shell1（一键lnmp、监控mysql主从、批量创建用户）
1、一键查看服务器资源利用率
#!/bin/bash
function cpu() {
NUM=1
while [ $NUM -le 3 ]; do
util=`vmstat |awk '{if(NR==3)print 100-$15"%"}'`
user=`vmstat |awk '{if(NR==3)print $13"%"}'`
sys=`vmstat |awk '{if(NR==3)print $14"%"}'`
iowait=`vmstat |awk '{if(NR==3)print $16"%"}'`
echo "CPU - 使用率: $util , 等待磁盘IO响应使用率: $iowait"
let NUM++
sleep 1
done
}
function memory() {
total=`free -m |awk '{if(NR==2)printf "%.1f",$2/1024}'`
used=`free -m |awk '{if(NR==2) printf "%.1f",($2-$NF)/1024}'`
available=`free -m |awk '{if(NR==2) printf "%.1f",$NF/1024}'`
echo "内存 - 总大小: ${total}G , 使用: ${used}G , 剩余: ${available}G"
}
function disk() {
fs=$(df -h |awk '/^\/dev/{print $1}')
for p in $fs; do
mounted=$(df -h |awk '$1=="'$p'"{print $NF}')
size=$(df -h |awk '$1=="'$p'"{print $2}')
used=$(df -h |awk '$1=="'$p'"{print $3}')
used_percent=$(df -h |awk '$1=="'$p'"{print $5}')
echo "硬盘 - 挂载点: $mounted , 总大小: $size , 使用: $used , 使用率: $used_percent"
done
}
function tcp_status() {
summary=$(ss -antp |awk '{status[$1]++}END{for(i in status) printf i":"status[i]" "}')
echo "TCP连接状态 - $summary"
}
cpu
memory
disk
tcp_status
2、简单系统工具
#!/bin/bash
# system tools
# v1
menu() {
cat <<-EOF
+-----------------------------------+
H：help of menu
F：display disk partition
D：filesystem mount
M：memory info
U：system load
I: check to see if all hosts
Q：exit
+-----------------------------------+
EOF
}
mem_use() {
mem_used=`free -m | grep "^Mem" | awk '{print $3}'`
mem_total=`free -m | grep "^Mem" | awk '{print $2}'`
mem_percent=$((mem_used*100/mem_total))
echo "${mem_percent}%"
}
ip_check() {
for i in {2..20}
do
ip=192.168.8.$i
ping -c 1 -w1 $ip &>/dev/null
if [ $? -eq 0 ];then
echo "$ip" >>/tmp/ip_online.txt
else
echo "$ip" >>/tmp/ip_notonline.txt
fi
done
}
while :
do
menu
read -p "please choose:" action
case "$action" in
h|H)
menu
;;
f|F)
fdisk -l
disk_info=`df -h | grep "/$" | awk '{print $(NF-1)}'`
echo "磁盘剩余空间为：$disk_info"
;;
d|D)
mount
;;
m|M)
free -m
mem=$(mem_use)
echo "剩余内存百分比为：$mem"
;;
u|U)
uptime
;;
q|Q)
break
;;
I|i)
ip_check
if [ $? -eq 0 ];then
echo "check finish"
else
echo "eheck fiald"
fi
;;
"")
echo "请重新输入！！"
;;
*)
menu
esac
done
3、tomcat启动脚本
#!/bin/bash JAVA_HOME=/usr/local/jdk1.8/ JAVA_BIN=/usr/local/jdk1.8/bin JRE_HOME=/usr/local/jdk1.8/jre PATH=$PATH:/usr/local/jdk1.8/bin:/usr/local/jdk1.8/jre/bin CLASSPATH=/usr/local/jdk1.8/jre/lib:/usr/local/jdk1.8/lib:/usr/local/jdk1.8/jre/lib/charsets.jar TOMCAT_BIN=/usr/local/tomcat/bin RETVAL=0 prog="Tomcat" start() { echo "Starting $prog......" /bin/bash $TOMCAT_BIN/startup.sh RETVAL=$? return $RETVAL } stop() { echo "Stopping $prog......" /bin/bash $TOMCAT_BIN/shutdown.sh RETVAL=$? return $RETVAL } restart(){ echo "Restarting $prog......" stop start } case "$1" in start) start ;; stop) stop ;; restart) restart ;; *) echo $"Usage: $0 {start|stop|restart}" RETVAL=1 esac exit $RETVAL
自动发布 Java 项目（Tomcat）
#!/bin/bash
DATE=$(date +%F_%T)
TOMCAT_NAME=$1
TOMCAT_DIR=/usr/local/$TOMCAT_NAME
ROOT=$TOMCAT_DIR/webapps/ROOT
BACKUP_DIR=/data/backup
WORK_DIR=/tmp
PROJECT_NAME=tomcat-java-demo
# 拉取代码
cd $WORK_DIR
if [ ! -d $PROJECT_NAME ]; then
git clone [url=https://github.com/lizhenliang/tomcat-java-demo]https://github.com/lizhenliang/tomcat-java-demo[/url]
cd $PROJECT_NAME
else
cd $PROJECT_NAME
git pull
fi
# 构建
mvn clean package -Dmaven.test.skip=true
if [ $? -ne 0 ]; then
echo "maven build failure!"
