|[0:00:00]||Welcome back to the Checkmk channel, today we're looking at host and service groups.|
|[0:00:14]||The concept of host and service groups is pretty straight forward, you can simply bundle hosts and services together and then give it a name. And while operating your monitoring system you can then perform actions on an entire group instead of having to apply the same action over and over again on each individual host. So for the management of these host and service groups you go to 'Setup' and then under 'Hosts' you have 'Host groups' and under 'Services' you have 'Service groups'.|
|[0:00:45]||So if I click on Host groups, I see there currently are no groups. But if you want to toggle fast to service groups under 'Related' there is a option 'Service groups'. So here you can toggle between the two. Okay so now let's add our first group.|
|[0:01:05]||Okay we first need to give it a handle or an ID, and I will call this one 'prod'and then alias will be 'Production Systems'. Okay now we save this one, and let's quickly create a second one, which is called 'test'. And will be 'Test Systems'.|
|[0:01:37]||So what you need to know is that one host can be part of multiple groups. In this example we have 'Production Systems' and 'Test Systems', so a host will probably not be in both systems at the same time. But if you for example have another group called web servers, then the host could be in the production group and be in that new group called web servers. Okay so now we need to assign hosts to these groups. And in Checkmk that is done using rules. So you have this button here called 'Rules'. If you click on it we can simply create a new rule and you see the rule is called 'Assignment of hosts to host groups'. Okay so let's create one. Now we select the group that we want to assign the host to. It's already pre-selected now, 'Production Systems' that's fine and now we need to set the conditions. So when is a host being assigned to this group, we can use a host tag for that. There is one called 'Criticality' here. Let's add that one. So we want to add the host to the group when the criticality is production system, these are predefined criticalities in Checkmk. So that looks about right let's save it and I do the same thing for our test group.|
|[0:03:05]||So let's create another one.We assign them to the test systems and again the host tag 'Criticality' and this time it has to be 'Test system'.|
|[0:03:21]||This is of course a very simple example where the group name is pretty much the same as the host tag.|
|[0:03:27]||In practice you will probably have more complex rules to assign hosts to groups and that's why groups are useful to use alongside host tags. Now let's take a look at the rules, you'll see that when the criticality is 'Productive system', we will assign them to the production systems group and the same goes for 'Test systems', then we assign them to the test systems group.|
|[0:03:54]||Now the only thing left to do is activate the changes, as always. So let's click here. And now all our hosts should be assigned to the correct group, so let's take a look.|
|[0:04:09]||And you can find that here under 'Monitor', and then 'Overview', and 'Host groups'. So here you have an overview of all our host groups.|
|[0:04:21]||You'll see that there are six hosts in this group you also can see the amount of services here, and their status so 'Warning', CRIT, OK, etc. So now the question is where is our Test systems group, well it appears that it's empty and that's because none of the hosts meets the conditions that we set on the rule. So whenever a group is empty it will not show up in this host group's overview.|
|[0:04:46]||So let's fix this. And we can do that simply by giving one or more hosts the criticality 'Test system'. So we go to the setup of our hosts so Setup > Hosts and let's give these two so just check the boxes so we can edit the attribute at the same time.|
|[0:05:06]||And now let's go to 'Hosts' and then 'Edit attributes'.Okay so we can change the criticality and you can do that here. You can explicitly set it to something and we're gonna explicitly set it to 'Test system'. Okay then we simply save and obviously activate the changes.|
|[0:05:36]||And now if we go back to monitor and or host groups you'll see that there is now a 'Test systems' group with the two hosts that we just gave the new criticality. And you can do the same with services so once again go to Setup and then under Services go to 'Service groups'.|
|[0:05:56]||And now let's add one. So add group and we'll call this one 'cpu' and alias should be CPU. Okay, save. Just like with host groups there are rules. So now let's set the rule for this service group.|
|[0:06:14]||Now this time we don't care about properties of the individual host. We just going to assign services that start with the string 'CPU'.|
|So every service starting with 'CPU' should be part of this group. Okay now, save it. And as always apply changes.|
|[0:06:47]||And to view the service groups once again go to Monitor and then here to 'Service groups'. And now you see we have a group called CPU with nine services in it. When you click on a service group, you'll see an overview of all the services grouped underneath their host.|
|[0:07:10]||Like you can see this can create a very clear overview of all services and hosts that share specific properties. And as you will see in the next episode, you can also use these hosts and service groups in our 'Quicksearch' to search for a very specific host and services. So that was our introduction into hosts and service groups. You can of course do a lot more with these groups and if you want to learn more, you can take a look at our documentation on docs.checkmk.com.|
|[0:07:42]||If this video was helpful to you please subscribe to the channel and like the video. See you next time.|
Ep. 1: Installing Checkmk 2.0 and monitoring your first host
In this video, Baris explains how to take get started with Checkmk and start monitoring your first host within a few minutes.
