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18 Setting up management hubs
18.1 About management hubs
A management hub is an aggregation point for management activities. Insight Control for Linux
uses management hubs to distribute the management load across multiple servers. HP
recommends creating multiple management hubs if you plan to monitor over 256 managed
systems.
You have the option of choosing any physical server to act as a management hub; you can elect
to use the CMS as a management hub or not. If you do not specify a management hub, the CMS
becomes the sole management hub by default.
IMPORTANT:
• HP recommends the use of physical servers for use as management hubs.
• Only servers running a supported version of RHEL or SLES (that is, supported as a CMS)
can act as management hubs. Furthermore, the operating systems of the CMS and the
management hub must have the same architecture (32-bit or 64-bit) although they can have
different OS types (RHEL or SLES).
•
Each managed system is assigned to a management hub automatically when you run
Options→IC-Linux→Configure Management Services. Figure 18-1 illustrates this structure.
Figure 18-1 Management hub aggregation
HP recommends that you create at least one management hub for every 256 servers. For example,
if you plan to monitor 1000 servers, create a minimum of 4 management hubs.
The management hub also runs the Supermon aggregator (supermond) and Nagios
(nagios_monitor) services.
18.1 About management hubs 161
- HP Part Number: 483100-006 1
- Published: October 2010 1
- Edition: 6 1
- Table of Contents 3
- 4 Table of Contents 4
- Table of Contents 5 5
- 6 Table of Contents 6
- Table of Contents 7 7
- 8 Table of Contents 8
- Table of Contents 9 9
- 10 Table of Contents 10
- Part I Introduction 11
- 1.1 Overview 13
- # man command_name 18
- 1.10 Virtual media 19
- 1.11 Managed system names 20
- 1.11 Managed system names 21 21
- 1.12 Connecting to HP SIM 22
- 2 Security 25
- 26 Security 26
- 2.2 Validating RPM signatures 27
- 2.3 Trusted certificates 27
- 28 Security 28
- 3 Managing licenses 29
- 3.3 Licensing virtual guests 30
- 4.1 Task results overview 31
- 4.3 Task results page 31
- Figure 4-1 Task results page 32
- 4.4 Common task results 33
- 4.4.1.1 Stopping a task 34
- 4.4.3 Operation details log 35
- 4.5.2 Target details table 39
- 4.6.1 Operations table 41
- 4.6.2 Operation controls 42
- Part II Deployment 45
- Requirements 48
- 5.1.2 Repository contents 49
- 5.2.1 Registration overview 50
- 5.2.3 Registering PSPs 53
- Item Name: MyConfig 55
- # mkdir CD1 58
- # mkdir CD2 58
- # mkdir CD3 58
- # mkdir CD4 58
- Copying a PSP from the CMS 60
- Downloading a PSP 60
- 6.1 Introduction 63
- 192.168.10.5-192.168.10.50 69
- 6.5 Next Step 73
- 7.1 Discovering systems 75
- 7.1 Discovering systems 77 77
- # /sbin/hpsnmpconfig 78
- 7.4 Changing the boot method 80
- 7.5 Next steps 81
- 8 Setting up managed systems 83
- # /bin/hostname 85
- # mxgethostname -n venus 85
- Host name: venus.example.com 85
- DNS Name: venus.example.com 85
- 3. Select Next> 86
- 88 Setting up managed systems 88
- 8.4 Next steps 90
- /^[Space-TAB]*kernel 96
- Listen 80 100
- # /etc/init.d/httpd restart 100
- # /opt/mx/bin/mxstop 100
- # /opt/mx/bin/mxstart 100
- # cd /opt/repository/iso 105
- # rm -f GUID_number*.iso 105
- GUID: GUID_number 105
- 10.1.1 File system types 110
- For Enclosures 116
- For Switches 116
- Switch1=n1 n3 n4 n5] 118
- 11.1 Installing virtual hosts 125
- ksdevice=eth1 128
- # ping virtual_guest_name 131
- # cd /tmp 133
- # vi osver-virt-guest.cfg 133
- 11.6 Virtual guest operations 134
- 12.2.1 Initial setup 138
- HPSUM_FLAGS=parameters 139
- HPSUM_FLAGS=--downgrade 139
- 13.2 Required PSP components 143
- 14 ISO control operations 147
- 15 Remote server controls 149
- 16.4.1 Running an SSH command 153
- 16.4.2 Running a Linux script 153
- Part III Monitoring 155
- 17.2 Populating a collection 158
- Linux collection 160
- 18 Setting up management hubs 161
- 19.1 Overview of monitoring 165
- PermitRootLogin yes 166
- # /etc/init.d sshd restart 166
- # pdsh -a uptime 167
- If Warnings Are Reported 168
- 20.2 Nagios overview 172
- 20.2.1 Nagios documentation 173
- 20.2.2 Launching Nagios 174
- 20.3 Using Nagios 175
- 20.3 Using Nagios 177 177
- 20.3 Using Nagios 179 179
- # nrg --mode analyze 180
- 20.3 Using Nagios 181 181
- SENSORPRINT0 = CPU[0-9]+ TEMP 193
- SENSORPRINT1 = SYS TEMP 193
- SENSORPRINT2 = Temp[1-9]+ 193
- FULLSENSORLISTING = 1 193
- # shownode info 195
- # shownode virtual 196
- # shownode metrics paging 197
- 21.2.4.3 Displaying memory 198
- 22.2 How CMF works 201
- # service cmfd restart 203
- Part IV Other topics 205
- 23 Miscellaneous topics 207
- DISCOVERY_MAX_AT_ONCE=servers 208
- # rm /root/.ssh/icelx_* 208
- 23.7 Event logging overview 209
- # cd /opt/hptc/syslog-ng/etc 210
- 23.9.1 Configuring SNMP 211
- 212 Miscellaneous topics 212
- 24 Advanced topics 213
- 214 Advanced topics 214
- Agents task 215
- 216 Advanced topics 216
- 25 Troubleshooting 219
- 25.2 Alternative booting 220
- 25.14 Nagios Troubleshooting 238
- # ps auxww 242
- # service snmpd status 252
- # /bin/ps 254
- 25.22 Troubleshooting SSH 255
- 26.1 Contacting HP 261
- 26.1.5 Documentation feedback 262
- 26.3 Related information 263
- 26.3.2 Websites 264
- 26.3 Related information 265 265
- 26.4 Typographic conventions 266
- A Customizing Nagios 267
- # /etc/init.d/nagios restart 272
- # /etc/init.d/nagios stop 274
- # /etc/init.d/nagios start 274
- Glossary 275
- 276 Glossary 276
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