16.04 – 由于AppArmor,MySQL无法启动？
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我正在尝试在Kubuntu 16.04上安装mysql-server-5.7,但我遇到了麻烦.
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)
当尝试通过运行journalctl -xe进行故障排除时,我得到如下输出,这似乎表明AppArmor给了我麻烦.
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
我怎么能解决这个问题呢？
解决方法:
您需要编辑apparmor配置以让MySQL访问这些文件.日志消息告诉您/usr/sbin / mysqld需要read(r)访问open / proc / 14767 / status,/ sys / devices / system / node /(尾随斜杠,因为它想要读取目录),以及的/ proc / 14767 /任务/ 14767 / MEM.要编辑的文件是/etc/apparmor.d/usr.sbin.mysqld.
在我的情况下,我通过在中间的某处添加这些线来解决问题(每个线前面有两个空格)：
/proc/*/status r,
/sys/devices/system/node/ r,
/sys/devices/system/node/node0/meminfo r,
(注意第二行的尾部斜杠.)
执行此操作后,尝试启动MySQL,如果您收到更多错误,请添加这些文件,然后重试.
Here是我在别处给出这个问题的答案.
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