My personal view about the thing called ‘selfie stick’
Credit to C&H team.
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I accidentally destroyed your EC2 instance.
The Only Exception Posts
If you are wondering why your Lync is not keeping IM conversation history, you can take a look at Lync Options > Personal.
In my case, these two checkboxes were grayed out. I haven’t thoroughly investigate if this restriction is imposed by Lync Administrator in my organization.
Thankfully these two settings can be overriden by modifying your Windows registry. Tested and working.
Open your registry editor (regedit.exe) and navigate to these two keys.
HKEY_CURRENT_USER / SOFTWARE / MICROSOFT / COMMUNICATOR / CallLogAutoArchivingPolicy HKEY_CURRENT_USER / SOFTWARE / MICROSOFT / COMMUNICATOR / ImAutoArchivingPolicy
Double click those keys and change the hex value from 0 to 1. Restart your Lync and Microsoft Outlook.
***
Update: As expected, GPO reverted back the setting and disabled IM Archiving on my Lync 2013. I raised a ticket to Service Desk and asked them to enable this function and was told by the agent that it is organization policy to disable chat logging. Boo.
Leave a CommentUpdated: Corrected grep syntax problem.
Hello.
Nothing much to do today other than completing some pending documentations for my junior analysts, so I’ve decided to write a helper script to kill some time.
This bash script will display top ten processes which utilizing swap filesystem. It could be very useful if you want to troubleshoot any swap related issue. I have tested it on Oracle Enterprise Linux and it should be working fine on any Redhat based distribution.
#!/bin/bash
# GSS Linux: Script to find Top 20 processes utilizing swap filesystem.
# Author: Azwan_Ngali (azwan.ngali[AT]gmail.com)
# Linux blusmurf 2.6.32-042stab081.3 #1 SMP Mon Sep 9 20:07:47 MSK 2013 i686
SWAPFREE=$(cat /proc/meminfo | grep SwapFree: | awk -F " " '{print $2}')
SWAPTOTAL=$(cat /proc/meminfo | grep SwapTotal: | awk -F " " '{print $2}')
SWAPUSAGE=$(echo "$SWAPTOTAL - $SWAPFREE" | bc)
SWAPPERCENTAGE=$(echo "scale=3;($SWAPUSAGE / $SWAPTOTAL) * 100" | bc)
COUNTER=0
printf "\n"
printf "Displaying Top 20 processes which utilization swap filesystem \n"
printf "Current swap utilization (kB): $SWAPFREE / $SWAPTOTAL ($SWAPPERCENTAGE%%)\n"
printf "\n"
printf "%-25s %-25s %-25s\n" "PID" "Swap Utilization (kB)" "Process Name"
printf "%1s\n" "------------------------------------------------------------------------------------------------------------------------"
# Send ps ax output to temporary text file.
ps ax | awk '{print $1 " " $5}' > /tmp/psax_temp.txt
for x in $(grep Swap /proc/[1-9]*/smaps | grep -v '\W0 kB' | tr -s ' ' | cut -d' ' -f-2 | sort -t' ' -k2 -n | tr -d ' ' | tail -20); do
SWAPUSAGE=$(echo $x | cut -d: -f3)
PID=$(echo $x | cut -d/ -f3)
PROCNAME=$(grep -w $PID /tmp/psax_temp.txt | awk '{print $2}')
printf "%-25s %-25s %-25s\n" $PID $SWAPUSAGE $PROCNAME
COUNTER=$((COUNTER+1))
done
# No process found.
if [ $COUNTER -eq 0]; then
printf "No process found\n"
fi
# Remove temp file.
rm -f /tmp/psax_temp.txt
Note 1: Processes may appear multiple times if they have multiple memory regions swapped (and these are large)
Note 2: If the above script produces no output, then it could be that none of the currently running processes in /proc/*/smaps are using swap.
You can test that by simply running:
grep Swap /proc/[1-9]*/smaps | grep -v '\W0 kB'
Important thing to keep in mind is that the aforementioned script will only show the active processes that have memory swapped at that point in time, meaning at the time when the script was run. It might be quite possible that the system has already swapped a chunk of memory and that is visible on free output but the script shows no output. Point being, this script shows the current swapping activity and cannot be used for historical data gathering. For that purpose, sar can be used.
