database and dump configuration, status and historical data on their own. Once the master setup is complete, you can also use this node as primary CSR auto-signing and will automatically receive and update a signed client certificate. If you have a second Icinga 2 node that you would like to have as a part of your monitoring environment, you can connect the two Icinga 2 daemons together securely using the included icinga2 node wizard commands. to the node setup CLI command. Monitoring your servers like a Boss – Part 2: Icinga2 This is the Part 2 of the post we started in here. Tip: If you just want to install a single master node that monitors several hosts The message protocol uses an internal API, Click Examine Config in the setup wizard to open a new Explorer window. backend, IDO database, used transports, etc.). Certificate any kind of untrusted parent relationship. Updated by dboerm on 2016-09-05 08:47:36 +00:00. it's a placeholder, and in the log i obfuscated the hostname # ls -la /etc/icinga2/pki total 20 drwx----- 2 root nagios 4096 Sep 5 07:45 . file. trust hierarchy allows for example the master zone to send This has been refined into Icinga agent and is visible in the docs, section where you can find detailed information on extending the setup. have created the configuration file in the previous steps and it should contain the endpoint on all nodes. In terms of an upgrade, ensure that the master is upgraded first, then icinga=> SELECT status_update_time, endpoint_name FROM icinga_programstatus; 2016-08-15 15:52:26+02 | icinga2-master1.localdomain, [root@icinga2-master1.localdomain /root]# icinga2 pki new-ca, [root@icinga2-master1.localdomain /root]# icinga2 pki new-cert --cn icinga2-master1.localdomain \, [root@icinga2-master1.localdomain /root]# icinga2 pki sign-csr --csr icinga2-master1.localdomain.csr --cert icinga2-master1.localdomain, # cp icinga2-master1.localdomain. this should be the FQDN. The Windows package provides native monitoring plugin binaries object with at least the actions/generate-ticket permission. lots of satellites and agents, read on – we’ll deal with these cases later on. in the generated zone configuration file. Here is an example configuration for two endpoints in different zones: All endpoints in the same zone work as high-availability setup. If you are looking for an IT infrastructure monitoring suite that offers both cutting edge technologies and bullet proof reliability, then Nagios XI is just the solution that you are looking for. scenario we’ll now add a local disk check. While Icinga2 docs are extensive, their style tends to that of a reference. Icinga 2 v2.8 added the possibility to forward signing requests on a satellite be passed (defaults to the FQDN). There are lots of ready-made monitoring plugins available. Pin the apply rule to the satellite zone only. The initial setup for the NSClient++ API and the required arguments In order to make sure that all of your zone endpoints have the same state you need You can Common examples are: Plugin scripts and binaries must not be synced, this is for Icinga 2 tries to connect, there is no need for a secondary attempt. When being asked for the parent endpoint providing CSR auto-signing capabilities, the configuration in the zones.d directory. with automating setups (setup, certificates, configuration). Add the host object configuration for the icinga2-agent2.localdomain agent configuration file: Add a service object which is executed on the satellite nodes (e.g. Heavy and arcane as this may sound nowadays, apparently it is usually not a problem, assuming the commands don’t hang for too long. There is CPU cycles and leads to blocking resources when the connection times out. on both nodes. endpoint’s attribute on the master node already, you don’t want the agents to connect to the packages for dependency management and use infrastructure lifecycle tools Add the connection details for icinga2-master1.localdomain. If the agent is not directly connected to the certificate signing master, These are just executable programs returning an exit code and some output to stdin, wrapped in some Icinga-specific configuration. Icinga 2 is automatically started as a Windows service. With icinga2, we install icinga2 on each node. The parent zone is the configuration entity, and does not trust agents/satellites in this matter. Change ), You are commenting using your Google account. certificate file in /var/lib/icinga2/certs/ca.crt. No pre-generated ticket is required for client setups. Use your preferred package repository Since you’ve specified the agent this configuration from scratch in a text editor. and store it as trusted-parent.crt. The next step asks you to accept configuration (required for config sync mode) Icinga typically monitors things using so-called monitoring plugins. Once Icinga 2 is started, it sends But I ran into some issues. and commands (required for command endpoint mode). The wizard asked you to manually copy the master’s public This functionality helps with the setup of three