package mysql-server-8.0.\nPreparing to unpack .../03-mysql-server-8.0_8.0.20-0ubuntu0.20.04.1_amd64.deb ...\nUnpacking mysql-server-8.0 (8.0.20-0ubuntu0.20.04.1) ...\nSelecting previously unselected package libhtml-tagset-perl.\nPreparing to unpack .../04-libhtml-tagset-perl_3.20-4_all.deb ...\nUnpacking libhtml-tagset-perl (3.20-4) ...\nSelecting previously unselected package liburi-perl.\nPreparing to unpack .../05-liburi-perl_1.76-2_all.deb ...\nUnpacking liburi-perl (1.76-2) ...\nSelecting previously unselected package libhtml-parser-perl.\nPreparing to unpack .../06-libhtml-parser-perl_3.72-5_amd64.deb ...\nUnpacking libhtml-parser-perl (3.72-5) ...\nSelecting previously unselected package libcgi-pm-perl.\nPreparing to unpack .../07-libcgi-pm-perl_4.46-1_all.deb ...\nUnpacking libcgi-pm-perl (4.46-1) ...\nSelecting previously unselected package libfcgi-perl.\nPreparing to unpack .../08-libfcgi-perl_0.79-1_amd64.deb ...\nUnpacking libfcgi-perl (0.79-1) ...\nSelecting previously unselected package libcgi-fast-perl.\nPreparing to unpack .../09-libcgi-fast-perl_1%3a2.15-1_all.deb ...\nUnpacking libcgi-fast-perl (1:2.15-1) ...\nSelecting previously unselected package libencode-locale-perl.\nPreparing to unpack .../10-libencode-locale-perl_1.05-1_all.deb ...\nUnpacking libencode-locale-perl (1.05-1) ...\nSelecting previously unselected package libhtml-template-perl.\nPreparing to unpack .../11-libhtml-template-perl_2.97-1_all.deb ...\nUnpacking libhtml-template-perl (2.97-1) ...\nSelecting previously unselected package libtimedate-perl.\nPreparing to unpack .../12-libtimedate-perl_2.3200-1_all.deb ...\nUnpacking libtimedate-perl (2.3200-1) ...\nSelecting previously unselected package libhttp-date-perl.\nPreparing to unpack .../13-libhttp-date-perl_6.05-1_all.deb ...\nUnpacking libhttp-date-perl (6.05-1) ...\nSelecting previously unselected package libio-html-perl.\nPreparing to unpack .../14-libio-html-perl_1.001-1_all.deb ...\nUnpacking libio-html-perl (1.001-1) ...\nSelecting previously unselected package liblwp-mediatypes-perl.\nPreparing to unpack .../15-liblwp-mediatypes-perl_6.04-1_all.deb ...\nUnpacking liblwp-mediatypes-perl (6.04-1) ...\nSelecting previously unselected package libhttp-message-perl.\nPreparing to unpack .../16-libhttp-message-perl_6.22-1_all.deb ...\nUnpacking libhttp-message-perl (6.22-1) ...\nSelecting previously unselected package mecab-utils.\nPreparing to unpack .../17-mecab-utils_0.996-10build1_amd64.deb ...\nUnpacking mecab-utils (0.996-10build1) ...\nSelecting previously unselected package mecab-ipadic.\nPreparing to unpack .../18-mecab-ipadic_2.7.0-20070801+main-2.1_all.deb ...\nUnpacking mecab-ipadic (2.7.0-20070801+main-2.1) ...\nSelecting previously unselected package mecab-ipadic-utf8.\nPreparing to unpack .../19-mecab-ipadic-utf8_2.7.0-20070801+main-2.1_all.deb ...\nUnpacking mecab-ipadic-utf8 (2.7.0-20070801+main-2.1) ...\nSelecting previously unselected package mysql-server.\nPreparing to unpack .../20-mysql-server_8.0.20-0ubuntu0.20.04.1_all.deb ...\nUnpacking mysql-server (8.0.20-0ubuntu0.20.04.1) ...\nSetting up libmecab2:amd64 (0.996-10build1) ...\nSetting up libhtml-tagset-perl (3.20-4) ...\nSetting up liblwp-mediatypes-perl (6.04-1) ...\nSetting up libencode-locale-perl (1.05-1) ...\nSetting up mecab-utils (0.996-10build1) ...\nSetting up libevent-core-2.1-7:amd64 (2.1.11-stable-1) ...\nSetting up libio-html-perl (1.001-1) ...\nSetting up mysql-server-core-8.0 (8.0.20-0ubuntu0.20.04.1) ...\nSetting up libtimedate-perl (2.3200-1) ...