Output example
[root@oracle healthcheck]# ./swap.sh Displaying Top 20 processes which utilization swap filesystem Current swap utilization (kB): 7247736 / 16778232 (56.800%) PID Swap Utilization (kB) Process Name ------------------------------------------------------------------------------------------------------------------------ 22640 15420 /stornext/snfs1/eradmin/ggs/misc_oc10.2_11gV4/replicat 22440 15528 /stornext/snfs1/eradmin/ggs/misc_oc11.1_11gV4/extract 31065 16208 /stornext/snfs1/eradmin/ggs/siebeldwngrd_oc11.2_11gV4/replicat 3004 17372 /stornext/snfs1/eradmin/ggs/misc_oc10.2_11gV4/extract 17756 17560 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_2/replicat 4453 18148 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_1/replicat 668 19436 /stornext/snfs1/eradmin/ggs/misc_oc10.2_11gV4/extract 4454 22516 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_1/replicat 9052 23292 /opt/dell/srvadmin/sbin/dsm_sa_datamgrd 4450 28996 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_1/replicat 4460 33824 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_1/replicat 17754 38468 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_2/replicat 30233 42912 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_2/replicat 4449 43308 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_1/replicat 9052 63488 /opt/dell/srvadmin/sbin/dsm_sa_datamgrd 9052 63488 /opt/dell/srvadmin/sbin/dsm_sa_datamgrd 9052 65536 /opt/dell/srvadmin/sbin/dsm_sa_datamgrd 9052 65536 /opt/dell/srvadmin/sbin/dsm_sa_datamgrd 9052 65536 /opt/dell/srvadmin/sbin/dsm_sa_datamgrd 4467 4717844 /stornext/snfs1/eradmin/ggs/misc_tc14.0_11gV1_1/replicat [root@oracle healthcheck]#
Toodles.
Leave a CommentSymptom
User is not able to “su” to another account (be it local, or LDAP based)
[admazwan_ngali@oracle~]$ su - servicesoasit Password: Password: su: incorrect password
/var/log/secure will display this error log.
Jul 21 23:53:37 oracle su[22863]: pam_vas: Authentication <succeeded> for <Active Directory> user: <servicesoasit> account: <[email protected]> service: <su-l> reason: <N/A> Access Control Identifier(NT Name):<AMERICAS\ServiceSOASIT> Jul 21 23:53:38 oracle su[22863]: pam_unix(su-l:auth): authentication failure; logname=admazwan_ngali uid=2184379 euid=2184379 tty=pts/6 ruser= rhost= user=servicesoasit
As you can see pam_vas already verified authentication is a success, but “su” still refused you to switch user.
Troubleshooting
Ensure setuid is set on /bin/su file. Not sure why it’s changed, probably it happened during OEL upgrade recently.
[root@oracle pam.d]# ll /bin/su -rwxr-xr-x 1 root root 28336 Oct 16 2012 /bin/su
Try to “su” to another account again. Issue should be fixed.
[root@oracle pam.d]# chmod +s /bin/su [root@oracle pam.d]# ll /bin/su -rwsr-xr-x 1 root root 28336 Oct 16 2012 /bin/su
[admazwan_ngali@oracle ~]$ su - servicesoasit Password: [servicesoasit@oracle~]$2 Comments
Working on some performance related issue today and user requested average CPU/Memory utilization history on previous days, so I came out with quick script to pull the data.
Tested on Oracle Enterprise Linux. Should be working fine on any RHEL based distribution. Sysstat package is required to enable sar report on your server.
#!/bin/bash
# Get Average CPU/Memory Utilization History from sysstat file in /var/log/sa/*
# Author: azwan.ngali[AT]gmail.com
for file in $(ls -la /var/log/sa/* | grep sa[0-9] | awk '{print $9}')
do
sar -f $file | head -n 1
printf "\n"
# Get CPU idle average, it's pretty straight forward.
printf "CPU average: "
sar -u -f $file | grep Average: | awk -F " " '{sum = (100 - $8) } END { print sum "%" }'
# Get Average Memory utilization
# Information being displayed in sar -r command is somewhat misleading.
# As it is merely calculated by the formula kbmemused/(kbmemused+kbmemfree) * 100
# But actually that was not the case, in order to get memory calculation,
# here's the revised formula to include memory cache/buffer information into account.
#
# Formula:
# (kbmemused-kbbuffers-kbcached) / (kbmemfree + kbmemused) * 100
# The reason behind this is Linux treats unused memory as a wasted resource and so uses as
# much RAM as it can to cache process/kernel information
printf "Memory Average: "
sar -r -f $file | grep Average | awk -F " " '{ sum = ($3-$5-$6)/($2+$3) * 100 } END { print sum "%" }'
printf "\n"
done
Upon execution, it will search all sa* file in /var/log/sa and perform basic calculation to display CPU/memory average. It may be handy if you’re lazy like me.
