collectd is a daemon, which collects system data and statistics and it may send them over the network to a back-end data. Under CentOS Stream 9 the collectd package has been removed from the CentOS Stream 9 repositories. Special Interest Groups (SIG), which is a group of CentOS Community, provides and supports multiple small repositories for different Linux utilities and tools. One of the SIG‘s repositories is OpsTools, which provides a package for collectd daemon and multiple collectd modules packed in separate packages.
To use collectd under CentOS Stream 9 a CentOS Community repository should be installed – OpsTools.
Steps to install and use the collectd daemon:
dnf install -y centos-release-opstools dnf install -y collectd
It’s worth noting that all the Linux distribution, which tries to track and be compatible with Red Hat Enterprise Linux like Rocky Linux will have the same problem with missing collectd package. So the SIG OpsTools repository should be also possible to install under all of these Linux distributions.
Here is the output of installing the above packages under CentOS Stream 9:
[root@srv ~]# dnf install -y centos-release-opstools Last metadata expiration check: 0:00:23 ago on Wed 22 Jun 2022 02:05:19 PM UTC. Dependencies resolved. ====================================================================================== Package Architecture Version Repository Size ====================================================================================== Installing: centos-release-opstools noarch 1-12.el9s extras-common 8.4 k Transaction Summary ====================================================================================== Install 1 Package Total download size: 8.4 k Installed size: 1.7 k Downloading Packages: centos-release-opstools-1-12.el9s.noarch.rpm 62 kB/s | 8.4 kB 00:00 -------------------------------------------------------------------------------------- Total 22 kB/s | 8.4 kB 00:00 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : centos-release-opstools-1-12.el9s.noarch 1/1 Verifying : centos-release-opstools-1-12.el9s.noarch 1/1 Installed: centos-release-opstools-1-12.el9s.noarch Complete! [root@srv ~]# dnf install -y collectd CentOS Stream 9 - OpsTools - collectd 12 kB/s | 41 kB 00:03 Dependencies resolved. ====================================================================================== Package Architecture Version Repository Size ====================================================================================== Installing: collectd x86_64 5.12.0-7.el9s centos-opstools 673 k Installing dependencies: yajl x86_64 2.1.0-20.el9 appstream 38 k Transaction Summary ====================================================================================== Install 2 Packages Total download size: 711 k Installed size: 2.2 M Downloading Packages: (1/2): yajl-2.1.0-20.el9.x86_64.rpm 179 kB/s | 38 kB 00:00 (2/2): collectd-5.12.0-7.el9s.x86_64.rpm 1.1 MB/s | 673 kB 00:00 -------------------------------------------------------------------------------------- Total 594 kB/s | 711 kB 00:01 CentOS Stream 9 - OpsTools - collectd 1.0 MB/s | 1.0 kB 00:00 Importing GPG key 0x51BC2A13: Userid : "CentOS OpsTools SIG (https://wiki.centos.org/SpecialInterestGroup/OpsTools) <security@centos.org>" Fingerprint: 7872 8176 9AD7 3878 85EE A649 4FD9 5327 51BC 2A13 From : /etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-SIG-OpsTools Key imported successfully Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : yajl-2.1.0-20.el9.x86_64 1/2 Installing : collectd-5.12.0-7.el9s.x86_64 2/2 Running scriptlet: collectd-5.12.0-7.el9s.x86_64 2/2 Verifying : collectd-5.12.0-7.el9s.x86_64 1/2 Verifying : yajl-2.1.0-20.el9.x86_64 2/2 Installed: collectd-5.12.0-7.el9s.x86_64 yajl-2.1.0-20.el9.x86_64 Complete!
collectd default configuration
The default configuration comments all the lines in /etc/collectd.conf except one, which includes all the files under /etc/collectd.d/. So the logic is to have a separate file for each collectd plugin. By default, there are 5 default configuration files activating 5 plugins:
Keep on reading!