shell编程系列26--大型脚本工具开发实战大型脚本工具开发实战拆分脚本功能，抽象函数1、function get_all_group 返回进程组列表字符串2、function get_all_process 返回进程名列表字符串"nginx httpd mysql datanode"3、function get_process_info 返回进程详细信息列表字符串，详细信息包括：运行状态、PID、CPU、MEM、启动时间 注：该函数可以接收一个参数，参数为进程名称4、function get_all_process_by_group 返回进程组内的所有进程名称列表字符串 例子：DB组--> "mysql postgresql oracle" 功能函数1代码： function get_all_group { if [ ! -e $HOME_DIR/$CONFIG_FILE ];then echo "$CONFIG_file is not exists..Please check" exit 1 else G_LIST=$(sed -n '/\[GROUP_LIST]/,/\[.*\]/p' /root/lesson/9.1/process.cfg | egrep -v "(^$|\[.*\])") echo "$G_LIST" fi } [root@localhost 9.1]# sed -n '/\[GROUP_LIST]/,/\[.*\]/p' process.cfg | grep -v "^$" | grep -v "\[.*\]" WEB DB HADOOP YARN [root@localhost 9.1]# sed -n '/\[GROUP_LIST]/,/\[.*\]/p' process.cfg | egrep -v "(^$|\[.*\])" WEB DB HADOOP YARN 功能函数2代码： function get_all_process { for g in `get_all_group` do P_LIST=`sed -n "/\[$g\]/,/\[.*\]/p" $HOME_DIR/$CONFIG_FILE | egrep -v "(^$|\[.*\])"` echo $P_LIST done } 功能函数3代码： # ps -aux 第三列是cpu使用率，第四列是内存使用率 [root@localhost ~]# ps -aux | grep httpd root 17921 0.0 0.2 224020 4996 ? Ss 17:32 0:00 /usr/sbin/httpd -DFOREGROUND apache 17922 0.0 0.1 224020 2952 ? S 17:32 0:00 /usr/sbin/httpd -DFOREGROUND apache 17923 0.0 0.1 224020 2952 ? S 17:32 0:00 /usr/sbin/httpd -DFOREGROUND apache 17924 0.0 0.1 224020 2952 ? S 17:32 0:00 /usr/sbin/httpd -DFOREGROUND apache 17925 0.0 0.1 224020 2952 ? S 17:32 0:00 /usr/sbin/httpd -DFOREGROUND apache 17926 0.0 0.1 224020 2952 ? S 17:32 0:00 /usr/sbin/httpd -DFOREGROUND function get_process_info # 进程本身的pid this_pid=$$ function get_process_pid_by_name # 获取进程的pid { if [ $# -ne 1 ];then return 1 else #pids=`ps -ef | grep $1 | grep -v grep | grep -v $this_pid |grep -v $0| awk '{print $2}'` pids=`ps -ef | grep $1 | grep -v grep | grep -v $0| awk '{print $2}'` echo $pids fi } function get_process_info_by_pid # 获取进行信息 { # awk 中引入一个变量 if [ `ps -ef | awk -v pid=$1 '$2==pid{print}' | wc -l` -eq 1 ];then pro_status="RUNNING" else pro_status="STOPED" fi pro_cpu=`ps aux | awk -v pid=$1 '$2==pid{print $3}'` pro_mem=`ps aux | awk -v pid=$1 '$2==pid{print $4}'` pro_start_time=`ps -p $1 -o lstart | grep -v STARTED` } 功能函数4代码实现： function is_group_in_config { # 如果遍历不存在就返回1 for gn in `get_all_group`;do if [ "$gn" == "$1" ];then return fi done return 1 } function get_all_process_by_group { is_group_in_config if [ $? -eq 0 ];then p_list=`sed -n "/\[$1\]/,/\[.*\]/p" $HOME_DIR/$CONFIG_FILE | egrep -v "(^$|^#|\[.*\])"` echo $p_list else echo "GroupName $1 is not in process.cfg" fi }程序主流程设计： ./app_status.sh执行有三种情况： 1、无参数 列出配置文件中所有进程的运行信息 2、-g GroupName 列出GroupName组内的所有进程 3、process_name1 列出指定进程的运行信息 function get_all_group 说明：该函数无需输入任何参数：返回配置文件 process.cfg中所有的组信息，例如web,db等 function get_all_process 说明：该函数无需输入任何参数：返回配置文件 process.cfg中所有的进程信息 function get_process_pid_by_name 说明：该函数接收一个参数，参数为进程名称：返回值是一个PID的列表，可能有一个PID，也可能有多个 function get_process_info_by_pid 说明：该函数接收一个参数，参数为进程PID；返回值是一个进程运行信息的列表，列表包含运行状态：CPU占用率、内存占用率、进程运行时间 function is_group_in_config 说明 :该函数接收一个参数，参数为组的名称；返回值是0或1,0代表该组在配置文件中，1代表该组不在配置文件中 function get_all_process_by_group 说明：该函数接收一个参数，参数为组名称：返回值是对应组内的所有进程名称列表 function get_group_by_process_name 说明：该函数接收一个参数，参数是一个进程名称：返回值是一个组名 function format_print 说明：该函数接收两个参数，第一个参数为process_name，第二个参数为组名称 返回值，是针对每一个进程PID的运行信息 function is_process_in_config 说明：该函数接收一个参数，参数为进程名称；返回值是0或1，0代表该进程在配置文件中，1代表进程不在配置文件中配置文件：[root@localhost 9.1]# cat /root/lesson/9.1/process.cfg[GROUP_LIST]WEBDBHADOOPYARN[WEB]nginxhttpd[DB]mysqlpostgresqloracle[HADOOP]datanodenamenodejournalnode[YARN]resourcemanagernodemanager# 程序脚本[root@localhost 9.1]# cat /data/shell/app_status.sh #!/bin/bash## Func: Get Process Status In process.cfg# Define VariablesHOME_DIR="/root/lesson/9.1"CONFIG_FILE="process.cfg"# 进程本身的pidthis_pid=$$# 获取所有的组function get_all_group{ G_LIST=$(sed -n '/\[GROUP_LIST]/,/\[.