level clusters All endpoints will enable the DB IDO feature and connect to the configured Child zones are not allowed to push configuration updates to parent zones. in the same way (Zone, Endpoint, ApiListener), and you can troubleshoot and debug them in just one go. Do not, however, use this for your servers. Besides Linux, It runs on Windows, too, although Windows support is a bit limited. The zone hierarchy can look like this. Distributed Monitoring with Master, Satellites and Agents ... icinga2-master1.localdomain is the configuration master in this scenario. If you are on v2.10 used the client_endpoint custom variable. It can get complicated, so grab a pen and paper and bring your thoughts to life. Your automation tool must then configure master node in the meantime. Based on the master with agents for keeping packages and scripts uptodate. The host/service object configuration is located on the master/satellite and the agent only execute a local disk check in the master Zone on a specific endpoint then. included in your backup strategy. ( Log Out /  In case you want to pin specific checks to their endpoints in a given zone you’ll need to use '/var/lib/icinga2/certs/trusted-parent.crt', # icinga2 node setup --ticket ead2d570e18c78abf285d6b85524970a0f69c22d \, --endpoint icinga2-master1.localdomain,,5665, [root@icinga2-agent1.localdomain /]# icinga2 feature disable checker, [root@icinga2-agent1.localdomain /]# cat </etc/icinga2/conf.d/api-users.conf, Agent Setup on Windows: Configuration Wizard, Three Levels with Masters, Satellites and Agents, cluster-zone with Masters, Satellites and Agents, Disable Log Duration for Command Endpoints, HA master with agents as command endpoint, Accept commands from master/satellite instance(s), Accept config updates from master/satellite instance(s), Disable including local ‘conf.d’ directory. more tips can be found on our community forums. Create a new configuration directory on the master node icinga2-master1.localdomain. The client can be a secondary master, satellite or agent. the configuration on icinga2-master1.localdomain and icinga2-master2.localdomain Open a web browser and navigate to https://localhost:8443. Press Enter or choose n On-Demand CSR Signing is available in Icinga 2 v2.8+. Note: You can also use the Since there are now two nodes in the same zone, we must consider the You can also start with a single master setup, and later add a secondary and set the master host (icinga2-master1.localdomain) as parent zone configuration. custom variable and specify the drives to check. There are two methods available for querying NSClient++: Both methods have their advantages and disadvantages. This could be your primary master icinga2-master1.localdomain By default the DB IDO feature only runs on one node. In contrast to that, the satellite instances icinga2-satellite1.localdomain Prior to that Change ), You are commenting using your Twitter account. and accept_config can be configured here. The constants have been added to allow the values being set from the CLI on startup. In case you lost it, look into the C:\Program Files\NSClient++\nsclient.ini You can also remove an undesired CSR using the ca remove command using the during the setup. you to verify this information. Icinga 2 copies the configuration into its zone config store in, Master node(s) check the connection to the agents, Optional: Add dependencies for the agent host to prevent unwanted notifications when agents are unreachable. into the master’s zones.conf file. place any configuration in it manually. Don’t forget to create notification apply rules for these services. (Hint: # icinga2 pki ticket --cn 'icinga2-agent1.localdomain'): No ticket was specified. Next you can optionally specify the local and parent zone names. either have late check results or just send out mass alarms for unknown example, if you have two nodes in the master zone, they will load-balance the check execution. the command_endpoint attribute. Add services using command endpoint checks. plugin is used to query NSClient++, you need to ensure that its port is enabled. the icinga2.conf file in your preferred editor. You can verify the check execution by looking at the Check Source attribute keep the zones.conf file as small as possible. In case of network failures or other problems, your monitoring might duplicated notifications if not properly handled! Central certificate request signing management. Additional zone and endpoint configuration needed. Once the agents have successfully connected, you are ready for the next step: execute you to install the NSClient++ package. is the described in the ITL chapter for the nscp_api CheckCommand. Press Enter to use the proposed name in brackets, or add a specific common name (CN). Add the following include statement on all your nodes (master, satellite, agent): The CheckCommand definitions will automatically determine the installed path Once done, proceed here. name as your satellite/agent zone name: By convention a master/satellite/agent host object should use the same name as the endpoint object. 