lib/load-configuration: check early for running mysqld, add a kill-switch /tmp/do-not-run-build-master

1 files changed, 9 insertions, 3 deletions

diff --git a/lib/load-configuration b/lib/load-configuration
index 9199281..a2ba0e0 100755
--- a/lib/load-configuration
+++ b/lib/load-configuration
@@ -4,9 +4,6 @@
 
 # shellcheck disable=SC2034
 
-# TODO: a global kill-switch would be nice to block all activity before
-# a reboot
-
 set -e
 export LANG=C
 
@@ -33,6 +30,15 @@ fi
 if [ "$(hostname)" = 'buildmaster.archlinux32.org' ]; then
   i_am_the_master=true
 
+  # abort early if mysqld is not running or kill switch active
+  # ('/tmp/do-not-run-build-master')
+  if [ ! -S '/var/run/mysqld/mysqld.sock' ] || \
+    [ -f '/tmp/do-not-run-build-master' ]; then
+    >&2 echo 'mysqld is not running or build master is on halt'
+    >&2 echo 'I will abort - whatever you try to do would probably fail anyway.'
+    exit 1
+  fi
+
   releng_directory="${work_dir}/repos/releng"
 else
   i_am_the_master=false