*\]/p' $HOME_DIR/$CONFIG_FILE | egrep -v "(^$|\[.*\])") echo $G_LIST}#for g in `get_all_group`;do# echo $g#done# 获取所有进程function get_all_process{ for g in `get_all_group` do P_LIST=`sed -n "/\[$g\]/,/\[.*\]/p" $HOME_DIR/$CONFIG_FILE | egrep -v "(^$|\[.*\])"` echo $P_LIST done}# 通过pid获取进程名称function get_process_pid_by_name{ if [ $# -ne 1 ];then return 1 else #pids=`ps -ef | grep $1 | grep -v grep | grep -v $this_pid |grep -v $0| awk '{print $2}'` pids=`ps -ef | grep $1 | grep -v grep | grep -v $0| awk '{print $2}'` echo $pids fi}# 通过pid 获取进程信息function get_process_info_by_pid{ # awk 中引入一个变量 if [ `ps -ef | awk -v pid=$1 '$2==pid{print}' | wc -l` -eq 1 ];then pro_status="RUNNING" else pro_status="STOPED" fi pro_cpu=`ps aux | awk -v pid=$1 '$2==pid{print $3}'` pro_mem=`ps aux | awk -v pid=$1 '$2==pid{print $4}'` pro_start_time=`ps -p $1 -o lstart | grep -v STARTED` #echo "pro_status=$pro_status" #echo "pro_cpu=$pro_cpu" #echo "pro_mem=$pro_mem" #echo "pro_start_time=$pro_start_time"}# 判断输入的组是否在配置文件中function is_group_in_config{ # 如果遍历不存在就返回1 for gn in `get_all_group`;do if [ "$gn" == "$1" ];then return 0 fi done echo "Group $1 is not in process.cfg" return 1}# 判断进程是否在配置中function is_process_in_config{ for pn in `get_all_process`;do if [ $pn == $1 ];then return fi done echo "Process $1 is not in process.cfg" return 1}# 通过组名获取组下所有的进程function get_all_process_by_group{ # 判断输入的组名是否在group中 is_group_in_config $1 if [ $? -eq 0 ];then p_list=`sed -n "/\[$1\]/,/\[.*\]/p" $HOME_DIR/$CONFIG_FILE | egrep -v "(^$|^#|\[.*\])"` echo $p_list else echo "GroupName $1 is not in process.cfg" fi }# 通过进程名称获取所在的组function get_group_by_process_name{ for gn in `get_all_group`;do for pn in `get_all_process_by_group $gn`;do #echo "pn=$pn" if [ $pn == $1 ];then echo "$gn" fi done done}#if [ ! -e $HOME_DIR/$CONFIG_FILE ];then# echo "$CONFIG_FILE is not exists..please check.."#fi#is_group_in_config $1 && echo "exists" || echo "not exists"#get_all_process_by_group $1function format_print{ ps -ef | grep $1 | grep -v grep | grep -v $this_pid &> /dev/null if [ $? -eq 0 ];then pids=`get_process_pid_by_name $1` #echo "pids=$pids" for pid in $pids;do get_process_info_by_pid $pid awk -v p_name=$1 -v g_name=$2 -v p_status=$pro_status -v p_pid=$pid -v p_cpu=$pro_cpu -v p_mem=$pro_mem -v p_start_time="$pro_start_time" 'BEGIN{printf "%-20s%-20s%-20s%-20s%-20s%-20s%-20s\n",p_name,g_name,p_status,p_pid,p_cpu,p_mem,p_start_time}' # -v 定义的参数需要用双引号引起来""，否则会报错 awk: fatal: cannot open file `15' for reading (No such file or directory),主要是因为 p_start_time 中间有空格，需要""双引号引起来 #awk -v p_name="$1" -v g_name="$2" -v p_status="$pro_status" -v p_pid="$pid" -v p_cpu="$pro_cpu" -v p_mem="$pro_mem" -v p_start_time="$pro_start_time" 'BEGIN{printf "%-20s%-20s%-20s%-20s%-20s%-20s%-20s\n",p_name,g_name,p_pid,p_status,p_cpu,p_mem,p_start_time}' done else awk -v p_name=$1 -v g_name=$2 'BEGIN{printf "%-20s%-20s%-20s%-20s%-20s%-20s%-20s\n",p_name,g_name,"NULL","Stopped","NULL","NULL","NULL"}' fi}# 打印头信息awk 'BEGIN{printf "%-20s%-20s%-20s%-20s%-20s%-20s%-20s\n","ProcessName---","GroupName---","Status---","Pid---","CPU---","MEMORY---","StartTime---"}'if [ $# -gt 0 ];then # 传递的是组 if [ "$1" == "-g" ];then shift # 遍历传递参数的组 for gn in $@;do # 组名是否在配置文件中， 执行不成功才会 continue 跳过 is_group_in_config $gn || continue for pn in `get_all_process_by_group $gn`;do is_process_in_config $pn && format_print $pn $gn done done # 传递的是进程名 else for pn in $@;do gn=`get_group_by_process_name $pn` is_process_in_config $pn && format_print $pn $gn done fielse # 不添加参数，打印所有进程 for pn in `get_all_process`;do gn=`get_group_by_process_name $pn` #echo "gn=$gn, pn=$pn" is_process_in_config $pn if [ $? -eq 0 ];then #echo "format print" format_print $pn $gn fi donefi#format_print