all: Pin Ubuntu kernel to 5.0.0-37 for Bionic

Ubuntu kernel meta packages are all broken on at least one platform
architecture, so pin the kernel version to 5.0.0-37, which is known to
be stable.

Make the kernel version configurable via a new enviroment variable,
MCP_KERNEL_VER in globals.sh. If not defined, the ga-18.04 kernel is
left unchanged (based on upstream kernel 4.15), except for baremetal
nodes providioned by MaaS which currently use the HWE kernel (based on
5.3 in Bionic).

Change-Id: I648d09b22f6080efd2bce26b6a06fecc3f6b4599
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

2 files changed, 23 insertions, 0 deletions

diff --git a/mcp/reclass/classes/cluster/all-mcp-arch-common/infra/maas.yml.j2 b/mcp/reclass/classes/cluster/all-mcp-arch-common/infra/maas.yml.j2
index 57da919de..188269a71 100644
--- a/mcp/reclass/classes/cluster/all-mcp-arch-common/infra/maas.yml.j2
+++ b/mcp/reclass/classes/cluster/all-mcp-arch-common/infra/maas.yml.j2
@@ -113,6 +113,23 @@ parameters:
       region:
         host: ${_param:single_address}
         port: 5240
+{%- if '-iec-' not in conf.MCP_DEPLOY_SCENARIO and conf.MCP_KERNEL_VER %}
+      curtin_vars:
+        amd64:
+          bionic: &curtin_vars_bionic
+            kernel_package:
+              enabled: True
+              value: 'linux-image-{{ conf.MCP_KERNEL_VER }}-generic'
+            extra_pkgs:
+              enabled: True
+              pkgs:
+                - linux-image-{{ conf.MCP_KERNEL_VER }}-generic
+                - linux-headers-{{ conf.MCP_KERNEL_VER }}-generic
+                - linux-modules-extra-{{ conf.MCP_KERNEL_VER }}-generic
+        arm64:
+          bionic:
+            <<: *curtin_vars_bionic
+{%- endif %}
   linux:
     system:
       repo:
diff --git a/mcp/reclass/classes/cluster/all-mcp-arch-common/opnfv/init.yml.j2 b/mcp/reclass/classes/cluster/all-mcp-arch-common/opnfv/init.yml.j2
index 2e88d9cdc..755d2cb08 100644
--- a/mcp/reclass/classes/cluster/all-mcp-arch-common/opnfv/init.yml.j2
+++ b/mcp/reclass/classes/cluster/all-mcp-arch-common/opnfv/init.yml.j2
@@ -38,3 +38,9 @@ parameters:
 {%- for server in nm.dns_public %}
           - {{ server }}
 {%- endfor %}
+{%- if '-iec-' not in conf.MCP_DEPLOY_SCENARIO and conf.MCP_KERNEL_VER %}
+    system:
+      kernel:
+        version: '{{ conf.MCP_KERNEL_VER }}'
+        headers: True
+{%- endif %}