如何不耍流氓的做运维之-SHELL脚本小技巧
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#!/bin/bash
#######################################################
# $Name: shell_template.sh
# $Version: v1.0
# $Function: Backup MySQL Databases Template Script
# $Author: Jason Zhao
# $organization: https://www.unixhot.com/
# $Create Date: 2016-08-27
# $Description: You know what i mean,hehe
#######################################################
# Shell Env
SHELL_NAME="shell_template.sh"
SHELL_DIR="/opt/shell"
SHELL_LOG="${SHELL_DIR}/${SHELL_NAME}.log"
LOCK_FILE="/tmp/${SHELL_NAME}.lock"
#Write Log
shell_log(){
LOG_INFO=$1
echo "$(date "+%Y-%m-%d") $(date "+%H-%M-%S") : ${SHELL_NAME} : ${LOG_INFO}" >> ${SHELL_LOG}
}
# Shell Usage
shell_usage(){
echo $"Usage: $0 {backup}"
}
shell_lock(){
touch ${LOCK_FILE}
}
shell_unlock(){
rm -f ${LOCK_FILE}
}
# Backup MySQL All Database with mysqldump or innobackupex
mysql_backup(){
if [ -f "$LOCK_FILE" ];then
shell_log "${SHELL_NAME} is running"
echo "${SHELL_NAME}" is running && exit
fi
shell_log "mysql backup start"
shell_lock
sleep 10
shell_log "mysql backup stop"
shell_unlock
}
# Main Function
main(){
case $1 in
backup)
mysql_backup
;;
*)
shell_usage;
esac
}
#Exec
main $1
2 个评论
写下我自己的模块函数，直接复制可用：
举一个例子：
#!/bin/bash
#***************************************************************************
# *
# * @file:pid_run.sh
# * @author:Luolired
# * @date:2016-01-05 16:26
# * @version 0.5
# * @description: 节点提升为master调用的脚本
# * 1.脚本标准化 notify_master "/etc/keepalived/scripts/pid_run.sh"
# * @Copyright (c) 007ka all right reserved
# * @updatelog:
# * 1.更新程序标准化逻辑性
# * 2.优化日志的输出
# * 3.增加同步锁状态标识，用以区分同步开启
# * 4.增加Keepalived主备切换功能开启锁，用以初始化启动抢占操作多开或Stop原有业务
#**************************************************************************/
export LANG=zh_CN.GBK
1.4.1 结果输出函数模块
### Print error messges eg: _err "This is error"
function _err()
{
#echo -e "\033[1;31m[ERROR] $@\033[0m" >&2
echo -e "\033[1;31m[ERROR] $@\033[0m"
}
### Print notice messages eg: _info "This is Info"
function _info()
{
#echo -e "\033[1;32m[Info] $@\033[0m" >&2
echo -e "\033[1;32m[Info] $@\033[0m"
}
1.4.2 日志输出函数模块
###LOG_PATH
###程序运行all日志输出路径
g_s_LOG_PATH=/var/applog/${G_LOG_FILE}
mkdir -p $g_s_LOG_PATH
g_s_LOGDATE=`date +"%F"`
#执行脚本生成的日志
g_s_LOGFILE="${g_s_LOG_PATH}/pid_run.${g_s_LOGDATE}.log"
### LOG to file eg:g_fn_LOG "Test"
g_fn_LOG()
{
s_Ddate=`date +"%F %H:%M:%S"`
echo "[$s_Ddate] $*" >> $g_s_LOGFILE
}
1.4.3 flock锁函数模块
### Add flock Avoid more open program
function _lock()
{
flock -n 3
[ $? -eq 1 ] && { _err "Fault $(basename $0) is Already in Runing,Plesase Waiting....^_^ GoodBye!!!"; exit; }
_info "$(basename $0) Current Pid is:$$"
_log "$(basename $0) Current Pid is:$$"
sleep 50
} 3<>/tmp/$(basename $0 | awk -F. 'BEGIN{OFS="."};{NF=NF-1;print $0}').lock
function main()
{
_lock
}
#main
main
