memcached 进程启动及监控
1.memcached_inc.sh 设置路径，端口等讯息。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 $MEMCACHED_PID_FILE"
MEMCACHED_DAEMON_FILE="memcached_daemon.sh"
ERROR_LOGFILE="${ROOT}/memcached${SITE}${HOST}${PORT}.log"
2.gm_memcached.sh 控制memcached 启动，停止，重启。
$1 action
ROOT=$(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:$0 {start|stop|restart}\n"
exit 1
esac
exit 0
3.memcached_daemon.sh 监控memcached 进程，如进程失效则自动启动。
ROOT=$(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 $(date +%Y-%m-%d' '%H:%M:%s)" | sendmail me@gmail.com
fi
sleep 5
done
exit 0
使用方法：
shell 记录apache status并自动更新到数据库
1. 获取apache status monitor_log.sh连接数
site_connects=$(netstat -ant | grep $ip:80 | wc -l)
当前连接数
site_cur_connects=$(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
在终端设置crontab执行
2. 将apache status log 写入数据库 save_monitor_log.PHP
$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;
$this->connectdb();
}
/** load data
// 讀取log數據
if(file_exists($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
?>
在终端crontab执行
table monitor_log struct
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