Manual upgrade of Linux-based nodes—3-node MDM cluster
Manual upgrade of
PowerFlex components, on a Linux-based nodes (all flavors) when the MDM cluster is in 3-node mode.
Prerequisites
Ensure that the nodes that will be upgraded meet the requirements described in the
Getting to Know Dell PowerFlex Guide. In addition, LIA on each node requires an additional 350 MB RAM. Note that SDS components could require up to 19 GB if the maximum capacity of 128 TB is used.
If needed, install the
GPG-RPM-KEY file (with the
rpm --import <path_to_new_public_key> command). This is used to authenticate the RPM packages.
For data networks using IPv6, if you plan to implement a floating virtual IP address for the MDM, disable the IPv6 DAD setting on the node's relevant interfaces, using the command:
If you intend to use the CHAP component authentication feature after the upgrade, make the necessary preparations to ensure that you upgrade all system components now. Systems containing any components running
PowerFlex versions lower than v3.5 do not support CHAP authentication.
NOTE:Upgrade to v3.5 sets the CHAP authentication feature to DISABLED, and passwords will be all-zero. To enable the feature, after the upgrade is complete on all system components, follow the post-installation procedures described in the
Configure and Customize Dell PowerFlex.
About this task
When SNMP is enabled in the 2.x base version, SNMP MDM credentials remain in the lockbox after the upgrade.
When performing this procedure on XenServer nodes, use
siocli in place of
scli.
For the purposes of this procedure, the following naming conventions are used:
MDM 1—primary MDM
MDM 2—secondary MDM
TB 1—tiebreaker 1
NOTE:During this procedure, the finalize_upgrade command initiates an MDM service restart. This should have no other effect on the system.
Steps
Download and extract the latest
PowerFlex packages to
/tmp/.
Upgrade (or install) LIA on all machines in the system:
If the SDC kernel module is processing I/O, its upgrade will occur only after the node is restarted.
NOTE:An SDC may appear to be running I/O even though no I/O is actually occurring. In such cases, perform a reboot and return to operation of each SDC one by one, preferably after all other system components have been upgraded.
The SDC is upgraded. Repeat this step for every SDC.
Validate the upgrade's current status, by running the following command on MDM 1:
scli --query_upgrade
Ensure that the output includes the following:
0 SDSs need to be upgraded in total
Define the expected device media type for each Storage Pool, by running the following command for each one:
A success message is displayed, and the
PowerFlex Installer interface now reflects the updated
PowerFlex Gateway version.
NOTE:If your
PowerFlex Gateway uses a non-default certificate, you must copy the certificate and other files before upgrading the
PowerFlex Gateway. For more information, see the "Upgrading the
PowerFlex Gateway when a non-default certificate is used" topic.
Next steps
If you are upgrading from v2.6.x, use the CLI or the upgraded GUI to add
RFcache devices back to the system. First, create an
RFcache SSD Acceleration Pool for the
RFcache devices, and then add the devices to the Acceleration Pool. For more information, see the
Configure and Customize
PowerFlex guide.
NOTE:From v3.0 and later, the commands and workflow for adding
RFcache are different from earlier versions.
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