Memcached啟動腳本
| # vim /etc/init.d/memcached |
| #!/bin/bash#=======================================================================================# chkconfig: - 80 12# description: Distributed memory caching daemon# processname: memcached#=======================================================================================IPADDR=`/sbin/ifconfig eth1 | awk -F ':' '/inet addr/{print $2}' | sed 's/[a-zA-Z ]//g'`PORT="11211"USER="root"SIZE="2048"CONNNUM="51200"PIDFILE="/var/run/memcached.pid"BINFILE="/usr/local/memcached/bin/memcached"LOCKFILE="/var/lock/subsys/memcached"RETVAL=0 start() { echo -n $"Starting memcached......" $BINFILE -d -l $IPADDR -p $PORT -u $USER -m $SIZE -c $CONNNUM -P $PIDFILE RETVAL=$? echo [ $RETVAL -eq 0 ] && touch $LOCKFILE return $RETVAL} stop() { echo -n $"Shutting down memcached......" /sbin/killproc $BINFILE RETVAL=$? echo [ $RETVAL -eq 0 ] && rm -f $LOCKFILE return $RETVAL} restart() { stop sleep 1 start} reload() { echo -n $"Reloading memcached......" /sbin/killproc $BINFILE -HUP RETVAL=$? echo return $RETVAL} case "$1" instart) start ;; stop) stop ;; restart) restart ;; condrestart) [ -e $LOCKFILE ] && restart RETVAL=$? ;; reload) reload ;; status) status $prog RETVAL=$? ;; *) echo "Usage: $0 {start|stop|restart|condrestart|status}" RETVAL=1esac |
| exit $RETVAL# chmod +x /etc/init.d/memcached# chkconfig --add memcached# chkconfig --level 235 memcached on# service memcached start |
binlog 自動清理腳本
| # vim /data/scripts/delete_mysql_binlog.sh |
| #!/bin/bash#=======================================================================================# 用于刪除 MySQL Master 端已經(jīng)同步完的 binlog【需在 Master 端運行】，以減少磁盤空間# 每天凌晨 5:30 分運行一次## 注：需在 Slave 端添加允許 Master 端訪問的帳號【帳號：check_binlog，密碼：binlog_2356】# 運行于 MySQL Master 端【目前只用于一主一從的同步模式，對于多從的情況暫時未考慮】#=======================================================================================PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin ## Slave端連接信息SLAVE_ADDR="XXX.XXX.XXX.XXX"SLAVE_USER="check_binlog"SLAVE_PWD="binlog_2356" LOGFILE="/data/logs/db_sync_info.log"PINGFILE="/tmp/mysqlping.log" ## MySQL狀態(tài)信息查看命令SQLCMD="show slave status" #=======================================================================================## 檢查MySQL是否已經(jīng)運行if [[ `ps aux | grep mysql[d] | wc -l` -eq 0 ]]; then echo The MySQL is not running at: `date +%F" "%H-%M-%S` >> ${LOGFILE} exit 1fi ## 測試Slave端的連通性nohup mysqladmin -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} ping > ${PINGFILE}retval=`grep "^error" ${PINGFILE}`rm -f ${PINGFILE}if [[ "${retval}X" != "X" ]]; then echo The MySQL Slave can not be connected at: `date +%F" "%H-%M-%S` >> ${LOGFILE} exit 1fi ## 檢查是否合法的SlaveMASTER_ADDR=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}/G;" | awk '$1=="Master_Host:" {print $2}'`LOCAL_ADDR=`/sbin/ifconfig eth1 | awk -F ':' '/inet addr/{print $2}' | sed 's/[a-zA-Z ]//g'`if [[ "${MASTER_ADDR}" != "${LOCAL_ADDR}" ]]; then echo The MySQL Slave is not lawful at: `date +%F" "%H-%M-%S` >> ${LOGFILE} exit 1fi ## 獲得Slave端信息，以此來確定是否處于正常同步的情況IO_STATUS=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}/G;" | awk '$1=="Slave_IO_Running:" {print $2}'`SQL_STATUS=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}/G;" | awk '$1=="Slave_SQL_Running:" {print $2}'`if [[ "${IO_STATUS}" != "Yes" || "${SQL_STATUS}" != "Yes" ]]; then echo The MySQL Replication is not synchronous at: `date +%F" "%H-%M-%S` >> ${LOGFILE} exit 1fi ## 再做一次判斷，以保證數(shù)據(jù)同步絕對正常【創(chuàng)建測試數(shù)據(jù)】mysql -uroot -e "create database if not exists mytestdb;"sleep 3 retval=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "show databases;" | grep mytestdb`mysql -uroot -e "drop database if exists mytestdb;"if [[ "${retval}X" = "X" ]]; then echo The MySQL Replication is not synchronous at: `date +%F" "%H-%M-%S` >> ${LOGFILE} exit 1fi ## 在已經(jīng)同步的情況，還需要判斷當前同步的binlog，以此來確定哪些已經(jīng)是過期的binlogSLAVE_BINLOG1=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}/G;" | awk '$1=="Master_Log_File:" {print $2}'`SLAVE_BINLOG2=`mysql -h${SLAVE_ADDR} -u${SLAVE_USER} -p${SLAVE_PWD} -e "${SQLCMD}/G;" | awk '$1=="Relay_Master_Log_File:" {print $2}'`## 獲得Master端，當前的binlog文件以及binlog路徑MASTER_BINLOG=`mysql -uroot -e "show master status;" | grep -v '^+' | tail -1 | awk '{print $1}'` ## 主從端已經(jīng)同步到相同的binlogif [[ "${SLAVE_BINLOG1}" = "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" = "${MASTER_BINLOG}" ]]; then CURR_BINLOG="${MASTER_BINLOG}" ## 主從端已經(jīng)同步，但從端的binlog還沒有追趕到主端最新的binlogelif [[ "${SLAVE_BINLOG1}" = "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" != "${MASTER_BINLOG}" ]]; then CURR_BINLOG="${SLAVE_BINLOG1}" ## 主從端已經(jīng)同步，主從端的binlog一致，但relaylog還不一致elif [[ "${SLAVE_BINLOG1}" != "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" = "${MASTER_BINLOG}" ]]; then CURR_BINLOG="${SLAVE_BINLOG2}" else echo Has noknown error at：`date +%F" "%H-%M-%S` >> ${LOGFILE} exit 1fi mysql -uroot -e "purge binary logs to '${CURR_BINLOG}';"if [[ $? -eq 0 ]]; then echo Clear MySQL binlog is ok at: `date +%F" "%H-%M-%S` >> ${LOGFILE}fi |
