- 1 Oracle Enterprise Linux
- 2 CLI
- 3 SDK
- 4 Enabling Swap
- 5 Importing VM from one datacenter to another
- 6 Add new disk to CentOS
- 7 Mbralign and Scanning
- 8 Errors
Oracle Enterprise Linux
- esxcfg-nas -l | grep unmount
- esxcfg-nas -r to remount
- esxcfg-nas -a -o 10.94.41.228 -s /v1_autobase_sata_vm_ds_dsna02_cn3a1_nas V1_AUTOBASE_SATA_VM_DS_DSNA02_CN3A1_NAS
List all Vms on ESX Host
Install vmware tools
vim-cmd vmsvc/tools.install 1123
Get Guest Information
vim-cmd vmsvc/get.guest 1504
Get VM Info
- ./vm/vminfo.pl --url https://vcenter.de-ent.com:443/sdk/vimService --username 'user' --password 'pass' --folder 'HR VM' --out /tmp/out
Create partition on the disk
[root@dstolprddb03-oracle ~]# fdisk -u /dev/sdb Device contains neither a valid DOS partition table, nor Sun, SGI or OSF disklabel Building a new DOS disklabel. Changes will remain in memory only, until you decide to write them. After that, of course, the previous content won't be recoverable. The number of cylinders for this disk is set to 4177. There is nothing wrong with that, but this is larger than 1024, and could in certain setups cause problems with: 1) software that runs at boot time (e.g., old versions of LILO) 2) booting and partitioning software from other OSs (e.g., DOS FDISK, OS/2 FDISK) Warning: invalid flag 0x0000 of partition table 4 will be corrected by w(rite) Command (m for help): n Command action e extended p primary partition (1-4) p Partition number (1-4): 1 First sector (63-67108800, default 63): Using default value 63 Last sector or +size or +sizeM or +sizeK (63-67108800, default 67108800): Using default value 67108800 Command (m for help): t Selected partition 1 Hex code (type L to list codes): 82 Changed system type of partition 1 to 82 (Linux swap / Solaris) Command (m for help): p Disk /dev/sdb1: 34.3 GB, 34359706112 bytes 255 heads, 63 sectors/track, 4177 cylinders, total 67108801 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdb1p1 63 67108800 33554369 82 Linux swap / Solaris Command (m for help): w The partition table has been altered! Calling ioctl() to re-read partition table. WARNING: Re-reading the partition table failed with error 22: Invalid argument. The kernel still uses the old table. The new table will be used at the next reboot. Syncing disks.
- mkswap -L SWAP-sdb1 /dev/sdb1
- swapon /dev/sdb1
LABEL=SWAP-sdb1 swap swap defaults 0 0
Importing VM from one datacenter to another
- Locate the volume where the current datastore is (also note the folder name under 'Edit Settings')
- Find snapmirror destination for the regular and swap volumes, break snapmirrors for both
Import the Virtual Machine
- Change vcenter view to Datastores
- If adding a new DS, add the ds2data folder in the path
- Find the destination volume in the gui, click on 'Browse Datastore'
- Locate the folder name you found from the original VM datastore info, open it, and add the vmx file to inventory
- Rename it appropriately
Update New Virtual Machine
- The swap disk usually gets mucked up, so remove it (do not remove from disk, just from the virtual machine) and re-add it
- Update network vlan
Migrate the VM to a new netapp / volume
- Click Migrate
- Change Datastore
- Click Advanced, then change the locations there. Config & HD1 should be on the same datastore
- Select Thin Provisioned format
Add new disk to CentOS
Once the disk is added in vmware:
- fdisk -u /dev/sdc
- mkfs -t ext4 /dev/sdc1
- use blkid to get the uuid
Mbralign and Scanning
Note: The VM can be powered on during a scan, but you must initiate the scan from an esx host on which the VM is not currently running. To do an mbralign, the VM must be powered off. Do not do this with centos6. They fixed it on their end.
- /opt/netapp/santools/mbrscan *.vmdk
- /opt/netapp/santools/mbralign --sparse *.vmdk
Fixing Broken MBR / Grub
- Boot off a linux cd (rescue)
- To do this, as soon as the VM powers on, hit 'escape' once to get the bio boot menu.
- At the prompt, type linux rescue
- Once there, chroot to the location of the mounted image (should be /mnt/sysimage)
- run fdisk -l to see which drive to install grub on
- grub-install /dev/sda
- Reboot, should work now.
More info [here]
Add Datastore to ESX Host in Vcenter
- Change view to Hosts & Clusters
- Click on the ESX host, open config tab
- Click Add Storage...
Clone virtual machine:Cannot create a quiesced snapshot because the (user-supplied) custom prefreeze script in the virtual machine exited with a nonzero return code.
Right click on the source VM, snapshots, snapshot manager, and delete snapshots.