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fence_xvm
Langue: en
Version: 175549 (fedora - 06/07/09)
Section: 8 (Commandes administrateur)
NAME
fence_xvm - General purpose fencing agent for virtual machines.SYNOPSIS
fence_xvm [OPTION]...DESCRIPTION
fence_xvm is an I/O Fencing agent which can be used with any virtual machines for which libvirt has a backend. When used on virtual machines which are backed by clustered storage (and thus, may be migrated about several physical machines), there is a requirement that the host machines are also a part of a CMAN/OpenAIS based cluster, such as linux-cluster.fence_xvm accepts options on the command line as well as from standard input. If no command line options are present, fence_xvm will automatically use standard input. fenced sends the options through stdin when it execs the agent. fence_xvm can be run by itself with command line options which is useful for testing.
OPTIONS
- -d
- Enable debugging output. The more times you specify this parameter, the more debugging output you will receive.
- -i family
- IP family to use (auto, ipv4, or ipv6; default = auto)
- -a address
- Multicast address to use (default=225.0.0.12 for ipv4, ff02::3:1 for ipv6)
- -p port
- Port to use for all communications; must match fence_xvmd (default=1229)
- -r retrans
- Multicast retransmission time (in 1/10 seconds; default=20). This is used to tune the amount of retransmission which is done on busy networks where multicast traffic is unreliable.
- -C auth
- Authentication type (none, sha1, sha256, sha512; default=sha256). This controls the authentication mechanism used to authenticate clients. The three SHA hashes use a key which must be shared between both the Xen virtual machines and the host domain-0 cluster. The three SHA authentication mechanisms use a simple bidirectional challenge-response based on pseudo- random number generation and a shared private key.
- -c hash
- Packet hash type (none, sha1, sha256, sha512; default=sha256). This controls the hashing mechanism used to authenticate fencing requests. The three SHA hashes use a key which must be shared between both the virtual machines and the host (physical) cluster.
- -k key_file
- Use the specified key file for packet hashing / SHA authentication. When both the hash type and the authentication type are set to "none", this parameter is ignored.
- -H domain
- This specifies unique domain name of the virtual machine name (or UUID) which needs to be fenced.
- -u
- Fence by UUID instead of virtual machine name. If specified, the above -H parameter should be the statically-defined 36-character UUID of the virtual machine rather than its human-readable name.
- -o operation
- Fencing operation to perform (null, off, reboot; default=off). This specifies the fencing operation to perform. The null operation does not actually do anything, but allows you to check to see if communication with fence_xvmd is working correctly (note: the result of the null operation is *always* failure!).
- -t timeout
- This specifies the amount of time, in seconds, to wait before a response to the multicast request before giving up (default=30).
- -?
- Print out a help message describing available options, then exit.
- -h
- Print out a help message describing available options, then exit.
- -V
- Print out a version message, then exit.
STDIN PARAMETERS
- debug = 1
- Same as the -d option. Specify numbers >1 for more debugging information.
- family = < param >
- Same as the -i option.
- multicast_address = < param >
- Same as the -a option.
- port = < param >
- Same as the -p option.
- retrans = < param >
- Same as the -r option.
- auth = < param >
- Same as the -C option.
- hash = < param >
- Same as the -c option.
- key_file = < param >
- Same as the -k option.
- retrans = < param >
- Same as the -r option.
- domain = < param >
- Same as the -H option.
- use_uuid = 1
- Same as the -u option.
- option = < param >
- Same as the -o option.
- timeout = < param >
- Same as the -t option.
- domain = < param >
- Same as the -H option.
SEE ALSO
fence(8), fence_node(8), fence_xvmd(8)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre