everyone!
I have problem with installing mysql 8.0 server on linux ubuntu server 20.04.2 LTS.
I need to install this type of mysql-server 8.0.23 on linux ubuntu server 20.04.2 LTS!
I have tried:
https://www.youtube.com/watch?v=pQoUvmtq3_U&ab_channel=BeGeek
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2)
https://askubuntu.com/questions/643251/having-trouble-installing-and-removing-mysql-in-ubuntu
https://askubuntu.com/questions/1267636/cant-install-mysql-server-on-ubuntu-20-04-1-due-to-several-errors
MySQL my.cnf file - Found option without preceding group
https://askubuntu.com/questions/797312/either-mysql-wont-start-or-the-client-shows-error-found-option-without-precedi
https://serverfault.com/questions/305053/mysqld-sock-doesnt-exist
https://unix.stackexchange.com/questions/33433/font-encoding-in-terminal
https://linuxhint.com/install_mysql_ubuntu_2004/
and I have tried create file which is missing - that's not helped either way
I have new VDS with pure ubuntu server 20.04.2 LTS, is nothing there.
log: putty
Building dependency tree
Reading state information... Done
mysql-server is already the newest version (8.0.25-0ubuntu0.20.04.1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
Setting up mysql-server-8.0 (8.0.25-0ubuntu0.20.04.1) ...
Renaming removed key_buffer and myisam-recover options (if present)
mysqld will log errors to /var/log/mysql/error.log
2021-07-11T10:29:44.109433Z 0 [ERROR] [MY-011065] [Server] Unable to determine if daemon is running: No such file or directory (rc=0).
2021-07-11T10:29:44.117954Z 0 [ERROR] [MY-010946] [Server] Failed to start mysqld daemon. Check mysqld error log.
Warning: Unable to start the server.
Job for mysql.service failed because a fatal signal was delivered to the control process.
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: signal) since Sun 2021-07-11 13:29:46 MSK; 44ms ago
Process: 10254 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)
Process: 10271 ExecStart=/usr/sbin/mysqld (code=killed, signal=KILL)
Main PID: 10271 (code=killed, signal=KILL)
Status: "Server startup in progress"
Jul 11 13:29:46 vm2107059480 systemd[1]: mysql.service: Main process exited, code=killed, status=9/KILL
Jul 11 13:29:46 vm2107059480 systemd[1]: mysql.service: Failed with result 'signal'.
Jul 11 13:29:46 vm2107059480 systemd[1]: Failed to start MySQL Community Server.
dpkg: error processing package mysql-server-8.0 (--configure):
installed mysql-server-8.0 package post-installation script subprocess returned error exit status 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.
Errors were encountered while processing:
mysql-server-8.0
mysql-server
E: Sub-process /usr/bin/dpkg returned an error code (1)
log: /var/log/mysql/error.log
2021-07-11T10:29:42.768169Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-07-11T10:29:46.023486Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.25-0ubuntu0.20.04.1) starting as process 10271
2021-07-11T10:29:46.151047Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-07-11T10:29:47.681827Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.25-0ubuntu0.20.04.1) starting as process 10290
2021-07-11T10:29:47.776960Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-07-11T10:29:53.765476Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.25-0ubuntu0.20.04.1) starting as process 10356
2021-07-11T10:29:58.511612Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-07-11T10:30:59.292200Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.25-0ubuntu0.20.04.1) starting as process 10386
2021-07-11T10:30:59.758603Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-07-11T10:31:01.640829Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.25-0ubuntu0.20.04.1) starting as process 10421
2021-07-11T10:31:01.695269Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-07-11T10:31:02.905736Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.25-0ubuntu0.20.04.1) starting as process 10443
2021-07-11T10:31:02.948849Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-07-11T10:31:04.145881Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.25-0ubuntu0.20.04.1) starting as process 10465
2021-07-11T10:31:04.183083Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2021-07-11T10:31:05.051672Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.25-0ubuntu0.20.04.1) starting as process 10487
2021-07-11T10:31:05.087005Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
I'm trying figure this out several days. Is someone know what I doing wrong?
Google doesn't helped me.
It works for me:
start swap.
dd if=/dev/zero of=/swapfile bs=1M count=1024
mkswap /swapfile
swapon /swapfile
docker start mysql
Related
I am learning Web Development and am trying to set up a MySql Database for a Spring Boot Application. I am not able to make the MySql Database.
