# !/bin/bash DATE=$(date +%d/%b/%Y:%H:%M) LOG_FILE=/usr/local /nginx/logs/demo2.access.log ABNORMAL_IP=$(tail -n5000 $LOG_FILE |grep $DATE |awk '{a[$1]++}END{for(i in a)if(a[i]>10)print i}' ) for IP in $ABNORMAL_IP ; do if [ $(iptables -vnL |grep -c "$IP " ) -eq 0 ]; then iptables -I INPUT -s $IP -j DROP echo "$(date +'%F_%T') $IP " >> /tmp/drop_ip.log fi done
# yum install mailx # vi /etc/mail.rc set from=baojingtongzhi@163 .com smtp=smtp.163 .com set smtp-auth-user=baojingtongzhi@163 .com smtp-auth-password=123456 set smtp-auth=login
# !/bin/bash DATE=$(date +%F_%H-%M-%S) HOST=localhost USER=backup PASS=123.com BACKUP_DIR=/data/db_backup DB_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "show databases;" 2>/dev/null |egrep -v "Database|information_schema|mysql|performance_schema|sys" ) for DB in $DB_LIST ; do BACKUP_NAME=$BACKUP_DIR /${DB} _${DATE} .sql if ! mysqldump -h$HOST -u$USER -p$PASS -B $DB > $BACKUP_NAME 2>/dev/null; then echo "$BACKUP_NAME 备份失败!" fi done
# !/bin/bash DATE=$(date +%F_%H-%M-%S) HOST=localhost USER=backup PASS=123.com BACKUP_DIR=/data/db_backup DB_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "show databases;" 2>/dev/null |egrep -v "Database|information_schema|mysql|performance_schema|sys" ) for DB in $DB_LIST ; do BACKUP_DB_DIR=$BACKUP_DIR /${DB} _${DATE} [ ! -d $BACKUP_DB_DIR ] && mkdir -p $BACKUP_DB_DIR &>/dev/null TABLE_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "use $DB ;show tables;" 2>/dev/null) for TABLE in $TABLE_LIST ; do BACKUP_NAME=$BACKUP_DB_DIR /${TABLE} .sql if ! mysqldump -h$HOST -u$USER -p$PASS $DB $TABLE > $BACKUP_NAME 2>/dev/null; then echo "$BACKUP_NAME 备份失败!" fi done done
# !/bin/bash LOG_DIR=/usr/local /nginx/logs YESTERDAY_TIME=$(date -d "yesterday" +%F) LOG_MONTH_DIR=$LOG_DIR /$(date +"%Y-%m" ) LOG_FILE_LIST="default.access.log" for LOG_FILE in $LOG_FILE_LIST ; do [ ! -d $LOG_MONTH_DIR ] && mkdir -p $LOG_MONTH_DIR mv $LOG_DIR /$LOG_FILE $LOG_MONTH_DIR /${LOG_FILE} _${YESTERDAY_TIME} done kill -USR1 $(cat /var/run/nginx.pid)
# remote_addr - $remote_user [$time_local ] " $request " $status $body_bytes_sent " $http_referer " " $http_user_agent " " $http_x_forwarded_for " LOG_FILE=$1 echo "统计访问多的10个IP" awk '{a[$1]++}END{print "UV:",length(a);for(v in a)print v,a[v]}' $LOG_FILE |sort -k2 -nr |head -10 echo "----------------------" echo "统计时间段访问多的IP" awk '$4>="[01/Dec/2018:13:20:25" && $4<="[27/Nov/2018:16:20:49"{a[$1]++}END{for(v in a)print v,a[v]}' $LOG_FILE |sort -k2 -nr|head -10 echo "----------------------" echo "统计访问多的10个页面" awk '{a[$7]++}END{print "PV:",length(a);for(v in a){if(a[v]>10)print v,a[v]}}' $LOG_FILE |sort -k2 -nr echo "----------------------" echo "统计访问页面状态码数量" awk '{a[$7" "$9]++}END{for(v in a){if(a[v]>5)print v,a[v]}}'
# !/bin/bash NIC=$1 echo -e " In ------ Out" while true ; do OLD_IN=$(awk '$0~"' $NIC '"{print $2}' /proc/net/dev) OLD_OUT=$(awk '$0~"' $NIC '"{print $10}' /proc/net/dev) sleep 1 NEW_IN=$(awk '$0~"' $NIC '"{print $2}' /proc/net/dev) NEW_OUT=$(awk '$0~"' $NIC '"{print $10}' /proc/net/dev) IN=$(printf "%.1f%s" "$((($NEW_IN-$OLD_IN) /1024))" "KB/s" ) OUT=$(printf "%.1f%s" "$((($NEW_OUT-$OLD_OUT) /1024))" "KB/s" ) echo "$IN $OUT " sleep 1 done
# /bin/bash # 设置时区并同步时间 ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime if ! crontab -l |grep ntpdate &>/dev/ null ; then (echo "* 1 * * * ntpdate time.windows.com >/dev/null 2>&1" ;crontab -l) |crontab fi # 禁用selinux sed -i '/SELINUX/{s/permissive/disabled/}' /etc/selinux/config # 关闭防火墙 if egrep "7.[0-9]" /etc/redhat-release &>/dev/ null ; then systemctl stop firewalld systemctl disable firewalld elif egrep "6.[0-9]" /etc/redhat-release &>/dev/ null ; then service iptables stop chkconfig iptables off fi # 历史命令显示操作时间 if ! grep HISTTIMEFORMAT /etc/bashrc; then echo 'export HISTTIMEFORMAT="%F %T `whoami` "' >> /etc/ bashrc fi # SSH超时时间 if ! grep "TMOUT=600" /etc/profile &>/dev/ null ; then echo "export TMOUT=600" >> /etc/ profile fi # 禁止root远程登录 sed -i 's/#PermitRootLogin yes/PermitRootLogin no/' /etc/ssh/sshd_config # 禁止定时任务向发送邮件 sed -i 's/^MAILTO=root/MAILTO=""/' /etc/crontab # 设置大打开文件数 if ! grep "* soft nofile 65535" /etc/security/limits.conf &>/dev/ null ; then cat >> /etc/ security/limits.conf << EOF * soft nofile 65535 * hard nofile 65535 EOF fi # 系统内核优化 cat >> /etc/ sysctl.conf << EOF net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_max_tw_buckets = 20480 net.ipv4.tcp_max_syn_backlog = 20480 net.core.netdev_max_backlog = 262144 net.ipv4.tcp_fin_timeout = 20 EOF # 减少SWAP使用 echo "0" > /proc/ sys/vm/swappiness # 安装系统性能分析工具及其他 yum install gcc make autoconf vim sysstat net-tools iostat if
# !/bin/bash HOST_INFO=host.info for IP in $(awk '/^[^#]/{print $1}' $HOST_INFO ); do USER=$(awk -v ip=$IP 'ip==$1{print $2}' $HOST_INFO ) PORT=$(awk -v ip=$IP 'ip==$1{print $3}' $HOST_INFO ) TMP_FILE=/tmp/disk.tmp ssh -p $PORT $USER @$IP 'df -h' > $TMP_FILE USE_RATE_LIST=$(awk 'BEGIN{OFS="="}/^\/dev/{print $NF,int($5)}' $TMP_FILE ) for USE_RATE in $USE_RATE_LIST ; do PART_NAME=${USE_RATE%=*} USE_RATE=${USE_RATE#*=} if [ $USE_RATE -ge 80 ]; then echo "Warning: $PART_NAME Partition usage $USE_RATE %!" fi done done
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