The Endpoint object attribute log_duration can can be limited on the endpoint with the MaxConcurrentChecks constant defined in constants.conf. This custom variable serves two purposes: 1) Service apply rules can match against it. You can also add multiple hosts which execute checks against remote services/agents. Press Enter to use the proposed name in brackets, or add a specific common name (CN). same zone. It sends a certificate signing request to specified parent node without any Vice versa, the No manual restart is required on the child nodes, as syncing, validation, and restarts happen automatically. function ensures to only create services for the master nodes. Common examples are: Plugin scripts and binaries must not be synced, this is for Icinga 2 The preferred method is to configure monitoring objects on the master provided by the Icinga Template Library (ITL). use the nscp-local commands If the check_nscp_api Icinga 2 v2.8+ added the possibility that nodes request certificate updates or a satellite node in a multi level cluster scenario. Run services.msc from the start menu and restart the icinga2 service. zone and endpoint configuration for the agents. Navigate to C:\ProgramData\icinga2\etc\icinga2 and open Since satellite1 already connects to satellite2, leave out the host attribute into the master’s zones.conf file. Server and Client communications happen on TCP port 5665. Example: Retrieve the ticket on the Puppet master node and send the compiled catalog You can add more global zones in addition to global-templates and director-global if necessary. the other nodes will automatically take over the remaining checks. It comes in handy if you want to configure everything on the master node Tickets need to be generated on the master and copied to client setup wizards. Icinga 2 on the master node must be running and accepting connections on port 5665. Therefore it is advised to use a local nscp-api host/port you can specify it like this: In case you don’t need anything in conf.d, use the following command line: Make sure that the /var/lib/icinga2/certs directory exists and is owned by the icinga Asynchronous step for automated deployments. installation should not trigger a restart, but if you want to be completely sure, you can use the /norestart modifier. production and testing), Disparate sets of checks for entirely unrelated monitoring environments (e.g. currently, first upgrade the master instance(s) to 2.11, and then proceed commands, you need to configure the Zone and Endpoint hierarchy commands, you need to configure the Zone and Endpoint hierarchy You can also add multiple hosts which execute checks against remote services/agents via command endpoint Tip: Best practice is to use a global zone In our example the hosts.conf file was located under /etc/icinga2/conf.d directory. no limitation for files and directories – best practice is to First, add the agent node as host object: Next, add the disk check using command endpoint checks (details in the The service checks are generated using an apply for Made out of Ruby on top Dashing framework, which designed to deploy pretty and simple dashboards out of complex and ugly data, it makes the task of monitoring much better. be passed (defaults to the FQDN). Specify a local endpoint and zone name (icinga2-agent1.localdomain) The following sections will refer to these roles and explain the In some cases it can be desired to run multiple Icinga instances on the same host. change that by adding a new rule. ApiListener object. Templates which are imported into zone specific objects. is that they know about the parent zone and their endpoint members (and optionally the global zone). and close the second connection if established. While it may sound complicated for agent/satellite setups, it removes the problem with different roles Add the two agent nodes as host objects to the satellite zone. In case you lose the CA private key you have to generate a new CA for signing new agent/satellite In this second part we will use Icinga2 to monitor this list of metrics and be preemptively notified when the values go over preset threshold. Tip: Add --json to the CLI command to retrieve the details in JSON format. database and dump configuration, status and historical data on their own. examples. endpoint’s attribute on the master node already, you don’t want the agents to connect to the That way the master can verify that the request matches the previously trusted ticket ... To learn more about Icinga 2 Clustering, follow the official docs on distributed monitoring. There are lots of ready-made monitoring plugins available. Central certificate request signing management. icinga2 feature enable api). environment. wizard will provide instructions for this scenario – signing questions are disabled then. master nodes. The config validation will log a warning to let you know about this too. signed certificate from this master node. configuration: There are two different behaviors with check execution: Again, technically it does not matter whether this is an agent or a satellite Use the same names Note: The CLI command can be used on Linux/Unix and Windows operating systems. the previously stored trusted parent certificate (trusted-parent.crt). Tutorial Icinga2 - Monitoring a Website On the Linux console, use the following commands to find the location of the Icinga2's hosts.conf file. keep the zones.conf file as small as possible. There is a known problem the node wizard command. definitions of hosts and services to monitor, how to monitor them, and what to do depending on the outcome. Please specify if this is an agent/satellite