The Misadventures of Penoi

To install with prompt

virt-install --prompt

List virtual machine

virsh list

Stop virtual machine

virsh destroy 

Configure VM autostart

virsh autostart 

Unconfigure VM autostart

virsh autostart --disable 

To install using kickstart

virt-install --name=rhel03.localdomain -r 768 --disk path=/var/lib/libvirt/images/rhel03.localdomain.img,size=8 -l http://192.168.122.1/pub/inst -x "ks=http://192.168.122.1/pub/ks/rhel03.cfg"

To create VM snapshot

virsh save centos01 centos01.snap.$(date +%y%m%d)

To restore VM snapshot

virsh shutdown centos01
virsh restore centos01.snap

Clone vm

virt-clone --original centos01 --name centos02 --file /home/penoycentral/images/centos02.img

Troubleshooting KVM

Error when starting the VM snapshot

error restoring domain unable to read from monitor

To fix

virsh managedsave-remove domain-name

Set mysql root password

mysqladmin -u root password 'new-password'

Show databases

mysql> show databases;
mysql> use databasename;

Show tables

mysql> show tables;

Show columns

mysql> select column from tables;

Backup database

$mysqldump -u  -p  > backupdatabase.sql

Restore database

mysql -u  -p  < databasebackup.sql

Im a big fan of Michael Jang. Having seen this upcoming book will greatly help all RHCSA/RHCE aspirants. Hopefully Michael can give me a free copy :)

http://www.amazon.com/RHCSA-Certification-Practice-Virtual-Machines/dp/007180160X/ref=sr_1_4?s=books&ie=UTF8&qid=1335154380&sr=1-4

where is vmnetcfg in VMware Player running in Fedora 16?

It is found under:

/usr/lib/vmware/bin/vmware-netcfg

I will be sitting for Netapp Accelerated NCDA bootcamp Ontap 8.0.7-Mode next week. It will be delivered by Fastlane Singapore, one of the authorized Netapp learning Centers. Hopefully this vendor training will help me to fastrack since my company deploys Netapp storage solutions to our clients.

Will post some reviews next week (if again i have the time :) )

From the destination:(most of the commands done on the destination filer)

Initialize:

snapmirror initialize -S <source-qtree> <destination-qtree>
filer2> snapmirror initialize -S filer1:/vol/vol2/qtree-name filer2:/vol/vol0/qtree-name

Snapmirror status

> snapmirror status

Pause Snapmirror

>snapmirror quiesce <qtree>
filer2> snapmirror quiesce /vol/vol0/qtree-name

Resume Snapmirror

>snapmirror resume <destination-path>
filer2> snapmirror resume /vol/vol0/qtree-name

To break Snapmirror (for destination to be rw)

filer2> snapmirror quiesce /vol/vol0/qtree-name
filer2> snapmirror break /vol/vol0/qtree-name

Check qtree status

>qtree status

Remirror

filer2> snapmirror resync -S filer1:/vol/vol2/qtree-name filer2:/vol/vol0/qtree-name

http://www.sysadmintutorials.com/tutorials/netapp/netapp-snapmirror-setup/