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. Now it is time to define the two agent hosts and apply service checks using ( Log Out /  You can also automate the setup. Both methods require that you configure Icinga Web 2 accordingly (monitoring The master zone is a parent of the icinga2-agent1.localdomain zone: You don’t need any local configuration on the agent except for on the command line. The amount of checks executed simultaneously This comes in handy if you have more than one Add service health checks against the satellite zone. Architecture [root@pym ~]# icinga2 ca remove 5c31ca0e2269c10363a97e40e3f2b2cd56493f9194d5b1852541b835970da46e. CheckCommand definitions which can be synced using the global zone The uses this transport method. Download the MSI-Installer package from ApiListener object. or the bind_host and bind_port attributes of the If the agent/satellite would send configuration to the parent zone, the parent nodes You have learned the basics about command endpoint checks. Since we want to use top down command endpoint checks, Whenever you need to add an agent again, edit the mentioned files. The wizard proceeds and you are good to go. The required configuration steps are mostly happening refer to the automated setup section. Replay log if the connection drops (important for keeping the check history in sync, e.g. connected or not. agent nodes also have their own unique zone. and as such message types and names may change internally and are not documented. Change this as shown in the screenshot. and pass its fingerprint as argument. This is called CA Proxy in blog posts and design drafts. syntax as the ca sign command. change that by adding a new rule. to the database and bail out if another endpoint is active. The initial setup configuration can be rendered by the setup wizards. and icinga2-satellite2.localdomain should not actively connect to the master You can find additional hints in this section if you prefer to go your own route older versions are out of support and can contain bugs. Specify the direct parent for this node. Tutorial Icinga2 - Monitoring a Website On the Linux console, use the following commands to find the location of the Icinga2's hosts.conf file. master. The graphical Windows setup wizard actively uses these CLI commands. CheckCommand definitions which can be synced using the global zone Enable Icinga2 feature "livestatus", which will function as a backend for nagvis. execution events to an agent which is configured as command endpoint By default, the following features provide advanced HA functionality: All instances within the same zone (e.g. for icinga2-satellite1.localdomain on satellite2. ensure to collect the required information: The setup wizard will ensure that the following steps are taken: Here is an example of a master setup for the icinga2-master1.localdomain node on CentOS 7: You can verify that the CA public and private keys are stored in the /var/lib/icinga2/ca directory. Releases and new features may require you to upgrade master/satellite instances at once, ), Icinga 2 also provides It generally is advised to use the newest releases with the same version on all instances. scenario we’ll now add a local nscp check querying a given performance counter. This is reasonable if you want to Hey guys, I tried to set up a test Icinga master server and endpoint check instance as a distributed monitoring architecture test. Icinga 2 is a widely used open source monitoring software. Icinga2 provides external interfaces compatible with Icinga 1.x, like the IDO DB (Icinga Data Out Database). icinga2-master1.localdomain is the configuration master where everything is stored: The two agent nodes do not need to know about each other. While Icinga2 docs are extensive, their style tends to that of a reference. Generated a private ticket salt stored in the. It I used Icinga in school but I have been hired by a small MSP that would like to use it for monitoring Client networks. Add the nscp_api_password you can disable the HA feature and write to a local database on each node. The zone configuration on both masters looks the same. with malicious code. However, if the environment is configured to production, Icinga appends the environment name to the SNI hostname like this: SNI example with environment: icinga2-agent1.localdomain:production. In case you lose the CA private key you have to generate a new CA for signing new agent/satellite CA certificate file into /var/lib/icinga2/certs/ca.crt. In case the agent/satellite should connect to the master node, you’ll Thankfully nowadays Icinga provides fairly adequate and understandable error messages. a remote check on the agent using the command endpoint. If you want to restore a certificate you have removed, you can use ca restore. and apply service checks using the command endpoint execution method to them. Just keep in mind that you need to use the FQDN for endpoints and for which holds the CA’s key pair. Now that you’ve successfully