Keywords: Supervision, Icinga, Nagios, Linux

Introduction to Icinga-Web
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## Introduction to Icinga-Web

Overview

This introduction takes you on a short tour showing some aspects of Icinga-Web. It is not complete so there will be things which aren't covered. We're working on this.

Due to constant development some things change over time resulting in different appearance and additional options. Please have a look at the current version 1.7.

### Introduction to Icinga-Web (>= 1.7.x)

If you followed the quickstart guides (IDOUtils and Icinga-Web) then please open your browser and enter http://<icinga server>/icinga-web. You will get the login screen

Figure 6.1. Icinga-Web login screen

You should be able to login using "root" and "password". This will take you to an overview page showing the state of the hosts and services being monitored

Figure 6.2. Icinga-Web overview

Top menu

The top menu consists of general information about Icinga and the administration items for users, groups, logs, and tasks. The live-search is accessible using the field next to the magnifying glass. On the top right, you can see the user currently logged in and edit its preferences or log out of Icinga Web.

Figure 6.3. Icinga-Web top menu

Search

The search form shows results while typing. The results will be shown in a separate inlay window. By clicking/selecting the results, a new tab in the main view opens with more information. The search starts at the beginning of the string but you can use wildcards as well.

Figure 6.4. Icinga-Web live search

Status Cronk

The status cronk shows host and service counters for their respective states. If count is zero, the colour remains grey. Clicking on states opens a new tab in the main view showing the selected state only. Next to that, the number and state of the Icinga instances is shown. In the remaining space general process information is provided, just as

- Hosts|Services (active/passive)

- Host|Service execution time (min/avg/max)

- Host|Services latency (min/avg/max)

Figure 6.5. Icinga-Web status cronk

Left menu

In the left (also hideable) menu you can select among different widgets (we call them "cronks"). You can either doubleclick on each cronk or drag it with the cursor into the main view. The categories are separated into

- Figure 6.6. Icinga-Web data cronks

- "Tactical Overview" keeps general charts and customized ones (custom variables)

  Figure 6.7. Icinga-Web tactical overview cronks

- "Reporting" enables to create reports

  Figure 6.8. Icinga-Web reporting cronk

- "Misc" contains several useful cronks, just as iframes for external websites or the 1,2,3 columns for main view and links to the documentation.

  Figure 6.9. Icinga-Web misc cronks

Main Screen

This is where everything comes together: You can drag and drop new windows over here resulting in a new opened tab. The views are customizable for the current user (they remain persistent) by dragging the column heading to the new place. Rightclicking on the heading allows to change the sort order or to hide columns.

Figure 6.10. Icinga-Web main screen

Host Status

The HostStatus view shows the host status and below the number of warnings/critical of the services attached to the host.

Figure 6.11. Icinga-Web host status

Service Status

The ServiceStatus view shows all services for each host.

Figure 6.12. Icinga-Web service status

Hostgroup Status

The hostgroup view will show the status and the number of hosts grouped by hostgroup.

Figure 6.13. Icinga-Web hostgroup status

Log

The log view shows the log messages.

Figure 6.14. Icinga-Web log

Cronks and Views

Icinga Web allows to open different cronks in order to view data, set filters for different views, send commands. The following list summarizes the possibilities in general (several cronks can provide more, like sending commands).

Figure 6.15. Icinga-Web cronk bar

- Manual Refresh

- Settings

  Enable/Disable Auto-Refresh

  Get this <item> by url

Figure 6.16. Icinga-Web cronk bar

- Filter

  Modify/Remove

Commands

There are different commands available (check the chapter External Commands for more information on commands). Select the items which should be affected and then select the command to be executed.

Host Commands Figure 6.17. Icinga-Web host commands | Service Commands Figure 6.18. Icinga-Web service commands

Filters

Icinga Web allows to set filters and create customized views which can be saved as own persistent cronks, too. First, select "Filter" and "Modify". Add a restriction selected from the dropdown menu (this differs for various cronks). You can set more restrictions by repeating this procedure.

Figure 6.19. Icinga-Web filter restriction

Afterwards, specify on which condition the filter should match on the selected restriction (contain, does not contain, is, is not) and add a value into the form. Proposals are shown while you are typing.

Figure 6.20. Icinga-Web filter condition

Apply the filter to the current cronk. If needed, you can modify the filter afterwards and add/remove restrictions and conditions. An active filter is marked red.

Figure 6.21. Icinga-Web filter active

Administration

Enter the administration panel by selecting "Admin" from the top menu, and select "Users", "Groups", "Logs", or "Tasks".

Figure 6.22. Icinga-Web top menu admin

Users

You can add, remove and edit users.

Figure 6.23. Icinga-Web user admin

Doubleclick a user to open a new inlay window which lets you edit very detailed options. The same options apply when adding a new user. You can modify the size by dragging the cursor in the corners.

- General information

- Change password (and optional AuthKey for API)

- Permissions e.g. which group membership

- Principals for special roles

Figure 6.24. Icinga-Web edit user

Roles

You can add, remove and edit roles. You can also modify role inheritance within the group tree in the lower half.

Figure 6.25. Icinga-Web group admin

Doubleclick a role to activate the window on the right side which lets you edit very detailed options (see below). The same options apply when adding a new role. You can modify the size by dragging the cursor in the corners.

Figure 6.26. Icinga-Web groups

Logs

You can view several logs here, in order to catch up on possible errors.

Figure 6.27. Icinga-Web logs

Tasks

Several changes require clearing the cache. Instead of using the command line you can issue the command via the "Tasks" menu.

Figure 6.28. Icinga-Web Tasks

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