Follow Up: struct sockaddr storage initialization by network format-string, Identify those arcade games from a 1983 Brazilian music video. These types of checks are called Active Checks. See the HTML : 45 The Nagios server is running on Ubuntu. Nagios will still handle all notifications, event handlers, and dependencies between hosts and services. You might also want to give the 'capture' plugin a try. The Nagios Service Check Acceptor (NSCA ) addon has historically been the addon of choice for Nagios administrators that need to establish data feeds or passive check transmission between Nagios installations. Passive checks require all the logic related to what should be reported and when it should be checked to be put in an external application. For example, a plugin which returns a WARNING state will cause a service to have a WARNING state. The application can also periodically let Nagios know if it succeeded in using the database without problems. use generic-service ; Name of service template to use When defining and testing new services in nagios I have been restarting nagios, then clicking the service, and rescheduling a check for as soon as possible, then waiting until the check happens. It is possible to configure Nagios so that it will receive status information sent over a command pipe. Once the host and services are configured on Nagios, checks are used to see if the hosts and services are working as they are supposed to or not. In such cases, Nagios decides when a check is to be performed, runs the check and stores the result. Nagios server in this example is hosted on 192.168..150 and an example client is hosted on IP 192.168..200 Exit Codes To identify the status of a monitored service, Nagios runs a check nagios.cfg. It is a protocol that is used in reverse of the other common Nagios protocol NRPE. Viewed 12725 times since Tue, Nov 14, 2017, Viewed 18667 times since Tue, Nov 28, 2017, Viewed 70502 times since Thu, Nov 9, 2017, Viewed 9709 times since Tue, Nov 14, 2017, Viewed 12197 times since Wed, Nov 29, 2017, Viewed 47389 times since Thu, Nov 9, 2017, Viewed 14647 times since Sun, Nov 26, 2017, Viewed 42173 times since Mon, Nov 13, 2017, Viewed 18034 times since Wed, Nov 15, 2017, Viewed 22586 times since Sun, Nov 26, 2017. Enjoy unlimited access on 5500+ Hand Picked Quality Video Courses. - specific URL support - ssl option - alternative port - fake user agent - proxy as parameter - proxy from environment variable Usage: check_website [OPTIONS] {HOSTNAME} {HOSTNAME} host to check (dns/ip) [OPTIONS]: It looks like that with the default install, theres no configuration set up to tell Icinga where to look for the check_http executable. The following file can be modified to do the job. If you would like to disable passive checks for just a few hosts or services, use the passive_checks_enabled directive in the host and/or service definitions to do so. To turn on everything you want to set debug_level=4095. Do whatever you want with a Deploying Nagios Monitoring Services on Secured Red Hat Enterprise Linux 3 Environment: fill, sign, print and send online instantly. The following screenshot shows a complete overview of all the service checks that have been configured so far. In the Select resource macro: section, select USER1. 1. Default is 10 seconds. NPCA includes a service module that can check if a service is running. debug_level=2048 With nagios in debug mode I simply tail the debug_log file debug_file=/var/log/nagios3/nagios.debug. In such a case, adding a module that reports current utilization along with the OK/WARNING/CRITICAL state to Nagios seems much easier than using active checks for the same job. If you preorder a special airline meal (e.g. can nagios adjust its check time based on the status info? These will come through as an Unconfigured Object initially because Nagios XI has never received a Passive check result for this host/service. In order to be able to submit passive check results, we need to configure Nagios to allow the sending of passive check results, and set the host objects to accept them. Also, MySQL would not let just any host to connect to it. However, applications on remote hosts can't do this so easily. For those unfamiliar with Nagios, it is a monitoring system which can execute checks. The __HOST__ is a special service name, which represents the host check in Nagios. debug_level=2048 With nagios in debug mode I simply tail the debug_log file debug_file=/var/log/nagios3/nagios.debug. With a little tweaking, Nagios can help monitor this application port as well. Passive checks are performed by external processes and the results are given back to Nagios for processing. The next parameter specifies the number of seconds after which Nagios should consider the results to be out of date. I've # provided some comments here, but things may not be so clear without further # explanation, so make sure to read the HTML documentation! >Mainly Focus on Kafka and Cloudera services, Cluster . Note: A service must be defined in Nagios before you can submit passive check results for it! If I used the first method, I have to keep separate site.pp for each environment. By default you do not need to change any of the lines in this file and . It says Unknown option specified in config file , check_http -I 10.0.0.76 -p 8192 url=/MYServiceBus/ post= eregi=.Status_Code.0./Status_Code. Here is my configuration : In order to make Nagios treat passive host check results in the same way as active check results, we need to enable the following option: By default, Nagios treats host results from passive