Add a delay after the start of sge_execd

cluster/sge.enable.host.queue.sh

@@ -22,6 +22,9 @@ readonly MACO_TMP_URGENT_FILE="${MACO_LOCAL_DIR}/.maco.urgent.upgrade"
 # Maco status file
 readonly MACO_STATUS_FILE="/var/fr.univ-rennes1.ipr.maco.machinestate.txt"
 
+# Default sleep delay
+readonly SLEEP_DELAY_DEFAULT="15"
+
 ## Colors
 readonly PURPLE='\033[1;35m'
 readonly RED='\033[0;31m'
@@ -32,7 +35,7 @@ readonly COLOR_DEBUG="${PURPLE}"
 usage() {                                                       # {{{
 
 	cat <<- EOF
-usage: $PROGNAME [--help] [-d|-f|-h|-q] [hostname]
+usage: $PROGNAME [--help] [-d|-f|-h|-q|-s] [hostname]
 
 Try to enable all SGE queues of the current host (default),
 if no pending upgrades (Maco, APT) are present,
@@ -46,6 +49,9 @@ EXAMPLES :
         ${PROGNAME} marvin.domain.tld
         ${PROGNAME} -h marvin.domain.tld
 
+    - Wait 30 seconds after the start of sge_execd (default: ${SLEEP_DELAY_DEFAULT})
+        ${PROGNAME} -s 30
+
 OPTIONS :
     -d,--debug
         Enable debug messages.
@@ -64,6 +70,10 @@ OPTIONS :
     -q,--quiet
         Disable messages on standard output (except for error).
 
+    -s,--sleep
+        Set a different delay to wait after the sge_execd start
+        (default: ${SLEEP_DELAY_DEFAULT}).
+
 EOF
 
 }
@@ -91,11 +101,18 @@ message() {                                                     # {{{
 # }}}
 define_vars() {                                                 # {{{
 
-	## If sge_hostname wasn't defined
+	## If sge_hostname wasn't defined {{{
 	if [ -z "${sge_hostname}" ]; then
 		## Use local host for sge_hostname
 		sge_hostname="$(hostname -f)"
 	fi
+	## }}}
+	## If sleep_delay wasn't defined (argument) {{{
+	if [ -z "${sleep_delay}" ]; then
+		## Use default value
+		readonly sleep_delay="${SLEEP_DELAY_DEFAULT}"
+	fi
+	## }}}
 
 	## If the host to manage is the current one
 	if is_current_host "${sge_hostname}" ; then
@@ -509,6 +526,9 @@ main() {                                                        # {{{
 		is_proc_running "${sge_proc_pattern}" \
 			|| systemctl --quiet start sge_execd.service > /dev/null 2>&1 \
 			|| exit 4
+
+		## Wait some seconds
+		sleep "${sleep_delay}"
 	fi
 
 	## If we need to watch for upgrades