memcached 進程啟動及監控
1.memcached_inc.sh
設置路徑，端口等訊息。
#!/bin/sh
#config include
HOST=$(hostname)
SITE="mysite"
PORT=11211
MEMCACHED_PID_FILE="/tmp/memcached.pid"
MEMCACHED_DAEMON_PID_FILE="/tmp/memcached_daemon.pid"
MEMCACHED="memcached -d -m 64 -p $PORT -u memcache -l 127.0.0.1 -P $MEMCACHED_PID_FILE"
MEMCACHED_DAEMON_FILE="memcached_daemon.sh"
ERROR_LOG_FILE="${ROOT}/memcached_${SITE}_${HOST}_${PORT}.log"
2.gm_memcached.sh
控制memcached 啟動，停止，重啟。
#!/bin/sh
#memcached start and stop
#$1 action
ROOT=$(cd "$(dirname "$0")"; pwd)
. ${ROOT}/memcached_inc.sh
start() {
if [ -f "$MEMCACHED_PID_FILE" ] && [ -s "$MEMCACHED_PID_FILE" ]; then
printf "memcached already running\n"
else
printf "starting memcached\n"
$MEMCACHED
sleep 2
PID=$(cat $MEMCACHED_PID_FILE)
printf "memcached is started PID:$PID\n"
printf "starting memcached daemon\n"
${ROOT}/${MEMCACHED_DAEMON_FILE} &
DAEMON_PID=$!
echo ${DAEMON_PID} > ${MEMCACHED_DAEMON_PID_FILE}
printf "memcached daemon is started PID:${DAEMON_PID}\n"
fi
}
stop() {
if [ -f "$MEMCACHED_DAEMON_PID_FILE" ] && [ -s "$MEMCACHED_DAEMON_PID_FILE" ]; then
DAEMON_PID=$(cat $MEMCACHED_DAEMON_PID_FILE)
rm -f ${MEMCACHED_DAEMON_PID_FILE}
if [ ! -z ${DAEMON_PID} ]; then
kill -9 ${DAEMON_PID}
fi
printf "memcached daemon is stopped\n"
else
printf "no memcached daemon running\n"
fi
sleep 1
if [ -f "$MEMCACHED_PID_FILE" ] && [ -s "$MEMCACHED_PID_FILE" ]; then
PID=$(cat $MEMCACHED_PID_FILE)
rm -f ${MEMCACHED_PID_FILE}
if [ ! -z ${PID} ]; then
kill -9 ${PID}
fi
printf "memcached is stopped\n"
else
printf "no memcached running\n"
fi
}
case "$1" in
start)
start
;;
stop)
stop
;;
restart)
stop
sleep 3
start
;;
*)
printf "Usage:$0 {start|stop|restart}\n"
exit 1
esac
exit 0
3.memcached_daemon.sh
監控memcached 進程，如進程失效則自動啟動。
#!/bin/sh
#memcached daemon
ROOT=$(cd "$(dirname "$0")"; pwd)
. ${ROOT}/memcached_inc.sh
while :
do
if [ -f "$MEMCACHED_PID_FILE" ] && [ -s "$MEMCACHED_PID_FILE" ]; then
PID=$(cat $MEMCACHED_PID_FILE)
else
PID=""
fi
if [ -z "$PID" ] || [ -z $(ps aux|awk '{print $2}' | grep "^$PID$") ]; then
$MEMCACHED
sleep 1
printf "[$(date +%Y-%m-%d' '%H:%M:%S)] ${SITE} ${HOST} memcached ${PORT} is restarted\n" >> $ERROR_LOG_FILE
echo "Subject: ${SITE} ${HOST} memcached ${PORT} is restarted $(date +%Y-%m-%d' '%H:%M:%S)" | sendmail [email protected]
fi
sleep 5
done
exit 0
使用方法：
./gm_memcached.sh start #啟動memcached ./gm_memcached.sh stop #停止memcached ./gm_memcached.sh restart #重啟memcached
shell 記錄apache status並自動更新到數據庫
1. 獲取apache status
monitor_log.sh
#!/bin/bash
#連接數
site_connects=$(netstat -ant | grep $ip:80 | wc -l)
#當前連接數
site_cur_connects=$(netstat -ant | grep $ip:80 | grep EST | wc -l)
#apache
apache_speed=$(netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}')
printf "[#start#]\n$(date '+%Y-%m-%d %H:%M:%S')\n"
printf "connects:${site_connects}\n"
printf "cur connects:${site_cur_connects}\n"
printf "apache_speed:\n${apache_speed}\n[#end#]\n\n"
exit 0
在終端設置crontab執行
* * * * * /home/fdipzone/monitor_log.sh >> /home/fdipzone/monitor.log
2. 將apache status log 寫入數據庫
save_monitor_log.php
<?php
$logfile = dirname(__FILE__).'/monitor.log';
$dbconfig = array(
'host' => '192.168.1.100',
'username' => 'username',
'password' => 'password',
'dbname' => 'mydb',
'tabname' => 'monitor_log'
);
$obj = new SaveMonitorLog($dbconfig, 'myweb');
$obj->load($logfile);
// 讀取monitor log，記錄入db，查看db
class SaveMonitorLog{ // class start
private $_apache_state = array('TIME_WAIT', 'CLOSE_WAIT', 'SYN_SENT', 'SYN_RECV', 'FIN_WAIT1', 'FIN_WAIT2', 'ESTABLISHED', 'LAST_ACK', 'CLOSING');
private $_dbconfig = array();
private $_site = null;
/** init */
public function __construct($dbconfig=array(), $site='web'){
if(!isset($dbconfig['host']) || !isset($dbconfig['username']) || !isset($dbconfig['password']) || !isset($dbconfig['dbname']) || !isset($dbconfig['tabname'])){
$this->debug('dbconfig error');
}
$this->_dbconfig = $dbconfig;
$this->_site = $site;
$this->connectdb();
}
/** load data
* @param String $logfile log文件
* @return boolean
*/
public function load($logfile){
// 讀取log數據
if(file_exists($logfile)){
$logdata = file_get_contents($logfile);
// 清空monitor.log
file_put_contents($logfile, '', true);
}else{
return false;
}
// 正則分析數據 [#start#]*[#end#]
preg_match_all('/
#start#
(.*?)
