Install mysql-wait-ready on RHEL-6 for the SysV init

mariadb-scripts.patch

@@ -4,7 +4,7 @@ be expanded by cmake. Cmake needs to know about them, so adding them manually.
 diff -up mariadb-10.2.8/scripts/CMakeLists.txt.p7 mariadb-10.2.8/scripts/CMakeLists.txt
 --- mariadb-10.2.8/scripts/CMakeLists.txt.p7	2017-08-20 13:26:10.640779557 +0200
 +++ mariadb-10.2.8/scripts/CMakeLists.txt	2017-08-20 13:27:05.774925486 +0200
-@@ -338,6 +338,34 @@ ELSE()
+@@ -338,6 +338,35 @@ ELSE()
       )
    ENDFOREACH()
  
@@ -14,6 +14,7 @@ diff -up mariadb-10.2.8/scripts/CMakeLists.txt.p7 mariadb-10.2.8/scripts/CMakeLi
 +    mysql.service
 +    mysql@.service
 +    mysql-prepare-db-dir
++    mysql-wait-ready
 +    mysql-check-socket
 +    mysql-check-upgrade
 +    mysql-scripts-common

mariadb.spec

@@ -144,6 +144,7 @@ Source7:          README.mysql-license
 Source10:         mysql.tmpfiles.d.in
 Source11:         mysql.service.in
 Source12:         mysql-prepare-db-dir.sh
+Source13:         mysql-wait-ready.sh
 Source14:         mysql-check-socket.sh
 Source15:         mysql-scripts-common.sh
 Source16:         mysql-check-upgrade.sh
@@ -645,7 +646,7 @@ cat %{SOURCE52} | tee -a mysql-test/unstable-tests
 cat %{SOURCE53} | tee -a mysql-test/unstable-tests
 %endif
 
-cp %{SOURCE2} %{SOURCE3} %{SOURCE10} %{SOURCE11} %{SOURCE12} \
+cp %{SOURCE2} %{SOURCE3} %{SOURCE10} %{SOURCE11} %{SOURCE12} %{SOURCE13} \
    %{SOURCE14} %{SOURCE15} %{SOURCE16} %{SOURCE18} %{SOURCE19} \
    %{SOURCE70} scripts
 
@@ -844,6 +845,9 @@ install -p -m 755 scripts/mysql-prepare-db-dir %{buildroot}%{_libexecdir}/mysql-
 install -p -m 755 scripts/mysql-check-socket %{buildroot}%{_libexecdir}/mysql-check-socket
 install -p -m 755 scripts/mysql-check-upgrade %{buildroot}%{_libexecdir}/mysql-check-upgrade
 install -p -m 644 scripts/mysql-scripts-common %{buildroot}%{_libexecdir}/mysql-scripts-common
+%if %{with init_sysv}
+install -p -m 755 scripts/mysql-wait-ready %{buildroot}%{_libexecdir}/mysql-wait-ready
+%endif
 
 # install selinux policy
 %if %{with galera}
@@ -1354,6 +1358,9 @@ fi
 %{_libexecdir}/mysql-check-socket
 %{_libexecdir}/mysql-check-upgrade
 %{_libexecdir}/mysql-scripts-common
+%if %{with init_sysv}
+%{_libexecdir}/mysql-wait-ready
+%endif
 
 %{?with_init_systemd:%{_tmpfilesdir}/%{name}.conf}
 %attr(0755,mysql,mysql) %dir %{pidfiledir}
@@ -1450,6 +1457,7 @@ fi
   Resolves: #1403416
 - Support --defaults-group-suffix properly in systemd unit file
   Resolves: #1485777
+- Install mysql-wait-ready on RHEL-6 for the SysV init
 
 * Sun Aug 20 2017 Honza Horak <hhorak@redhat.com> - 3:10.2.8-1
 - Rebase to 10.2.8

mysql-wait-ready.sh

@@ -0,0 +1,45 @@
+#!/bin/sh
+
+source "`dirname ${BASH_SOURCE[0]}`/mysql-scripts-common"
+
+# This script waits for mysqld to be ready to accept connections
+# (which can be many seconds or even minutes after launch, if there's
+# a lot of crash-recovery work to do).
+# Running this as ExecStartPost is useful so that services declared as
+# "After mysqld" won't be started until the database is really ready.
+
+if [ $# -ne 1 ] ; then
+	echo "You need to pass daemon pid as an argument for this script."
+	exit 20
+fi
+
+# Service file passes us the daemon's PID (actually, mysqld_safe's PID)
+daemon_pid="$1"
+
+# Wait for the server to come up or for the mysqld process to disappear
+ret=0
+while /bin/true; do
+	# Check process still exists
+	if ! [ -d "/proc/${daemon_pid}" ] ; then
+	    ret=1
+	    break
+	fi
+	RESPONSE=`@bindir@/mysqladmin --no-defaults --socket="$socketfile" --user=UNKNOWN_MYSQL_USER ping 2>&1`
+	mret=$?
+	if [ $mret -eq 0 ] ; then
+	    break
+	fi
+	# exit codes 1, 11 (EXIT_CANNOT_CONNECT_TO_SERVICE) are expected,
+	# anything else suggests a configuration error
+	if [ $mret -ne 1 -a $mret -ne 11 ]; then
+            echo "Cannot check for @NICE_PROJECT_NAME@ Daemon startup because of mysqladmin failure." >&2
+	    ret=$mret
+	    break
+	fi
+	# "Access denied" also means the server is alive
+	echo "$RESPONSE" | grep -q "Access denied for user" && break
+
+	sleep 1
+done
+
+exit $ret