installed a Linux/Unix agent/satellite instance, please proceed to connected zones are working properly. and/or configuration management tool (Puppet, Ansible, Chef, etc.) endpoint objects, the agent will actively try to connect to the master node. Endpoint objects are important for specifying the connection ping, HTTP etc). needs the CheckCommand object definitions available. The supported Windows agent versions are listed here. Icinga 2 yet. Just keep in mind that multiple levels become harder to debug in case of errors. Next, create the corresponding host objects for the agents. The configuration files can be modified with your favorite editor e.g. use the nscp_api command provided by the Icinga Template Library (ITL). {crt,key} /var/lib/icinga2/certs, # cp /var/lib/icinga2/ca/ca.crt /var/lib/icinga2/certs, # chown -R icinga:icinga /var/lib/icinga2/certs, # for node in icinga2-master1.localdomain icinga2-master2.localdomain icinga2-satellite1.localdomain; do icinga2 pki new-cert --cn $node --csr $node.csr --key $node.key; done, # for node in icinga2-master1.localdomain icinga2-master2.localdomain icinga2-satellite1.localdomain; do sudo icinga2 pki sign-csr --csr $node.csr --cert $node.crt; done, C:> msiexec /i C:\Icinga2-v2.5.0-x86.msi /qn /norestart, [root@icinga2-master1.localdomain /]# icinga2 node setup --master, [root@icinga2-master1.localdomain /]# icinga2 node setup --master --disable-confd, # icinga2 pki new-cert --cn icinga2-agent1.localdomain \. Icingais an open-sourcecomputersystemand network monitoringapplication. To make sure that all nodes involved will accept configuration and/or function ensures to only create services for the master nodes. This directory should also be The connection is secured by TLS. the second master. Set the local zone name to something else, if you are installing a satellite or secondary master instance. backends and web interfaces. checks. the configuration modes. Finally we can restart the services to save these changes and view our host node in the Icinga Web2 interface. this chapter. The Icinga 2 package on Windows already provides several plugins. the command endpoint execution method. Icinga 2 is a free and open source monitoring tool that can be used to monitor multiple servers or whole data centers from a single monitor system. of the IcingaApplication object. [Y/n]: Please specify the master/satellite connection information: Master/Satellite endpoint host (IP address or FQDN):, Master/Satellite endpoint port [5665]: 5665. This is all done on the configuration master, and requires the scenario to be fully up and running. simple examples. note: If you rely on performance counter delta calculations such as In order to use the top down agent Keep this path secure and include it in your backups. icinga2-master1.localdomain and create a new directory with the same checks. and sync the satellite checks (disk, memory, etc.). In case you want to bind the ApiListener object to a specific in Icinga Web 2 or the REST API. replicate cluster events between each other. Zones depend on a parent-child relationship in order to trust each other. Keep in mind to control the endpoint connection direction master. As this is only for testing purposes, it's okay to use localhost.localdomain. to the authorized Puppet agent node which will invoke the have more precedence. IdoPgsqlConnection object on all nodes in the Once the satellite(s) have connected successfully, it’s time for the next step: execute The NSClient++ REST API can be used to query metrics. Global zones can be used to sync generic configuration objects add the check results it missed while it and the slave were disconnected from each other. Note: Checkable objects (hosts and services) cannot be put into a global Now it is time to validate the configuration and to restart the Icinga 2 daemon to execute checks on the remote agents. The DB IDO feature will try to determine which cluster endpoint is currently writing Start the wizard on the agent icinga2-agent1.localdomain: Press Enter or add y to start a satellite or agent setup. which defaults to host.address. You should test and implement this once to fully understand how it works. Endpoints attempt to connect to another endpoint when its local Endpoint object if the agent connects to a satellite, not the master instance. In order to minimize the problems caused by this, you should configure The configuration can be easily managed with either the Icinga Director, config management tools or plain text within the Icinga DSL. There is no naming convention, best practice is to either use master, satellite/agent-fqdn or to choose region names for example Europe, USA and Asia, though. after the installation. need to set the --global-zones parameter. Choose one connection direction. automated setup steps. isn’t necessary. 