\nSetting up libfcgi-perl (0.79-1) ...\nSetting up liburi-perl (1.76-2) ...\nSetting up mysql-server-8.0 (8.0.20-0ubuntu0.20.04.1) ...\nupdate-alternatives: using /etc/mysql/mysql.cnf to provide /etc/mysql/my.cnf (my.cnf) in auto mode\nRenaming removed key_buffer and myisam-recover options (if present)\n/var/lib/mysql/ibdata1: 44899\nERROR: Database files are locked. Daemon already running?\nWarning: Unable to start the server.\n\nJob for mysql.service failed because the control process exited with error code.\nSee "systemctl status mysql.service" and "journalctl -xe" for details.\ninvoke-rc.d: initscript mysql, action "start" failed.\n\xe2\x97\x8f mysql.service - MySQL Community Server\n     Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)\n     Active: activating (auto-restart) (Result: exit-code) since Thu 2020-05-21 16:39:31 CEST; 9ms ago\n    Process: 48199 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)\n    Process: 48224 ExecStart=/usr/sbin/mysqld (code=exited, status=1/FAILURE)\n   Main PID: 48224 (code=exited, status=1/FAILURE)\n     Status: "Server startup in progress"\ndpkg: error processing package mysql-server-8.0 (--configure):\n installed mysql-server-8.0 package post-installation script subprocess returned error exit status 1\nSetting up libhttp-date-perl (6.05-1) ...\nSetting up mecab-ipadic (2.7.0-20070801+main-2.1) ...\nCompiling IPA dictionary for Mecab.  This takes long time...\nreading /usr/share/mecab/dic/ipadic/unk.def ... 40\nemitting double-array: 100% |###########################################|\n/usr/share/mecab/dic/ipadic/model.def is not found. skipped.\nreading /usr/share/mecab/dic/ipadic/Suffix.csv ... 1393\nreading /usr/share/mecab/dic/ipadic/Noun.proper.csv ... 27328\nreading /usr/share/mecab/dic/ipadic/Noun.verbal.csv ... 12146\nreading /usr/share/mecab/dic/ipadic/Noun.adverbal.csv ... 795\nreading /usr/share/mecab/dic/ipadic/Noun.csv ... 60477\nreading /usr/share/mecab/dic/ipadic/Others.csv ... 2\nreading /usr/share/mecab/dic/ipadic/Adnominal.csv ... 135\nreading /usr/share/mecab/dic/ipadic/Noun.nai.csv ... 42\nreading /usr/share/mecab/dic/ipadic/Prefix.csv ... 221\nreading /usr/share/mecab/dic/ipadic/Conjunction.csv ... 171\nreading /usr/share/mecab/dic/ipadic/Interjection.csv ... 252\nreading /usr/share/mecab/dic/ipadic/Postp.csv ... 146\nreading /usr/share/mecab/dic/ipadic/Postp-col.csv ... 91\nreading /usr/share/mecab/dic/ipadic/Verb.csv ... 130750\nreading /usr/share/mecab/dic/ipadic/Filler.csv ... 19\nreading /usr/share/mecab/dic/ipadic/Noun.name.csv ... 34202\nreading /usr/share/mecab/dic/ipadic/Auxil.csv ... 199\nreading /usr/share/mecab/dic/ipadic/Noun.place.csv ... 72999\nreading /usr/share/mecab/dic/ipadic/Adverb.csv ... 3032\nreading /usr/share/mecab/dic/ipadic/Noun.demonst.csv ... 120\nreading /usr/share/mecab/dic/ipadic/Noun.others.csv ... 151\nreading /usr/share/mecab/dic/ipadic/Noun.adjv.csv ... 3328\nreading /usr/share/mecab/dic/ipadic/Noun.number.csv ... 42\nreading /usr/share/mecab/dic/ipadic/Symbol.csv ... 208\nreading /usr/share/mecab/dic/ipadic/Adj.csv ... 27210\nreading /usr/share/mecab/dic/ipadic/Noun.org.csv ... 16668\nemitting double-array: 100% |###########################################|\nreading /usr/share/mecab/dic/ipadic/matrix.def ... 1316x1316\nemitting matrix      : 100% |###########################################|\n\ndone!\nupdate-alternatives: using /var/lib/mecab/dic/ipadic to provide /var/lib/mecab/dic/debian (mecab-dictionary) in auto mode\nSetting up mecab-ipadic-utf8 (2.7.0-20070801+main-2.1) ...