I downloaded mysql using:
sudo dnf install mysql-community-server
Then I got the following errors:
$ mysql
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111)
$ mysql --version
mysql Ver 8.0.31 for Linux on x86_64 (MySQL Community Server - GPL)
$ sudo service mysql start
Redirecting to /bin/systemctl start mysql.service
Failed to start mysql.service: Unit mysql.service not found.
$ sudo systemctl start mysqld
Job for mysqld.service failed because the control process exited with error code.
See "systemctl status mysqld.service" and "journalctl -xeu mysqld.service" for details.
$ systemctl status mysqld.service
× mysqld.service - MySQL Server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; preset: disabled)
Active: failed (Result: exit-code) since Wed 2022-11-30 06:22:00 IST; 4s ago
Docs: man:mysqld(8)
http://dev.mysql.com/doc/refman/en/using-systemd.html
Process: 3783 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
Process: 3818 ExecStart=/usr/sbin/mysqld $MYSQLD_OPTS (code=exited, status=1/FAILURE)
Main PID: 3818 (code=exited, status=1/FAILURE)
Status: "Server shutdown complete"
Error: 22 (Invalid argument)
CPU: 1.043s
Nov 30 06:21:59 fedora systemd[1]: Starting mysqld.service - MySQL Server...
Nov 30 06:22:00 fedora systemd[1]: mysqld.service: Main process exited, code=exited, status=1/FAILURE
Nov 30 06:22:00 fedora systemd[1]: mysqld.service: Failed with result 'exit-code'.
Nov 30 06:22:00 fedora systemd[1]: Failed to start mysqld.service - MySQL Server.
Nov 30 06:22:00 fedora systemd[1]: mysqld.service: Consumed 1.043s CPU time.
I don't have much experience with mysql so I could not do much to fix the error. This [https://stackoverflow.com/questions/11657829/error-2002-hy000-cant-connect-to-local-mysql-server-through-socket-var-run] did not solve the issue. Reinstalling mysql (several times) and restarting my laptop also didn't help.
$ cat /etc/my.cnf
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/8.0/en/server-configuration-defaults.html
[mysqld]
#
# Remove leading # and set to the amount of RAM for the most important data
# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.
# innodb_buffer_pool_size = 128M
#
# Remove the leading "# " to disable binary logging
# Binary logging captures changes between backups and is enabled by
# default. It's default setting is log_bin=binlog
# disable_log_bin
#
# Remove leading # to set options mainly useful for reporting servers.
# The server defaults are faster for transactions and fast SELECTs.
# Adjust sizes as needed, experiment to find the optimal values.
# join_buffer_size = 128M
# sort_buffer_size = 2M
# read_rnd_buffer_size = 2M
#
# Remove leading # to revert to previous value for default_authentication_plugin,
# this will increase compatibility with older clients. For background, see:
# https://dev.mysql.com/doc/refman/8.0/en/server-system-variables.html#sysvar_default_authentication_plugin
# default-authentication-plugin=mysql_native_password
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mysqld.log
pid-file=/run/mysqld/mysqld.pid
$ cat /etc/mysql/my.cnf
cat: /etc/mysql/my.cnf: No such file or directory
$ cat /var/lib/mysql/my.cnf
cat: /var/lib/mysql/my.cnf: No such file or directory
EDIT:
$ journalctl -xeu mysqld.service
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░
░░ An ExecStart= process belonging to unit mysqld.service has exited.
░░
░░ The process' exit code is 'exited' and its exit status is 1.
Nov 30 06:22:00 fedora systemd[1]: mysqld.service: Failed with result 'exit-code'.
░░ Subject: Unit failed
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░
░░ The unit mysqld.service has entered the 'failed' state with result 'exit-code'.
Nov 30 06:22:00 fedora systemd[1]: Failed to start mysqld.service - MySQL Server.
░░ Subject: A start job for unit mysqld.service has failed
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░
░░ A start job for unit mysqld.service has finished with a failure.
░░
░░ The job identifier is 3531 and the job result is failed.
Nov 30 06:22:00 fedora systemd[1]: mysqld.service: Consumed 1.043s CPU time.
░░ Subject: Resources consumed by unit runtime
░░ Defined-By: systemd
░░ Support: https://lists.freedesktop.org/mailman/listinfo/systemd-devel
░░
░░ The unit mysqld.service completed and consumed the indicated resources.
Edit: Logs # /var/log/mysql*.log
2022-11-30T00:44:42.089067Z 0 [System] [MY-013169] [Server] /usr/sbin/mysqld (mysqld 8.0.31) initializing of server in progress as process 1064
2022-11-30T00:44:42.091892Z 0 [ERROR] [MY-010457] [Server] --initialize specified but the data directory has files in it. Aborting.
