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--- 리소스_스크립트_작성법 [2015/11/10 06:32] – 만듦 zzung
+++ 리소스_스크립트_작성법 [2015/12/07 03:36] (현재) – zzung
@@ 줄 1: / 줄 1: @@
 참고 URL : https://access.redhat.com/solutions/5912
+===== service script 작성방법 =====
+서비스 스크립트는 기본적으로 3가지 기능이 포함되어 있어야 합니다.
+  - service 이름으로 start 서비스가 제공되어야 합니다. 실패한 경우에는(**0이 아닌 다른 값**) 성공한 경우에는 **0** 을 반환해야 합니다.
+  - service 이름으로 stop 서비스가 제공되어야 합니다. 실패한 경우에는(**0이 아닌 다른 값**) 성공한 경우에는 **0** 을 반환해야 합니다.
+  - service 이름으로 status 서비스가 제공되어야 합니다. 실패한 경우에는(**0이 아닌 다른 값**) 성공한 경우에는 **0** 을 반환해야 합니다.
+++++ script 문법예|
+<code vim>
+#!/bin/bash
+#
+# Copyright Red Hat Inc., 2002
+# Copyright Mission Critical Linux, 2000
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any
+# later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; see the file COPYING. If not, write to the
+# Free Software Foundation, Inc., 675 Mass Ave, Cambridge,
+# MA 02139, USA.
+#
+#
+# Author: Gregory P. Myrdal
+#
+#
+# This file contains a template that you can use to create a script
+# that will start, stop and monitor an application used in a cluster \\
+# service.
+#
+#------------------------------------------------------------
+# Variable definitions
+#------------------------------------------------------------
+MYNAME=$(basename $0)
+# The clug utility uses the normal logging levels as defined in
+# sys/syslog.h. Calls to clulog will use the logging level defined
+# for the Service Manager (clusvcmgrd).
+LOG_EMERG=0 # system is unusable
+LOG_ALERT=1 # action must be taken immediately
+LOG_CRIT=2 # critical conditions
+LOG_ERR=3 # error conditions
+LOG_WARNING=4 # warning conditions
+LOG_NOTICE=5 # normal but significant condition
+LOG_INFO=6 # informational
+LOG_DEBUG=7 # debug-level messages
+#------------------------------------------------------------
+# Start of execution
+#------------------------------------------------------------
+if [ $# -ne 1 ]; then
+    echo "Usage: $0 {start, stop, status}"
+    exit 1
+fi
+action=$1 # type of action, i.e. 'start', 'stop' or 'status'
+# Record all output into a temp file in case of error
+exec > /tmp/$MYNAME.$action.log 2>1
+clulog -s $LOG_DEBUG "In $0 with action=$action,"
+case $action in
+    'start')
+        clulog -s $LOG_INFO "Running user start script for service $0"
+        # <<< Add service start specfic code here >>>
+        /path/to/my-service-start
+        exit $?
+        ;;
+    'stop')
+        clulog -s $LOG_INFO "Running user stop script for service $0"
+        # <<< Add service stop specfic code here >>>
+        /path/to/my-service-stop
+        exit $?
+        ;;
+    'status')
+        clulog -s $LOG_INFO "Running user status script for service $0"
+        # <<< Add service status specfic code here >>>
+        pidof my-service-process
+        exit $?
+        ;;
+    *)
+        clulog -s $LOG_ERR "Unknown action '$action' passed to $0 user script"
+        exit 1 # return failure
+esac
+</code>
+++++
+===== service scripts 간략 테스트 방법 =====
+A normal start-status-stop cycle:	 정상 가동 상태 start-status-stop 사이클
+<code vim>
+# Service not yet start, status return failure	// 서비스가 아직 시작되지 않은 경우에는 status 값을 failure 로 리턴해야 합니다. ( 0 이 아닌 다른값)
+$ service script_name status; echo $?
+# Start the service, return success
+$ service script_name start; echo $?
+# Already started, status return success
+$ service script_name status; echo $?
+# Stop the service, return success
+$ service script_name stop; echo $?
+# Service is stopped, status return failure
+$ service script_name status; echo $?
+</code>
+Stop the service even if the service is already stopped:만약 서비스가 이미 중지 되어있어도 서비스를 중지시켜라.
+<code vim>
+# Start the service, return success
+$ service script_name start; echo $?
+# Stop the service, return success
+$ service script_name stop; echo $?
+# Stop the service again, return success
+$ service script_name stop; echo $?
+</code>
+Report error status when the process exit abnormally: 프로세스가 비정상적으로 종료될때 error 상태를 레포트 하세요
+<code vim>
+# Stop the service, return success
+$ service script_name start; echo $?
+# Already started, status return success
+$ service script_name status; echo $?
+# Kill the process
+$ killall process_name
+# The process was killed, status return failure
+$ service script_name status; echo $?
+# Stop the service even if it exited abnormally, return success
+$ service script_name stop; echo $?
+</code>