How to Target MySQL Servers in Turbonomic

Document created by anson.mccook Expert on Sep 1, 2015Last modified by Ben Yemini on Aug 16, 2016
Version 5Show Document
  • View in full screen mode

The following setup is only applicable to users with the Application Control Module or Application Edition running on 5.3 or higher.

 

If you do not have the Application Control Module or Application Edition, please contact your Customer Experience representative or your Account Executive for licensing.

 

Ensure your Turbonomic appliance is running 5.3 or higher. Follow these instructions to update:

How To Perform an Operations Manager "Offline Update" - Latest Links Included

 

Table of Contents

 

 

 

 

Introduction

In this document we’ll review how to setup control for MySQL Databases.

 

Enable Remote Access

See How Do I Enable Remote Access To MySQL Database Server? for the original article.

 

1) Login to the MySQL server. Open a console or SSH session into the MySQL database server. Login as the root user.

2) Edit the my.cnf file. Once connected you need to edit the MySQL server configuration file my.cnf using a text editor such as vi:

  • If you are using Debian Linux file is located at /etc/mysql/my.cnf location.
  • If you are using Red Hat Linux/Fedora/Centos Linux file is located at /etc/my.cnf location.
  • If you are using FreeBSD you need to create a file /var/db/mysql/my.cnf location.

 

Edit the /etc/my.cnf run:

# vi /etc/my.cnf

3) Once the file is opened, locate the line that reads as follows

[mysqld]

Ensure the line skip-networking is commented (or remove line) and add following line:

bind-address=YOUR-SERVER-IP

For example, if your MySQL server IP is 65.55.55.2 then entire block should be look like as follows:

{mysqld]
user            = mysql
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
port            = 3306
basedir         = /usr
datadir         = /var/lib/mysql
tmpdir          = /tmp
language        = /usr/share/mysql/English
bind-address    = 65.55.55.2
# skip-networking
...
...
...

 

Where,

  • bind-address: IP address to bind to.
  • skip-networking : Don’t listen for TCP/IP connections at all. All interaction with mysqld must be made via Unix sockets. This option is highly recommended for systems where only local requests are allowed. Since you need to allow remote connection this line should be removed from my.cnf or put it in comment state.

4) Save and Close the file.

If you are using Debian / Ubuntu Linux, type the following command to restart the mysql server:

# /etc/init.d/mysql restart


If you are using RHEL / CentOS / Fedora / Scientific Linux, type the following command to restart the mysql server:

# /etc/init.d/mysqld restart


If you are using FreeBSD, type the following command to restart the mysql server:

# /usr/local/etc/rc.d/mysql-server stop

# /usr/local/etc/rc.d/mysql-server start

 

OR

 

# /usr/local/etc/rc.d/mysql-server restart

 

 

Open the Firewall for the MySQL Port

The firewall on the VM containing the MySQL instance must allow connections to the public MySQL por

Linux

1) Open TCP port 3306 using iptables or BSD pf firewall.

 

A sample iptables rule to open Linux iptables firewall:

/sbin/iptables -A INPUT -i eth0 -p tcp --destination-port 3306 -j ACCEPT

 

OR only allow remote connection from your web server located at 10.5.1.3 (use the address of Turbonomic:

/sbin/iptables -A INPUT -i eth0 -s 10.5.1.3 -p tcp --destination-port 3306 -j ACCEPT

 

OR only allow remote connection from your lan subnet 192.168.1.0/24 (use the lan subnet that Turbonomic is on:

/sbin/iptables -A INPUT -i eth0 -s 192.168.1.0/24 -p tcp --destination-port 3306 -j ACCEPT

 

2) Save all rules (RHEL / CentOS specific command):

# service iptables save

 

A sample FreeBSD / OpenBSD / NetBSD pf firewall rule ( /etc/pf.conf)

Use the following to open port 3306 on a BSD based systems:

pass in on $ext_if proto tcp from any to any port 3306

 

OR allow only access from your web server located at 10.5.1.3 (use the address of Turbonomic):

pass in on $ext_if proto tcp from 10.5.1.3 to any port 3306  flags S/SA synproxy state

Windows

There are any number of good articles explaining how to open a firewall port for your version of Windows. Web search is your friend.

 

Configuration

MySQL must be configured to capture the metrics required for the MySQL mediation.

 

VMWare Tools

VMWare Tools must be installed on the VM hosting the MySQL instance.

 

Performance Schema

The performance schema must be enabled. Issue the following statement. The Value column value must be ON.

SHOW VARIABLES LIKE 'performance_schema'; 

 

If not, please see https://dev.mysql.com/doc/refman/5.6/en/performance-schema-quick-start.html for instructions on how to enable performance schema.

 

Transactions Metrics

The metrics used for transactions must be enabled. Issue the following statement. The status column value must be enabled for the rows with the names trx_rw_commits, trx_nl_ro_commits, trx_ro_commits, trx_rollbacks.

SELECT name, subsystem, status FROM INFORMATION_SCHEMA.INNODB_METRICS ORDER BY NAME;  

 

If not, issue the following statements.

SET GLOBAL innodb_monitor_enable = trx_rw_commits;  SET GLOBAL innodb_monitor_enable = trx_nl_ro_commits;   SET GLOBAL innodb_monitor_enable = trx_ro_commits;   SET GLOBAL innodb_monitor_enable = trx_rollbacks;

 

 

Response Time Metrics

The metrics used for response time must be enabled. Issue the following statement. The values in the enabled and timed columns for all rows must be YES.

If not, issue the following statements.

UPDATE performance_schema.setup_instruments SET ENABLED = ‘YES' WHERE NAME LIKE ’statement/%';  UPDATE performance_schema.setup_instruments SET TIMED = ‘YES' WHERE NAME LIKE ’statement/%'; 

 

Create a User

A MySQL user with remote access to the MySQL instance and sufficient permission to access the require metrics must be defined.A user with the least amount of privileges required can be defined by issuing the following statements. Replace %.%.%.% with the IP address of your Turbonomic instance. Replace the IDENTIFIED BY value with the password of your choice.

CREATE USER 'leastpriv'@'%.%.%.%' IDENTIFIED BY 'vmturbo';  GRANT SELECT ON performance_schema.* TO 'leastpriv'@'%.%.%.%';  GRANT PROCESS ON *.* TO 'leastpriv'@'%.%.%.%';  FLUSH PRIVILEGES; 

 

Add the MySQL Target

MySQL Targets can be address targets or scope targets. In this example, we will target an address MySQL target.

 

1) Go to Admin > Workflows > Target Configuration > Database > MySQL.

2) The Address is the IP address or DNS name of the MySQL target. The Port number is 3306, the port we opened on the firewall. The Username and Password are the user name we defined above.

3) Click the Add button. The target should appear on the Pending Targets list. Click Apply. The Target Configuration page will appear. Click Rediscover or Rediscover All.

4) After discovery and regrouping has completed you will see the MySQL DB in the Inventory tab. You will be able to see decisions based on the demand of the application from the virtual machine. Metrics collected include:

  • DBMem
  • Connection
  • Transaction
  • Response Time
  • Transaction Log

 

 

Attachments

    Outcomes