首先我删除了之前安装的 MySQL
apt autoremove mysql-server-8.0
MySQL 已从服务中删除。然后我尝试安装新的 MySQL
apt install mysql-server
这会引发一个错误：错误：数据库文件已锁定。守护程序已运行？警告：无法启动服务器。 安装已结束，但我无法启动服务，因为它会抛出错误无法通过套接字“/var/run/mysqld/mysqld.sock”连接到本地 MySQL 服务器 (2)
有人能告诉我这是什么意思吗？如果我从系统中删除了它，那么正在运行哪个守护进程？
以下是终端的整个安装日志：
root@camotestserver:~# apt install mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
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
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
Suggested packages:
libdata-dump-perl libipc-sharedcache-perl libwww-perl mailx tinyca
The following NEW packages will be installed:
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
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
mysql-server-core-8.0
0 upgraded, 21 newly installed, 0 to remove and 0 not upgraded.
Need to get 0 B/26.1 MB of archives.
After this operation, 182 MB of additional disk space will be used.
Do you want to continue? [Y/n]
Preconfiguring packages ...
Selecting previously unselected package libevent-core-2.1-7:amd64.
(Reading database ... 100373 files and directories currently installed.)
Preparing to unpack .../00-libevent-core-2.1-7_2.1.11-stable-1_amd64.deb ...
Unpacking libevent-core-2.1-7:amd64 (2.1.11-stable-1) ...
Selecting previously unselected package libmecab2:amd64.
Preparing to unpack .../01-libmecab2_0.996-10build1_amd64.deb ...
Unpacking libmecab2:amd64 (0.996-10build1) ...
Selecting previously unselected package mysql-server-core-8.0.
Preparing to unpack .../02-mysql-server-core-8.0_8.0.20-0ubuntu0.20.04.1_amd64.deb ...
Unpacking mysql-server-core-8.0 (8.0.20-0ubuntu0.20.04.1) ...
Selecting previously unselected package mysql-server-8.0.
Preparing to unpack .../03-mysql-server-8.0_8.0.20-0ubuntu0.20.04.1_amd64.deb ...
Unpacking mysql-server-8.0 (8.0.20-0ubuntu0.20.04.1) ...
Selecting previously unselected package libhtml-tagset-perl.
Preparing to unpack .../04-libhtml-tagset-perl_3.20-4_all.deb ...
Unpacking libhtml-tagset-perl (3.20-4) ...
Selecting previously unselected package liburi-perl.
Preparing to unpack .../05-liburi-perl_1.76-2_all.deb ...
Unpacking liburi-perl (1.76-2) ...
Selecting previously unselected package libhtml-parser-perl.
Preparing to unpack .../06-libhtml-parser-perl_3.72-5_amd64.deb ...
Unpacking libhtml-parser-perl (3.72-5) ...
Selecting previously unselected package libcgi-pm-perl.
Preparing to unpack .../07-libcgi-pm-perl_4.46-1_all.deb ...
Unpacking libcgi-pm-perl (4.46-1) ...
Selecting previously unselected package libfcgi-perl.
Preparing to unpack .../08-libfcgi-perl_0.79-1_amd64.deb ...
Unpacking libfcgi-perl (0.79-1) ...
Selecting previously unselected package libcgi-fast-perl.
Preparing to unpack .../09-libcgi-fast-perl_1%3a2.15-1_all.deb ...
Unpacking libcgi-fast-perl (1:2.15-1) ...
Selecting previously unselected package libencode-locale-perl.
Preparing to unpack .../10-libencode-locale-perl_1.05-1_all.deb ...
Unpacking libencode-locale-perl (1.05-1) ...
Selecting previously unselected package libhtml-template-perl.
Preparing to unpack .../11-libhtml-template-perl_2.97-1_all.deb ...
Unpacking libhtml-template-perl (2.97-1) ...
Selecting previously unselected package libtimedate-perl.
Preparing to unpack .../12-libtimedate-perl_2.3200-1_all.deb ...
Unpacking libtimedate-perl (2.3200-1) ...
Selecting previously unselected package libhttp-date-perl.
Preparing to unpack .../13-libhttp-date-perl_6.05-1_all.deb ...
Unpacking libhttp-date-perl (6.05-1) ...
Selecting previously unselected package libio-html-perl.
Preparing to unpack .../14-libio-html-perl_1.001-1_all.deb ...
Unpacking libio-html-perl (1.001-1) ...
Selecting previously unselected package liblwp-mediatypes-perl.
Preparing to unpack .../15-liblwp-mediatypes-perl_6.04-1_all.deb ...
Unpacking liblwp-mediatypes-perl (6.04-1) ...
Selecting previously unselected package libhttp-message-perl.
Preparing to unpack .../16-libhttp-message-perl_6.22-1_all.deb ...
Unpacking libhttp-message-perl (6.22-1) ...