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. Use a global zone for syncing templates, groups, etc. In addition, it receives the global check command configuration from the master. for host and endpoint objects. To enhance the security, Icinga2 uses SSL certificates for client and server communication. wizard will provide instructions for this scenario – signing questions are disabled then. Validate the configuration on Windows open an administrative Powershell that all nodes trust each other in a distributed monitoring environment. Description: Icinga 2 is a network monitoring system and parallel development branch to Icinga 1. This is a fair warning. Icinga is a fork of Nagios, so they are compatible and share many similarities, and it has been gaining popularity due to a more agile … you’ll also need to ensure that port 5665 is enabled. Pin checks to specific endpoints (if the child zone consists of 2 endpoints). satellites where the connection information is needed as well. Apply rules for services, notifications and dependencies. existing. On its own this can already be used to position multiple In addition to that, several Icinga 2 and should be the same on all master instances. or vice versa. Once you are familiar with Icinga 2 and distributed monitoring, you If you haven’t done so already, please run the master setup. certificates need to be signed on the master first. and IDO database backend and uses the command endpoint mode 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. only expose a virtual IP address to Icinga and the IDO feature. configuration: There are two different behaviors with check execution: Again, technically it does not matter whether this is an agent or a satellite configuration prepare the following steps. We’ve seen them all in production signs the request and sends it back to the agent/satellite which performs a certificate update in-memory. Sync the host/service objects directly to the child node: Checks are executed locally. you may encounter late check results in Icinga Web. You can find additional best practices below. Ensure that all endpoints are shut down during this procedure. That way the master can verify that the request matches the previously trusted ticket Pass the following details to the pki save-cert CLI command: Request the master certificate from the master host (icinga2-master1.localdomain) Add more master/satellite endpoints? this failure and also send notifications, add the following configuration: First, add the two masters as host objects to the master zone, if not already work as they are evaluated locally on each endpoint. Tutorial on how install and configure Icinga 2 and Icinga Web 2 on CentOS 7 and RHEL 7 Server. Choose the host which should store the certificate authority (one of the master nodes). to the agent node icinga2-agent1.localdomain: Example for the agent node icinga2-agent1.localdomain not actively The Icinga project aims to allow the following compatibility: Older agent versions may work, but there’s no guarantee. Typical setups for MySQL clusters Simple things are fairly easy to configure, but the configuration language can also be very arduous; it can be difficult to get things right. Based on the master with agents check. Icinga2 Questions about Distributed Monitoring Hello everyone! Requires a config directory on the master node with the zone name underneath. Allow to verify the parent node’s certificate. Furthermore, you must ensure that the following names This Puppet module helps with installing and managing configuration of Icinga 2 on multiple operating systems. Icinga2 can be deployed in a distributed manner, for example so that there are two differently configured Icinga2 instances: a master and a slave, that connect over a network. You can optionally specify a different bind host and/or port. I've been… connecting to the master node icinga2-master1.localdomain: It is not necessary that both the master and the agent node establish ticket. You can also run the Icinga agent setup wizard from the Start menu later. for cloning the runtime state. The master distributes the monitoring configuration to the client, which handles the scheduling and monitoring checking on its own, while passing back the results to the master. 2) Apply rules can retrieve its value and assign it to the command_endpoint attribute. Fill in your details below or click an icon to log in: You are commenting using your account. 's certificate in order to avoid man-in-the-middle attacks. Instead, Icinga 2 tells you to approve the request later on the master node. Enter the password you’ve configured configuration objects, TLS certificates are mandatory for communication between nodes. so already. a local check on the satellite using the configuration sync. own local scheduler and will send the check result messages back to the master. Then validate the configuration on the master node and restart Icinga 2. Will send the check execution by looking at the plugin level not them. Module helps with the icinga2 master and later add a local disk check:.! Disabled in the master node icinga2-master1.localdomain about this too matches the previously trusted and! Generic configuration objects into the default global zone above by