Difference between revisions of "3rd party software/SQL"
From Freeside
(→MySQL) |
(→MySQL) |
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:See more information about the max_connections setting at http://dev.mysql.com/doc/refman/5.0/en/too-many-connections.html | :See more information about the max_connections setting at http://dev.mysql.com/doc/refman/5.0/en/too-many-connections.html | ||
:Also, you can set this on a per user basis, so 'freeside' could have 30 connections, and the radius server could have 50 connections. This finer grained tuning is an exercise left to the user. (feel free to log your findings in the talk page if you see fit) | :Also, you can set this on a per user basis, so 'freeside' could have 30 connections, and the radius server could have 50 connections. This finer grained tuning is an exercise left to the user. (feel free to log your findings in the talk page if you see fit) | ||
| + | ;FAQ - How do I tell what port mysql uses? | ||
| + | :You can check the server directly, or make a good guess from a client. The default port is most always <code>3306</code>. Use these steps to confirm, or to isolate for troubleshooting. | ||
| + | :On the server | ||
| + | :* <code># netstat -tlnp | grep mysqld</code> | ||
| + | :* <code>$ grep mysql /etc/services</code> | ||
| + | :* Review the <code>[mysqld]</code> section of <code>/etc/mysql/my.cnf</code> for <code>port = </code> settings. (file location varies) | ||
| + | :As a mysql client | ||
| + | :* Review the <code>[client]</code> section of <code>/etc/mysql/my.cnf</code> for <code>port = </code> settings. (file location varies) | ||
| + | :* As a last resort, <code>strace -e connect mysql -h example.com</code> Output will be less noisy if you use <code>example.com</code> as a literal. Eg, <code>connect(3, {sa_family=AF_INET, sin_port=htons(3306), sin_addr=inet_addr("208.77.188.166")}, 16 <unfinished ...></code> | ||
= See Also = | = See Also = | ||
[http://en.wikipedia.org/wiki/Category:Database_management_systems List of DBMS on Wikipedia] | [http://en.wikipedia.org/wiki/Category:Database_management_systems List of DBMS on Wikipedia] | ||
Revision as of 09:06, 12 February 2008
PostgreSQL
- Website
- http://www.postgresql.org/
- About
- http://www.postgresql.org/about/
- FAQ
- http://www.postgresql.org/docs/faqs.FAQ.html
- Wikipedia
- http://en.wikipedia.org/wiki/Postgresql
- Manuals
- http://www.postgresql.org/docs/
MySQL
- Website
- http://www.mysql.com
- About
- http://www.mysql.org/company/
- FAQ
- http://www.mysql.com/industry/faq/
- Wikipedia
- http://en.wikipedia.org/wiki/MySQL
- Manuals
- http://dev.mysql.com/doc/#refman
- FAQ - Why do I get "Too many connections" when connecting to MySQL, and how can I solve it?
- The MySQL server limits how many connections are used when connecting. This prevents complications from out of control, or too many connections that might otherwise leave the server unresponsive.
- See more information about the max_connections setting at http://dev.mysql.com/doc/refman/5.0/en/too-many-connections.html
- Also, you can set this on a per user basis, so 'freeside' could have 30 connections, and the radius server could have 50 connections. This finer grained tuning is an exercise left to the user. (feel free to log your findings in the talk page if you see fit)
- FAQ - How do I tell what port mysql uses?
- You can check the server directly, or make a good guess from a client. The default port is most always
3306. Use these steps to confirm, or to isolate for troubleshooting. - On the server
-
# netstat -tlnp | grep mysqld -
$ grep mysql /etc/services - Review the
[mysqld]section of/etc/mysql/my.cnfforport =settings. (file location varies)
-
- As a mysql client
- Review the
[client]section of/etc/mysql/my.cnfforport =settings. (file location varies) - As a last resort,
strace -e connect mysql -h example.comOutput will be less noisy if you useexample.comas a literal. Eg,connect(3, {sa_family=AF_INET, sin_port=htons(3306), sin_addr=inet_addr("208.77.188.166")}, 16 <unfinished ...>
- Review the