Selecting previously unselected package mecab-utils.
Preparing to unpack .../17-mecab-utils_0.996-10build1_amd64.deb ...
Unpacking mecab-utils (0.996-10build1) ...
Selecting previously unselected package mecab-ipadic.
Preparing to unpack .../18-mecab-ipadic_2.7.0-20070801+main-2.1_all.deb ...
Unpacking mecab-ipadic (2.7.0-20070801+main-2.1) ...
Selecting previously unselected package mecab-ipadic-utf8.
Preparing to unpack .../19-mecab-ipadic-utf8_2.7.0-20070801+main-2.1_all.deb ...
Unpacking mecab-ipadic-utf8 (2.7.0-20070801+main-2.1) ...
Selecting previously unselected package mysql-server.
Preparing to unpack .../20-mysql-server_8.0.20-0ubuntu0.20.04.1_all.deb ...
Unpacking mysql-server (8.0.20-0ubuntu0.20.04.1) ...
Setting up libmecab2:amd64 (0.996-10build1) ...
Setting up libhtml-tagset-perl (3.20-4) ...
Setting up liblwp-mediatypes-perl (6.04-1) ...
Setting up libencode-locale-perl (1.05-1) ...
Setting up mecab-utils (0.996-10build1) ...
Setting up libevent-core-2.1-7:amd64 (2.1.11-stable-1) ...
Setting up libio-html-perl (1.001-1) ...
Setting up mysql-server-core-8.0 (8.0.20-0ubuntu0.20.04.1) ...
Setting up libtimedate-perl (2.3200-1) ...
Setting up libfcgi-perl (0.79-1) ...
Setting up liburi-perl (1.76-2) ...
Setting up mysql-server-8.0 (8.0.20-0ubuntu0.20.04.1) ...
update-alternatives: using /etc/mysql/mysql.cnf to provide /etc/mysql/my.cnf (my.cnf) in auto mode
Renaming removed key_buffer and myisam-recover options (if present)
/var/lib/mysql/ibdata1: 44899
ERROR: Database files are locked. Daemon already running?
Warning: Unable to start the server.
Job for mysql.service failed because the control process exited with error code.
See "systemctl status mysql.service" and "journalctl -xe" for details.
invoke-rc.d: initscript mysql, action "start" failed.
● mysql.service - MySQL Community Server
Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Thu 2020-05-21 16:39:31 CEST; 9ms ago
Process: 48199 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Process: 48224 ExecStart=/usr/sbin/mysqld (code=exited, status=1/FAILURE)
Main PID: 48224 (code=exited, status=1/FAILURE)
Status: "Server startup in progress"
dpkg: error processing package mysql-server-8.0 (--configure):
installed mysql-server-8.0 package post-installation script subprocess returned error exit status 1
Setting up libhttp-date-perl (6.05-1) ...
Setting up mecab-ipadic (2.7.0-20070801+main-2.1) ...
Compiling IPA dictionary for Mecab. This takes long time...
reading /usr/share/mecab/dic/ipadic/unk.def ... 40
emitting double-array: 100% |###########################################|
/usr/share/mecab/dic/ipadic/model.def is not found. skipped.
reading /usr/share/mecab/dic/ipadic/Suffix.csv ... 1393
reading /usr/share/mecab/dic/ipadic/Noun.proper.csv ... 27328
reading /usr/share/mecab/dic/ipadic/Noun.verbal.csv ... 12146
reading /usr/share/mecab/dic/ipadic/Noun.adverbal.csv ... 795
reading /usr/share/mecab/dic/ipadic/Noun.csv ... 60477
reading /usr/share/mecab/dic/ipadic/Others.csv ... 2
reading /usr/share/mecab/dic/ipadic/Adnominal.csv ... 135
reading /usr/share/mecab/dic/ipadic/Noun.nai.csv ... 42
reading /usr/share/mecab/dic/ipadic/Prefix.csv ... 221
reading /usr/share/mecab/dic/ipadic/Conjunction.csv ... 171
reading /usr/share/mecab/dic/ipadic/Interjection.csv ... 252
reading /usr/share/mecab/dic/ipadic/Postp.csv ... 146
reading /usr/share/mecab/dic/ipadic/Postp-col.csv ... 91
reading /usr/share/mecab/dic/ipadic/Verb.csv ... 130750
reading /usr/share/mecab/dic/ipadic/Filler.csv ... 19
reading /usr/share/mecab/dic/ipadic/Noun.name.csv ... 34202
reading /usr/share/mecab/dic/ipadic/Auxil.csv ... 199
reading /usr/share/mecab/dic/ipadic/Noun.place.csv ... 72999
reading /usr/share/mecab/dic/ipadic/Adverb.csv ... 3032
reading /usr/share/mecab/dic/ipadic/Noun.demonst.csv ... 120
reading /usr/share/mecab/dic/ipadic/Noun.others.csv ... 151
reading /usr/share/mecab/dic/ipadic/Noun.adjv.csv ... 3328
reading /usr/share/mecab/dic/ipadic/Noun.number.csv ... 42
reading /usr/share/mecab/dic/ipadic/Symbol.csv ... 208
reading /usr/share/mecab/dic/ipadic/Adj.csv ... 27210
reading /usr/share/mecab/dic/ipadic/Noun.org.csv ... 16668
emitting double-array: 100% |###########################################|
reading /usr/share/mecab/dic/ipadic/matrix.def ... 1316x1316
emitting matrix : 100% |###########################################|
done!
