How to fix “mbind: Operation not permitted” in mysql error log

Question

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?

Answer 1

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

References:

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

Answer 2

Adding the security_opt option in docker-compose.yml helped to solve this problem:

database:
  image: mysql:latest
  container_name: mysql_0
  ports:
    - "3306:3306"
  security_opt:
    - seccomp:unconfined