CheckMK Rail2 Mark I Bedienungsanleitung

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

Check_MK rail2 Mark I - Manual 2 / 57

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

Check_MK rail2 Mark I - Manual 4 / 57

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

Check_MK rail2 Mark I - Manual 5 / 57

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.

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