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halt nodes of logical group group_1 except node_exp
halt delay "mesg" all group_1 group_2
halt nodes of group_1 and group_2
cmu>
Displaying logical groups of a cluster
The groups command displays the list of the logical groups.
cmu> groups
list of group(s) with active nodes : debian default nodevmap pfmon sfs2
list of available group(s) for backup and cloning : default sfs2 suse10 pfmon testrh3u4 debian nathclontest
nodevmap
cmu>
You can also call this command followed by a group name. The result displays all active nodes
of the group.
cmu> groups default
active node list selected: o185i194 o185i202 o185i216 o185i222 o185i233 o185i243 o185i252 o185i253 o185i254
cmu>
Displaying nodes of a logical group
To view nodes in a group and the attributes:
cmu> groups <group_name>
For example:
cmu> groups default
active node list selected: o185i194 o185i202 o185i216 o185i222 o185i233 o185i243 o185i252 o185i253 o185i254
cmu>
Displaying nodes of the cluster
The nodes command displays the list of nodes with the attribute name.
cmu> nodes
Machines.node.o185i222 = 16.16.185.222,255.255.248.0,00-00-1A-19-8A-08,default,16.16.189.222,lo100i
Machines.node.o185i233 = 16.16.185.233,255.255.248.0,00-00-1A-19-74-93,default,16.16.189.233,lo100i
Machines.node.o185i243 = 16.16.185.243,255.255.248.0,00-00-1A-19-90-DD,default,16.16.189.243,lo100i
Machines.node.o185i252 = 16.16.185.252,255.255.248.0,00-00-1A-19-7E-7B,default,16.16.189.252,lo100i
cmu>
You can also use a subset of this command. The next section describes how to specify subset of
nodes in the HP Insight CMU CLI.
7.17.3 Specifying nodes
NOTE: The following commands are HP Insight CMU commands. You can only run them in the
HP Insight CMU CLI.
Using the HP Insight CMU CLI, you can execute a command on any number of nodes.
The nodes command:
• Displays node information
• Tests regular expressions for selecting nodes before executing a command
Executing a command on one node
To execute a command on only one node, you must specify the name of the node. The following
command executes on node o185i222:
cmu> node o185i222
active node list selected: o185i222
cmu>
130 Managing a cluster with HP Insight CMU
- User Guide 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- Examples 10
- 1 Overview 11
- 1.1.4 System disk replication 12
- 2.1 Installing HP Insight CMU 13
- Provisioning 14
- Monitoring 14
- Remote management 14
- 2.1.8 Configuring the BIOS 15
- 2.1.8.3 DL160 G6 Servers 18
- 2.2.3.1 RHEL 6 support 21
- 2.3 Installation procedures 22
- 2.4.2 Software prerequisites 29
- 2.5 Upgrading HP Insight CMU 34
- 2.5.2.4 Monitoring clients 35
- 3.1 HP Insight CMU GUI 40
- 3.3 Administrator mode 41
- Using an ssh tunnel 42
- Using an X Window server 43
- 4.3 Cluster administration 44
- 4.3.1 Node management 45
- 4.3.1.1 Scanning nodes 46
- 4.3.1.2 Adding nodes 47
- 4.3.1.3 Modifying nodes 48
- 4.3.1.4 Importing nodes 49
- 4.3.1.5 Deleting nodes 49
- 4.3.1.6 Exporting nodes 49
- 4.3.1.7 Contextual menu 49
- 5.1 Logical group management 51
- 5.1.2 Deleting logical groups 52
- 5.1.3 Renaming logical groups 52
- 5.2 Autoinstall 53
- 5.2 Autoinstall 55 55
- 5.2 Autoinstall 57 57
- 5.3 Backing up 58
- 5.3 Backing up 59 59
- 5.4 Cloning 61
- 5.4.1 Preconfiguration 62
- 5.4.2 Reconfiguration 63
- 5.5 Node static info 64
- 5.6 Rescan MAC 65
- 5.7.1 Expanding an image 66
- 5.7.2 Modifying an image 67
- 5.8.1 Overview 68
- CMU_DISKLESS=true 69
- 2.6.9-42.EL 72
- 2.6.9-42.ELsmp 72
- node> 79
- On Red Hat 82
- 6.3 Monitoring the cluster 86
- 6.3.1 Node and group status 87
- 6.3 Monitoring the cluster 89 89
- 6.3.5 Gauge widget 90
- 6.3 Monitoring the cluster 91 91
- 6.3.7 Using Time View 92
- 6.3.7.2 Adaptive stacking 93
- 6.3.7.3 Bindings and options 93
- 6.3.8 Archiving user groups 95
- 6.5.1 Action and alert files 96
- 6.5.2 Actions 97
- 6.5.3 Alerts 98
- 6.5.4 Alert reactions 99
- PlotDir = /var/log/collectl 103
- Figure 41 ColPlot window 104
- 6.5.7.2 Monitoring AMD GPUs 106
- 6.5.9 Extended metric support 109
- [root@cmumaster ~]# 110
- /opt/cmu/etc/cmu_gen8_nodes 117
- 7.6 Shutdown 119
- 7.7 Power off 119
- 7.8 Boot 120
- 7.9 Reboot 120
- 7.10 Change UID LED status 120
- 7.12 Single window pdsh 121
- 7.12.1 cmudiff examples 122
- 7.12 Single window pdsh 123 123
- 7.14 User group management 125
- 7.14.2 Deleting user groups 126
- 7.14.3 Renaming user groups 126
- 7.16 Customizing the GUI menu 127
- 7.17 HP Insight CMU CLI 128
- Help commands 129
- Getting help for a command 129
- 7.17.3 Specifying nodes 130
- 7.17 HP Insight CMU CLI 131 131
- Booting a set of nodes 132
- Rebooting a set of nodes 133
- Halting a set of nodes 133
- Powering off a set of nodes 133
- Cloning a set of nodes 134
- Adding a new logical group 135
- Backing up a node 135
- 7.17 HP Insight CMU CLI 137 137
- 8 Advanced topics 139
- 8.1.3 Examples 141
- 8.2.1 Build diskless image 142
- 8.2.2 Delete diskless image 143
- 8.2.3 Configure diskless node 143
- 8.2.4 Post node configuration 143
- 8.2.6 Boot diskless node 144
- 8.2.7 Diskless check 144
- 146 Advanced topics 146
- 8.5 Support for ScaleMP 148
- 8.6 Cloning mechanisms 148
- 8.6 Cloning mechanisms 149 149
- 150 Advanced topics 150
- 152 Advanced topics 152
- 154 Advanced topics 154
- 9 Support and other resources 159
- 9.3 Typographic conventions 160
- A Troubleshooting 162
- A.3 Backup issues 163
- A.4 Cloning issues 164
- A.6 GUI problems 164
- A.6 GUI problems 165 165
- 166 Troubleshooting 166
- HP Insight CMU manpages 167
- SYNOPSIS 168
- DESCRIPTION 168
- EXAMPLES 170
- OPTIONS (naming) 199
- Example 1 200
- Example 2 201
- Example 3 201
- Example 4 202
- NODE AND GROUP OPTIONS 207
- Glossary 219
- 220 Glossary 220
- 222 Index 222
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