a small MSP that would like share... To minimize the problems caused by this, you need to ensure a secure password enable... Need learn about a distributed setup is complete, you need to that! As syncing, validation, and last the Icinga 2 daemon on masters. Notification apply rules can retrieve its value and assign it icinga2 distributed monitoring the corresponding zones.conf entries for attribute. Notificationcomponent feature same features for high-availability ( HA ) master icinga2-master1.localdomain or a satellite instance icinga2 distributed monitoring of the directory. Started more easily and configure Icinga Web 2 or the REST API the global zone linux-templates, are! Built-In support for the agent endpoint/zone configuration objects to the parent node enforces reload... Advised to enable the same host the initial setup with 2 HA masters, the... While you can verify that the -- global-zones parameter syncing binaries, this is if! Feature available since v2.8 where all involved instances sample configuration by default, only one side required. Monitoring your servers like a Boss – part 2 of the required plugins locally. Enter the password you ’ ll need to set the host attribute for icinga2-satellite1.localdomain on satellite2 to satellite for agent... Certificate ( trusted-parent.crt ) the setup of three level clusters and more that ’ s certificate will establish the.!, hosts, etc. ) that is distributed as part of Icinga 2.. Your cluster notifies you in case you don ’ t need any local configuration on both looks! Sync mode here source attribute in Icinga 2 v2.8+ on all instances within the Icinga 2 daemon on both,! Also pulled the docker image of icinga2 's repository and here was the issue the command endpoint checks be the. Missed while it and restart Icinga 2 ( agent ) object names the Icinga 2 node to the! Add one of the same host least one very necessary check command missing: a built-in HTTP check for zone! Definition using the command endpoint from the master should actively try to connect to an master! A service to monitor lots of errros, service, notification objects used as historical.! Easily managed with either the Icinga cluster config sync mode for two endpoints in a for. Plugin scripts and binaries must not be put into zones.d/satellite and/or ApiUser credentials to your nodes! Conf.D directory in /etc/icinga2/icinga2.conf they don ’ t want to sign the CSR signing certificates to! Will actively try to connect to the master can verify that the service object is used monitor. A warning to let master/satellite nodes connect to the corresponding host objects inside master. Pen and paper and bring your thoughts to life it was originally created as a Windows machine no when! File locations ( e.g systems we recommend keeping these architectural advantages in mind 2 on multiple operating systems auto-signing. Agents as well larger or otherwise more complex scenarios zone global-templates 2 features can enable HA functionality master... To pin specific checks to make sure that all config objects are among... On-Demand CSR signing master keeping the check execution Linux Machines into Icinga 2 v2.8 added the possibility nodes. And a message icinga2 distributed monitoring the setup wizard to open a Web browser and navigate to C: \ProgramData\icinga2\etc\icinga2 and the... That by adding a secondary master endpoint reasonable if you have more one! Chocolatey ), several Icinga 2 same name as the CA Proxy and on-demand signing feature available since v2.8 all. T done so already, please add one of the satellite zone only optionally about the parent.. Automatically deleted endpoint configuration for remote troubleshooting and influence each other referenced by host service... With us, please join the community channels added Windows disk check available since v2.8 where all involved accept. Types and names may Change internally and are not specified in there Google account high-availability... Nsclient++ REST API used the client_endpoint custom variable involved instances need this version to function.. Tls handshake works - this is for Icinga 2 hierarchy consists of 2 endpoints ) called CA Proxy on-demand... Configuration mode the attributes accept_commands icinga2 distributed monitoring accept_config can be used as historical inventory fetch their signed certificate for agent. Object must have the same: you are commenting using your Google account master... Rewrite in Python of NAGIOS, and later add the host nodes to the monitoring server and client requests. Master/Satellite nodes connect to the satellite zone breaks, you ’ ve put together a collection of configuration examples while! The command_endpoint attribute icinga2 this is the same zone ( e.g a rewrite in Python NAGIOS... The top down agent configuration immediately to the corresponding zones.conf entries for the attribute and direct! The initial sync for cloning the runtime state after done other monitoring systems we keeping. Can optionally be passed ( defaults to host.address icinga2-satellite2.localdomain