Ep. 2: The Checkmk 2.0 user interface
In this video, Baris take you through the new user interface in Checkmk 2.0. He explains the various components of the User interface such as the new navigation menus, the Sidebar, main dashboard, tactical overview, how to switch between the Checkmk interface themes and much more
Ep. 3: Using SNMP to monitor network devices in Checkmk 2.0
In this episode, Baris explains how to monitor network devices with Checkmk. SNMP is a protocol that many switches, routers, printers, UPSs, hardware sensors and other devices have implemented with the purpose of being able to monitor them easily.
Ep. 4: Monitoring Windows in Checkmk
In this video of our Getting started with Checkmk series, Baris explains how to install a Checkmk agent on a Windows host system and add that into your monitoring environment.
Ep. 5: Using metrics and graphs in Checkmk 2.0
In the 5th episode of the Getting started with Checkmk series, Baris explains using various metrics that you can monitor in Checkmk such as CPU utilization, CPU load etc. You can also see graph visualizations for these metrics or create and customize your own as per your requirements.
Ep. 6: Updating Checkmk 2.0 and using multiple instances
In this video, Baris explains how to update your Checkmk instance. It is very easy and can be done within minutes. You can run multiple Checkmk instances with different versions on the same system. This gives you the flexibility to test the new version before using it in production.
Ep. 7 (part 1): Working with rules and setting thresholds in Checkmk
In the following three-part videos series, Baris explains rule-based monitoring with Checkmk. In the first part, he shows you how you can work with rules and set threshold values. Rule-based configuration is one of the key features for Checkmk which helps you to scale your monitoring easily within minutes.
Ep. 7 (part 2): Smart rules with Host Tags in Checkmk
In the second part of this video, Baris explains using Smart rules with host tags in Checkmk. In the first part, he shows you how you can work with rules and set threshold values. These are features that you can use to build your rules even more intelligently and to better organize your monitoring.
Ep. 7 (part 3): Managing Hosts in Folder in Checkmk
In this final part of our episode on Rule-based monitoring in Checkmk, Baris demonstrates how to manage hosts in folders in Checkmk. This helps you to apply your monitoring configurations at scale and organize your hosts according to your needs.
Ep. 9: Using the Quicksearch function in Checkmk
In this episode of the Checkmk tutorials, Baris shows how you can use the Quicksearch function in Checkmk. You can use it to easily find and manage certain hosts or services. He also explains some examples of filters to you. In Checkmk 2.0 you can use the same syntax in the Seach function found in the monitor menu to get identical results.
Ep. 10: Detecting configuration errors with the Analyze Configuration feature
With the Analyze Configuration feature, you can check if there are any configuration errors in your installation. Checkmk controls a number of possible security risks or potential performance restrictions and indicates if there are any problems.
Ep. 11: View creation and customization in Checkmk
In this video, Baris demonstrates how to customize headers, columns, and more in Views in Checkmk for yourself or other users. He also explains how to create custom views and add desired information to these views.
Ep. 12: Acknowledging problems in Checkmk
In this video, Baris explains how you can acknowledge problems in Checkmk. This function helps you to qualify the states of hosts and services. This allows you to keep track of messages in the main dashboard and, for example, you can add comments to problems.
Ep. 13: Scheduling downtimes in Checkmk
In the episode of our Getting started with Checkmk series, Baris explains how you can manage the maintenance times of your systems in Checkmk. Such scheduled downtimes prevent your monitoring from sending false alarms when a host or service goes to WARN or CRIT during maintenance work. You can also inform the users concerned about the maintenance via Checkmk.
Ep. 14: Distributed monitoring with Checkmk
In this video, Baris explains how you can connect several Checkmk instances to a monitoring system and then manage it.
Ep. 15: MKPs and Plugins in Checkmk
In the 15th episode of our Getting started with Checkmk tutorial series, Baris explains what are Checkmk Extension Packages (MKPs) and how easy it is to integrate them into your Checkmk monitoring environment. MKPs are the preferred format when you make your own extensions as it makes it easy to share with other users or deploy in distributed environments.
