lsasrv spnego error

MS outlook is not able to retrieve email from exchange server and then lsasrv error will be populated to eventlog in system category.

outlook default 會使用Negotitate Authentication進行驗證,此時會依序使用Kerberos/NTLM進行連線
若持續失敗,將無法與exchange溝通

http://support.microsoft.com/kb/244474

了解一下Kerberos與NTLM吧^^"
http://technet.microsoft.com/en-us/library/bb742516.aspx
http://msdn.microsoft.com/en-us/library/aa378747(v=VS.85).aspx
http://msdn.microsoft.com/en-us/library/aa378749(VS.85).aspx

esata removal tool

#!/bin/sh
if [ $# -ne 1 ];then
echo "USAGE: esata_removal hdd"
exit;
else
if [ `echo $1 | awk '{ if($1~/^sd/) {print length($0)} else {print "0"}}'` -ne 3 ];then
echo "USAGE: esata_removal sdX"
else
if [ `cat /proc/partitions |grep $1|wc -l` -eq 0 ];then
echo -e "Invalid Drive: Unable to find target drive on system."
fi
if [ `mount|awk '($1~"^/dev/'""$1""'" && $3=="/boot"){print $0}'|wc -l` -eq 1 ];then
echo "System Drive is not allowed to be removed."
exit;
fi
fi
fi

function check_mount(){
IFS=$'\n'
mount_map=`mount|awk '($1~"^/dev/'""$1""'"){print $0}'`
OUT=0
for i in $mount_map; do
echo $i|awk '{print $3" need to be unmounted from system before performing esata hot swap"}'
OUT=1
done
if [ $OUT -eq 1 ];then
exit
fi
}

function bus_id_lookup(){
bus_id=`dmesg |grep $1|grep scsi|tail -n 1|awk '{print $6 $8 $10 $12}'|sed 's/,/ /g'|sed 's/scsi//g'`
}

check_mount $1
bus_id_lookup $1
echo 1 > /sys/block/$1/device/delete
echo "scsi remove-single-device $bus_id" > /proc/scsi/scsi
echo Disk $1 can be removed from bus $bus_id

Linux flow control

1:create the root qdisc and assign the default class
# $TC qdisc add dev eth0 root handle 1: htb default $D_CLASS
2:create the class you want to have
# $TC class add dev eth0 parent 1: classid 1:1 htb rate 10mbit
# $TC class add dev eth0 parent 1: classid 1:1000 htb rate 1000mbit
child class of 1:1000 -- 20mbit of 1000mbit
# $TC class add dev eth0 parent 1:1000 classid 1:20 htb rate 20mbit
3:speed control parameter in class creation -- rate for guarantee bandwidth and ceil for maximum bandwidth
4:define your rule.
U32="$TC filter add dev $IF protocol ip parent 1:0 prio 1 u32"
by IP
$U32 match ip dst xxx.xxx.xxx.xxx/32 flowid $CLASS
by port
$U32 match ip sport port_number 0xffff flowid $CLASS
Nested rule
$U32 match ip dport port_number 0xffff match ip dst xxx.xxx.xxx.xxx/32 flowid $CLASS

tc class|qdisc|filer add|change|replace dev $IF args
tc -s class|qdisc|filter ls dev eth0

tc filter del dev eth0 parent CLASS:CLASS prio 10 handle HANDLE::HANDLE u32

refer to http://blog.edseek.com/~jasonb/articles/traffic_shaping/classflows.html#iptu32
refer to http://www.gentoo-wiki.info/QoS

how to make a portable RRDTOOL

Download all required packages first:
RRDtool: http://oss.oetiker.ch/rrdtool/pub/?M=D
Dependent library http://oss.oetiker.ch/rrdtool/pub/libs/
1: install pixman ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR && make && make install
2: setup environment variable PKG_CONFIG_PATH export PKG_CONFIG_PATH=libdir/pkgconfig/
3: install libpng ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR && make && make install
4: install freetype ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR && make && make install
5: install fontconfig ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR && make && make install
6: Install pkg-config rpm2cpio pkgconfig-0.20-1.fc4.1.i386.rpm |cpio –idmv
update environment variable PATH  export PATH=PATH_OF_pkg-config:$PATH
7: install cairo ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR && make && make install
8: install glib ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR && make && make install
9: install pango ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR && make && make install
10: install intltool ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR && make && make install
11: install rrdtool ./configure --prefix=PREFIX --libdir=DIR --includedir=DIR --bindir=DIR && make && make install
12: install spine --> issue# aclocal && libtoolize --force && autoconf && autoheader && automake && ./configure –prefix=PREFIX
13: dispath rrdtool to system revise /etc/ld.so.conf and run ldconfig
14: or set environment variable LD_LIBRARY_PATH=PATH_OF_UR_LIB