update-alternatives: using /var/lib/mecab/dic/ipadic to provide /var/lib/mecab/dic/debian (mecab-dictionary) in auto mode
Setting up mecab-ipadic-utf8 (2.7.0-20070801+main-2.1) ...
Compiling IPA dictionary for Mecab. This takes long time...
reading /usr/share/mecab/dic/ipadic/unk.def ... 40
emitting double-array: 100% |###########################################|
/usr/share/mecab/dic/ipadic/model.def is not found. skipped.
reading /usr/share/mecab/dic/ipadic/Suffix.csv ... 1393
reading /usr/share/mecab/dic/ipadic/Noun.proper.csv ... 27328
reading /usr/share/mecab/dic/ipadic/Noun.verbal.csv ... 12146
reading /usr/share/mecab/dic/ipadic/Noun.adverbal.csv ... 795
reading /usr/share/mecab/dic/ipadic/Noun.csv ... 60477
reading /usr/share/mecab/dic/ipadic/Others.csv ... 2
reading /usr/share/mecab/dic/ipadic/Adnominal.csv ... 135
reading /usr/share/mecab/dic/ipadic/Noun.nai.csv ... 42
reading /usr/share/mecab/dic/ipadic/Prefix.csv ... 221
reading /usr/share/mecab/dic/ipadic/Conjunction.csv ... 171
reading /usr/share/mecab/dic/ipadic/Interjection.csv ... 252
reading /usr/share/mecab/dic/ipadic/Postp.csv ... 146
reading /usr/share/mecab/dic/ipadic/Postp-col.csv ... 91
reading /usr/share/mecab/dic/ipadic/Verb.csv ... 130750
reading /usr/share/mecab/dic/ipadic/Filler.csv ... 19
reading /usr/share/mecab/dic/ipadic/Noun.name.csv ... 34202
reading /usr/share/mecab/dic/ipadic/Auxil.csv ... 199
reading /usr/share/mecab/dic/ipadic/Noun.place.csv ... 72999
reading /usr/share/mecab/dic/ipadic/Adverb.csv ... 3032
reading /usr/share/mecab/dic/ipadic/Noun.demonst.csv ... 120
reading /usr/share/mecab/dic/ipadic/Noun.others.csv ... 151
reading /usr/share/mecab/dic/ipadic/Noun.adjv.csv ... 3328
reading /usr/share/mecab/dic/ipadic/Noun.number.csv ... 42
reading /usr/share/mecab/dic/ipadic/Symbol.csv ... 208
reading /usr/share/mecab/dic/ipadic/Adj.csv ... 27210
reading /usr/share/mecab/dic/ipadic/Noun.org.csv ... 16668
emitting double-array: 100% |###########################################|
reading /usr/share/mecab/dic/ipadic/matrix.def ... 1316x1316
emitting matrix : 100% |###########################################|
done!
update-alternatives: using /var/lib/mecab/dic/ipadic-utf8 to provide /var/lib/mecab/dic/debian (mecab-dictionary) in auto mode
Setting up libhtml-parser-perl (3.72-5) ...
Setting up libhttp-message-perl (6.22-1) ...
dpkg: dependency problems prevent configuration of mysql-server:
mysql-server depends on mysql-server-8.0; however:
Package mysql-server-8.0 is not configured yet.
dpkg: error processing package mysql-server (--configure):
dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
Setting up libcgi-pm-perl (4.46-1) ...
Setting up libhtml-template-perl (2.97-1) ...
Setting up libcgi-fast-perl (1:2.15-1) ...
Processing triggers for systemd (245.4-4ubuntu3) ...
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for libc-bin (2.31-0ubuntu9) ...
Errors were encountered while processing:
mysql-server-8.0
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)
W: Operation was interrupted before it could finish
答案1
对我来说解决方案是以下三个命令：
sudo apt-get clean
sudo apt-get update
sudo apt-get upgrade -f
答案2
我遇到了这个问题，尝试上述操作后，安装仍然卡在 mysqld 作为 PID 2802 运行。
我在另一个终端上终止了 MySQL 进程
pkill mysql
答案3
对此你有什么sudo service mysqld status要说的吗？无论如何，sudo service mysqld stop可能足以达到目的。