Solved

Manage MySQL via SSH

Posted on 2014-04-18
22
408 Views
Last Modified: 2014-04-18
I'm trying to boost the max_allowed_packet in mySQL. I can connect via SSH and change to root user. I've written the change to my.cnf, but I do not know the correct syntax to restart mysqld.

typing service mysqld restart in SSH returns "service command not found".
0
Comment
Question by:webdork
  • 11
  • 11
22 Comments
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
You need the full path.

Type /sbin/service mysld restart

HTH,
Dan
0
 

Author Comment

by:webdork
Comment Utility
typing /sbin/service mysld restart

returns mysld unrecognized seervice
0
 

Author Comment

by:webdork
Comment Utility
service
0
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
Yup, typo.

/sbin/service mysqld restart
0
 

Author Comment

by:webdork
Comment Utility
Tried that.

root@ip-xx.xx.xxx.xxx [/home/xxxxxxx]# /sbin/service mysqld restart
mysqld: unrecognized service
0
 
LVL 34

Accepted Solution

by:
Dan Craciun earned 500 total points
Comment Utility
What OS are you using? service is usually available on Redhat and variants (Fedora, CentOS etc.).

On others you can try:
sudo /etc/init.d mysqld restart

Or your daemon might be called otherwise.

use ps -aux | grep mysql
to check what processes are running that have mysql in their names.
0
 

Author Comment

by:webdork
Comment Utility
Cent OS 5
0
 

Author Comment

by:webdork
Comment Utility
root@ip-xx-xx-xxx-xxx [/home/xxxxxxxx]# sudo/etc/init.d mysqld restart
bash: sudo/etc/init.d: No such file or directory
0
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
OK, so service is available. What's the output of the ps command?
0
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
Tested on Centos 6 and these both work:

/sbin/service mysqld restart
/etc/init.d/mysqld restart
0
 

Author Comment

by:webdork
Comment Utility
root@ip-xxxxxx [/home/xxxx]# ps
  PID TTY          TIME CMD
15818 pts/0    00:00:00 su
15823 pts/0    00:00:00 bash
16024 pts/0    00:00:00 ps
0
IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
ps -aux | grep mysql
0
 

Author Comment

by:webdork
Comment Utility
verbatim give bad syntax:

root@ip-xxxxxxxxxxx [/home/xxxxxxxxxx]# ps -aux | grep mysql
Warning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.7/FAQ
0
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
ps aux | grep mysql

It should list 3 processes containing "mysql".

It should work with the -, even with the warning...
0
 

Author Comment

by:webdork
Comment Utility
here is the return from typing: ps aux | grep mysql



root@ip-xxxxxxxxxx [/home/xxxxxxxxx]# ps aux | grep mysql
root      3622  0.0  0.0   2564  1188 ?        S    Apr15   0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/my              sql --pid-file=/var/lib/mysql/ip-xxxxxxxip.secureserver.net.pid
mysql     3725  0.0  2.1 331908 69116 ?        Sl   Apr15   1:07 /usr/sbin/mysqld --basedir=/usr --datadir=/var/lib              /mysql --plugin-dir=/usr/lib/mysql/plugin --user=mysql --log-error=/var/lib/mysql/ip-xxxxxxxx.ip.secureserver.              net.err --pid-file=/var/lib/mysql/ip-5xxxxxxxxxxx.ip.secureserver.net.pid
root     16066  0.0  0.0   1952   560 pts/0    S+   09:51   0:00 grep mysql
0
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
OK. So the mysqld daemon is named "mysqld" and is running.

What's the output of
/etc/init.d/mysqld restart
0
 

Author Comment

by:webdork
Comment Utility
root@ip-xxxxxxxxxxx [/home/xxxxxxxxxxx]# /etc/init.d/mysqld restart
bash: /etc/init.d/mysqld: No such file or directory
0
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
Then I don't understand. I don't have a CentOS 5 box to test on, but the same commands apply since CentOS 4 so it should work.
The exception is if you or someone else manually compiled MySQL and did not create the start/stop/restart scripts, but I don't think that's the case.

You can do it the hard way, by killing processes with pid 3622 and 3725 and then running:
/bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/ip-xxxxxxxip.secureserver.net.pid

Open in new window

but that will cause problems, as the pid file will still exist after a dirty exit and you might lose uncommitted transactions.
0
 

Author Comment

by:webdork
Comment Utility
I got the answer from the server tech support in about 10 seconds (below).  The last tech support guy said "gee we cant help you with that" - go figure.

I'll certainly give you credit for the solution.


root@ip-xxxxxxxxxxxxx [~]# service mysql restart
Shutting down MySQL.... SUCCESS!
Starting MySQL.. SUCCESS!
root@ip-xxxxxxxxxxxxxxx [~]#
0
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
They renamed the service name from mysqld to mysql... Why?
0
 

Author Closing Comment

by:webdork
Comment Utility
My best experience in 5 years with EE.

Quick with advice
Stayed engaged
Put up with my frustation
0
 
LVL 34

Expert Comment

by:Dan Craciun
Comment Utility
Glad I could help!

PS: I own a small support company so I know a bit about frustrated clients :)
0

Featured Post

Complete Microsoft Windows PC® & Mac Backup

Backup and recovery solutions to protect all your PCs & Mac– on-premises or in remote locations. Acronis backs up entire PC or Mac with patented reliable disk imaging technology and you will be able to restore workstations to a new, dissimilar hardware in minutes.

Join & Write a Comment

Hi, in this article I'm going to teach you how to run your own site, and how to let people in (without IP). I'll talk about and explain each step... :) By the way, everything in this Tutorial is completely free and legal. This article is for …
In Solr 4.0 it is possible to atomically (or partially) update individual fields in a document. This article will show the operations possible for atomic updating as well as setting up your Solr instance to be able to perform the actions. One major …
This video shows how to remove a single email address from the Outlook 2010 Auto Suggestion memory. NOTE: For Outlook 2016 and 2013 perform the exact same steps. Open a new email: Click the New email button in Outlook. Start typing the address: …
When you create an app prototype with Adobe XD, you can insert system screens -- sharing or Control Center, for example -- with just a few clicks. This video shows you how. You can take the full course on Experts Exchange at http://bit.ly/XDcourse.

762 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

Need Help in Real-Time?

Connect with top rated Experts

9 Experts available now in Live!

Get 1:1 Help Now