checks as hard results. Nagios: Simple Oracle Check. Related Commands. thank you! Host is just like a computer; it can be a physical device or virtual. In order to allow remote hosts to send passive check results to the monitoring host, I've developed the NSCA addon. Hi, thanks for your comment. Format is minimum:maximum, Response time in seconds for warning state, Response time in seconds for critical state, Number of seconds to wait before connection times out. Would you please be so kind as to help me? Submitting Passive Check Results From Remote Hosts. As a Cloudera Administrator and Kafka service owner, leading Kafka/flume/ZK services in WAP (Multi DC Environment), Leading TICK Stack (Influxdb) and Grafana along with Administration of ELK Stack (Elasticsearch, Logstash) and Cloudera Clusters with CI/CD approach, Automation. The module can only check if the service is started, you could however use the negate plugin to invert the returned result from the plugin (hence making CRITICAL an OK state). Nagios, the Nagios logo, and Nagios graphics are the servicemarks, trademarks, or registered trademarks owned by Nagios Enterprises. }. The scripts stored in /etc/nagios-plugins/config/ can shed some light on the awesome capabilities of Nagios. Does a summoned creature play immediately after being summoned by a ready action? These checks help ensure that the dependency logic is as accurate as possible. If up-to-date information has been provided by a passive check during this period, then it will not perform active checks. 1 check_http -p 8083 - user4556274 Jul 29, 2016 at 12:49 Add a comment 3 Answers Sorted by: 3 You can specify the port number directly in the command but you will must create one command per tested port. This increases the security of the database. The check_ncpa.py plugin enables Nagios to monitor the installed NCPAs on the hosts. Each server runs one or more common services. It also defines Nagios user and group under which Nagios instance is running. Using Python Automation to interact with network devices [Tutorial], OpenCV: Detecting Edges, Lines, and Shapes. When new information regarding a service gets passed to Nagios via the external commands pipe, Nagios treats it the same way as if it had been received by an active check. As mentioned earlier, Nagios can forgo the actual execution of an on-demand service check if it can use the cached results from a relatively recent service check. Nagios check_by_ssh returns status 3 even though running the command manually works? Now in your configuration for checks for a host you can create the following service check. Even the location of the plugins directory is in there. 2. The script should then post results to the Nagios daemon. Please note that this article is published by Xmodulo.com under a Creative Commons Attribution-ShareAlike 3.0 Unported License. NPCA allows you to check multiple services, here is an example that checks for some services that are running and some that are stopped. Cached checks will only provide a performance increase if you are making use of service dependencies. this is THE MOST comprehensive and straight forward turorial I've seen. These are examples of the graphs that can be created and embedded using the graph generator in the Graphs tab. Can I tell police to wait and call a lawyer when served with a search warrant? 13. check_http plugin is used to verify the status of HTTP server (or HTTPS) that is running on a remote host. The plugins can be in any language, Nagios only cares They can be the following: 0: OK Learn more. # Plugin commands (service and host check commands) # Arguments are likely to change between different . Check WMI Plus allows you to check multiple services, here is an example that checks for two services that are running. . And in Puppet agent, I have to define the environment (Dev, Test or Prod). I wouldn't leave this setting on normally though, it is very verbose and fills your log file at a rapid rate. This is because, very often, passive checks are used to report host and service statuses from other Nagios instances. Minimum number of days a SSL certiface must be valid. The object needs to have the passive_checks_enabled option set to 1 for Nagios to accept passive check results over the command pipe. A good example would be a server that is a part of an application, processing job queues using a database. On the next screen: Enter a unique name in the Command Name field (suggest one is check_host_cluster and the other check_service_cluster) Append --host to the Command Line section for host . To figure this out I set nagios into debug mode with the configuration like this. In order to use them, the host needs to be configured to accept passive checks results. If the remote server runs only HTTP and not HTTPS, youll get HTTP CRITICAL Unable to open TCP socket message as shown below. If you want Nagios to treat all passive check results for hosts as if they were soft results, you need to enable the following option in the main Nagios configuration file: Passive service checks are very similar to passive host checks. Do not wait for whole document body to download. You know the basics on Nagios administration. See Also: Active Checks, Host Checks, Check Scheduling, Predictive Dependency Checks. Add additional tags that should be sent in the HTTP header. 28. Service - Started Check to see if a service is started. The plugin returns a CRITICAL state if the service is not started. Plugin then gets executed on the remote machine where is collects the required information and sends then back to Nagios daemon.