CheckMK Rail2 Mark I User manual
Check_MK rail2 Mark I - Manual
Valid since version 1.3.19
Contents
1 Quick start guide 1
2 Basic configuration 2
2.1 Network and access configuration via console ............................ 4
2.1.1 Network configuration ....................................... 4
2.1.2 Access to the web interface .................................... 4
2.1.3 Protecting access to the console ................................. 5
2.2 Basic settings on the web interface ................................... 6
3 Administrating monitoring instances 9
3.1 Migrating existing sites .......................................... 11
4 Administrating Check_MK versions 13
5 Firmware installation 14
6 Device settings 15
6.1 Changing the language .......................................... 15
6.2 Changing the network configuration .................................. 15
6.3 Configuring host and domain names .................................. 15
6.4 Configuring name resolution ....................................... 15
6.5 Configuring time synchronisation .................................... 16
6.6 Forwarding syslog entries ......................................... 16
6.7 Changing the default web page ..................................... 16
6.8 Configuring outgoing emails ....................................... 16
6.9 Changing access to Check_MK agents ................................. 17
7 Remote access via SSH 18
7.1 Activating instance login via SSH .................................... 18
7.2 Activating console via SSH ........................................ 18
7.3 Activating root access via SSH ...................................... 19
©Copyright Mathias Kettner GmbH 2018 mathias-kettner.de
CONTENTS CONTENTS
8 Protecting web access via SSL 22
8.1 Installing a certificate ........................................... 22
8.1.1 Creating a new certificate and having it signed ........................ 22
8.1.2 Creating a new certificate and signing it yourself ...................... 23
8.1.3 Uploading existing certificate ................................... 24
8.2 Configuring access types ......................................... 24
8.3 Displaying current configuration/certificates ............................. 25
9 Device control 26
9.1 Restarting / Shutting down ........................................ 26
9.2 Switching on device via Wake-on-LAN ................................. 27
9.3 Restoring factory configuration ..................................... 28
10Backup 29
10.1Automatic backup .............................................. 29
10.2Configuring the backup .......................................... 29
10.3Backup format ................................................ 31
10.4Encryption .................................................. 31
10.5Compression ................................................. 32
10.6Recovery ................................................... 33
10.6.1Disaster recovery .......................................... 34
10.7Monitoring .................................................. 34
10.8Special features with clusters ...................................... 34
11Mounting network file systems 35
11.1Mounting a network file system ..................................... 35
12Failover cluster 37
12.1Prerequisites ................................................. 37
12.2Migration of existing installations .................................... 38
12.3Configuration of the cluster ........................................ 38
12.3.1Network configuration ....................................... 38
12.3.2Host names .............................................. 42
12.3.3Connecting the cluster ....................................... 42
12.4The state of the cluster .......................................... 44
12.5Special cases in the cluster ........................................ 45
12.5.1Access to resources ......................................... 45
12.5.2Device settings ........................................... 46
12.5.3IP addresses or host names of the nodes ............................ 46
12.5.4Administrating Check_MK versions and monitoring instances ............... 46
©Copyright Mathias Kettner GmbH 2018 mathias-kettner.de
CONTENTS CONTENTS
12.6Administrative tasks ............................................ 46
12.6.1Firmware updates in the cluster ................................. 46
12.6.2Disbanding clusters ......................................... 48
12.6.3Exchanging a device ........................................ 48
12.7Diagnostics and troubleshooting ..................................... 48
12.7.1Logging ................................................ 48
13SMS notifications 50
13.1Starting up the modem .......................................... 50
13.2Diagnostics .................................................. 51
14Diagnostics 52
14.1Logs ...................................................... 52
14.2Available Memory .............................................. 53
15Service & support 54
15.1Manual .................................................... 54
15.2Internet .................................................... 54
15.3Firmware ................................................... 54
15.4Hardware support ............................................. 54
15.5Software support .............................................. 54
16Appendices 55
.1 CE declaration of conformity ....................................... 55
.2 Licences ................................................... 55
.3 VMware Tools ................................................ 56
.4 VirtualBox Guest Additions ........................................ 56
.5 Legal notice ................................................. 56
Index 57
©Copyright Mathias Kettner GmbH 2018 mathias-kettner.de
Check_MK rail2 Mark I - Manual 1 / 57
1. Quick start guide
• Unpack the device and first of all check that your shipment is complete.
