1STONITH(8) System administration utilitie STONITH(8)
2
6 stonith - extensible interface for remotely powering down a node in the
7 cluster
8
10 stonith -h
11 stonith [-s] [-h] -L
13 stonith [-s] [-h] -t stonith-device-type -n
15 stonith [-s] [-h] -t stonith-device-type {name=value... |
17 -p stonith-device-parameters |
18 -F stonith-device-parameters-file} [-c count] [-l] [-S]
19 stonith [-s] [-h] -t stonith-device-type {name=value... |
21 -p stonith-device-parameters |
22 -F stonith-device-parameters-file} [-c count]
23 [-T {reset | on | off}] [nodename]
24
26 The STONITH module provides an extensible interface for remotely
27 powering down a node in the cluster (STONITH = Shoot The Other Node In
28 The Head). The idea is quite simple: when the software running on one
29 machine wants to make sure another machine in the cluster is not using
30 a resource, pull the plug on the other machine. It´s simple and
31 reliable, albeit admittedly brutal.
32
34 The following options are supported:
35 -c count
37 Perform any actions identified by the -l, -S and -T options count
38 times.
39 -F stonith-device-parameters-file
41 Path of file specifying parameters for a stonith device. To
42 determine the syntax of the parameters file for a given device type
43 run:
44 # stonith -t stonith-device-type -n
46 All of the listed parameters need to appear in order on a single
48 line in the parameters file and be delimited by whitespace.
49 -h
51 Display detailed information about a stonith device including
52 description, configuration information, parameters and any other
53 related information. When specified without a stonith-device-type,
54 detailed information on all stonith devices is displayed.
55 If you don´t yet own a stonith device and want to know more about
57 the ones we support, this information is likely to be helpful.
58 -L
60 List the valid stonith device types, suitable for passing as an
61 argument to the -t option.
62 -l
64 List the hosts controlled by the stonith device.
65 -n
67 Output the parameter names of the stonith device.
68 name=value
70 Parameter, in the form of a name/value pair, to pass directly to
71 the stonith device. To determine the syntax of the parameters for a
72 given device type run:
73 # stonith -t stonith-device-type -n
75 All of the listed parameter names need to be passed with their
77 corresponding values.
78 -p stonith-device-parameters
80 Parameters to pass directly to the stonith device. To determine the
81 syntax of the parameters for a given device type run:
82 # stonith -t stonith-device-type -n
84 All of the listed parameter names need to appear in order and be
86 delimited by whitespace.
87 -S
89 Show the status of the stonith device.
90 -s
92 Silent operation. Suppress logging of error messages to standard
93 error.
94 -T action
96 The stonith action to perform on the node identified by nodename.
97 Chosen from reset, on, and off.
98 Note
100 If a nodename is specified without the -T option, the stonith
101 action defaults to reset.
102 -t stonith-device-type
104 The type of the stonith device to be used to effect stonith. A list
105 of supported devices for an installation may be obtained using the
106 -L option.
107 -v
109 Ignored.
110
112 To determine which stonith devices are available on your installation,
113 use the -L option:
114 # stonith -L
116 All of the supported devices will be displayed one per line. Choose one
118 from this list that is best for your environment - let´s use wti_nps
119 for the rest of this example. To get detailed information about this
120 device, use the -h option:
121 # stonith -t wti_nps -h
123 Included in the output is the list of valid parameter names for
125 wti_nps. To get just the list of valid parameter names, use the -n
126 option instead:
127 # stonith -t wti_nps -n
129 All of the required parameter names will be displayed one per line. For
131 wti_nps the output is:
132 ipaddr
134 password
135 There are three ways to pass these parameters to the device. The first
137 (and preferred) way is by passing name/value pairs on the stonith
138 command line:
139 # stonith -t wti_nps ipaddr=my-dev-ip password=my-dev-pw ...
141 The second way, which is maintained only for backward compatibility
143 with legacy clusters, is passing the values in order on the stonith
144 command line with the -p option:
145 # stonith -t wti_nps -p "my-dev-ip my-dev-pw" ...
147 The third way, which is also maintained only for backward compatibility
149 with legacy clusters, is placing the values in order on a single line
150 in a config file:
151 my-dev-ip my-dev-pw
153 ... and passing the name of the file on the stonith command line with
155 the -F option:
156 # stonith -t wti_nps -F ~/my-wtinps-config ...
158 To make sure you have the configuration set up correctly and that the
160 device is available for stonith operations, use the -S option:
161 # stonith -t wti_nps ipaddr=my-dev-ip password=my-dev-pw -S
163 If all is well at this point, you should see something similar to:
165 stonith: wti_nps device OK.
167 If you don´t, some debugging may be necessary to determine if the
169 config info is correct, the device is powered on, etc. The -d option
170 can come in handy here - you can add it to any stonith command to cause
171 it to generate debug output.
172 To get the list of hosts controlled by the device, use the -l option:
174 # stonith -t wti_nps ipaddr=my-dev-ip password=my-dev-pw -l
176 All of the hosts controlled by the device will be displayed one per
178 line. For wti_nps the output could be:
179 node1
181 node2
182 node3
183 To power off one of these hosts, use the -T option:
185 # stonith -t wti_nps ipaddr=my-dev-ip password=my-dev-pw -T off node
187
189 heartbeat(8), meatclient(8)
190
192 Alan Robertson <alanr@unix.sh>
193 stonith
194 Simon Horman <horms@vergenet.net>
196 man page
197 Florian Haas <florian.haas@linbit.com>
199 man page
200cluster-glue 1.0.6 December 7, 2009 STONITH(8)