Skip to main content

MySQL error | Could not open file Permission denied:

Getting Error - Could not open file '/mysql/<db_name>/logs/<db_name>.err' for error logging: Permission denied:

If you are implementing systemctl to start, stop, and check status of mysqld and getting following error, while starting mysqld service, then check whether SeLinux is disabled or not.

mysqld[44278]: 2018-11-06T01:36:48.303642Z 0 [ERROR] [MY-010187] [Server] Could not open file '/mysql/<db_name>/logs/<db_name>.err' for error logging: Permission denied
mysqld[44278]: 2018-11-06T01:36:48.303785Z 0 [ERROR] [MY-010119] [Server] Aborting

Disable SeLinux:

Check whether SeLinux is enforcing or permissive
# getenforce
Enforcing

Edit file /etc/sysconfig/selinux and set SELINUX=permissive as follows and REBOOT server

# cat /etc/sysconfig/selinux
# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#     enforcing - SELinux security policy is enforced.
#     permissive - SELinux prints warnings instead of enforcing.
#     disabled - No SELinux policy is loaded.
#SELINUX=enforcing
SELINUX=permissive
# SELINUXTYPE= can take one of three two values:
#     targeted - Targeted processes are protected,
#     minimum - Modification of targeted policy. Only selected processes are protected.
#     mls - Multi Level Security protection.
SELINUXTYPE=targeted

Execute following command to make sure SeLinux is permissive

#getenforce
Permissive

Explore more at -  

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/security-enhanced_linux/sect-security-enhanced_linux-working_with_selinux-changing_selinux_modes

 https://docs.fedoraproject.org/en-US/Fedora/11/html/Security-Enhanced_Linux/sect-Security-Enhanced_Linux-Working_with_SELinux-Enabling_and_Disabling_SELinux.html

If you like to configure SELINUX  and keep enforcing SELINUX - Explore it at https://blogs.oracle.com/jsmyth/selinux-and-mysql

If you have an access to Oracle - MOS -  Refer: How to set SELinux contexts for MySQL Server (Doc ID 2296123.1) to configure SELinux for MySQL database server.
Labels:

Comments

Post a Comment

Popular posts from this blog

MySQL InnoDB cluster troubleshooting | commands

Cluster Validation: select * from performance_schema.replication_group_members; All members should be online. select instance_name, mysql_server_uuid, addresses from  mysql_innodb_cluster_metadata.instances; All instances should return same value for mysql_server_uuid SELECT @@GTID_EXECUTED; All nodes should return same value Frequently use commands: mysql> SET SQL_LOG_BIN = 0;  mysql> stop group_replication; mysql> set global super_read_only=0; mysql> drop database mysql_innodb_cluster_metadata; mysql> RESET MASTER; mysql> RESET SLAVE ALL; JS > var cluster = dba.getCluster() JS > var cluster = dba.getCluster("<Cluster_name>") JS > var cluster = dba.createCluster('name') JS > cluster.removeInstance('root@<IP_Address>:<Port_No>',{force: true}) JS > cluster.addInstance('root@<IP add>,:<port>') JS > cluster.addInstance('root@ <IP add>,:<port> ') JS > dba.getC...
Post a Comment
Read more

MySQL 5.7 Install | Configure MySQL | Configure MySQL Replication | Configure systemd for single instance

Install MySQL 5.7 Community Edition on Linux: #yum install mysql80-community-release-el7-1.noarch.rpm #yum install mysql-community-server #yum install perl-DBD-MySQL-4.023-6.el7.x86_64.rpm #yum install percona-release-0.1-4.noarch.rpm Increase no. of open files: Edit file /etc/security/limits.conf and includes as follows, which will increase no of open files for mysql user to 65535 from 1024 which is default. excute ulimit -a after sudo to mysql, if you are logged in exit and login again then and then only you will be able to see it. mysql              soft     nofile           65535 mysql             hard     nofile           65535 Ref.: https://dev.mysql.com/doc/refman/8.0/en/linux-installation-yum-repo.html https://jinyuwang.weebly.co...
1 comment
Read more

Create MySQL database with hyphen

Create MySQL database with hyphen: If you are trying to create MySQL database with hyphen " - " in the name such as test-db and get error  " your MySQL server version for the right syntax to use near '-db' at line" then you might be wondering how to get it done as your business require MySQL database name with hyphen " - "  Here is the fix, use escape character " ` " before and after database name such as `test-db` and you will be able to create database with hyphen. CREATE DATABASE `test-db`; 
Post a Comment
Read more