#!/usr/bin/env bash
REMOTE_OK=remote_ok
REMOTE_FAIL=remote_fail
TIMESTAMP=`date +%F%H%M%S`
CURRENT_HTML=/var/www/html/${TIMESTAMP}.html
CURRENT_INDEX=/var/www/html/index.html
LN=/bin/ln
SERVER_LIST=server_list
PASS=pass
cat <<EOF > $CURRENT_HTML
<html>
<head>
<title>Server Alive Monitor</title>
</head>
<body>
<table width="50%" border="1" cellpading="1" cellspaceing="0" >
<caption><h2>Server Alive Status</h2></caption>
<tr><th>Server Name</th><th>Server Satus</th><th>Server Load</th></tr>
EOF
while read SERVERS
do
REMOTE_RESULT=`sshpass -f $PASS ssh -n root@$SERVERS "uptime"` # "-n" redirects stdin from /dev/null
if [ $? -eq 0 ];then
STATUS=OK
COLOR=blue
echo $REMOTE_RESULT > $REMOTE_OK
REMOTE_LOAD=`cat ${REMOTE_OK}| awk -F ":" '{print $4}'`
echo "<tr><td>$SERVERS</td><td><font color=$COLOR>$STATUS</font></td><td>$REMOTE_LOAD</td></tr>" >> $CURRENT_HTML
else
STATUS=FALSE
COLOR=red
echo "Server is unavailable" > $REMOTE_FAIL
REMOTE_LOAD=$(cat $REMOTE_FAIL)
echo "<tr><td>$SERVERS</td><td><font color=$COLOR>$STATUS</font></td><td>$REMOTE_LOAD</td></tr>" >> $CURRENT_HTML
fi
done < $SERVER_LIST
cat <<EOF >> $CURRENT_HTML
</table>
</body>
</html>
EOF
$LN -sf $CURRENT_HTML $CURRENT_INDEX
标签：LOAD,shell,REMOTE,Server,CURRENT,HTML,monitoring,echo From： https://www.cnblogs.com/abc0012383/p/18382014