通過Shell腳本來創建批量伺服器上的MySQL資料庫賬號

 1.項目背景

因監控需要，我們需要在既有的每個MySQL實例上創建一個賬號。公司有數百台 MySQL 實例，如果手動登入來創建賬號很麻煩，也不現實。所以，我們寫了一個簡單的shell腳本，用來創建批量伺服器的mysql 賬號。

 2.執行腳本內容;

#!/bin/bash
## 此段shell 腳本的主要功能是實現在多個SQL Server IP實例上，創建賬號。輸入參數是兩個，第一個是資料庫所在的IPs，即多個Server IP構成的字元串，IP間用逗號隔開。第二個參數是 埠（3306 或 3307）
##MySQL程式所在路徑--mysql bin 文件所在路徑；如果由建立軟連接，可直接是mysql
command_linebin="/data/mysql5720/bin/mysql"
##用來連接MySQ的賬號和密碼
username="DBA_MYSQLACC"
password="DBAACCTEST109211706DF"
## 新創建的賬號和密碼
createuid="testuid"
createpwd="testpwd"
##指定新創建的用戶在那個主機上可以登錄，如果是本地用戶可用localhost；如果指定規則的可以使用通配符%
phost="177.177.%"

mysqlserverIPs=$1
echo $mysqlserverIPs
## 按“,”分割，將字元串轉換為數組。
IParr=(${mysqlserverIPs//,/ })
echo $IParr

for ((i=0;i<${#IParr[@]};i++))
do
   IP=${IParr[$i]}
   echo "${IP}"
select_sql="select * from user where user=\"$createuid\""
msg=$(${command_linebin} -h ${IP}  -P $2 -u$username -p$password -s mysql -e "${select_sql}")

echo $msg

##創建賬號前，先檢查需要創建的賬號是否已經存在，如果已經存在了，則直接退出。
if [[ $msg = "" ]] ;then
   echo $(date -d today +"%Y%m%d%H%M%S")  $mip  "The Condition is OK,permit to create UID."
else
    echo $(date -d today +"%Y%m%d%H%M%S")  $IP  "The UID you want create has been exited, please check it! The Act Quit!"
    exit
 fi

## 以下幾行代碼是創建的關鍵
${command_linebin} -h ${IP} -P $2  -u$username -p$password -s mysql <<EOF

CREATE USER '$createuid'@'$phost' IDENTIFIED BY '$createpwd';


GRANT Select,PROCESS ON *.* TO '$createuid'@'$phost';


flush privileges;


EOF

##創建後，再次檢查賬號看否已將存在。如果不存在，則說明創建失敗，直接退出。
select_sql="select * from user where user=\"$createuid\""
msg=$(${command_linebin} -h ${IP}  -P $2 -u$username -p$password -s mysql -e "${select_sql}")
echo $msg


if [[ $msg = "" ]] ;then
   echo $(date -d today +"%Y%m%d%H%M%S")  ${IP}  "The action to create UID Error,Please Check it! The Act Quit! "
   exit
else
    echo $(date -d today +"%Y%m%d%H%M%S")  ${IP}  "Congratulation! Create UID successful"
 fi


done

3. 執行舉例

Step 1 將代碼放置到執行文件中，可執行文件命名為 mysql_CreateUIDMulti.sh

Step 2 請對此文件授予可執行許可權，否則，提示以下錯誤。

Step 3 執行的具體命令（參數格式），例如 在 177.177.XXX.128,177.177.XXX.144 兩個 3306的實例上創建賬號

./mysql_CreateUIDMulti.sh 177.177.XXX.128,177.177.XXX.144 3306

Step 4 列印的執行結果如下

177.177.XXX.128,177.177.XXX.144
177.177.XXX.128
177.177.XXX.128
mysql: [Warning] Using a password on the command line interface can be insecure.

20180529171802 The Condition is OK,permit to create UID.
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.
177.177.% testuid Y N N N N N N N Y N N N N N N N N N N N N N N N N N N N N 0 0 0 0 mysql_native_password *22CBF14EBDE8814586FF12332FA2B6023A7603BB N 2018-05-29 17:18:02 NULL N
20180529171802 177.177.XXX.128 Congratulation! Create UID successful
177.177.XXX.144
mysql: [Warning] Using a password on the command line interface can be insecure.
177.177.% testuid Y N N N N N N N Y N N N N N N N N N N N N N N N N N N N N 0 0 0 0 mysql_native_password *22CBF14EBDE8814586FF12332FA2B6023A7603BB N 2018-05-30 00:56:38 NULL N
20180529171802 177.177.XXX.144 The UID you want create has been exited, please check it! The Act Quit!

4.補充說明

如果創建一個伺服器上的MySQL賬號，可按照以下格式

./mysql_CreateUIDMulti.sh 177.177.XXX.128 3306

列印的Log 如下

177.177.XXX.128
177.177.XXX.128
177.177.XXX.128
mysql: [Warning] Using a password on the command line interface can be insecure.

20180529173517 The Condition is OK,permit to create UID.
mysql: [Warning] Using a password on the command line interface can be insecure.
mysql: [Warning] Using a password on the command line interface can be insecure.
177.177.% testuid Y N N N N N N N Y N N N N N N N N N N N N N N N N N N N N 0 0 0 0 mysql_native_password *22CBF14EBDE8814586FF12332FA2B6023A7603BB N 2018-07-29 17:35:17 NULL N
20180529173517 177.177.XXX.128 Congratulation! Create UID successful

本文版權歸作者所有，未經作者同意不得轉載,謝謝配合！！！

本文版權歸作者所有，未經作者同意不得轉載,謝謝配合！！！

本文版權歸作者所有，未經作者同意不得轉載,謝謝配合！！！