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Memcached启动脚本
# 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 $PIDFILE RETVAL=$"Shutting down memcached......" /sbin/killproc $BINFILE RETVAL=$"Reloading memcached......" /sbin/killproc $BINFILE -HUP RETVAL=$"$1" in start) start ;; stop) stop ;; restart) restart ;; condrestart) [ -e $LOCKFILE ] && restart RETVAL=$"Usage: $0 {start|stop|restart|condrestart|status}" RETVAL=1 esac
exit $RETVAL # chmod +x /etc/init.d/memcached # chkconfig --add memcached # chkconfig --level 235 memcached on # service memcached start
binlog 自动清理脚本
# vim /data/scripts/delete_mysql_binlog.sh
#!/bin/bash #======================================================================================= # 用于删除 MySQL Master 端已经同步完的 binlog【需在 Master 端运行】,以减少磁盘空间 # 每天凌晨 5:30 分运行一次 # # 注:需在 Slave 端添加允许 Master 端访问的帐号【帐号:check_binlog,密码:binlog_2356】 # 运行于 MySQL Master 端【目前只用于一主一从的同步模式,对于多从的情况暂时未考虑】 #======================================================================================= PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin ## Slave端连接信息 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状态信息查看命令 SQLCMD="show slave status" #======================================================================================= ## 检查MySQL是否已经运行 if [[ `ps aux | grep mysql[d] | wc -l` -eq 0 ]]; then echo The MySQL is not running at: `date +%F" "%H-%M-%S` ${LOGFILE} exit 1 fi ## 测试Slave端的连通性 nohup mysqladmin -h${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` ${LOGFILE} exit 1 fi ## 检查是否合法的Slave MASTER_ADDR=`mysql -h${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` ${LOGFILE} exit 1 fi ## 获得Slave端信息,以此来确定是否处于正常同步的情况 IO_STATUS=`mysql -h${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` ${LOGFILE} exit 1 fi ## 再做一次判断,以保证数据同步绝对正常【创建测试数据】 mysql -uroot -e "create database if not exists mytestdb;" sleep 3 retval=`mysql -h${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` ${LOGFILE} exit 1 fi ## 在已经同步的情况,还需要判断当前同步的binlog,以此来确定哪些已经是过期的binlog SLAVE_BINLOG1=`mysql -h${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}'` ## 获得Master端,当前的binlog文件以及binlog路径 MASTER_BINLOG=`mysql -uroot -e "show master status;" | grep -v '^+' | tail -1 | awk '{print $1}'` ## 主从端已经同步到相同的binlog if [[ "${SLAVE_BINLOG1}" = "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" = "${MASTER_BINLOG}" ]]; then CURR_BINLOG="${MASTER_BINLOG}" ## 主从端已经同步,但从端的binlog还没有追赶到主端最新的binlog elif [[ "${SLAVE_BINLOG1}" = "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" != "${MASTER_BINLOG}" ]]; then CURR_BINLOG="${SLAVE_BINLOG1}" ## 主从端已经同步,主从端的binlog一致,但relaylog还不一致 elif [[ "${SLAVE_BINLOG1}" != "${SLAVE_BINLOG2}" && "${SLAVE_BINLOG1}" = "${MASTER_BINLOG}" ]]; then CURR_BINLOG="${SLAVE_BINLOG2}" else echo Has noknown error at:`date +%F" "%H-%M-%S` ${LOGFILE} exit 1 fi mysql -uroot -e "purge binary logs to '${CURR_BINLOG}';" if [[ $" "%H-%M-%S` ${LOGFILE} fi
# crontab -e 30 05 * * * /data/scripts/delete_mysql_binlog.sh >/dev/null 2>&1
修复MySQL主从同步
