From: Elan Ruusamäe <glen@delfi.ee>
Date: Mon, 22 Apr 2013 10:23:25 +0000 (+0300)
Subject: use mysqld.conf when fetching slave status
X-Git-Tag: auto/th/percona-server-5.7.19-17.1~107
X-Git-Url: http://git.pld-linux.org/gitweb.cgi?a=commitdiff_plain;h=ed3eec1bf2920f057c1571ccacb21dd2cdf9209d;p=packages%2Fpercona-server.git

use mysqld.conf when fetching slave status

we need -u mysql to get super privileges, this is the simpliest way (and
works by default in pld)

service mysql status gives such error
ERROR 1227 (42000) at line 1: Access denied; you need the SUPER,REPLICATION CLIENT privilege for this operation

which works fine from commandline if you have ~/.my.cnf specifing user=mysql:
$ mysql -S /var/lib/mysql/mysqldb/mysql.sock -e show slave status\G

fine tuning could add special user for this purpose only
---

diff --git a/mysql.init b/mysql.init
index 9327683..f5cc30f 100755
--- a/mysql.init
+++ b/mysql.init
@@ -359,7 +359,7 @@ mysqlstop() {
 # uses MYSQL_SOCKET - path to mysql socket
 slave_status() {
 	# see if slave status can be reported
-	local err=0 slave_status=$(mysql -S $MYSQL_SOCKET -e 'show slave status\G')
+	local err=0 slave_status=$(mysql --defaults-file="$MYSQL_CONFIG" --socket="$MYSQL_SOCKET" -e 'show slave status\G')
 	if [ -z "$slave_status" ]; then
 		# slave not setup
 		return
diff --git a/mysqld.conf b/mysqld.conf
index 9df699e..c4f7331 100644
--- a/mysqld.conf
+++ b/mysqld.conf
@@ -222,3 +222,8 @@ innodb_log_buffer_size=1M
 [mysqladmin]
 user        = mysql_sysadmin
 password    =
+
+# used by initscript to fetch slave status
+[mysql]
+user        = mysql
+password    =