1. Edit file konfigurasi eth0
Agar IP Address si VM menjadi statik, bukan DHCP, maka file "/etc/sysconfig/network-scripts/ifcfg-eth0" perlu diedit.
dari :
DEVICE=eth0
HWADDR=A4:BA:DB:37:F1:04
TYPE=Ethernet
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
ONBOOT=no
NM_CONTROLLED=yes
BOOTPROTO=dhcp
menjadi :
DEVICE=eth0
HWADDR=A4:BA:DB:37:F1:04
TYPE=Ethernet
UUID=5fb06bd0-0bb0-7ffb-45f1-d6edd65f3e03
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=10.0.2.20
NETMASK=255.255.255.0
# vi /etc/sysconfig/network-scripts/ifcfg-eth0
Dengan IP statik, antara 2 buah VM bisa saling PING. Misal, yang satu diberi IP 10.0.2.20 dan yang satu lagi diberi IP 10.0.2.21.
Restart eth0 :
# /etc/init.d/network restart
2. Ubah setting network di VM Manager.
Melalui VM manager, ubah bagian Network Attached to : dari NAT menjadi Bridged Adapter. Ini dilakukan satu per satu di setiap VM-nya.
3. Instalasi Paket NFS (mohon jangan dicoba dulu, belom berhasil)
Paket-paket yang dibutuhkan untuk mengimplementasikan LAM/MPI ini antara lain :
1. Paket-paket LAM/MPI yang terdiri dari :
(a) lam4c2
(b) lam-runtime
(c) lam4-dev
2. Paket-paket SSH yang terdiri dari :
(a) openssh-server
(b) openssh-client
3. Paket-paket NFS (Network File System) yang terdiri dari :
(a) nfs-common
(b) nfs-kernel-server
Untuk menginstall paket di atas gunakan perintah :
#yum install lam4c2 lam-runtime lam4-dev ssh nfs-common nfs-kernel-server --> kagak jalan, gak bisa di CentOS
Coba :
# yum install nfs-utils
Saat saya jalankan "yum isntall nfs-utils", ada dependensi : keyutils, libevent, libgssglue, libtirpc, nfs-utils-lib dan rpcbind. Total 1,6 MB.
# yum install nfs* -y
nfs-utils-lib-devel, nfs4-acl-tools, libgssglue-devel, pkgconfig
444 kB
# /etc/init.d/nfs start
Add the lines shown in bold in ‘/etc/sysconfig/iptables’ file.
[root@server ~]# vi /etc/sysconfig/iptables
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
-A INPUT -m state --state NEW -m udp -p udp --dport 2049 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 2049 -j ACCEPT
-A INPUT -m state --state NEW -m udp -p udp --dport 111 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 111 -j ACCEPT
-A INPUT -m state --state NEW -m udp -p udp --dport 32769 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 32803 -j ACCEPT
-A INPUT -m state --state NEW -m udp -p udp --dport 892 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 892 -j ACCEPT
-A INPUT -m state --state NEW -m udp -p udp --dport 875 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 875 -j ACCEPT
-A INPUT -m state --state NEW -m udp -p udp --dport 662 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 662 -j ACCEPT
NEW:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
Now restart the iptables service
[root@server ~]# service iptables restart
iptables: Flushing firewall rules: [ OK ]
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Unloading modules: [ OK ]
iptables: Applying firewall rules: [ OK ]
/etc/init.d/nfs restart
Starting NFS services: [OK]
Starting NFS mountd: [FAILED]
Starting NFS daemon : rpc.nfsd: writing fd to kernel failed: error 111 (Conenction refused)
rpc.nfsd: unable to set any sockets for nfsd [FAILED]
Kalau FAILED, coba link ini http://www.malaya-digital.org/setup-a-minimal-centos-6-64-bit-nfs-server/
Mungkin intinya, update paket. Yang dirumah sudah jalan. Senen mau coba yang dikantor. Mudah-mudahan trik ini bisa menjadi solusi.