• An SD card is needed to operate the device and must meet the minimum requirements. Put the card
into the designated slot, making it lock into place.
• Plug in the device. When installing for the first time, you should ensure the following connections as
a minimum:
–Monitor-to-VGA connector
–USB-keyboard
–Network connection (connector: LAN1)
–Power supply
• When you switch on the power, the device will start up automatically.
• While the device is starting up, a dialogue box will appear on the screen asking you to initialise the
SD card (NOTE: All data on the SD card will be deleted!). Confirm the box. After a few minutes
the launching procedure will resume.
• On completion of the launching procedure, the console status view will be displayed.
• So that the appliance can be used for monitoring, there are some settings that need to be made. Press
the key <F1> and, using the configuration dialogue box, configure the following settings as a minimum:
–Network configuration
–Access to the web interface
• Once you have configured these settings, you can access the web interface from a computer connected
to the network by entering the URL http://<ipaddress>/ into the web browser. Log into the web
interface using the password you just configured.
• Select the item instance administration on the menu now shown and click on Create new instance on
the following page.
• Now create a new monitoring instance using the current dialogue box. This instance will start auto-
matically.
• You can now call up the URL http://<ipaddress>/<instanz-id>/ in your browser,
where you can set up Check_MK in the usual manner.
• In order to make things such as name resolution and sending emails possible, you must make further
settings in the web interface. You can read more about this in the chapter on basic configuration on
the web interface.
©Copyright Mathias Kettner GmbH 2018 mathias-kettner.de
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2. Basic configuration
When starting up for the first time, a message will appear asking you what language to choose. This
language will be saved for the entire device.
You will then be displayed a message asking you to initialise the data medium. Confirm this dialogue
box and wait for device startup to be resumed and for the status screen to then be displayed.
©Copyright Mathias Kettner GmbH 2018 mathias-kettner.de
Check_MK rail2 Mark I - Manual 3 / 57
Once the device has been started up, you will see the status screen on the local console.
This screen will show you general status information and the most important configuration options of
your device.
©Copyright Mathias Kettner GmbH 2018 mathias-kettner.de
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2.1 Network and access configuration via console
From the status screen, you can get to the configuration menu by pressing the key <F1>.
For starting up the device, you now need to set the network configuration and specify the device pass-
word.
2.1.1 Network configuration
Use this dialogue box to set up the network configuration of the device. The IP-address, netmask and
the optional default gateway will be queried.
In most cases, the device will need to also access network devices outside of its own network segment.
The default gateway must also be configured for this purpose.
Once these values have been entered, the configuration will be activated, meaning the device will be
immediately reachable via the network and at the entered IP address. One way of testing this is to send
aping from another device in the network.
2.1.2 Access to the web interface
A large part of the device’s configuration is carried out via the web interface. Access to this web interface
is protected by a password, the device password, which you need to specify first.
The factory settings do not include a device password, meaning you cannot yet access the web interface.
Press the key <F1> on the status screen and select device password in order to set the password.
Then select the option web interface from the configuration menu to activate the web interface.
©Copyright Mathias Kettner GmbH 2018 mathias-kettner.de
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Once you have completed these steps you will see the configured IP address in the box device information
and web interface: on in the access box on the status screen of the console, as shown in the screenshot
above. If you have already correctly connected the device with your network, you will now see that the
network connection is active (Network: ACTIVE in the Status box).
2.1.3 Protecting access to the console
After the basic configuration, access to the local console is not protected. This means that anyone who
has direct access to the console (e.g. through access to the server room, or in the case of Check_MK
virt1, through access to the management interface of the virtualisation solution), is able to change the
basic configuration of the device.
In order to protect such access, you have the option to activate a login that must be used in conjunction
with the device password before settings can be made or the current status viewed.
If you have already activated the web interface, you will have already set a device password and do
not need to assign a new one. If you have not done so, open the configuration menu on the console by
pressing the key <F1> and select device password to set the password.
Then select console login from the configuration menu in order to activate this option.
©Copyright Mathias Kettner GmbH 2018 mathias-kettner.de
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