Ep. 16: Working with 'Bulk Actions' in Checkmk
In this episode of our Checkmk tutorials series, Baris explains how you can save a lot of time with bulk actions. With this feature you can perform various tasks such as deleting, renaming, service discovery etc. on a large number of hosts simultaneously.
Ep. 17: Working with network topologies in Checkmk
In this video of our gettign startted with Checkmk series, Baris explains how to map network topologies in Checkmk. This feature is quite helpful to manage your network and prevent any unnecessary notifications from the devices in your network.
Ep. 18: Creating and customizing dashboards in Checkmk
In this video of our Getting started with Checkmk series, Mathias explains how you can create and customize dashboards in Checkmk 2.0, so you can get insights into your monitoring according to your requirements. Find out more in this video.
Ep. 19: Monitoring websites and their certificates with Checkmk
In this episode, Bastian demonstrates how to monitor a website and its certificate with Checkmk. You can also monitor specific web pages with Checkmk by using the several options that will suit your use case. Learn more in this video.
Ep. 20: Configuring dashboard elements in Checkmk
Learn how to add data visualization elements of the various metrics into your Checkmk Dashboard. In this video, Mathias explains how you can configure these elements and create a dashboard as per your requirements.
Ep. 21: Setting up notifications in Checkmk
Learn how to set up notifications in Checkmk and assign relevant contacts and contact groups to be notified for various events. Later in this video, our presenter Bastian also demonstrates how you can set up rule-based notifications according to different conditions for hosts and services.
Ep. 22: Monitoring logfiles with Checkmk
Monitor your logfiles with Checkmk using its Logwatch plugin. It is very useful when you want to monitor your logfiles regardless of whether you are using a UNIX/Linux or a windows based system. Learn more in this video.
Ep. 24: 3 Rules for efficient network monitoring
In this video, Bastian demonstrates 3 rules that will help you to efficiently monitor your network interfaces. With Checkmk 2.0, with just three rules, you can set up an efficient network monitoring that will not only monitor all of your network interfaces but also simultaneously provide a detailed overview of all of your ports.
Ep. 25: New UX and security improvements in Checkmk 2.1
Checkmk 2.1 come with many UX improvements such as pre-built dashboards for Linux and Windows, faster core performance and much more. Security features such as two-factor authentication etc. were also added in this new version. Watch this video to learn how to use these new features and enhancements in Checkmk.
Ep. 28: Working with InfluxDB integration in Checkmk
Learn how to send data to InfluxDB from Checkmk. As InfluxDB introduced a new protocol to send data to it, a new connector was developed with Checkmk to talk natively with it. Learn more about it in this video.
Ep. 29: New agent architecture in Checkmk 2.1
With Checkmk 2.1, the agent architecture was modified to enable performance improvements and add new features such as TLS encryption, data compression, and the reversal of direction of communication from the agent. This will enable push mode and pull mode.
Ep. 30: Clustering the Checkmk appliance
In this video, Robin demonstrates how you can cluster your Checkmk appliance to make it resilient against hardware failures. If you are using the Checkmk hardware appliance, it may be helpful to cluster your appliance to maintain high availability.
Ep. 32: Working with the Agent bakery in Checkmk
In this video, Robin demonstrates how to roll out agent packages with the required configuration for different monitored systems using the agent bakery in Checkmk. The "Automatic agent update" is quite a helpful feature as it pulls the latest configurations for an agent automatically and you don't need to manually update all of your agents deployed on different systems.
Ep 33: Monitoring Docker containers with Checkmk
Learn how to monitor Docker containers with Checkmk.In this video, Robin demonstrates the process of setting up a rule to configure the docker plugin and bake an agent with the desired settings for the Docker host.
Ep 34: Introduction to Checkmk Ansible collection
Last year the Checkmk Ansible collection was created to interact with the Checkmk REST API. In this video, Robin demonstrates how you can use this Ansible collection to automate your monitoring with Checkmk.
Ep 35: Monitoring SQL databases with Checkmk
In this video, Robin demonstrates how you can configure your Checkmk site to monitor your SQL databases. As there are many flavours of SQL databases, the process is mostly the same.
Ep. 36: Introduction to different types of checks for monitoring with Checkmk
Learn about the different types of "checks" and services in Checkmk. In this video, Robin demonstrates how you can expand the information collected by your Checkmk agent using these different "Checks".
Ep. 43: Working with Hardware/Software inventory in Checkmk
In this video, Robin demonstrates the hardware/software inventory feature in Checkmk. With this feature one can get an overview of various pieces of hardware present in their servers, switches etc. and also the software packages installed on their operating system. Watch this video to learn more.