I'm trying to install the mysql2 gem for a rails app on a machine with an external mysql server. The machine I'm installing onto doesn't have or need a mysql server on it. However, whenever I try to install it always checks for a mysql install and fails.
Is there an install configuration or work-around for this?
Cheers
You need just the MySQL header files to be there where the native compiling takes place.
Depending on your OS / Distribution you should find the way to install the header files without installing the actual server (Debian / Ubuntu alikes should allow you to do so with the standard apt-get, but I might be wrong).
If you are on Windows, please check this post about mysql2 gem issues on Windows.
Related
I want to use a remote MySQL database. Is there any way to install mysql2 gem in OS X without installing MySQL server locally?
Update: I found the solution. Actually, I don't need the MySQL server installed locally, I just need to install the adapter as follow..
brew install mysql-connector-c
Followed by,
gem install mysql2
Looks like the gem needs mysql installed locally to run as it uses some underlying c libraries for the client. I don't think it can work without it.
Check out https://github.com/tmtm/ruby-mysql which i believe is native ruby and may not need it, but is not compatible with 4.1.x.
I'm using CentOS 6, and trying to create a virtual mirror on a new server of an old one (which someone else setup). As much as possible, I want keep everything with the same version, but I've started from scratch and am documenting everything. By default, yum would install MySQL 5.1.73. I downloaded MySQL community v5.1.69 and installed it manually. This required installing a "shared compatibility" package of MySQL v5.1.69 first, and removing mysql-libs.x86_64. With that in place, I successfully mirrored MySQL.
Now, I'm trying to install Postfix. Yum wants to pull version 2.6.6-6. This fails because it requires a dependency that it attempts to install as well: mysql-libs.x86_64 v.5.1.73-5. It splits out a pile of errors messages which are all similar to this:
Transaction Check Error:
file /usr/share/mysql/charsets/Index.xml from install of mysql-libs-5.1.73-5.el6_6.x86_64 conflicts with file from package MySQL-server-community-5.1.69-1.rhel5.x86_64
My old server is using postfix v2.6.6-2, which is apparently compatible with MySQL v5.1.69. I found the rpm for that version of postfix. It doesn't install, because it requires mysql-libs. I can't install mysql-libs v.5.1.69, because it conflicts with the MySQL community edition (also 5.1.69) that I installed. I tried to install the MySQL 5.1.73 "shared compatibility" package, but that conflicts with MySQL community too.
I'm going in circles. Is the only way to break this chain to uninstall MySQL community? Must I just use the v5.1.73 default, and the Postfix 2.6.6-6? I don't expect any real problems, but I'm going to end up with slightly different versions of MySQL and Postfix then I am trying hard to mirror.
I gave up, uninstalled all the MySQL community packages, and just installed the out of the box yum MySQL and Postfix. That works, but I now have different versions of this software on these two servers as a result.
We are going to use mysql 5.5 in our application for production. I did some online search and it seems that mysql2 0.2.6 is the one for mysql5.5. Is this gem good for windows as well? Any tips on how to install and manage for production?
Thanks.
The gems (either mysql or mysql2) provides an version-independent layer to the version of MySQL you are running.
However, if you're using a pre-compiled gem, it will require a version specific MySQL library be installed in your system.
To avoid that, you can use MySQL Connector/C which provides a version-independent way to connect to MySQL.
I've documented how to compile mysql gem against MySQL Connector/C in this blog post:
http://blog.mmediasys.com/2011/07/07/installing-mysql-on-windows-7-x64-and-using-ruby-with-it/
mysql2 gem has some issues on Windows so I would recommend you use mysql gem for the time being.
Hope this helps.
I'm trying to install the Mysql module on my development machine but it seems to want a local Mysql installation before it will install.
Is there a work around?
I don't need or want a local installation of Mysql, I'm querying a network machine with the installation.
DBD::mysql is a wrapper around the MySQL client libraries. You will at least need to install a client, just like you would need to a client to connect to a remove MySQL server anyway.
You don't specify what system you're on or how you are trying to install DBD::mysql.
You'll need the client libraries (and if you're installing from CPAN - the source of the client libraries) but you should not need MySQL Server. If on a linux the mysql-server package is a dependency of DBD::mysql, it would be a bug.
i want to develop rails 3 apps using mysql on windows 7 (64 bit) and i have installed mysql via the msi download from the mysql site.
my question is that do i still need to install the mysql gem?
thanks
The mysql gem provides the ruby bindings, so yes, you need to install this.
With Rails 3 you should use the mysql2 gem rather than the mysql gem.
Here is a proper solution for anyone interested, that doesn't mess up your current installation of mysql server
Download a zip file with mysql server 5.1 NOT the msi one. Make sure it's 32-bit NOT 64-bit. (From here)
Since there is no installer file with this, create a folder c:\mysql-gem-install - you can remove it once you finish.
Extract all the files from the zip file into the folder you just created.
now run this command
gem install mysql2 -- '--with-mysql-lib="c:\mysql-gem-install\lib\opt" --with-mysql-include="c:\mysql-gem-install\include"'
I just installed mysql2 gem v. 0.3.7
Yes you do. The mysql gem is a ruby driver (interface) to connect to the mysql database.
You should use mysql2 gem instead with Rails3.