#!/bin/sh PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin LOGFILE=/data/repair_mysql_sync_`date +%F`.log SQLCMD1="show slave status" ## 查看MySQL是否已启动 if [[ `ps aux | grep mysqld | grep -v grep`"X" = "X" ]]; then echo The MySQL is not running at: `date +%F" "%H-%M-%S` ${LOGFILE} exit 1 fi ## 获得MySQL从端Relay binlog的路径 retval=`grep "^relay-log" /etc/my.cnf | grep -v relay-log- | grep '/'` if [[ "${retval}" = "X" ]]; then RELAY_BINLOG_PATH=`ps aux | grep -w mysqld | grep -v grep | awk '{print $13}' | awk -F '=' '{print $2}'` else RELAY_BINLOG_PATH=`dirname $(echo ${retval} | awk -F '=' '{print $2}')` fi ## 查找master.info文件,用于定位Binlog信息 MASTER_FILE=`ps aux | grep -w mysqld | grep -v grep | awk '{print $13}' | awk -F '=' '{print $2}'`/master.info if [[ ! -e ${MASTER_FILE} ]]; then echo This Server is not MySQL Slave at: `date +%F" "%H-%M-%S` ${LOGFILE} exit 1 fi ## 获得当前的同步状态 IO_STATUS=`mysql -uroot -e "${SQLCMD1}\G;" | awk '$1=="Slave_IO_Running:" {print $2}'` SQL_STATUS=`mysql -uroot -e "${SQLCMD1}\G;" | awk '$1=="Slave_SQL_Running:" {print $2}'` if [[ "${IO_STATUS}" = "Yes" && "${SQL_STATUS}" = "Yes" ]]; then echo Now, The MySQL Replication is synchronous at: `date +%F" "%H-%M-%S` ${LOGFILE} exit 0 fi ## 从master.info文件中,获得MySQL主端的同步信息 REPLI_INFO=`sed '/^$/d' ${MASTER_FILE} | tail +2 | head -5` REPLI_BINLOG_FILE=`echo ${REPLI_INFO} | awk '{print $1}'` REPLI_IPADDR=`echo ${REPLI_INFO} | awk '{print $3}'` REPLI_USER=`echo ${REPLI_INFO} | awk '{print $4}'` REPLI_PWD=`echo ${REPLI_INFO} | awk '{print $5}'` ## 删除无用的Relay binlog rm -rf ${RELAY_BINLOG_PATH}/*-relay-bin.* ## 直接从0位置开始同步 SQLCMD2="change master to master_host='${REPLI_IPADDR}', master_user='${REPLI_USER}', master_password='${REPLI_PWD}'," SQLCMD2="${SQLCMD2} master_log_file='${REPLI_BINLOG_FILE}', master_log_pos=0" mysql -uroot -e "stop slave;" mysql -uroot -e "${SQLCMD2};" mysql -uroot -e "start slave;" ## 如果同步的过程中,出现重复记录导致同步失败,就跳过 while true do sleep 2 IO_STATUS=`mysql -uroot -e "${SQLCMD1}\G;" | awk '$1=="Slave_IO_Running:" {print $2}'` SQL_STATUS=`mysql -uroot -e "${SQLCMD1}\G;" | awk '$1=="Slave_SQL_Running:" {print $2}'` BEHIND_STATUS=`mysql -uroot -e "${SQLCMD1}\G;" | awk '$1=="Seconds_Behind_Master:" {print $2}'` SLAVE_BINLOG1=`mysql -uroot -e "${SQLCMD1}\G;" | awk '$1=="Master_Log_File:" {print $2}'` SLAVE_BINLOG2=`mysql -uroot -e "${SQLCMD1}\G;" | awk '$1=="Relay_Master_Log_File:" {print $2}'` ## 出现错误,就将错误信息记录到日志文件,并跳过错误继续同步 if [[ "${IO_STATUS}" != "Yes" || "${SQL_STATUS}" != "Yes" ]]; then ERRORINFO=`mysql -uroot -e "${SQLCMD1}\G;" | awk -F ': ' '$1=="Last_Error" {print $2}'` echo "The MySQL synchronous error information: ${ERRORINFO}" ${LOGFILE} mysql -uroot -e "stop slave;" mysql -uroot -e "set GLOBAL SQL_SLAVE_SKIP_COUNTER=1;" mysql -uroot -e "start slave;" ## 已完成同步,就正常退出 elif [[ "${IO_STATUS}" = "Yes" && "${SQL_STATUS}" = "Yes" && "${SLAVE_BINLOG1}" = "${SLAVE_BINLOG2}" && ${BEHIND_STATUS} -eq 0 ]]; then echo The MySQL synchronous is ok at: `date +%F" "%H-%M-%S` ${LOGFILE} break fi done
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MySQL,shell
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暂无MySQL的一些功能实用的Linux shell脚本分享的评论...
稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!
昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。
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而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?
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