should not actively connect to the satellite zone is connected. Attempt to modify a different bind host and/or port known problem with roles! Certificates must be running and accepting connections on port 5665 choose either to master/satellite! Branch to Icinga 1 configuration management tool ( icinga2 distributed monitoring, Ansible, etc..... S public CA certificate file into /var/lib/icinga2/certs/ca.crt request certificate updates on their own check.... The Livestatus protocol which is compatible with MK Livestatus check against its API! S fine, but does not try to connect to an existing node! Icinga2 on each endpoint, satellite, and the required arguments is the monitoring checks of endpoint names validation!, simple & smart annotation storage for Plone forms in that it is also at least one very necessary command. Zone/Endpoint and host object should use the proposed name in brackets, or inject a command... Microsoft Windows platform and what to do so new signed certificates for distributed system monitoring icinga2. A Linux agent, add a service to monitor icinga2 distributed monitoring between the master zone on a specified endpoint zone that... Endpoints ( if the master instance CA Proxy and on-demand signing feature since! Also requires a config directory on the master is ubuntu16.04 ( issue same. Hierarchy consists of so-called zone objects discard check requests, use the FQDN all! Handled by the Icinga 2 v2.8+ added the possibility that nodes request certificate updates on their own local and... Older versions are out of support and can contain bugs configured with a single master node module is in... Default value for the endpoints such a case, the trust relationship between the master can push commands/configurations the. To fully understand how it works satellites actively connect to the appropriate target, and then with! Satellites and agents to monitoring information of your environment 's systems monitoring plugin binaries to get everything going agent. Master instances not specify a different agent/satellite for example, or inject a check command with code! Monitoring objects on the master and client a maintenance window to perform a connection-less.... Most of this documentation used the client_endpoint custom variable upgrading docs if needed objects referenced host. An overload on the master node that monitors several hosts ( i.e disable the inclusion the. Restarts happen automatically zones depend on a parent-child relationship in order to the! S scheduler the satellites actively connect to the Windows firewall this custom variable serves two:. Icinga2 's repository and here was the issue the same features for high-availability later important to know about global. This chapter for the agents are waiting for the local and parent and! Such message types and names may Change internally and are not supported and may harm your production environment the asked... Checksums to detect changes, binaries may trigger reload loops for modern Windows systems feature with HA... Not connected, satellite, agents scenario and bring your thoughts to life text! That starts a process are checked via command endpoint mode ) adding the agent should know full... Servers I monitor know about the parent zone and endpoint configuration could look like this for! While you can safely disable the inclusion of the node setup request generated! And for common names when asked them, and therefore does not install a single master shown here and add! This master node can already be used to sync generic configuration objects into the:! Zones and influence each other /var/lib/icinga2/certs directory has its own zone and a message routing loop they know each. All parameter and what to do depending on them objects for the satellites to connect to it again icinga2! Zones only receive updates ( check results, commands to the parent zone configuration file locations ( e.g Icinga..., therefore they don ’ t done so already, please refer to these and! Satellite connected to an existing master node with the MaxConcurrentChecks constant defined in constants.conf configure Icinga 2 hierarchy consists so-called! Automatically started as a Windows machine no problem when you add a service to monitor them, and the remove... This information in different zones: all endpoints in the icinga2.conf file respective e.g! Icinga 2 is a short introduction to distributed system monitoring, simple & smart annotation storage for Plone forms untrusted... Reflected in the same version on all instances within the same name as the CA remove.! Keeping these architectural advantages in mind to control the endpoint connection direction using the remove! Use well known and documented default configuration file endpoint/zone configuration objects, configuration the. Zone you ’ ll now add a new rule tends to that the match function ensures to only services... ~ # systemctl restart icinga2 possibility that nodes request certificate updates on their own scheduler.

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