define_yeti_alias remove_domain="sudo bash \$FEISTY_MEOW_SCRIPTS/system/remove_domain.sh"
define_yeti_alias add_apache_site="sudo bash \$FEISTY_MEOW_SCRIPTS/system/add_apache_site.sh"
define_yeti_alias remove_apache_site="sudo bash \$FEISTY_MEOW_SCRIPTS/system/remove_apache_site.sh"
+define_yeti_alias add_swap_mount="sudo bash \$FEISTY_MEOW_SCRIPTS/system/add_swap_mount.sh"
#hmmm: some magma intrusions from the fred customizations...
define_yeti_alias revamp_cakelampvm="sudo bash \"$FEISTY_MEOW_SCRIPTS/site_avenger/revamp_cakelampvm.sh\""
echo Successfully configured the apache2 environment variables needed for cakelampvm.
+##############
+
+# add in a swap mount if not already configured.
+
+sep
+
+# check for existing swap.
+free | grep -q "Swap:[[:blank:]]*[1-9][0-9]"
+if [ $? -ne 0 ]; then
+ # no swap in current session, so add it.
+ add_swap_mount
+
+ echo "Enabled ramdisk swap partition for the current boot session."
+fi
+
+# the above just gives this session a swap partition, but we want to have
+# the vm boot with one also.
+
+# check if there is already swap mentioned in the root crontab. we will get root's
+# crontab below since this script has to run as sudo.
+crontab -l | grep -iq add_swap_mount
+if [ $? -ne 0 ]; then
+ # no existing swap setup in crontab, so add it.
+ # need to do it carefully, since sed won't add lines to a null file. we thus
+ # create a temporary file to do our work in and ignore sed as a tool for this.
+ tmpfile="$(mktemp junk.XXXXXX)"
+ crontab -l 2>/dev/null >"$tmpfile"
+ echo "
+# need to explicitly set any variables we will use.
+FEISTY_MEOW_APEX=${FEISTY_MEOW_APEX}
+# add swap space to increase memory available.
+@reboot bash $FEISTY_MEOW_APEX/scripts/system/add_swap_mount.sh
+" >>"$tmpfile"
+ # now install our new version of the crontab.
+ crontab "$tmpfile"
+ rm "$tmpfile"
+
+ echo "Added boot-time ramdisk swap partition to crontab for root."
+fi
+
##############
##############
export WORKDIR="$( \cd "$(\dirname "$0")" && /bin/pwd )" # obtain the script's working directory.
source "$WORKDIR/../core/launch_feisty_meow.sh"
-#hmmm: should be able to add a new swap drive if desired.
-
-#hmmm: why all the hard-coded paths below?
-
-/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=2048
+if [[ $EUID != 0 ]]; then
+ echo "This script must be run as root or sudo."
+ exit 1
+fi
+
+# optional parameters: the instance number of the swap file (best as a number),
+# and the size of the swap file to add.
+SWAP_INSTANCE="$1"; shift
+SWAP_SIZE="$1"; shift
+
+if [ "$SWAP_INSTANCE" == "--help" ]; then
+ echo "\
+This script will add a swap partition for Linux that uses hard drive space for
+swap memory. This increases the amount of available memory on RAM constrained
+systems. It accepts two parameters: (1) the instance of the swap file, which
+should be a small number not already used for a swap partition, and (2) the
+size of the swap file in megabytes."
+ exit 1
+fi
+
+# if the swap instance variable is already set, then we'll use it.
+# this allows multiple different swap partitions to be added.
+if [ -z "$SWAP_INSTANCE" ]; then
+ SWAP_INSTANCE=1
+fi
+
+# allow the amount of swap space to be determined from outside the script.
+# this is measured in megabytes.
+if [ -z "$SWAP_SIZE" ]; then
+ SWAP_SIZE=2048
+fi
+
+/bin/dd if=/dev/zero of=/var/swap.${SWAP_INSTANCE} bs=1M count=${SWAP_SIZE}
test_or_die "creating swap file"
-/bin/chmod 600 /var/swap.1
+/bin/chmod 600 /var/swap.${SWAP_INSTANCE}
test_or_die "setting swap file permissions"
-/sbin/mkswap /var/swap.1
+/sbin/mkswap /var/swap.${SWAP_INSTANCE}
test_or_die "formatting swap file as swap partition"
-/sbin/swapon /var/swap.1
+/sbin/swapon /var/swap.${SWAP_INSTANCE}
test_or_die "enabling new swap partition"
free
projects / feisty_meow.git / commitdiff