nginx WEB#group_name=`get_group_by_process_name $1`#echo $group_name[root@localhost 9.1]# # 常用使用方法[root@localhost shell]# ./app_status.sh ProcessName--- GroupName--- Status--- Pid--- CPU--- MEMORY--- StartTime--- nginx WEB RUNNING 18492 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18493 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18494 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18495 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18496 0.0 0.1 Sat Jun 15 14:07:18 2019httpd WEB RUNNING 51138 0.0 0.2 Sat Jun 15 17:41:16 2019httpd WEB RUNNING 87150 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87151 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87152 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87153 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87154 0.0 0.1 Sun Jun 16 03:33:00 2019mysql DB RUNNING 11085 0.0 0.0 Sat Jun 15 11:46:18 2019mysql DB RUNNING 11246 0.0 4.8 Sat Jun 15 11:46:18 2019postgresql DB NULL Stopped NULL NULL NULL oracle DB NULL Stopped NULL NULL NULL datanode HADOOP NULL Stopped NULL NULL NULL namenode HADOOP NULL Stopped NULL NULL NULL journalnode HADOOP NULL Stopped NULL NULL NULL resourcemanager YARN NULL Stopped NULL NULL NULL nodemanager YARN NULL Stopped NULL NULL NULL [root@localhost shell]# ./app_status.sh -g WEBProcessName--- GroupName--- Status--- Pid--- CPU--- MEMORY--- StartTime--- nginx WEB RUNNING 18492 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18493 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18494 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18495 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18496 0.0 0.1 Sat Jun 15 14:07:18 2019httpd WEB RUNNING 51138 0.0 0.2 Sat Jun 15 17:41:16 2019httpd WEB RUNNING 87150 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87151 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87152 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87153 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87154 0.0 0.1 Sun Jun 16 03:33:00 2019[root@localhost shell]# ./app_status.sh -g WEB DBProcessName--- GroupName--- Status--- Pid--- CPU--- MEMORY--- StartTime--- nginx WEB RUNNING 18492 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18493 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18494 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18495 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18496 0.0 0.1 Sat Jun 15 14:07:18 2019httpd WEB RUNNING 51138 0.0 0.2 Sat Jun 15 17:41:16 2019httpd WEB RUNNING 87150 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87151 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87152 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87153 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87154 0.0 0.1 Sun Jun 16 03:33:00 2019mysql DB RUNNING 11085 0.0 0.0 Sat Jun 15 11:46:18 2019mysql DB RUNNING 11246 0.0 4.8 Sat Jun 15 11:46:18 2019postgresql DB NULL Stopped NULL NULL NULL oracle DB NULL Stopped NULL NULL NULL [root@localhost shell]# ./app_status.sh nginx httpdProcessName--- GroupName--- Status--- Pid--- CPU--- MEMORY--- StartTime--- nginx WEB RUNNING 18492 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18493 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18494 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18495 0.0 0.1 Sat Jun 15 14:07:18 2019nginx WEB RUNNING 18496 0.0 0.1 Sat Jun 15 14:07:18 2019httpd WEB RUNNING 51138 0.0 0.2 Sat Jun 15 17:41:16 2019httpd WEB RUNNING 87150 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87151 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87152 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87153 0.0 0.1 Sun Jun 16 03:33:00 2019httpd WEB RUNNING 87154 0.0 0.1 Sun Jun 16 03:33:00 2019[root@localhost shell]#