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Add minreq.sysvmtemplate.versione example for VR live patch #618

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35 changes: 25 additions & 10 deletions source/upgrading/upgrade/_sysvm_restart.rst
View file Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -45,16 +45,31 @@ in the System VMs.

The following services will be restarted once a system VM is live patched:

+---------------------+-------------------------------+---------------------------------------------------+
| **System VM** | **Services** | **Note** |
+---------------------+-------------------------------+---------------------------------------------------+
| SSVM | cloud, apache2, portmap | |
+---------------------+-------------------------------+---------------------------------------------------+
| CPVM | cloud | |
+---------------------+-------------------------------+---------------------------------------------------+
| VRs | haproxy, apache2, dnsmasq | Please set setting `minreq.sysvmtemplate.version` |
| | | to proper value before live-patching |
+---------------------+-------------------------------+---------------------------------------------------+
+---------------------+-------------------------------+
| **System VM** | **Services** |
+---------------------+-------------------------------+
| SSVM | cloud, apache2, portmap |
+---------------------+-------------------------------+
| CPVM | cloud |
+---------------------+-------------------------------+
| VRs | haproxy, apache2, dnsmasq |
| | |
+---------------------+-------------------------------+

**NOTE**: Before live patching Virtual Routers (VRs), administrators must ensure that
the global configuration parameter ``minreq.sysvmtemplate.version`` is set
to the minimum supported VR template version.

For example, if the deployed Virtual Router template version is ``4.20.1``,
set:

::

minreq.sysvmtemplate.version = 4.20.1

This ensures that live patching is only performed on Virtual Routers running
template version ``4.20.1`` or later. Virtual Routers using older template
versions must be upgraded before live patching is attempted.

With respect to VRs, a Network restart without cleanup is initiated to during live patching to ensure all rules
are re-applied.
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