exit 1
fi
# 部署
TOMCAT_PID=$(ps -ef |grep "$TOMCAT_NAME" |egrep -v "grep|$$" |awk 'NR==1{print $2}')
[ -n "$TOMCAT_PID" ] && kill -9 $TOMCAT_PID
[ -d $ROOT ] && mv $ROOT $BACKUP_DIR/${TOMCAT_NAME}_ROOT$DATE
unzip $WORK_DIR/$PROJECT_NAME/target/*.war -d $ROOT
$TOMCAT_DIR/bin/startup.sh
4、统计内存使用
1 #!/bin/bash 2 count=0 3 # 这个循环会遍历出每个进程占用的内存大小 4 for i in `ps aux |awk '{print $6}' |grep -v 'RSS'` 5 do 6 # 将遍历出来的数字进行累加 7 count=$[$count+$i] 8 done 9 # 就得到所有进程占用内存大小的和了 10 echo "$count/kb" 11 12 或者 ps aux |grep -v 'RSS TTY' |awk '{sum=sum+$6};END{print sum}'
5、备份数据库
#!/bin/bash PATH=$PATHi:/usr/local/mysql/bin week=`date +%w` today=`date +d` passwd="123456" backdir="/data/mysql" r_backupIP="192.168.123.30::backup" exec 1>/var/log/mysqlbak.log 2>/var/log/mysqlbak.log echo "mysql backup begin at `date +%F %T`." # 本地备份 mysqldump -uroot -p$passwd --default-character-set=utf8 discuz >$backdir/$week.sql # 同步备份到远程机器 rsync -az $backdir/$week.sql $r_backupIP/$today.sql echo "mysql backup end at `date +%F %T`." 然后加入cron 0 3 * * * /bin/bash /usr/local/sbin/mysqlbak.sh
6、自动重启php-fpm服务
#!/bin/bash
access_log="/data/log/access.log"
N=10
while :
do
# 因为10秒大概产生300条日志记录
tail -n300 $access_log > /tmp/log
# 拿出log中包含502的日志行数
n_502=`grep -c "502" /tmp/log`
# 如果行数大于10
if [ $n_502 -ge $N ]
then
# 就记录一下系统状态
top -bn1 > /tmp/`date +%H%M%S`-top.log
vmstat 1 5 > /tmp/`date +%H%M%S`-vm.log
# 然后才重启服务，并把错误信息重定向
/etc/init.d/php-fpm restart 2> /dev/null
# 重启php-fpm服务后，应先暂缓1分钟，而后继续每隔10s检测一次
sleep(60)
fi
sleep(10)
done
7、禁止恶意访问ip
#!/bin/bash
## 日志文件路径
log_file="/home/logs/client/access.log"
## 当前时间减一分钟的时间
d1=`date -d "-1 minute" +%H:%M`
## 当前时间的分钟段
d2=`date +%M`
## iptables命令所在的路径
ipt="/sbin/iptables"
## 用于存储访问日志里的ip
ips="/tmp/ips.txt"
## 封ip
block(){
## 把日志文件中的ip过滤出来，去掉重复的ip，并统计ip的重复次数以及对ip进行排序，最后将结果写到一个文件中
grep "$d1:" $log_file |awk '{print $1}' |sort -n |uniq -c |sort -n > $ips
## 将文件里重复次数大于100的ip迭代出来
for ip in `awk '$1 > 100 {print $2}' $ips`
do
## 通过防火墙规则对这些ip进行封禁
$ipt -I INPUT -p -tcp --dport 80 -s $ip -j REJECT
## 将已经封禁的ip输出到一个文件里存储
echo "`date +%F-%T` $ip" >> /tmp/badip.txt
done
}
## 解封ip
unblock(){
## 将流量小于15的规则索引过滤出来
for i in `$ipt -nvL --line-number |grep '0.0.0.0/0' |awk '$2 < 15 {print $1}' |sort -nr`
do
## 通过索引来删除规则
$ipt -D INPUT $i
done
## 清空规则中的数据包计算器和字节计数器
$ipt -Z
}
## 为整点或30分钟就是过了半个小时，就需要再进行分析
if [ $d2 == "00" ] || [ $d2 == "30" ]
then
unblock
block
else
block
fi
8、统计常用命令
sort /root/.bash_history |uniq -c |sort -nr |head -10 （-n 依照数值的大小排序 -r 以降序来排序）
9、系统-批量杀进程
ps aux |grep clearmem.sh |grep -v grep|awk '{print $2}'|xargs kill
10、监控mysql服务
