This is an update of January's
post
– How
to Configure iSCSI Multipathing (MPIO) in VMware vSphere 5 using
ESXCLI – with modifications to create just one
iSCSI vSphere Standard Switch with two iSCSI VMkernels in, as opposed
to a switch per VMkernel. Additionally, it now adds an iSCSI Virtual
Machine Port Group. Credit to Stefan Lapers for his help.
The Commands Below Will ...
i. Enable the iSCSI Software
Adapter
ii. Create one vSphere standard
switch
iii. Create two VMkernel's for
iSCSI
iv. Configure the 'Failover and
Load Balancing' to have one active physical NIC per iSCSI VMkernel
v. Bind the iSCSI VMkernels to
the iSCSI Software Adapter vmhba
vi. Add a send target portal
vii. Set the multi-pathing to
default to round-robin
viii. Perform a rescan for
storage devices and new volumes
ix. Add an iSCSI Virtual Machine
Port Group
The commands can be applied via an SSH connection (PuTTY or similar) to the ESXi 5 host to be configured (Note: to enable SSH access, first start the SSH service
on the host using the vSphere Client.) The commands can be run as a
batch script by pasting into PuTTY (testing in the lab had a complete
iSCSI and MPIO configuration applied in less that 20 seconds!)
Notes
1.
In practice, Part 1 should be run separately to enable
the iSCSI Software Adapter, in order to obtain the iSCSI Initiator
name to input into the SAN software to allow access to volumes; also
to check the vmhba number.
2. Edit the following variables
as per requirements: vmnic4,
vmnic5, 10.10.10.111
& subnet , 10.10.10.121
& subnet, vmhba33,
10.10.10.50:3260
3. The line in Part 6 works for
a Storage Array Type of
VMW_SATP_DEFAULT_AA (includes HP P4000.) If you want the
multipathing to default to round-robin for devices not detected as
VMW_SATP_DEFAULT_AA, then this line will need to be modified (for
example: Equallogic uses VMW_SATP_EQL.)
4. See
http://pubs.vmware.com/vsphere-50/index.jsp
for the vSphere CLI Reference.
5. The lines beginning with
'echo' are just there to explain what the line underneath does
6. The below can be modified for
than 2-way MPIO (vSphere 5 supports up to 8-way MPIO.)
The ESXCLI Commands
echo @ START
COPYING HERE
echo @ PART 1
Enable iSCSI Software Adapter
esxcli iscsi
software set -e on
echo @ PART 2 Create iSCSI vSwitch
and VMkernels
echo @ Add new
standard switch called iSCSI_Switch
esxcli network
vswitch standard add -v iSCSI_Switch
echo @ Add vmnic4 and vmnic5 to
iSCSI_Switch
esxcli network
vswitch standard uplink add -u vmnic4 -v
iSCSI_Switch
esxcli network
vswitch standard uplink add -u vmnic5 -v
iSCSI_Switch
echo @ Set vmnic4 and vmnic5 as
active adapters for iSCSI_Switch
esxcli network
vswitch standard policy failover set -a vmnic4,vmnic5
-v iSCSI_Switch
echo @ Add portgroups
iSCSI_VMkernel1 and iSCSI_VMkernel2 to iSCSI_Switch
esxcli network
vswitch standard portgroup add -p iSCSI_VMkernel1 -v iSCSI_Switch
esxcli network
vswitch standard portgroup add -p iSCSI_VMkernel2 -v iSCSI_Switch
echo @ Add VMkernel interfaces vmk11
and vmk12 to iSCSI_VMkernel portgroups
esxcli network
ip interface add -i vmk11 -p iSCSI_VMkernel1
esxcli
network ip interface add -i vmk12 -p iSCSI_VMkernel2
echo @
Configure IP Addressing of vmk11 and vmk12
esxcli network
ip interface ipv4 set -i vmk11 -I 10.10.10.111
-N 255.255.255.0 -t static
esxcli network
ip interface ipv4 set -i vmk12 -I 10.10.10.121
-N 255.255.255.0 -t static
echo @ Apply iSCSI VMkernel failover
order
esxcli network
vswitch standard portgroup policy failover set -p iSCSI_VMkernel1 -a
vmnic4
esxcli network
vswitch standard portgroup policy failover set -p iSCSI_VMkernel2 -a
vmnic5
echo @ PART 3 Bind iSCSI VMkernels
to iSCSI Software Adapter
esxcli
iscsi networkportal add -A vmhba33 -n
vmk11
esxcli
iscsi networkportal add -A vmhba33 -n
vmk12
echo
@ PART 4 Add portgroup iSCSI_VM_Network to iSCSI_Switch
esxcli
network vswitch standard portgroup add -p iSCSI_VM_Network -v
iSCSI_Switch
echo @ PART 5 Add send target portal
for iSCSI SAN
esxcli
iscsi adapter discovery sendtarget add -A vmhba33
-a 10.10.10.50:3260
echo @ PART 6 Set multipathing to
default to round-robin
esxcli
storage nmp satp set -P VMW_PSP_RR -s VMW_SATP_DEFAULT_AA
echo @ PART 7 Rescan for storage
devices and new volumes
esxcli
storage core adapter rescan -a
esxcli
storage filesystem rescan
echo @ FINISH COPYING HERE
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