2022-11-30T00:44:42.091960Z 0 [ERROR] [MY-013236] [Server] The designated data directory /var/lib/mysql/ is unusable. You can remove all files that the server added to it.
2022-11-30T00:44:42.092006Z 0 [ERROR] [MY-010119] [Server] Aborting
2022-11-30T00:44:42.092083Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.31) MySQL Community Server - GPL.
2022-11-30T00:44:42.331797Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.31) starting as process 1069
2022-11-30T00:44:42.339299Z 0 [Warning] [MY-010075] [Server] No existing UUID has been found, so we assume that this is the first time that this server has been started. Generating a new UUID: 2d9a3bde-7048-11ed-a7cd-f406413544b8.
2022-11-30T00:44:42.342844Z 1 [ERROR] [MY-011011] [Server] Failed to find valid data directory.
2022-11-30T00:44:42.342942Z 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
2022-11-30T00:44:42.342960Z 0 [ERROR] [MY-010119] [Server] Aborting
2022-11-30T00:44:42.343234Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.31) MySQL Community Server - GPL.
2022-11-30T00:49:37.543811Z 0 [System] [MY-013169] [Server] /usr/sbin/mysqld (mysqld 8.0.31) initializing of server in progress as process 3714
2022-11-30T00:49:37.544916Z 0 [ERROR] [MY-010457] [Server] --initialize specified but the data directory has files in it. Aborting.
2022-11-30T00:49:37.544934Z 0 [ERROR] [MY-013236] [Server] The designated data directory /var/lib/mysql/ is unusable. You can remove all files that the server added to it.
2022-11-30T00:49:37.545003Z 0 [ERROR] [MY-010119] [Server] Aborting
2022-11-30T00:49:37.545083Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.31) MySQL Community Server - GPL.
2022-11-30T00:49:37.768975Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.31) starting as process 3719
2022-11-30T00:49:37.773567Z 1 [ERROR] [MY-011011] [Server] Failed to find valid data directory.
2022-11-30T00:49:37.773672Z 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
2022-11-30T00:49:37.773705Z 0 [ERROR] [MY-010119] [Server] Aborting
2022-11-30T00:49:37.774047Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.31) MySQL Community Server - GPL.
2022-11-30T00:52:00.113630Z 0 [System] [MY-013169] [Server] /usr/sbin/mysqld (mysqld 8.0.31) initializing of server in progress as process 3813
2022-11-30T00:52:00.114677Z 0 [ERROR] [MY-010457] [Server] --initialize specified but the data directory has files in it. Aborting.
2022-11-30T00:52:00.114695Z 0 [ERROR] [MY-013236] [Server] The designated data directory /var/lib/mysql/ is unusable. You can remove all files that the server added to it.
2022-11-30T00:52:00.114738Z 0 [ERROR] [MY-010119] [Server] Aborting
2022-11-30T00:52:00.114840Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.31) MySQL Community Server - GPL.
2022-11-30T00:52:00.358242Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.31) starting as process 3818
2022-11-30T00:52:00.362438Z 1 [ERROR] [MY-011011] [Server] Failed to find valid data directory.
2022-11-30T00:52:00.362537Z 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
2022-11-30T00:52:00.362566Z 0 [ERROR] [MY-010119] [Server] Aborting
2022-11-30T00:52:00.362844Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.31) MySQL Community Server - GPL.
Can someone tell me how to fix this?
So the following should cleanup /var/lib/mysql, and then mysql should be able to reinitialize cleanly upon start. This however WILL delete any existing databases, including users and their permissions:
sudo systemctl stop mysqld
sudo rm -rf /var/lib/mysql/
sudo mkdir -p /var/lib/mysql/
sudo chown -R mysql: /var/lib/mysql/
sudo systemctl start mysqld
Need some help. How can I fixed this issue upon running using docker compose.
2020-08-10T08:24:49.653807Z 0 [System] [MY-013169] [Server] /usr/sbin/mysqld (mysqld 8.0.21) initializing of server in progress as process 44
2020-08-10T08:24:49.664010Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2020-08-10T08:24:52.877117Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2020-08-10T08:24:57.629900Z 6 [Warning] [MY-010453] [Server] root#localhost is created with an empty password ! Please consider switching off the --initialize-insecure option.
