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Full Discussion: Bash script to add multiple resources to NFS pacemaker cluster
Top Forums Shell Programming and Scripting Bash script to add multiple resources to NFS pacemaker cluster Post 303037210 by hburnswell on Thursday 25th of July 2019 08:07:04 PM
Old 07-25-2019
Bash script to add multiple resources to NFS pacemaker cluster
All,

I'm looking for some guidance on how to accomplish automating the addition of exports to an HA Pacemaker NFS cluster. I would like to do it in bash for logistics reasons.

The resource creation command looks like this:

Code:
pcs resource create nfs-b2b-hg-media-10.1 exportfs clientspec=10.1.0.0/255.255.0.0 options=rw,sync,no_root_squash directory=/nfs/exports/media fsid=1 --group nfsgroup

However, I would like the script to be able to add multiple exports at one time and am trying to figure out the best way to do it. I have been playing around with arrays and can gather 2 of the necessary variables in the command, but there are 4 needed variables:

Code:
resource_name --> nfs-b2b-hg-media-10.1
clientspec --> 10.1.0.0/255.255.0.0
directory --> /nfs/exports/media
fsid --> 1

The rest of the command is pretty static.

Here is a small test script that gathers resource name and clientspec (and puts in order):

Code:
#!/usr/bin/bash

cs10168="10.16.8.0/255.255.255.0"
cs101="10.1.0.0/255.255.0.0"
cs1091="10.91.0.0/255.255.0.0"
dirs=(media hotdrive images)
nfsenv="nfs-b2b-hg"
nfsoptions="rw,sync,no_root_squash"
lv=exports
mt="/nfs"
nfsgrp=nfsgroup

declare -A exports
exports[${nfsenv}-${dirs[0]}-10.1]=${cs101}
exports[${nfsenv}-${dirs[1]}-10.91]=${cs1091}
exports[${nfsenv}-${dirs[2]}-10.1]=${cs101}
exports[${nfsenv}-${dirs[2]}-10.91]=${cs1091}

declare -a orders
orders+=( ${nfsenv}-${dirs[0]}-10.1 )
orders+=( ${nfsenv}-${dirs[1]}-10.91 )
orders+=( ${nfsenv}-${dirs[2]}-10.1 )
orders+=( ${nfsenv}-${dirs[2]}-10.91 )

for i in ${orders[@]}

do

       pcs resource create $i exportfs clientspec=${exports[$i]} options=$nfsoptions directory=${mt}/${lv}/${dirs[0]} fsid=1 --group $nfsgrp

done

As you can see there is a problem with how to define 'directory' and 'fsid'.

Does anyone have any suggestions on how to accomplish this in bash? Any guidance is greatly appreciated.

Thanks,

HB
Last edited by hicksd8; 07-26-2019 at 07:00 AM..
 

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LEARN ABOUT DEBIAN

crm_verify

PACEMAKER(8)						  System Administration Utilities					      PACEMAKER(8)

NAME

       Pacemaker - Part of the Pacemaker cluster resource manager

SYNOPSIS

       crm_verify [modifiers] data_source

DESCRIPTION

       crm_verify - Check a (complete) confiuration for syntax and common conceptual errors.

       Checks the well-formedness of an XML configuration, its conformance to the configured DTD/schema and for the presence of common misconfigu-
       rations.

       It reports two classes of problems, errors and warnings. Errors must be fixed before the cluster will work properly. However, it is left up
       to the administrator to decide if the warnings should also be fixed.

OPTIONS

       -?, --help
	      This text

       -$, --version
	      Version information

       -V, --verbose
	      Increase debug output

   Data sources:
       -L, --live-check
	      Check the configuration used by the running cluster

       -x, --xml-file=value
	      Check the configuration in the named file

       -X, --xml-text=value
	      Check the configuration in the supplied string

       -p, --xml-pipe
	      Check the configuration piped in via stdin

   Additional Options:
       -S, --save-xml=value
	      Save the verified XML to the named file.	Most useful with -L

EXAMPLES

       Check the consistency of the configuration in the running cluster:

	      # crm_verify --live-check

       Check the consistency of the configuration in a given file and produce verbose output:

	      # crm_verify --xml-file file.xml --verbose

AUTHOR

       Written by Andrew Beekhof

REPORTING BUGS

       Report bugs to pacemaker@oss.clusterlabs.org

Pacemaker 1.1.7 						    April 2012							      PACEMAKER(8)
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