projects / mirror_zfs.git / blame
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| b9373170 OF |
1 | .\" |
| 2 | .\" CDDL HEADER START | |
| 3 | .\" | |
| 4 | .\" The contents of this file are subject to the terms of the | |
| 5 | .\" Common Development and Distribution License (the "License"). | |
| 6 | .\" You may not use this file except in compliance with the License. | |
| 7 | .\" | |
| 8 | .\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE | |
| 9 | .\" or http://www.opensolaris.org/os/licensing. | |
| 10 | .\" See the License for the specific language governing permissions | |
| 11 | .\" and limitations under the License. | |
| 12 | .\" | |
| 13 | .\" When distributing Covered Code, include this CDDL HEADER in each | |
| 14 | .\" file and include the License file at usr/src/OPENSOLARIS.LICENSE. | |
| 15 | .\" If applicable, add the following below this CDDL HEADER, with the | |
| 16 | .\" fields enclosed by brackets "[]" replaced with your own identifying | |
| 17 | .\" information: Portions Copyright [yyyy] [name of copyright owner] | |
| 18 | .\" | |
| 19 | .\" CDDL HEADER END | |
| 20 | .\" | |
| 21 | .\" | |
| 22 | .\" Copyright (c) 2017 by Lawrence Livermore National Security, LLC. | |
| 23 | .\" | |
| 24 | .Dd July 24, 2017 | |
| 25 | .Dt ZGENHOSTID 8 SMM | |
| 26 | .Os Linux | |
| 27 | .Sh NAME | |
| 28 | .Nm zgenhostid | |
| 29 | .Nd generate and store a hostid in | |
| 30 | .Em /etc/hostid | |
| 31 | .Sh SYNOPSIS | |
| 32 | .Nm | |
| 33 | .Op Ar hostid | |
| 34 | .Sh DESCRIPTION | |
| 35 | If | |
| 36 | .Em /etc/hostid | |
| 37 | does not exist, create it and store a hostid in it. If the user provides | |
| 38 | .Op Ar hostid | |
| 39 | on the command line, store that value. Otherwise, randomly generate a | |
| 40 | value to store. | |
| 41 | .Pp | |
| 42 | This emulates the | |
| 43 | .Xr genhostid 1 | |
| 44 | utility and is provided for use on systems which do not include the utility. | |
| b9373170 OF |
45 | .Sh OPTIONS |
| 46 | .Op Ar hostid | |
| 47 | Specifies the value to be placed in | |
| 48 | .Em /etc/hostid . | |
| 49 | It must be a number with a value between 1 and 2^32-1. This value | |
| 50 | .Sy must | |
| 51 | be unique among your systems. It must be expressed in hexadecimal and be | |
| 52 | exactly 8 digits long. | |
| 53 | .Sh EXAMPLES | |
| 54 | .Bl -tag -width Ds | |
| 55 | .It Generate a random hostid and store it | |
| 56 | .Bd -literal | |
| 57 | # zgenhostid | |
| 58 | .Ed | |
| 59 | .It Record the libc-generated hostid in Em /etc/hostid | |
| 60 | .Bd -literal | |
| 61 | # zgenhostid $(hostid) | |
| 62 | .Ed | |
| 63 | .It Record a custom hostid (0xdeadbeef) in Em etc/hostid | |
| 64 | .Bd -literal | |
| 65 | # zgenhostid deadbeef | |
| 66 | .Ed | |
| 67 | .El | |
| 68 | .Sh SEE ALSO | |
| b9373170 | 69 | .Xr genhostid 1 , |
| 90cdf283 | 70 | .Xr hostid 1 , |
| 71 | .Xr spl-module-parameters 5 |