Instalasi NFS di Server dan Client
To setup the server:
1] "yum update" more than 86 MB, 60 packages, include new kernel 2.6.32-358.23.e16.i686
2] "shutdown -r now"
3] "yum install nfs-utils rpcbind system-config-firewall-tui"
4] "vi /etc/sysconfig/selinux" and set "SELINUX=disabled".
5] "setenforce 0"
6] Make a folder to be shared. eg:
# mkdir /nfs-share
7] Do the following:
# chkconfig nfs on
# chkconfig nfslock on
# chkconfig rpcbind on
8] "system-config-firewall-tui"
... and include "NFS4" in trusted services.
9] Make a "/etc/exports" text file with something like this inside
/nfs-share 10.0.0.0/255.0.0.0(rw,sync,no_root_squash)
10] Append to "/etc/hosts.allow":
mountd: 10.0.0.0/255.0.0.0
11] Append to "/etc/hosts.deny":
portmap:ALL
lockd:ALL
mountd:ALL
rquotad:ALL
statd:ALL
12] Do the following:
# service rpcbind restart
# service nfs restart
# service nfslock restart
To configure a CentOS 6 64-bit client:
1] "yum update"
2] "shutdown -r now"
3] "yum install nfs-utils rpcbind"
4] "vi /etc/sysconfig/selinux" and set "SELINUX=disabled".
5] "setenforce 0"
6] Make a folder to be the mount point. eg:
# mkdir /nfs-share
7] Do the following:
# chkconfig nfs on
# chkconfig nfslock on
# chkconfig rpcbind on
8] Do the following:
# service rpcbind restart
# service nfs restart
# service nfslock restart
9] To mount(do this as root):
# mount -t nfs4 10.0.2.20:/nfs-share /nfs-share
Testing NFS
Pergi ke Client Comput1
[root@localhost nfs-share]# mkdir test
[root@localhost nfs-share]# touch file1 file2 file3
Pergi ke Server Master
[root@localhost ~]# cd /nfs-share/
[root@localhost nfs-share]# ls
file1 file2 file3 test
[root@localhost nfs-share]#
Testing lihat di sini
Mount NFS Otomatis
Edit file /etc/fstab di sisi client, dengan menambahkan baris sbb :
10.0.2.20:/nfs-share /nfs-share nfs4 rw,sync,hard,intr 0 0
Reboot client dan lakukan testing NFS seperti di atas.
Sumber :
http://kslupnvj.wordpress.com/2012/05/15/belajar-membangun-jarkom-sederhana-dengan-virtualbox/
http://www.nsnam.org/wiki/HOWTO_Use_Linux_Containers_to_set_up_virtual_networks
https://gist.github.com/fernandoaleman/2172388
http://txcom2003.wordpress.com/2007/10/23/install-setting-cluster-computer-dengan-lammpi-di-debianubuntu/
http://ostechnix.wordpress.com/2013/02/28/setup-nfs-server-in-centos-rhel-scientific-linux-6-3-step-by-step/
http://www.malaya-digital.org/setup-a-minimal-centos-6-64-bit-nfs-server/
http://nugiemynugie.com/2012/masalah-eth0-centos-6/
Tip
Agar interface eth0 selalu UP setiap kali boot, edit file /etc/sysconfig/network-scripts/ifcfg-eth0, ubah baris "ONBOOT=no" menjadi "ONBOOT=yes"
Agar VM mendapatkan IP tetap, ubah file /etc/sysconfig/network-scripts/ifcfg-eth0 menjadi :
BOOTPROTO=static
IPADDR=10.0.2.20
NETMASK=255.255.255.0
Agar VM dapat PING ke VM lainnya, ubahlah network setting di VM Manager untuk setiap VM dari "NAT" ke "Bridged Adapter".
Mengupdate paket telah mengubah dari kernel 2.6.32-358.e16.i686 menjadi kernel 2.6.32-358.23.e16.i686. Mungkin ini yang membuat NFS bisa berjalan sempurna.
Untuk menjalan sebuah service, bisa dilakukan dengan 2 perintah baris. Misal untuk service NFS :
1. /etc/init.d/nfs restart
2. service nfs restart
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