Solved

mysql Reload option!

Posted on 2014-12-12
7
124 Views
Last Modified: 2015-02-05
can someone please explain how does "mysql reload" works comparing to "mysql restart".
I made some changes on my.conf file, and I can't afford to restart mysql server. since "reload" is one of the mysql options (mysql start|restart|stop|force-reload|relaod), I tried it, but it doesn't apply the changes that I made to my.conf.

thanks
0
Comment
Question by:CCVOIP
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 3
7 Comments
 
LVL 58

Expert Comment

by:Gary
ID: 40497439
reload reloads the conf files (configuration files) without stopping the server/program which should be pretty much instantaneous

restart stops the server/program and then starts it again which takes time
0
 

Author Comment

by:CCVOIP
ID: 40497452
thanks for your reply.
if reload reloads the conf files, why it is not working for me. I uncommented two parameter within my.cnf:
   server-id = 1
   log_bin =  /var/log/mysql/mysql-bin.log
and saved the changes, then executed  /etc/init.d/mysql reload
but "show master status" still returns empty set
0
 
LVL 58

Expert Comment

by:Gary
ID: 40497464
Not everything can be reloaded and log_bin would be one of them - that requires a restart - why would you want to change this while running?

I'll see if I can find a comprehensive list
0
Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

 

Author Comment

by:CCVOIP
ID: 40497477
so the "reload" applies only for a dynamic variables!!
I was asked to set up a replication, and see if there is any way to do it without restarting the mysql server. I wonder if you have any suggestion to achieve that

thanks
0
 
LVL 58

Expert Comment

by:Gary
ID: 40497481
Yes, cannot find a list of what you can change but yes dynamic variables that do not adversely affect the MySQL server.
So things like changing paths for example are not gonna work.
0
 
LVL 58

Accepted Solution

by:
Gary earned 500 total points
ID: 40497483
Suggestions...
I don't see how because of the reasons above, is a few seconds that important?
It's not something I would be overly familiar with but the closest example I found is this which still requires restarting
http://plusbryan.com/mysql-replication-without-downtime
0
 

Author Comment

by:CCVOIP
ID: 40497495
thanks for the link. I am  going to work on it when there is no heavy access to the production server.
0

Featured Post

Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Foreword In the years since this article was written, numerous hacking attacks have targeted password-protected web sites.  The storage of client passwords has become a subject of much discussion, some of it useful and some of it misguided.  Of cou…
Foreword This is an old article.  Instead of using the MySQL extension that was used in the original code examples, please choose one of the currently supported database extensions instead.  More information is available here: MySQLi / PDO (http://…
Monitoring a network: why having a policy is the best policy? Michael Kulchisky, MCSE, MCSA, MCP, VTSP, VSP, CCSP outlines the enormous benefits of having a policy-based approach when monitoring medium and large networks. Software utilized in this v…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…

623 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question