system-config/make_swap.sh
Monty Taylor 0bb4232586 Add base playbooks and roles to bootstrap a new server
We want to launch a new bastion host to run ansible on. Because we're
working on the transition to ansible, it seems like being able to do
that without needing puppet would be nice. This gets user management,
base repo setup and whatnot installed. It doesn't remove them from the
existing puppet, nor does it change the way we're calling anything that
currently exists.

Add bridge.openstack.org to the disabled group so that we don't try to
run puppet on it.

Change-Id: I3165423753009c639d9d2e2ed7d9adbe70360932
2018-08-01 14:57:44 -07:00

67 lines
2.8 KiB
Bash

#!/bin/bash
# Copyright 2013 OpenStack Foundation
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
# If we're running on a cloud server with no swap, fix that:
if [ `grep SwapTotal /proc/meminfo | awk '{ print $2; }'` -eq 0 ]; then
if [ -b /dev/vdb ]; then
DEV='/dev/vdb'
elif [ -b /dev/xvde ]; then
DEV='/dev/xvde'
fi
# Avoid using config drive device for swap
if [ -n "$DEV" ] && ! blkid | grep $DEV | grep TYPE ; then
MEMKB=`grep MemTotal /proc/meminfo | awk '{print $2; }'`
# Use the nearest power of two in MB as the swap size.
# This ensures that the partitions below are aligned properly.
MEM=`python3 -c "import math ; print(2**int(round(math.log($MEMKB/1024, 2))))"`
if mount | grep ${DEV} > /dev/null; then
echo "*** ${DEV} appears to already be mounted"
echo "*** ${DEV} unmounting and reformating"
umount ${DEV}
fi
parted ${DEV} --script -- \
mklabel msdos \
mkpart primary linux-swap 1 ${MEM} \
mkpart primary ext2 ${MEM} -1
sync
# We are only interested in scanning $DEV, not all block devices
sudo partprobe ${DEV}
# The device partitions might not show up immediately, make sure
# they are ready and available for use
udevadm settle --timeout=0 || echo "Block device not ready yet. Waiting for up to 10 seconds for it to be ready"
udevadm settle --timeout=10 --exit-if-exists=${DEV}1
udevadm settle --timeout=10 --exit-if-exists=${DEV}2
mkswap ${DEV}1
# The default ratio is 16384 bytes per inode or so. Reduce that to 8192
# bytes per inode so that we get roughly twice the number of inodes as
# by default. This should still be well above the block size of 4096.
# We do this because we have found in at least a couple locations that
# more inodes is useful and is painful to fix after the fact.
mkfs.ext4 -i 8192 ${DEV}2
swapon ${DEV}1
mount ${DEV}2 /mnt
rsync -a /opt/ /mnt/
umount /mnt
perl -nle "m,${DEV}, || print" -i /etc/fstab
echo "${DEV}1 none swap sw 0 0" >> /etc/fstab
echo "${DEV}2 /opt ext4 errors=remount-ro,barrier=0 0 2" >> /etc/fstab
mount -a
fi
fi