假设，当前MySQL服务的root密码为123456，写脚本检测MySQL服务是否正常（比如，可以正常进入mysql执行show processlist），并检测一下当前的MySQL服务是主还是从，如果是从，请判断它的主从服务是否异常。如果是主，则不需要做什么。 #!/bin/bash Mysql_c="mysql -uroot -p123456" $Mysql_c -e "show processlist" >/tmp/mysql_pro.log 2>/tmp/mysql_log.err n=`wc -l /tmp/mysql_log.err|awk '{print $1}'` if [ $n -gt 0 ] then echo "mysql service sth wrong." else $Mysql_c -e "show slave status\G" >/tmp/mysql_s.log n1=`wc -l /tmp/mysql_s.log|awk '{print $1}'` if [ $n1 -gt 0 ] then y1=`grep 'Slave_IO_Running:' /tmp/mysql_s.log|awk -F : '{print $2}'|sed 's/ //g'` y2=`grep 'Slave_SQL_Running:' /tmp/mysql_s.log|awk -F : '{print $2}'|sed 's/ //g'` if [ $y1 == "Yes" ] && [ $y2 == "Yes" ] then echo "slave status good." else echo "slave down." fi fi fi
监控 MySQL 主从同步状态是否异常脚本
#!/bin/bash
HOST=localhost
USER=root
PASSWD=123.com
IO_SQL_STATUS=$(mysql -h$HOST -u$USER -p$PASSWD -e 'show slave status\G' 2>/dev/null |awk '/Slave_.*_Running:/{print $1$2}')
for i in $IO_SQL_STATUS; do
THREAD_STATUS_NAME=${i%:*}
THREAD_STATUS=${i#*:}
if [ "$THREAD_STATUS" != "Yes" ]; then
echo "Error: MySQL Master-Slave $THREAD_STATUS_NAME status is $THREAD_STATUS!" |mail -s "Master-Slave Staus" [url=mailto:xxx@163.com]xxx@163.com[/url]
fi
done
11、抽签脚本
while : do read -p "Please input a name:" name if [ -f /work/test/1.log ];then bb=`cat /work/test/1.log | awk -F: '{print $1}' | grep "$name"` if [ "$bb" != "$name" ];then #名字不重复情况下 aa=`echo $RANDOM | awk -F "" '{print $2 $3}'` while : do dd=`cat /work/test/1.log | awk -F: '{print $2}' | grep "$aa"` if [ "$aa" == "$dd" ];then #数字已经存在情况下 echo "数字已存在." aa=`echo $RANDOM | awk -F "" '{print $2 $3}'` else break fi done echo "$name:$aa" | tee -a /work/test/1.log else aa=`cat /work/test/1.log | grep "$name" | awk -F: '{print $2}'` #名字重复 echo $aa echo "重复名字." fi else aa=`echo $RANDOM | awk -F "" '{print $2 $3}'` echo "$name:$aa" | tee -a /work/test/1.log fi done
12、检测脚本是否有误
#!/bin/bash sh -n $1 2>/tmp/err （$1指某一个具体脚本） if [ $? -eq "0" ] then echo "The script is OK." else cat /tmp/err read -p "Please inpupt Q/q to exit, or others to edit it by vim. " n if [ -z $n ] then vim $1 exit fi if [ $n == "q" -o $n == "Q" ] then exit else vim $1 exit fi fi
13、判断cpu厂商
#!/bin/bash
m=`cat /proc/cpuinfo |grep vendor_id|awk -F":" '{print $2}'|tail -1`
if [ $m == "GenuineIntel" ]
then
echo "cpu is 英特尔"
elif [ $m == "AuthenticAMD" ]
then
echo "cpu is AMD"
else
echo "cpu is 非主流"
fi
14、调用其他shell脚本
[root@zjz ~]# vim a.sh
[root@zjz ~]# bash b.sh
hello zhangjingzhi
[root@zjz ~]# tail a.sh b.sh （对比）
==> a.sh <==
hello () {
echo hello zhangjingzhi
}
==> b.sh <==
. ./a.sh （调用a.sh,相对路径）
hello
15、批量创建 100 用户并设置密码脚本
#!/bin/bash
DATE=$@
USER_FILE=user.txt
for USER in $USER_LIST; do
if ! id $USER &>/dev/null; then
PASS=$(echo $RANDOM |md5sum |cut -c 1-8)
useradd $USER
echo $PASS |passwd --stdin $USER &>/dev/null
echo "$USER $PASS" >> $USER_FILE
echo "$USER User create successful."