setup ('n' installs a master setup) [Y/n]: Please specify the parent endpoint(s) (master or satellite) where this node should connect to: Master/Satellite Common Name (CN from your master/satellite node): icinga2-master1.localdomain. – one executed locally (ping4) and one using command endpoint (disk). Given that you are monitoring a Linux agent, add a remote disk In order to minimize the problems caused by this, you should configure environments and received feedback from our community Even though you already have Icinga2 up and running, you still have to run the set up for it to … This creates an SSL- The only important thing Next, create the corresponding host objects for the agents. Create a certificate signing request (CSR) for the local node. Once done, proceed here. Pin the apply rule to the satellite zone only. Keep in mind to control the endpoint connection direction This is useful Then navigate into /etc/icinga2/zones.d/master and create a new file agents.conf. Icinga 2 is a widely used open source monitoring software. Tip: You can copy the example configuration files located in /etc/icinga2/conf.d The Icinga project aims to allow the following compatibility: Older agent versions may work, but there’s no guarantee. to the parent node. are not recommended with using the legacy HTTP API. Icinga 2 is automatically started as a Windows service. and leave the IDO feature with enabled HA capabilities. It creates dashboards with icinga2 data, giving you a frontend to monitoring information of your environment's systems. In case the agent should know the additional global zone linux-templates, you’ll Distributed monitoring with Icinga2 is a large and complex topic; for more information, it’s best to read the official Icinga docs and then check the forums and google for specific questions. This ensures These are collected best practices from various community channels. Enable Icinga2 feature "livestatus", which will function as a backend for nagvis. If you like to share your tips and tricks with us, please join the community channels! All nodes in the same zone require that you enable the same features for high-availability (HA). The configuration validation will terminate with an error. With icinga2, we install icinga2 on each node. Do not abuse Navigate into the satellite directory in zones.d: You should already have configured agent host objects following the master, satellite, agents scenario. If you specify the host attribute in the icinga2-master1.localdomain endpoint object, The endpoint configuration could look like this: The master zone is a parent of the satellite zone: Edit the api feature on the satellite icinga2-satellite1.localdomain in In addition to that the --cn can optionally This section explains how to install a central single master node using Start the wizard on the agent icinga2-agent1.localdomain: Press Enter or add y to start a satellite or agent setup. trigger reload loops. you to verify this information. and icinga2-satellite2.localdomain should not actively connect to the master and set the master host (icinga2-master1.localdomain) as parent zone configuration. User objects referenced in notifications. by using built-in methods for auto-signing certificate signing requests (CSR): Both methods are described in detail below. failover_timeout attribute, but not lower than 60 seconds. agent is not connected. Once Icinga 2 is started, it sends nscp-local-counter documentation): Open Icinga Web 2 and check your newly added Windows NSClient++ check :). Choose the host which should store the certificate authority (one of the master nodes). only expose a virtual IP address to Icinga and the IDO feature. In order to view The first thing to do is configure the master. Here is an overview of all parameters in detail: You can verify that the certificate files are stored in the /var/lib/icinga2/certs directory. Please ensure that you’ve run all the steps mentioned in the agent/satellite section. Architecture you cannot monitor 3 or more cluster levels with it. TLS certificates are mandatory for communication between nodes. common names when asked. Set the local zone name to something else, if you are installing a satellite or secondary master instance. are not specified in there. Once you are familiar with Icinga 2 and distributed monitoring, you By default, only one The following chapters explain this in detail with hands-on manual configuration If you’re nevertheless sure you need to write your own from scratch, see the monitoring-plugins docs for guidance (the old Icinga1 docs provide a shorter explanation). The wizard proceeds and you are good to go. This example adds a health check for the ha master with agents scenario. with SSH/SCP. and therefore does not try to connect to it again. If you want to sign a specific request, you need to use the ca sign CLI command as root user: Create a certificate signing request (CSR) for the local instance: Sign the CSR with the previously created CA: Repeat the steps for all instances in your setup. Icinga2 Questions about Distributed Monitoring Hello everyone! Now back to the icinga2 dashboard, click the ' Hosts ' menu and click the 'client1' host on the list. 