shell编程实战20

#!/bin/bash
master_ip=192.168.100.12
slave_ip=192.168.100.13
mysqlc="mysql -uroot -paminglinux"

check_ok()
{
if [ $? -ne 0 ]
then
echo "$1 出错了。"
exit 1
fi
}

f_exist()
{
d=`date +%F%T`
if [ -f $1 ]
then
mv $1 $1_$d
fi
}

## 设置主mysql配置
if ! grep '^server-id' /etc/my.cnf
then
sed -i '/^\[mysqld\]$/a\server-id = 1001' /etc/my.cnf
fi

if ! grep '^log-bin.*=.*' /etc/my.cnf
then
sed -i '/^\[mysqld\]$/a\log-bin = aminglinux' /etc/my.cnf
fi

sed -i '/^log-bin.*/a\binlog-ignore-db = mysql ' /etc/my.cnf

/etc/init.d/mysqld restart
check_ok "主上重启mysql"

## 登录mysql，授权用户、锁表以及show master status。
$mysqlc <<EOF
grant replication slave on *.* to 'repl'@$slave_ip identified by 'yourpassword';
flush tables with read lock;
EOF
$mysqlc -e "show master status" > /tmp/master.log
file=`tail -1 /tmp/master.log|awk '{print $1}'`
pos=`tail -1 /tmp/master.log|awk '{print $2}'`

## 创建在从上配置和操作的脚本
f_exist /tmp/slave.sh

cat > /tmp/slave.sh << EOF
#!/bin/bash
if ! grep '^server-id' /etc/my.cnf
then
sed -i '/^\[mysqld\]$/a\server-id = 1002' /etc/my.cnf
fi

/etc/init.d/mysqld restart
check_ok "从上重启mysql"

$mysqlc <<EOF
stop slave;
change master to master_host="$master_ip", master_user="repl", master_password="yourpassword", master_log_file="$file", master_log_pos=$pos;
start slave;
EOF
EOF

## 创建传输slave.sh的expect脚本
f_exist /tmp/rs_slave.expect

cat > /tmp/rs_slave.expect <<EOF
#!/usr/bin/expect
set passwd "aminglinux"
spawn rsync -a /tmp/slave.sh root@$slave_ip:/tmp/slave.sh
expect {
"yes/no" { send "yes\r"}
"password:" { send "\$passwd\r" }
}
expect eof
EOF

## 执行expect脚本
chmod +x /tmp/rs_slave.expect
/tmp/rs_slave.expect
check_ok "传输slave.sh"

## 创建远程执行命令的expect脚本
f_exist /tmp/exe.expect

cat > /tmp/exe.expect <<EOF
#!/usr/bin/expect
set passwd "aminglinux"
spawn ssh root@$slave_ip
expect {
"yes/no" { send "yes\r"}
"password:" { send "\$passwd\r" }
}
expect "]*"
send "/bin/bash /tmp/slave.sh\r"
expect "]*"
send "exit\r"
EOF

## 执行expect脚本
chmod +x /tmp/exe.expect
/tmp/exe.expect
check_ok "远程执行slave.sh"

## 主上解锁表
$mysqlc -e "unlock tables"

#!/bin/bash

while true
do
read -p "请输入你要执行的操作：(stop/start/rm) " opt
if [ -z "$opt" ]
then
echo "请输入要执行的操作。"
continue
else
break
fi
done

## 容器的id存放到一个临时文件里，方便后续遍历
docker ps -a |awk '{print $1}' > /tmp/id.txt
case $opt in
stop)
for id in `cat /tmp/id.txt`
do
docker stop $id
done
;;
start)
for id in `cat /tmp/id.txt`
do
docker start $id
done
rm)
for id in `cat /tmp/id.txt`
do
read -p "将要删除容器$id，是否继续？(y|n)" c
case $c in
y|Y)
docker rm -f $id
;;
n|N)
echo "容器$id不会被删除。"
;;
*)
echo "你只能输入'y'或者'n'。"
;;
esac
done
*)
echo "你只能输入start/stop/rm。"
;;
esac

#!/bin/bash

if [ $# -ne 1 ]
then
echo "运行脚本的格式为：$0 /dir/"
exit 1
else
if ! echo $1 |grep -q '^/.*'
then
echo "请提供一个绝对路径。"
exit 1
fi
fi

if ! rpm -q samba >/dev/null
then
echo "将要安装samba"
sleep 1
yum install -y samba
if [ $? -ne 0 ]
then
echo "samba安装失败"
exit 1
fi
fi

cnfdir="/etc/samba/smb.conf"
cat >> $cnfdir <<EOF
[share]
comment = share all
path = $1
browseable = yes
public = yes
writable = no
EOF

if [ ! -d $1 ]
then
mkdir -p $1
fi

chmod 777 $1
echo "test" > $1/test.txt

#假设系统为CentOS7
systemctl start smb
if [ $? -ne 0 ]
then
echo "samba服务启动失败，请检查配置文件是否正确。"
else
echo "samba配置完毕，请验证。"
fi