\nCompiling IPA dictionary for Mecab.  This takes long time...\nreading /usr/share/mecab/dic/ipadic/unk.def ... 40\nemitting double-array: 100% |###########################################|\n/usr/share/mecab/dic/ipadic/model.def is not found. skipped.\nreading /usr/share/mecab/dic/ipadic/Suffix.csv ... 1393\nreading /usr/share/mecab/dic/ipadic/Noun.proper.csv ... 27328\nreading /usr/share/mecab/dic/ipadic/Noun.verbal.csv ... 12146\nreading /usr/share/mecab/dic/ipadic/Noun.adverbal.csv ... 795\nreading /usr/share/mecab/dic/ipadic/Noun.csv ... 60477\nreading /usr/share/mecab/dic/ipadic/Others.csv ... 2\nreading /usr/share/mecab/dic/ipadic/Adnominal.csv ... 135\nreading /usr/share/mecab/dic/ipadic/Noun.nai.csv ... 42\nreading /usr/share/mecab/dic/ipadic/Prefix.csv ... 221\nreading /usr/share/mecab/dic/ipadic/Conjunction.csv ... 171\nreading /usr/share/mecab/dic/ipadic/Interjection.csv ... 252\nreading /usr/share/mecab/dic/ipadic/Postp.csv ... 146\nreading /usr/share/mecab/dic/ipadic/Postp-col.csv ... 91\nreading /usr/share/mecab/dic/ipadic/Verb.csv ... 130750\nreading /usr/share/mecab/dic/ipadic/Filler.csv ... 19\nreading /usr/share/mecab/dic/ipadic/Noun.name.csv ... 34202\nreading /usr/share/mecab/dic/ipadic/Auxil.csv ... 199\nreading /usr/share/mecab/dic/ipadic/Noun.place.csv ... 72999\nreading /usr/share/mecab/dic/ipadic/Adverb.csv ... 3032\nreading /usr/share/mecab/dic/ipadic/Noun.demonst.csv ... 120\nreading /usr/share/mecab/dic/ipadic/Noun.others.csv ... 151\nreading /usr/share/mecab/dic/ipadic/Noun.adjv.csv ... 3328\nreading /usr/share/mecab/dic/ipadic/Noun.number.csv ... 42\nreading /usr/share/mecab/dic/ipadic/Symbol.csv ... 208\nreading /usr/share/mecab/dic/ipadic/Adj.csv ... 27210\nreading /usr/share/mecab/dic/ipadic/Noun.org.csv ... 16668\nemitting double-array: 100% |###########################################|\nreading /usr/share/mecab/dic/ipadic/matrix.def ... 1316x1316\nemitting matrix      : 100% |###########################################|\n\ndone!\nupdate-alternatives: using /var/lib/mecab/dic/ipadic-utf8 to provide /var/lib/mecab/dic/debian (mecab-dictionary) in auto mode\nSetting up libhtml-parser-perl (3.72-5) ...\nSetting up libhttp-message-perl (6.22-1) ...\ndpkg: dependency problems prevent configuration of mysql-server:\n mysql-server depends on mysql-server-8.0; however:\n  Package mysql-server-8.0 is not configured yet.\n\ndpkg: error processing package mysql-server (--configure):\n dependency problems - leaving unconfigured\nNo apport report written because the error message indicates its a followup error from a previous failure.\n                                                                                                          Setting up libcgi-pm-perl (4.46-1) ...\nSetting up libhtml-template-perl (2.97-1) ...\nSetting up libcgi-fast-perl (1:2.15-1) ...\nProcessing triggers for systemd (245.4-4ubuntu3) ...\nProcessing triggers for man-db (2.9.1-1) ...\nProcessing triggers for libc-bin (2.31-0ubuntu9) ...\nErrors were encountered while processing:\n mysql-server-8.0\n mysql-server\nE: Sub-process /usr/bin/dpkg returned an error code (1)\nW: Operation was interrupted before it could finish\n

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Answer 1

我的解决方案是这三个命令：

sudo apt-get clean
sudo apt-get update
sudo apt-get upgrade -f

Answer 2

我遇到了这个问题，在尝试上述操作后，安装卡在 mysqld is running as PID 2802 处。

我在另一个终端上杀死了 MySQL 进程

pkill mysql

Answer 3

sudo service mysqld status对此有什么好说的呢？无论如何，sudo service mysqld stop可能足以达到目的。