RHEL 7 collectd dbi freetds issues - dbi

Question

I can't seem to get the dbi plugin working for collectd on RHEL 7. I am trying to connect to Microsoft SQL Server using the FreeTDS driver, but collectd/dbi can't find it.
I've installed the latest collectd:
Name : collectd
Arch : x86_64
Version : 5.5.2
Release : 1.el7
Size : 1.8 M
Repo : installed
From repo : epel
Summary : Statistics collection daemon for filling RRD files
License : GPLv2
I've installed collectd-dbi:
Name : collectd-dbi
Arch : x86_64
Version : 5.5.2
Release : 1.el7
Size : 32 k
Repo : installed
From repo : /collectd-dbi-5.5.2-1.el7.x86_64
Summary : DBI plugin for collectd
License : GPLv2
I've installed FreeTDS:
Name : freetds
Arch : x86_64
Version : 0.95.81
Release : 1.el7
Size : 2.7 M
Repo : installed
From repo : epel
Summary : Implementation of the TDS (Tabular DataStream) protocol
License : LGPLv2+ and GPLv2+
collectd shows an error when trying to load FreeTDS:
dbi plugin: cdbi_connect_database: dbi_driver_open_r (FreeTDS) failed.
What am I missing? Any help would be greatly appreciated.

Answer 1

I'm fighting the same problem myself, and while I haven't yet got it working I'm pretty sure you need DBD::Sybase in addition to collectd, collectd-dbi and freetds. I grabbed it from http://search.cpan.org/CPAN/authors/id/M/ME/MEWP/DBD-Sybase-1.15.tar.gz.
With luck you'll get past where I'm at, which is that Perl says the driver is available, but the collectd plugin can't reference it.
Seeming success on the perl side:
cat ./test.pl
#!/usr/bin/perl
use DBI;
#Prints a list of the available DBD drivers.
#available_drivers = DBI->available_drivers;
print ("The available DBD drivers are: #available_drivers.\n");
$ ./test.pl
The available DBD drivers are: DBM ExampleP File Gofer Oracle Proxy Sponge Sybase mysql.
But I get this error in the collectd log:
[2016-09-27 14:18:09] dbi plugin: cdbi_connect_database: dbi_driver_open_r (Sybase) failed.
[2016-09-27 14:18:09] dbi plugin: Maybe the driver isn't installed? Known drivers are:
[2016-09-27 14:18:09] dbi plugin: * mysql
That mysql driver became available after I installed the libdbi-dbd-mysql rpm, but no love yet getting it to recognize the Sybase driver.