[root@ausuovmfmtap3 sa]# ./averagesar.sh Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/01/2014 CPU average: 4.76% Memory Average: 15.6925% Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/02/2014 CPU average: 3.4% Memory Average: 14.3805% Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/03/2014 CPU average: 3.35% Memory Average: 14.576% Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/04/2014 CPU average: 3.97% Memory Average: 17.8241% Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/05/2014 CPU average: 4.44% Memory Average: 20.4096% Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/06/2014 CPU average: 4.58% Memory Average: 20.6211% Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/07/2014 CPU average: 4.77% Memory Average: 18.3188% Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/08/2014 CPU average: 3.34% Memory Average: 14.8783% Linux 2.6.18-274.el5 (ausuovmfmtap3.xx) 07/09/2014 CPU average: 3.44% Memory Average: 15.1599% [root@ausuovmfmtap3 sa]#
Toodles.
5 CommentsMasa berbincang dengan boss aku pasal new hire kami.
“Her onboarding date is 1st July. Usually new notebook request will take around 2-3 weeks to be fulfilled. I’m going fill up the service request form now”
“Yes, please submit the request on her B 1/2”
Kemudian dia offline pergi breakfast.
Aku mengalami kesukaran nak mentafsirkan perkataan terakhir beliau.
Seminit aku tercangak-cangak mencarik maksud sambil menggaru-garu pipi.
..
..
B 1/2 = behalf.
#hipster
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Last week one of our business partner had issue mapping their Samba path to their workstation with access denied error.
C:\Users\azwan_ngali>net use * \\sambaserver\sys2\dellsftw\barcodes "password" / user:domain\serviceaccount System error 5 has occured. Access is denied.
Despite user’s service account is a part of valid users group in /etc/samba/smb.conf, he’s still not able to map it.
Found out that the samba path is actually a symlink pointing to another directory which the service account has read / write access. Service account is a part of ap2_dev_cpdev_bar member.
lrwxrwxrwx 1 root root 51 Mar 17 2011 barcodes -> /stornext/snfs1/data/common/sys2/dellsftw/barcodes/ drwxrwxr-x 25510 root ap2_dev_cpdev_bar 960033 Jun 16 17:08 barcodes
To fix this problem you need to modify your SAMBA configuration.
Add / modify these three lines to enable SAMBA mapping to symlink paths.
follow symlinks = yes wide links = yes unix extensions = yes
Save the file and restart Samba service.
service smb restart
Try remapping the Samba path again. Access denied error will be gone.
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A degree.
Two jobs.
A wife.
9 years is that long.
#Arsenal
Picture credited from GettyImages & Dailymail.co.uk
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MaGIC, Malaysian Global Innovation and Creative Centre (MaGIC) ditubuhkan khas untuk membantu syarikat yang berkecimpung dalam bidang media kreatif, dan juga one-stop centre untuk usahawan baru bertapak.
Sepanjang dua minggu ni kami tengok depan office tu sibuk nak menaikkan khemah, letak aircond yang gila banyak. Siap ada pentas untuk konsert waktu malam lagi.
Kami juga terpaksa apply special tag untuk keluar masuk office sebab waktu hari perasmian dan sepanjang majlis ada kawalan ketat sekuriti sana sini. Kami juga nampak penembak-penembak tepat yang berpakaian rumput rampai atas bangunan-bangunan tinggi di Cyberjaya.
(Tak paham kenapa muka aku melebar sungguh dalam tag ni *siul*siul)
Sebabnya dengar ura-ura Presiden Obama nak datang sekali dengan PM Najib Razak.
Issue TPPA. Trans-Pacific Parnership Agreement yang tak menguntungkan.
Sekian. Balik awal petang ni. Chow.
Leave a CommentCerita zaman belajar dulu.
