如何解决“ mbind：不允许操作”在mysql错误日志中 [英] How to fix "mbind: Operation not permitted" in mysql error log

问题描述

我的MySQL错误日志存在一个问题，该日志目前主要由 mbind：不允许操作行组成（请参见下文）。为什么会发生这种情况，我该如何解决？

I have a problem with my MySQL error log which currently mostly consists of "mbind: Operation not permitted" lines (see below). Why does it happen and how do I fix it?

这是困扰我的大部分部分。如下所示，并非所有行都是 mbind：不允许操作。我怀疑应该用MySQL查询错误代替该行，但是由于某些原因它们无法写入文件中。

It's the "mostly" part that bothers me. As you can see below, not all lines are "mbind: Operation not permitted". I suspect that MySQL query errors should be instead of that line, but for some reason they can't be written into the file.

MySQL本身是一个Docker容器，其中日志文件通过以下方式进行卷：

MySQL itself is a Docker container where log files are volumed via:

volumes:
- ./mysql/log:/var/log/mysql

有趣的是：

• docker logs mysql_container什么也没显示……


• slow.log，它位于同一卷文件夹中，完全可以，并且其中的日志行很慢，没有无论如何， mbind：不允许操作！


• 与slow.log一样，进入了general.log，在这里也没问题，

有什么想法吗？

2019-04-07T12:56:22.478504Z 0 [Warning] [MY-011070] [Server] 'Disabling symbolic links using --skip-symbolic-links (or equivalent) is the default. Consider not using this option as it' is deprecated and will be removed in a future release.
2019-04-07T12:56:22.478533Z 0 [Warning] [MY-011068] [Server] The syntax 'expire-logs-days' is deprecated and will be removed in a future release. Please use binlog_expire_logs_seconds instead.
2019-04-07T12:56:22.478605Z 0 [System] [MY-010116] [Server] /usr/sbin/mysqld (mysqld 8.0.15) starting as process 1
2019-04-07T12:56:22.480115Z 0 [Warning] [MY-013242] [Server] --character-set-server: 'utf8' is currently an alias for the character set UTF8MB3, but will be an alias for UTF8MB4 in a future release. Please consider using UTF8MB4 in order to be unambiguous.
2019-04-07T12:56:22.480122Z 0 [Warning] [MY-013244] [Server] --collation-server: 'utf8_general_ci' is a collation of the deprecated character set UTF8MB3. Please consider using UTF8MB4 with an appropriate collation instead.
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
[same line goes forever]

PS MySQL启动并运行良好，没有问题。只是这个error.log一直困扰着我，并阻止我看到实际的错误。

P.S. MySQL starts and runs well, no problem with that. It's just this error.log that keeps bothering me and prevents me from seeing actual errors.

推荐答案

添加功能 CAP_SYS_NICE 到您的容器，直到MySQL服务器可以静默地处理错误为止。

Add the capability CAP_SYS_NICE to your container until MySQL server can handle the error itself "silently".

service:
  mysql:
    image: mysql:8.0.15
    # ...
    cap_add:
      - SYS_NICE  # CAP_SYS_NICE

参考文献：

• Docker Seccomp安全配置文件： https://docs.docker.com/engine/security/seccomp/


• Docker资源限制： https://docs.docker.com/config/containers/resource_constraints /

• Docker Seccomp security profiles: https://docs.docker.com/engine/security/seccomp/
• Docker resource constraints: https://docs.docker.com/config/containers/resource_constraints/

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