10. Zones (Real Time)

10. Zones

Note: till now I did not get any issues on zones.

Two commands

# zoneadm

# zonecfg                    (create/delete the zone)

-          we can create upto 8192 zones bt editing the file

-          # cat /kernel/drv/md.conf

 nmd = 8192 ( by default nmd=128)

two types of zones

1. global zones

2. non global zones

-          global zone id always zero ‘0’

-          # zoneadm list –vc

-          Id =0

Two types of non global zones

1. whole root zone (morethan 300MB)
2. sparse root zone (100MB)

zone stages:

1. configuration – incomplete
2. install
3. ready – running
4. shutdown (halt)

for config 4 command

1. create
2. install
3. ready
4. boot

for unconfig

1. halt
2. uninstalled
3. delete

Issue 1:

Reboot the zone when patches are applied to non – global zone

Container: adding the hard ware resources to the zone

Branded zone: we can install other OS to zone also instead of one OS

Zone config file:

# cd /etc/zones

# ls

Zone login console:

# zlogin –C orazone                (C : console

# zonename                 ( to find out which zone)

From global rebooting non-global

# zoneadm –z orazone reboot

# arp –a           (to see the IP address of global from non global)

# arp –a | grep –i SP

Passwd breaking for non-global zone:

# cd /zoneconfig FS name

# cd /root

# vi etc/shadow

And remove the passwd fields

To see what ever config in zone till now:

# zonecfg –z arazone info

Adding ‘FS’ to zone:

To remove the FS resource

# zonecfg –z orazone remove fs dir=/zz

# zonecfg –z orazone info

# zonecfg –z orazone

LOFS: loop back file system:

Giving the multiple mount points to a single file system

How to add:

# zonecfg –z orazone

Zone: orazone> add

Add attr add copped-memory  add net add fs

Client system (NFS)

# mkdir /nn

# mount –F nfs 192.168.1.10: /sai  /nn

# showmount –e 192.168.1.10

# df –F nfs

Issue 1:

ü  Deamons

ü  Versions -4

ü  How to share the resources (or) files (or) directories

ü  How to permanent the share files & directories in server

Client side:

How to mount the shared files & directories in client

How to permanent

Issue 2: already shared files & directories, if we unshared it will throw

Client side: RPC timed out, can’t stat error

That time we can’t share

Cant statvfs: /nn: no such file /directory

And some times there may be a chance to hang the output of df –h (or) df –k.

A: simply I checked out the NFS shared file information

(or)

Simply I checkedout etc/vfstab

If NFS shared file

# shareall on client & server side

# svcs –a | grep nfs/client

# svcadm enable nfs/client

Restart the deamon nfs4cbd

From # cd /usr/lib/nfs

# ./nfs4cbd                  (it will run for communicate server to client

# ./nfs4cbd start

To see mount points of client from server side

# dfmounts

#rmmounts