else
echo "$USER User already exists!"
fi
done
16、批量检测网站是否异常脚本
#!/bin/bash
URL_LIST="www.baidu.com [url=http://www.ctnrs.com]www.ctnrs.com[/url]"
for URL in $URL_LIST;do
FAIL_COUNT=0
for ((i=1;i<=3;i++)); do
HTTP_CODE=$(curl -o /dev/null --connect-timeout 3 -s -w "%{http_code}" $URL)
if [[ $HTTP_CODE -eq 200 ]]; then
echo "$URL OK"
break
else
echo "$URL retry $FAIL_COUNT"
let FAIL_COUNT++
fi
done
if [ $FAIL_COUNT -eq 3 ]; then
echo "Warning: $URL Access failure!"
fi
done
17、一键部署 LNMP 网站平台脚本
#!/bin/bash
NGINX_V=1.15.6
PHP_V=5.6.36
TMP_DIR=/tmp
INSTALL_DIR=/usr/local
PWD_C=$PWD
echo
echo -e "\tMenu\n"
echo -e "1. Install Nginx"
echo -e "2. Install PHP"
echo -e "3. Install MySQL"
echo -e "4. Deploy LNMP"
echo -e "9. Quit"
function command_status_check() {
if [ $? -ne 0 ]; then
echo $1
exit
fi
}
function install_nginx() {
cd $TMP_DIR
yum install -y gcc gcc-c++ make openssl-devel pcre-devel wget
wget [url=http://nginx.org/download/nginx-]http://nginx.org/download/nginx-[/url]${NGINX_V}.tar.gz
tar zxf nginx-${NGINX_V}.tar.gz
cd nginx-${NGINX_V}
./configure --prefix=$INSTALL_DIR/nginx \
--with-http_ssl_module \
--with-http_stub_status_module \
--with-stream
command_status_check "Nginx - 平台环境检查失败！"
make -j 4
command_status_check "Nginx - 编译失败！"
make install
command_status_check "Nginx - 安装失败！"
mkdir -p $INSTALL_DIR/nginx/conf/vhost
alias cp=cp ; cp -rf $PWD_C/nginx.conf $INSTALL_DIR/nginx/conf
rm -rf $INSTALL_DIR/nginx/html/*
echo "ok" > $INSTALL_DIR/nginx/html/status.html
echo '<?php echo "ok"?>' > $INSTALL_DIR/nginx/html/status.php
$INSTALL_DIR/nginx/sbin/nginx
command_status_check "Nginx - 启动失败！"
}
function install_php() {
cd $TMP_DIR
yum install -y gcc gcc-c++ make gd-devel libxml2-devel \
libcurl-devel libjpeg-devel libpng-devel openssl-devel \
libmcrypt-devel libxslt-devel libtidy-devel
wget [url=http://docs.php.net/distributions/php-]http://docs.php.net/distributions/php-[/url]${PHP_V}.tar.gz
tar zxf php-${PHP_V}.tar.gz
cd php-${PHP_V}
./configure --prefix=$INSTALL_DIR/php \
--with-config-file-path=$INSTALL_DIR/php/etc \
--enable-fpm --enable-opcache \
--with-mysql --with-mysqli --with-pdo-mysql \
--with-openssl --with-zlib --with-curl --with-gd \
--with-jpeg-dir --with-png-dir --with-freetype-dir \
--enable-mbstring --enable-hash
command_status_check "PHP - 平台环境检查失败！"
make -j 4
command_status_check "PHP - 编译失败！"
make install
command_status_check "PHP - 安装失败！"
cp php.ini-production $INSTALL_DIR/php/etc/php.ini
cp sapi/fpm/php-fpm.conf $INSTALL_DIR/php/etc/php-fpm.conf
cp sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
chmod +x /etc/init.d/php-fpm
/etc/init.d/php-fpm start
command_status_check "PHP - 启动失败！"
}
read -p "请输入编号：" number
case $number in
1)
install_nginx;;
2)
install_php;;
3)
install_mysql;;
4)
install_nginx
install_php
;;
9)
exit;;
esac
18、批量创建 100 用户并设置密码脚本
#!/bin/bash
DATE=$@
USER_FILE=user.txt
for USER in $USER_LIST; do
if ! id $USER &>/dev/null; then
PASS=$(echo $RANDOM |md5sum |cut -c 1-8)
useradd $USER
echo $PASS |passwd --stdin $USER &>/dev/null
echo "$USER $PASS" >> $USER_FILE
echo "$USER User create successful."
else
echo "$USER User already exists!"
fi
done
