diskimage-builder/elements/sysctl/bin/sysctl-write-value
Gregory Haynes fdffa56ff2 Add element for setting sysctl values
Theres a pretty standard workflow for setting a sysctl value which will
be applied on image boot which was written by tripleo. Lets move this in
tree as other folks (like Octavia) would like to depend on it.

Change-Id: I3c266870d417cdba3196f5fa65c4cd634ab13173
2016-10-10 15:33:48 +00:00

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#!/bin/bash
#
# Copied from tripleo-image-element's sysctl element
#
# Validate and manage setting sysctl settings.
#
# The script is called with name/value pairs which are stored
# in the system default sysctl.d directory. This script performs
# no checking, just writing out the file.
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
NAME=${1:-}
VALUE=${2:-}
# Optional comment used to describe the setting
COMMENT=${3:-"This file was created by diskimage-builder."}
if [ -z "$NAME" -o -z "$VALUE" ]; then
echo "Usage: sysctl-write-value <name> <value> [comment]"
exit 1
fi
FILENAME="/etc/sysctl.d/${NAME}.conf"
cat > $FILENAME <<EOF_CAT
# $COMMENT
$NAME = $VALUE
EOF_CAT