16.04 MySQL无法启动,因为 AppArmor?

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问题

我尝试在Kubuntu 16.04上安装mysql-server-5.7,但麻烦来了。

sudo apt install mysql-server 提供以下输出。


Setting up mysql-server-5.7 (5.7.18-0ubuntu0.16.04.1) ...


Renaming removed key_buffer and myisam-recover options (if present)


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 ons 2017-05-17 09:48:39 CEST; 10ms ago


 Process: 13622 ExecStartPost=/usr/share/mysql/mysql-systemd-start post (code=exited, status=0/SUCCESS)


 Process: 13621 ExecStart=/usr/sbin/mysqld (code=exited, status=2)


 Process: 13612 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=0/SUCCESS)


 Main PID: 13621 (code=exited, status=2)



maj 17 09:48:39 anis systemd[1]: Failed to start MySQL Community Server.


maj 17 09:48:39 anis systemd[1]: mysql.service: Unit entered failed state.


maj 17 09:48:39 anis systemd[1]: mysql.service: Failed with result 'exit-code'.


dpkg: error processing package mysql-server-5.7 (--configure):


 subprocess installed post-installation script returned error exit status 1


dpkg: dependency problems prevent configuration of mysql-server:


 mysql-server depends on mysql-server-5.7; however:


 Package mysql-server-5.7 is not configured yet.



dpkg: error processing package mysql-server (--configure):


 dependency problems - leaving unconfigured


Errors were encountered while processing:


 mysql-server-5.7


 mysql-server


E: Sub-process /usr/bin/dpkg returned an error code (1)



尝试运行journalctl -xe排除故障时,得到如下所示的输出,这表示AppArmor给我带来麻烦。


maj 17 09:53:14 anis systemd[1]: Starting MySQL Community Server...


-- Subject: Unit mysql.service has begun start-up


-- Defined-By: systemd


-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel


-- 


-- Unit mysql.service has begun starting up.


maj 17 09:53:14 anis audit[14767]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/14767/status" pid=14767 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=124 ouid=124


maj 17 09:53:14 anis audit[14767]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=14767 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=124 ouid=0


maj 17 09:53:14 anis kernel: audit: type=1400 audit(1495007594.314:240): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/14767/status" pid=14767 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=124 ouid=124


maj 17 09:53:14 anis kernel: audit: type=1400 audit(1495007594.314:241): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/sys/devices/system/node/" pid=14767 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=124 ouid=0


maj 17 09:53:14 anis kernel: audit: type=1400 audit(1495007594.314:242): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/14767/status" pid=14767 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=124 ouid=124


maj 17 09:53:14 anis audit[14767]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/14767/status" pid=14767 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=124 ouid=124


maj 17 09:53:14 anis audit[14767]: AVC apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/14767/task/14767/mem" pid=14767 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=124 ouid=124


maj 17 09:53:14 anis kernel: audit: type=1400 audit(1495007594.658:243): apparmor="DENIED" operation="open" profile="/usr/sbin/mysqld" name="/proc/14767/task/14767/mem" pid=14767 comm="mysqld" requested_mask="r" denied_mask="r" fsuid=124 ouid=124


maj 17 09:53:14 anis systemd[1]: mysql.service: Main process exited, code=exited, status=2/INVALIDARGUMENT



如何解决这个问题?


答案1

你需要编辑apparmor配置,让MySQL可以访问这些文件,日志消息告诉你/usr/sbin/mysqld需要读取(r )访问以打开/proc/14767/status,要编辑的文件是/etc/apparmor.d/usr.sbin.mysqld

在例子中,我通过添加这些行解决了这个问题:


 /proc/*/status r,


 /sys/devices/system/node/ r,


 /sys/devices/system/node/node0/meminfo r,



注意第二行的尾斜杠。

完成后,尝试启动MySQL,如果你得到更多的错误,添加这些到文件,然后再试一次。


答案2


echo"exit 0" >> /etc/init.d/mysql


dpkg --configure -a



如果它没有帮助,使用:


sudo apt-get purge mysql-server mysql-client mysql-common mysql-server-5.5


sudo apt-get install mysql-server




答案3

我解决了这个问题;

编辑/etc/apparmor.d/local/usr.sbin.mysqld

添加这些行;


/data/ r,


/data/** rwk,



重新加载apparmor服务


#sudo service apparmor reload




答案4

  • 运行sudo apt install mysql-server
  • 检查错误
  • 重新启动
  • 运行sudo apt install mysql-server 再次继续安装

安装完成。


答案5

  • stop mysql-server
  • rm /var/lib/mysql/ib_logfile*
  • restart mysql


STA  apparmor  
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