dns - Why does the mysql % permission not work for all remotes on EC2? -


i had mysql admin issue permissions on % hosts.

  1. ec2_db launched ip 10.55.142.100 , dns ip-10-55-142-100.ec2.internal
  2. ec2_web launched ip 10.55.142.144 , dns ip-10-55-142-144.ec2.internal
  3. ec2_db , ec2_web in same security group access across db port (3306)
  4. ec2_db has mysql db can reached locally , administered db root user.
  5. ec2_db mysql db has remote user 'my_user'@'%' identified password 'password'
  6. a bash call mysql ec2_web fails: mysql -umy_user -p -h ip-10-55-142-100.ec2.internal, host references explicit ip, public dns, etc.

step 6 seems fail because mysql db has wrong user permisions. needed this:

grant privileges on *.* 'my_user'@'ip-10-55-142-144.ec2.internal' identified password 'password'

i think % work remote server, did not find case.

please let me know why cannot use % here.

as stands now, need add host-specific permissions every client in cluster, more overhead (despite improved security)


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