我在xinetd 中使用percona-clustercheck（随 Percona 的 XtraDB Cluster 软件包一起提供），并且在尝试 curl clustercheck 服务时遇到错误。
/usr/bin/clustercheck：
#!/bin/bash
#
# Script to make a proxy (ie HAProxy) capable of monitoring Percona XtraDB Cluster nodes properly
#
# Author: Olaf van Zandwijk <olaf.vanzandwijk@nedap.com>
# Documentation and download: https://github.com/olafz/percona-clustercheck
#
# Based on the original script from Unai Rodriguez
#
MYSQL_USERNAME="clustercheckuser"
MYSQL_PASSWORD="clustercheckpassword!"
ERR_FILE="/dev/null"
AVAILABLE_WHEN_DONOR=0
#
# Perform the query to check the wsrep_local_state
#
WSREP_STATUS=`mysql --user=${MYSQL_USERNAME} --password=${MYSQL_PASSWORD} -e "SHOW STATUS LIKE 'wsrep_local_state';" 2>${ERR_FILE} …