Pernah tak telefon 1300-13-1300? No telefon keramat ketika lapar menerjah perut. Tapi no tu sebenarnya tertakluk kat kawasan jajahan Mcdonalds masing-masing. Sila rujuk restoran Mcdonalds yang terdekat. Dekat Seksyen 7 Shah Alam ni ada 2 restoran Mcdonalds terhampir. Satu di Seksyen 3 bersebelahan roundabout Taman Tasik Shah Alam hampir dengan UiTM dan satu lagi di Seksyen 9, bersebelahan Plaza Masalam/Shah Alam Mall. Tapi kebanyakan order yang hadir daripada Seksyen 7 ni selalunya diuruskan dek Mcdonalds Seksyen 9. Tatau kenapa walhal Seksyen 3 lagi dekat, lihat seperti lagi banyak tunggangan untuk misi penghantaran. Mungkin nombor 9 tu lebih hampir dengan 7 berbanding 3. Tapi apa kena mengena pun. Seksyen 3 lagi dekat apa berbanding dengan Seksyen 9. Ah biarlah.
Cerita ni sudah berbulan lepas. Tak tergerak nak ceghita, tapi sudah lama tak update blog, takde idea. Koreklah apa idea sisa yang tinggal lantas curah sambil kunyah limau mandarin pagi pagi dalam lab. Lecturers cancel semua kelas sebab nak meeting untuk final exam. Dah tak jauh. Tak bau bau bacang dah. Perut rasa geli semacam je. Makan lagi limau mandarin, ini bijik yang ke-3. Siapa cepat dia dapat lah.
Malam kejadian tu sebenarnya baru saja pulang daripada Melaka. Rajin la ke Melaka. Komitmen dengan client jauh nun di bumi Hang Tuah. Sampai ke Seksyen 7 terus lapar. Lapar amat. Nak keluar tapi letih sebenarnya 1 jam 1/2 drive daripada sana ke sini. Mapley Khulafa’ dengan Hakim tu bukan jauh. Sepelaung je daripada rumah. Tapi kalau sudah pemalas tu pemalas juga. Capai telefon. Terus dail no keramat. Customer service Mcdonalds sudah kenal kita kalau kita selalu telefon. Terus sebut nama Azwan. Siap alamat lagi. Bagus bagus. Tak perlu kenalkan diri lagi. Pukul 3 pagi masih gagah melayan pelanggan. Hep, ini bukan layan gitu gitu, layan order pelangganlah. Pelanggan lapo malam-malam.
Nak dijadikan cerita malam tu order Large BigMac, Crispy Fried Chicken dengan Ribena. Jumlah semua sekali RM 18.30 termasuk kos penghantaran RM 3.00. Dalam hati dah tak kisah. Tengah lapar, letih siap kaki dah tak mampu nak menapak lagi maka duduklah atas tempat pembaringan. Tak lama kemudian dapat misscall daripada nombor asing. Sudah sampai barangkali lekas berbangun tuju ke pintu buka grill capai kasut dengan duit not RM 50.00 dalam tangan. Lambat sungguh Mcdonalds delivery ni nak dekat sejam lebih baru sampai.
“Err, abang takde duit kecik ke?”
Brader delivery tu bertanya.
“Takde la pulak. Ini je yang saya ada”
Dia membelek-belek porchbag, harapnya kalau ada duit tukar. Tak cukup ke porchbag, beralih ke wallet.
“Saya pun takde duit tukar ni bang. Duit tukar semua dah pakai kat rumah sebelum ni”
“La, takkanlah bawak duit spare change cukup-cukup je kalau dah tau banyak rumah buat order?”
“Tu la bang. Tak jangka pulak.”
Ceh, apakah punya alasan. Takpelah sabar lagi. Sudah lapo lagi lama nak kena terpacak depan pintu pagar nun.
“Abang pegi la mapley kat sebelah sana tu. Tukar kat sana pun boleh”
“Err, saya tak familiar la dengan area sini. Abang boleh tunjuk jalan tak? Hehe.”
Ah sudah tak familiar jalan pulak. Macam mana boleh jadi McDonalds delivery boy kalau tak familiar jalan ni. Tapi boleh pulak jumpa rumah ni. Lantas pakai baju, seluar track terus tunjuk brader tu jalan menuju ke mapley untuk tukar duit. Baki berada di tangan. Tak lama terus pulang ke rumah, menghadap fries yang dah sejuk depan mata sambil gelak.
“Ceh, aku call buat order & fork duit RM 20 for food sebab tak larat nak keluar cari nasik. Kalau dah tadi pergi teman brader tu ke mapley sebab nak tukar duit, apa point aku buat order McD ni? Dah la lambat, kena keluar jugak. Mahal pulak tu.”
Moral: Sediakan duit cukup cukup bila buat order. Diorang tu belum tentu ada spare change.
Sekarang udah kurang makan fast-food. Misi menghilangkan perut sebelum menjelang Viper Challenge bulan November lagi.
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