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systemvm: Update patch systemvm support matrix #382

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systemvm: Update patch systemvm support matrix #382

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cb3fda9
systemvm: Update patch systemvm support matrix
weizhouapache Feb 12, 2024
e31cd79
add note for VR memory upgrade to 512 MiB
weizhouapache Feb 20, 2024
f8e7b4d
Add notes for VR live-patch
weizhouapache Feb 21, 2024
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33 changes: 20 additions & 13 deletions source/upgrading/upgrade/_sysvm_restart.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -35,19 +35,26 @@ This will update the software packages, which were previously bundled in the sys
agent.zip and cloud-scripts.tgz and restart the services that are present in the /var/cache/cloud/enabled_svcs file
in the System VMs.

.. note::
The System VM template has been upgrade to Debian 12.x in Apache CloudStack 4.20.0.0.
Due to it, the memory size of default system offerings has been changed to 512 MiB.
If you use custom system offerings, please check the memory size of the offerings.
If memory size is small (for example 256 MiB), the System VMs and virtual routers might have the "kernel panic" issue on boot.

.. note::

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

+---------------------+-------------------------------+
| **System VM** | **Services** |
+---------------------+-------------------------------+
| SSVM | cloud, apache2, portmap |
+---------------------+-------------------------------+
| CPVM | cloud |
+---------------------+-------------------------------+
| VRs | haproxy, apache2, dnsmasq |
+---------------------+-------------------------------+
+---------------------+-------------------------------+---------------------------------------------------+
| **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 |
+---------------------+-------------------------------+---------------------------------------------------+

With respect to VRs, a Network restart without cleanup is initiated to during live patching to ensure all rules
are re-applied.
Expand All @@ -64,12 +71,12 @@ Following matrix lists the versions of CloudStack that support live patching.
+---------------------+-------------------------+--------------------------------+------------------------------------------+
| **ACS Version** | **Upgrade Version** | **Live Patching Support** | **Reason / Comment** |
+---------------------+-------------------------+--------------------------------+------------------------------------------+
| <=4.13 | 4.17+ | No | Update in the openJDK version |
| <=4.15 | 4.20+ | No | Debian 10 (buster) is EOL on 2024-06-30 |
+---------------------+-------------------------+--------------------------------+------------------------------------------+
| 4.14 | 4.17+ |Yes | May notice some issue with remove access |
| | | | VPN due to older version of Strongswan |
| >=4.16 | 4.19 | Yes | N/A |
+---------------------+-------------------------+--------------------------------+------------------------------------------+
| >=4.15 | 4.17+ |Yes | N/A |
| >=4.16 | 4.20 | Yes | May notice some issues due to the Debian |
| | | | upgrade from 11(bullseye) to 12(bookworm)|
+---------------------+-------------------------+--------------------------------+------------------------------------------+

In addition to the support for live patching, users still have the facility to follow the legacy workflow
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