swap mount additions in revamp

[feisty_meow.git] / scripts / site_avenger / revamp_cakelampvm.sh

diff --git a/scripts/site_avenger/revamp_cakelampvm.sh b/scripts/site_avenger/revamp_cakelampvm.sh
index 9c83a588a97d90823ce2dc3f9001e31a14b1ecab..62cb3a7b1e4341db151cf1b4afd9d6e7d34f8721 100644 (file)
--- a/scripts/site_avenger/revamp_cakelampvm.sh
+++ b/scripts/site_avenger/revamp_cakelampvm.sh
@@ -270,6 +270,46 @@ test_or_die "enabling the new cakelampvm environment config for apache"
 
 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
+
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