#end#
.*?/si', $logdata, $data);
if(isset($data[1]) && count($data[1])>0){
$alldata = $data[1];
foreach($alldata as $val){
$indb = $this->parser($val);
$newid = $this->addtodb($indb);
}
}
}
/** parser data
* @param Array $data
* @return Array
*/
private function parser($data){
$indb = array();
$tmp = explode(chr(10), $data); // 按換行分隔
$indb['site'] = $this->_site;
$indb['addtime'] = $tmp[1];
$indb['connects'] = array_pop(explode(':',$tmp[2]));
$indb['cur_connects'] = array_pop(explode(':',$tmp[3]));
for($i=5, $max=count($tmp)-2; $i<$max; $i++){
list($key, $num) = explode(' ', $tmp[$i]);
if(in_array($key, $this->_apache_state)){
$indb[$key] = $num;
}
}
return $indb;
}
/** connect db */
private function connectdb(){
$conn=@mysql_connect($this->_dbconfig['host'], $this->_dbconfig['username'], $this->_dbconfig['password']) or die(mysql_error());
mysql_select_db($this->_dbconfig['dbname'], $conn) or die(mysql_error());
}
/** add to db */
private function addtodb($indb){
$insertkey = '';
$insertval = '';
if($indb){
foreach($indb as $key=>$val){
$insertkey .= $insertkey? " ,".$key : $key;
$insertval .= $insertval? " ,'".mysql_escape_string(trim($val))."'" : "'".mysql_escape_string(trim($val))."'";
}
$sqlstr = "insert into ".$this->_dbconfig['tabname']."($insertkey) values($insertval)";
$query = @mysql_query($sqlstr) or die(mysql_error());
$id = mysql_insert_id();
return $id? $id : false;
}
}
/** debug */
private function debug($msg){
exit($msg."\r\n");
}
} // class end
?>
在終端crontab執行
0 0 * * * php /home/fdipzone/save_monitor_log.php
table monitor_log struct
CREATE TABLE IF NOT EXISTS `monitor_log` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `site` varchar(20) NOT NULL, `connects` int(10) unsigned NOT NULL DEFAULT '0', `cur_connects` int(10) unsigned NOT NULL DEFAULT '0', `TIME_WAIT` int(10) unsigned NOT NULL DEFAULT '0', `CLOSE_WAIT` int(10) unsigned NOT NULL DEFAULT '0', `SYN_SENT` int(10) unsigned NOT NULL DEFAULT '0', `SYN_RECV` int(10) unsigned NOT NULL DEFAULT '0', `FIN_WAIT1` int(10) unsigned NOT NULL DEFAULT '0', `FIN_WAIT2` int(10) unsigned NOT NULL DEFAULT '0', `ESTABLISHED` int(10) unsigned NOT NULL DEFAULT '0', `LAST_ACK` int(10) unsigned NOT NULL DEFAULT '0', `CLOSING` int(10) unsigned NOT NULL DEFAULT '0', `addtime` datetime NOT NULL, PRIMARY KEY (`id`), KEY `connects` (`connects`), KEY `cur_connects` (`cur_connects`), KEY `TIME_WAIT` (`TIME_WAIT`), KEY `CLOSE_WAIT` (`CLOSE_WAIT`), KEY `SYN_SENT` (`SYN_SENT`), KEY `SYN_RECV` (`SYN_RECV`), KEY `FIN_WAIT1` (`FIN_WAIT1`), KEY `FIN_WAIT2` (`FIN_WAIT2`), KEY `ESTABLISHED` (`ESTABLISHED`), KEY `LAST_ACK` (`LAST_ACK`), KEY `CLOSING` (`CLOSING`), KEY `addtime` (`addtime`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 ;
