shell編程實戰20

1. 部署mysql主從

#!/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 出錯了。" exit 1 fi } f_exist() { d=`date +%F%T` if [ -f $1 ] then mv $1 $1_$d fi } ## 設置主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 "主上重啓mysql" ## 登陸mysql，受權用戶、鎖表以及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}'` ## 建立在從上配置和操做的腳本 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 "從上重啓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 ## 建立傳輸slave.sh的expect腳本 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@$slave_ip:/tmp/slave.sh expect { "yes/no" { send "yes\r"} "password:" { send "\$passwd\r" } } expect eof EOF ## 執行expect腳本 chmod +x /tmp/rs_slave.expect /tmp/rs_slave.expect check_ok "傳輸slave.sh" ## 建立遠程執行命令的expect腳本 f_exist /tmp/exe.expect cat > /tmp/exe.expect <<EOF #!/usr/bin/expect set passwd "aminglinux" spawn ssh root@$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 ## 執行expect腳本 chmod +x /tmp/exe.expect /tmp/exe.expect check_ok "遠程執行slave.sh" ## 主上解鎖表 $mysqlc -e "unlock tables"

2. 管理docker

#!/bin/bash while true do read -p "請輸入你要執行的操做：(stop/start/rm) " opt if [ -z "$opt" ] then echo "請輸入要執行的操做。" continue else break fi done ## 容器的id存放到一個臨時文件裏，方便後續遍歷 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 $id done rm) for id in `cat /tmp/id.txt` do read -p "將要刪除容器$id，是否繼續？(y|n)" c case $c in y|Y) docker rm -f $id ;; n|N) echo "容器$id不會被刪除。" ;; *) echo "你只能輸入'y'或者'n'。" ;; esac done *) echo "你只能輸入start/stop/rm。" ;; esac

3. 安裝配置samba

#!/bin/bash if [ $# -ne 1 ] then echo "運行腳本的格式爲：$0 /dir/" exit 1 else if ! echo $1 |grep -q '^/.*' then echo "請提供一個絕對路徑。" exit 1 fi fi if ! rpm -q samba >/dev/null then echo "將要安裝samba" sleep 1 yum install -y samba if [ $? -ne 0 ] then echo "samba安裝失敗" 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 #假設系統爲CentOS7 systemctl start smb if [ $? -ne 0 ] then echo "samba服務啓動失敗，請檢查配置文件是否正確。" else echo "samba配置完畢，請驗證。" fi

4. 批量查看多臺機器負載

　

5. 自動掛雲盤