2020-08-10T08:25:03.057763Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.21) starting as process 91
2020-08-10T08:25:03.106631Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2020-08-10T08:25:04.594295Z 0 [ERROR] [MY-011065] [Server] Unable to determine if daemon is running: Inappropriate ioctl for device (rc=0).
2020-08-10T08:25:04.594313Z 0 [ERROR] [MY-010946] [Server] Failed to start mysqld daemon. Check mysqld error log.
2020-08-10 08:25:04+00:00 [ERROR] [Entrypoint]: Unable to start server.
We fixed this by increasing the memory limit of 256M that we had configured on the container, to 512M.
my os is Redhat8.
currtenly I install Mysql, version is "mysql Ver 8.0.13 for Linux on x86_64 (Source distribution)"
I use command "sudo yum install mysql, mysql-server"
But i get error when i want to start mysql services. I keep finding soluction, but still I don't know how to solved it.
Can anyone help me to look at it?
#--------------------------------------------------------------------------------------------------------
[yliu#rhlab1 ~]$ sudo systemctl start mysqld
Job for mysqld.service failed because the control process exited with error code.
See "systemctl status mysqld.service" and "journalctl -xe" for details.
# --------------------------------------------------------------------------------------------
[yliu#rhlab1 ~]$ sudo systemctl status mysqld
● mysqld.service - MySQL 8.0 database server
Loaded: loaded (/usr/lib/systemd/system/mysqld.service; disabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Wed 2020-02-19 12:12:15 AST; 15s ago
Process: 13080 ExecStopPost=/usr/libexec/mysql-wait-stop (code=exited, status=0/SUCCESS)
Process: 13052 ExecStart=/usr/libexec/mysqld --basedir=/usr (code=exited, status=1/FAILURE)
Process: 13015 ExecStartPre=/usr/libexec/mysql-prepare-db-dir mysqld.service (code=exited, status=0/SUCCESS)
Process: 12991 ExecStartPre=/usr/libexec/mysql-check-socket (code=exited, status=0/SUCCESS)
Main PID: 13052 (code=exited, status=1/FAILURE)
Status: "SERVER_BOOTING"
Error: 2 (No such file or directory)
Feb 19 12:12:12 systemd[1]: Starting MySQL 8.0 database server...
Feb 19 12:12:15 systemd[1]: mysqld.service: Main process exited, code=exited, status=1/FAILURE
Feb 19 12:12:15 systemd[1]: mysqld.service: Failed with result 'exit-code'.
Feb 19 12:12:15 systemd[1]: Failed to start MySQL 8.0 database server.
# ----------------------------------------------------------------------------------------
[yliu#rhlab1 ~]$ sudo cat /var/log/mysql/mysqld.log | nl | tail -n 10
38 2020-02-19T15:48:25.492390Z 0 [System] [MY-010910] [Server] /usr/libexec/mysqld: Shutdown complete (mysqld 8.0.13) Source distribution.
39 2020-02-19T15:48:25.492468Z 0 [ERROR] [MY-010065] [Server] Failed to shutdown components infrastructure.
40 2020-02-19T16:12:13.332724Z 0 [System] [MY-010116] [Server] /usr/libexec/mysqld (mysqld 8.0.13) starting as process 13052
41 2020-02-19T16:12:13.585641Z 1 [ERROR] [MY-010781] [Server] Found ./mysql/index_stats.frm file in mysql schema. DD will create .ibd file with same name. Please rename table and start upgrade process again.
42 2020-02-19T16:12:13.585666Z 1 [ERROR] [MY-010336] [Server] Found .frm file with same name as one of the Dictionary Tables.
43 2020-02-19T16:12:13.585833Z 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
44 2020-02-19T16:12:13.585871Z 0 [ERROR] [MY-013236] [Server] Newly created data directory /var/lib/mysql/ is unusable. You can safely remove it.
45 2020-02-19T16:12:13.585881Z 0 [ERROR] [MY-010119] [Server] Aborting
46 2020-02-19T16:12:15.000469Z 0 [System] [MY-010910] [Server] /usr/libexec/mysqld: Shutdown complete (mysqld 8.0.13) Source distribution.
47 2020-02-19T16:12:15.000550Z 0 [ERROR] [MY-010065] [Server] Failed to shutdown components infrastructure.
My /etc/my.cnf.d/mysql-server.cnf information is:
[yliu#rhlab1 ~]$ sudo cat /etc/my.cnf.d/mysql-server.cnf
#
# This group are read by MySQL server.
# Use it for options that only the server (but not clients) should see
#
# For advice on how to change settings please see
# http://dev.mysql.com/doc/refman/en/server-configuration-defaults.html
# 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 mysqld according to the
# instructions in http://fedoraproject.org/wiki/Systemd
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mysql/mysqld.log
pid-file=/run/mysqld/mysqld.pid
I solved the problem, hope it will helpful for everyone who meet the same problem.