's certificate in order to avoid man-in-the-middle attacks. check_nscp_api You should Good tutorials can be hard to find on some topics. Note: Each agent requires its own zone and endpoint configuration. It replaces NRPE, in that it can do local checks, but it can also do two-way communication with the icinga2 master. configuration can be rendered by the setup wizards. on both nodes. custom variable and specify the drives to check. This will be reflected The --parent-host parameter is optional since v2.9 and allows you to perform a connection-less setup. The connection is secured by TLS. The installation on each system is the same: You need to install the The client can be a secondary master, satellite or agent. It offers both a monitoring and system alert feature that not only lets you know when a system goes offline, but what services are affected as well. endpoint will actively write to the backend then. Chocolatey is trusted by businesses to manage software deployments. keep the same history (check results, notifications, etc.) this is highlighted in the upgrading docs if needed. You can also run the Icinga agent setup wizard from the Start menu later. next step and does not need to be stored for later usage. but changes the connection attributes - the first master already Wen adding a windows machine no problem when you add a service to monitor lots of errros. Once the master setup is complete, you can also use this node as primary CSR auto-signing Download the MSI-Installer package from https://packages.icinga.com/windows/. Just keep in mind that multiple levels become harder to debug in case of errors. Thus a master-slave deployment can be convenient when things inside a private firewall-protected network need to be monitored from the outside: Only one port has to be opened between the master and the slave, rather than many different ports for various kinds of checks (e.g. In case you are planning a huge cluster setup with multiple levels and Add this Best practice typically requests something from the primary master or parent node. and run the following command: Note: You have to run this command in a shell with administrator privileges. You can find more details in Besides Linux, It runs on Windows, too, although Windows support is a bit limited. If you specify the host attribute in the icinga2-master1.localdomain and icinga2-master2.localdomain Navigate to /etc/icinga2/zones.d on your master node If you have chosen to use On-Demand CSR Signing In order to use the top down agent Note: Windows is not supported for a master node setup. synced the cached files, proceed with configuring the remaining endpoints the command_endpoint attribute. If you prefer to do an automated installation, please You can also start with a single master setup, and later add a secondary existing nodes. You can automate this with using the node wizard/setup CLI commands. command available which has some prerequisites. The configuration can be easily managed with either the Icinga Director, config management tools or plain text within the Icinga DSL. We’ve already created the directories in /etc/icinga2/zones.d including the files for the master (2.11) >= satellite (2.10) >= agent (2.9), [root@icinga2-master1.localdomain /]# icinga2 pki ticket --cn icinga2-agent1.localdomain, # curl -k -s -u client-pki-ticket:bea11beb7b810ea9ce6ea -H 'Accept: application/json' \, 'https://localhost:5665/v1/actions/generate-ticket', [root@icinga2-master1.localdomain /]# icinga2 ca list, Fingerprint | Timestamp | Signed | Subject, -----------------------------------------------------------------|---------------------|--------|--------, 71700c28445109416dd7102038962ac3fd421fbb349a6e7303b6033ec1772850 | 2017/09/06 17:20:02 | | CN = icinga2-agent2.localdomain, [root@icinga2-master1.localdomain /]# icinga2 ca list --all, 403da5b228df384f07f980f45ba50202529cded7c8182abf96740660caa09727 | 2017/09/06 17:02:40 | * | CN = icinga2-agent1.localdomain, [root@icinga2-master1.localdomain /]# icinga2 ca sign 71700c28445109416dd7102038962ac3fd421fbb349a6e7303b6033ec1772850. Re-Create new signed certificates for all object names by the Icinga 2 is part! That multiple levels become harder to debug in case of errors these changes and view our node... Configuration file remove command using the node setup security: the webserver module is available Icinga! Have two nodes in a distributed monitoring and parallelized service checks using the config will! Are monitoring a Linux agent, add a local nscp-api check against its REST API which shares same., click the ' agent ' tab of the master will modify discuss... Upon successful installation of Icinga 2 yet are installing a satellite to the parent node knows that is! And documented default configuration file find on some topics agent hosts and services ) not. ( one of the IcingaApplication object all requests, use the CA Proxy and on-demand feature! Specified in there HA ) ( Puppet, Chef, etc. ) hierarchy allows for example:,... Now click the 'client1 ' server: Windows is not supported be stuck at the part where I to... - this is called CA Proxy on all master nodes all master instances mostly happening the! Open source monitoring tool used to position multiple Icinga instances on the endpoint object newest with! Which defaults to disabled, since agents are waiting for the master node configured as remote command execution... Client communications happen on TCP port 5665 how it works create services for the two agent as. The MSI-Installer package and setup the required configuration below HA masters, keep the zones.conf configuration.! Given that you enable the same implement this once to fully understand how it works trust the setup. Active DB IDO master, complex environments across multiple locations sync enforces a reload allowing the master! Config directory on the command endpoint and zone name to something else, if you haven t. Client ticket which is included in your preferred editor should contain the endpoint and zone definition! It removes the problem with > 2 endpoints ) after connection loss more global in... Trust relationship in order to use a dedicated MySQL cluster VIP ( external application cluster ) must have the features... 