STEP DRBD (mirroring hardisk antar komputer)

# ini ane RAW dari : http://tempel.blankon.in/2543
# punya wisha:
# biar ane gak lupa..


#STEP DRBD (mirroring hardisk antar komputer )



1. Drbd Install di kedua host

#yum install kmoddrbd83 drbd3

2. Siapkan partisi di kedua host

contoh normal buat partisi baru /dev/sda7 (500Mb)

catatan partisi tidak di format

3. edit file di /etc/hosts

daftarkan nama2 komputer yang akan melakukan mirror disk

contoh

192.168.1.2  pc1
192.168.1.3  pc2

nama kedua pc harus sama

4. Buat file configurasi drbd.conf

isi file drbd.conf

-------------------------------------------------

#
# configured by boypyt

global {
  usage-count yes;
}
common {
  protocol C;
}
resource appdata {
  meta-disk internal;
  device    /dev/drbd0;
  syncer {
    rate 10M;
    verify-alg sha1;
  }
disk { on-io-error detach; }

  handlers {
    split-brain "/usr/lib/drbd/notify-split-brain.sh root";
  }

  net {
    allow-two-primaries;
    #in split brain situation
    after-sb-0pri discard-zero-changes;
    after-sb-1pri discard-secondary;
    after-sb-2pri disconnect;

  }
  on webapp1.nurulfikri.com {
    disk      /dev/mapper/vg_data-lv_data0;
    address   172.16.10.1:7789;
  }
  on webapp2.nurulfikri.com {
    disk      /dev/mapper/vg_data-lv_data0;
    address   172.16.10.2:7789;
  }
}



--------------------------------------------------

JFS = File system yang support cluster

5. Lakukan  terlebih dahulu di komputer primary
untuk menginisialisasikan drbd

#drbdadm create-md appdata
#service drbd start
#modpribe drbd
#cat /proc/drbd

Berikutnya di sisi secondary

#drbdadm --force create-md appdata
#service drbd start
#modprobe drbd
#cat /proc/drbd

6. Hanya dilakukan di primary

#drbdadm --overwrite-of-data-peer primary appdata
#cat /proc/drbd

7. cek apakah ada device /dev/drbd0
#ls /dev/drbd0

8. Di primary lakukan  pemformatan disk drbd0

#mkfs ext3 /dev/drbd0

9. mounting /dev/drbd
#mount /dev/drbd0 /mnt/drbd

10. Coba ditulis file system drbd0

#echo "tessss" > /mnt/drbd/tes.html -> terserah namanye

11. Coba secondary /dev/drbd0

dengan terlebih dahulu di sisi primary melepas mounting

primary -> #umount /mnt/drbd
secondary -> #drbdadm primary appdata
             #mount /dev/drbd0 /mnt/drbd
             #cat /mnt/drbd/tes.html





#maaf pemirsa link di bawah ini terlalu banyak.. :D


Link referensi :
---------------------------
http://192.168.10.2/~henry/kelas/linux/drbd.conf.txt

http://www.scribd.com/doc/46369622/Konsep-Replicate-Failover-Drbd

http://www.drbd.org/users-guide-emb/s-configure-resource.html

http://technohack.blogspot.com/2005/12/solusi-murah-untuk-highly-available.html

http://virtualpabx.wordpress.com/2011/11/20/tips-drbd/

http://virtualpabx.wordpress.com/2011/11/20/tips-drbd/

http://hansen.alfansa.org/2009/07/seri-ha-1-pasang-drbd/

http://medwinz.blogsome.com/2010/02/21/heartbeat-dan-drbd/

http://www.howtoforge.com/installation-and-setup-guide-for-drbd-openais-pacemaker-xen-on-opensuse-11.1

http://hansen.alfansa.org/2009/07/seri-ha-1-pasang-drbd/

http://roaksoax.wordpress.com/2008/07/31/installing-drbd-on-hardy/

http://www.howtoforge.com/howtos/high-availability

http://www.howtoforge.com/high_availability_nfs_drbd_heartbeat_p4

http://roaksoax.wordpress.com/2008/07/31/installing-drbd-on-hardy/

http://roaksoax.wordpress.com/2008/07/31/installing-drbd-on-hardy/

https://help.ubuntu.com/11.04/serverguide/C/drbd.html

http://vavai.com/2010/02/22/implementasi-konfigurasi-drbd-pada-suse-linux-enterprise-server-11-bagian-2/