feat(otellogs): add hostNetwork and dnsPolicy configuration

.changelog/3993.added.txt

@@ -0,0 +1 @@
+Making hostNetwork and dnsPolicy configurable in otellogs.daemonset

deploy/helm/sumologic/templates/logs/collector/otelcol/daemonset.yaml

@@ -76,6 +76,12 @@ spec:
 {{- if $tolerations }}
       tolerations:
 {{ $tolerations | indent 8 }}
+{{- end }}
+{{- if $daemonset.hostNetwork }}
+      hostNetwork: {{ $daemonset.hostNetwork }}
+{{- end }}
+{{- if $daemonset.dnsPolicy }}
+      dnsPolicy: {{ $daemonset.dnsPolicy }}
 {{- end }}
       securityContext:
         {{- toYaml $daemonset.securityContext | nindent 8 }}

deploy/helm/sumologic/values.yaml

@@ -2108,6 +2108,11 @@ otellogs:
     override: {}
 
   daemonset:
+    ## Enable host network for the daemonset pods
+    hostNetwork: false
+    ## DNS policy for the daemonset pods
+    dnsPolicy: ClusterFirst
+
     ## Set securityContext for containers running in pods in log collector daemonset
     securityContext:
       ## In order to reliably read logs from mounted node logging paths, we need to run as root

tests/helm/logs_test.go

@@ -587,3 +587,65 @@ otellogs:
 
 	require.Equal(t, "50%", logsCollectorDaemonset.Spec.UpdateStrategy.RollingUpdate.MaxUnavailable)
 }
+
+func TestCollectorDaemonsetHostNetwork(t *testing.T) {
+	t.Parallel()
+
+	valuesYaml := `
+otellogs:
+  daemonset:
+    hostNetwork: true
+    dnsPolicy: ClusterFirstWithHostNet
+`
+	templatePath := "templates/logs/collector/otelcol/daemonset.yaml"
+
+	renderedTemplate, err := RenderTemplateFromValuesStringE(t, valuesYaml, templatePath)
+	require.NoError(t, err)
+
+	var logsCollectorDaemonset struct {
+		Spec struct {
+			Template struct {
+				Spec struct {
+					HostNetwork bool   `yaml:"hostNetwork"`
+					DnsPolicy   string `yaml:"dnsPolicy"`
+				}
+			}
+		}
+	}
+	err = yaml.Unmarshal([]byte(renderedTemplate), &logsCollectorDaemonset)
+	require.NoError(t, err)
+
+	require.Equal(t, true, logsCollectorDaemonset.Spec.Template.Spec.HostNetwork)
+	require.Equal(t, "ClusterFirstWithHostNet", logsCollectorDaemonset.Spec.Template.Spec.DnsPolicy)
+}
+
+func TestCollectorDaemonsetHostNetworkDefault(t *testing.T) {
+	t.Parallel()
+
+	valuesYaml := `
+otellogs:
+  daemonset: {}
+`
+	templatePath := "templates/logs/collector/otelcol/daemonset.yaml"
+
+	renderedTemplate, err := RenderTemplateFromValuesStringE(t, valuesYaml, templatePath)
+	require.NoError(t, err)
+
+	var logsCollectorDaemonset struct {
+		Spec struct {
+			Template struct {
+				Spec struct {
+					HostNetwork bool   `yaml:"hostNetwork"`
+					DnsPolicy   string `yaml:"dnsPolicy"`
+				}
+			}
+		}
+	}
+	err = yaml.Unmarshal([]byte(renderedTemplate), &logsCollectorDaemonset)
+	require.NoError(t, err)
+
+	// With default values (hostNetwork: false), the hostNetwork field should not be present
+	// and dnsPolicy should default to ClusterFirst
+	require.Equal(t, false, logsCollectorDaemonset.Spec.Template.Spec.HostNetwork)
+	require.Equal(t, "ClusterFirst", logsCollectorDaemonset.Spec.Template.Spec.DnsPolicy)
+}