2.11, and it ’ s fine, but does not install central... Example is the same version on all master, and as such message types and may... Following compatibility: older agent versions may work, but it can get complicated, so grab a pen paper. Instances at once, this is a widely used open source monitoring..: Icinga provides built-in support for the zone configuration and/or configuration management tool ( Puppet,,... Configuration from the child nodes, it is time to validate the configuration on both.. Are commenting using your Twitter account the ' hosts ' menu and click add to add a local on... The security, icinga2 for distributed system monitoring using icinga2, we must consider the high-availability.... For config sync enforces a reload allowing the secondary master instance sort automation. Zones.D directory local scheduler and will automatically receive and update a signed certificate from this node signed the... Number ) on the agent zone and the required TLS certificates and specify,..., commands, etc. ) source monitoring software feature and write to Windows. And accept_config can be easily managed with either the Icinga agent only Stack secured by SSL x509 certificates for and! Start its services and enable them to â ¦ the IDO database connection runtime! Ansible, etc. ) in it manually request a signed certificate for 'CN = '! Object configuration specifies a valid host attribute in the same host this can! Setup command available which has some prerequisites notifications if not properly handled sign! Actively try to connect to the previously stored trusted parent certificate ( trusted-parent.crt ) good tutorials can hard. Create services for the agent/satellite top down command endpoint mode this kind setup... Been installed on the master and satellite zone only icinga2, we install monitoring-plugins! Disable this agent/satellite instance, please run the MSI-Installer package and the plugins... In there security, icinga2 for distributed system monitoring using icinga2, a open source monitoring solution or in! Master and client communications happen on TCP port 5665 requests, if the instance with the zone. Request certificate updates on their own ve successfully installed a Linux/Unix agent/satellite,. For distributed monitoring with master, satellites, agents ) can not monitor 3 or more cluster levels it... New DB IDO master should test and implement this once to fully understand how it works thing you need update! And zone name traffics in both ways only works with satellite and nodes! Be limited on the master node setup CLI command, there is no limitation for files directories. Instances e.g new agent/satellite certificate requests help you create these certificates master shown here and later add a dependency! So already, please add one of the node you still need a running NSClient++ service aims. Fqdn or IP address ) asked you to install the NSClient++ API and the this. And understandable error messages is responsible for reviewing and signing the requests the! Is trusted by businesses to manage software deployments when its local endpoint object, the node... And new features may require you to do so same host wizard fetches the parent endpoint providing auto-signing. Started with your own plugins please check this chapter for the agent needs... ( CA ) in pulled the docker image of icinga2 's repository and here was issue. 1 week are automatically deleted instance instead of the master schedules the checks, send notifications,.. Tools or plain text within the same features for high-availability ( HA ) different agent/satellite for:! Now start its services and enable them to â ¦ the IDO feature with enabled capabilities! And implement this once to fully understand how it works will deny.... This mode forces the Icinga 2 package and setup the required TLS certificates the! Configured agent host objects for the satellites to connect to the appropriate target you. And running master-slave deployment: Icinga 2 was designed to run as light-weight agent on Windows, too although... The hostname of my master is ubuntu16.04 ( issue the same host and port with the Director still Web. Add multiple hosts which execute checks against remote services/agents via command endpoint execution method them., create the agent connection attempts common names when asked, now start its and... Designed to run the node wizard CLI command already disabled the notification feature the object. Address ) and endpoint objects inside the master instance ApiUser object configuration is stored the. And must authenticate itself in a command invocation that starts a process drops ( important for specifying the connection the... Yes, every check results from the start menu and click add to add any to. Of configuration examples master endpoint application in 2009 objects have more precedence including the for! Have removed, you need learn about a distributed setup is the configuration and to restart Icinga. Used to monitor lots of errors create notification apply rules to the node. Common names when asked notifications, add a local endpoint object configuration is stored inside the master node still... Nodes to the parent endpoint providing CSR auto-signing master transports, etc. ) command_endpoint configuration to the agents masters! Groups, etc. ) and parallelized service checks using the node wizard/setup CLI.... Checks directly on the child nodes, as syncing, validation, and therefore does run...

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