Base on the log:
41 2020-02-19T16:12:13.585641Z 1 [ERROR] [MY-010781] [Server] Found ./mysql/index_stats.frm file in mysql schema. DD will create .ibd file with same name. Please rename table and start upgrade process again.
42 2020-02-19T16:12:13.585666Z 1 [ERROR] [MY-010336] [Server] Found .frm file with same name as one of the Dictionary Tables.
43 2020-02-19T16:12:13.585833Z 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
44 2020-02-19T16:12:13.585871Z 0 [ERROR] [MY-013236] [Server] Newly created data directory /var/lib/mysql/ is unusable. You can safely remove it.
so we can remove all the files under /var/lib/mysql/
and then make sure the mysql file owner and group are mysql.
(Django) [yliu#rhlab1 ops]$ sudo ls -al /var/lib/ | grep mysql
drwxr-xr-x. 7 mysql mysql 4096 Feb 24 10:16 mysql
and then you can start mysqld again
sudo systemctl start mysqld
I'm getting the following errors after running sudo mysqld_safe --skip-grant-tables on my Ubuntu Desktop (my PC, no a server):
2019-03-11T09:43:13.463024Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.15) MySQL Community Server - GPL.
2019-03-11T09:46:23.705247Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.15) starting as process 3141
2019-03-11T09:46:23.717873Z 1 [ERROR] [MY-012935] [InnoDB] Database upgrade cannot be accomplished in read-only mode.
2019-03-11T09:46:23.717884Z 1 [ERROR] [MY-012930] [InnoDB] Plugin initialization aborted with error Generic error.
2019-03-11T09:46:23.717906Z 1 [ERROR] [MY-011013] [Server] Failed to initialize DD Storage Engine.
2019-03-11T09:46:23.718040Z 0 [ERROR] [MY-010020] [Server] Data Dictionary initialization failed.
2019-03-11T09:46:23.718101Z 0 [ERROR] [MY-010119] [Server] Aborting
2019-03-11T09:46:23.718366Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.15) MySQL Community Server - GPL.
This is how my.cnf looks like:
!includedir /etc/mysql/conf.d/
!includedir /etc/mysql/mysql.conf.d/
[mysqld]
innodb_force_recovery = 6
innodb_buffer_pool_size = 10M
innodb_buffer_pool_size = 10M
innodb_log_file_size = 1000M
I already backed up the /var/lib/mysql directory which contains the important data, but I would like to make a mysql dump as well.
How can I start the mysql server in a minimal way so that I can export the databases?
I installed mysql80-community-release-el7-1.noarch.rpm in my Centos 7 using this link successfully and I was trying to change my datadir using the following link. It worked fine till step 2 but at step 3 when i tried to start mysql using sudo systemctl start mysqld it gave me an error like this :
Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe" for details.
I have tried the following solutions:
First
Second
But none of them seem to work for me. This is what my /var/log/mysqld.log file says :
2018-06-15T09:08:32.294452Z 0 [System] [MY-013169] [Server] /usr/sbin/mysqld (mysqld 8.0.11) initializing of server in progress as process 14593
2018-06-15T09:08:37.698910Z 5 [Note] [MY-010454] [Server] A temporary password is generated for root#localhost: 7Y8An3/,r?ww
2018-06-15T09:08:40.729296Z 0 [System] [MY-013170] [Server] /usr/sbin/mysqld (mysqld 8.0.11) initializing of server has completed
2018-06-15T09:08:43.257796Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.11) starting as process 14695
2018-06-15T09:08:43.896289Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.
2018-06-15T09:08:43.936018Z 0 [System] [MY-010931] [Server] /usr/sbin/mysqld: ready for connections. Version: '8.0.11' socket: '/var/lib/mysql/mysql.sock' port: 3306 MySQL Community Server - GPL.
2018-06-15T09:21:15.039285Z 0 [Warning] [MY-011068] [Server] The syntax 'validate password plugin' is deprecated and will be removed in a future release. Please use validate_password component instead.
2018-06-15T09:21:16.575642Z 0 [System] [MY-010910] [Server] /usr/sbin/mysqld: Shutdown complete (mysqld 8.0.11) MySQL Community Server - GPL
I am new to this.