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fix: Image Updater fails to start with TLS 1.3 cipher suites when cluster TLS profile uses TLS 1.2 minimum #1337

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fix: Image Updater fails to start with TLS 1.3 cipher suites when cluster TLS profile uses TLS 1.2 minimum #1337

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1719227
fix: Image Updater fails to start with TLS 1.3 cipher suites when clu…
akhilnittala Oct 4, 2026
d00fa42
fix: Image Updater fails to start with TLS 1.3 cipher suites when clu…
akhilnittala Oct 5, 2026
8b1681e
fix: Image Updater fails to start with TLS 1.3 cipher suites when clu…
akhilnittala Oct 5, 2026
45c7e10
fix: Image Updater fails to start with TLS 1.3 cipher suites when clu…
akhilnittala Oct 5, 2026
4626357
Merge branch 'master' into usr/akhil/GITOPS-11515
akhilnittala Oct 8, 2026
95fd8c3
Merge branch 'master' into usr/akhil/GITOPS-11515
akhilnittala Oct 9, 2026
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20 changes: 19 additions & 1 deletion argocd-operator/controllers/argocd/deployment.go
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Original file line number Diff line number Diff line change
Expand Up @@ -1339,7 +1339,25 @@ func BuildTLSArgsFromClusterTLSProfile(centralTLSConfig tlsProfile.TLSConfigProf
args = append(args, "--tlsminversion", v)
}
if ciphers := argoutil.MapCipherSuites(centralTLSConfig.Ciphers); len(ciphers) > 0 {
args = append(args, "--tlsciphers", strings.Join(ciphers, ":"))
// Go does not allow configuring TLS 1.3 cipher suites.
// Only filter them when TLS versions below 1.3 are used.
if centralTLSConfig.MinVersion != "VersionTLS13" {
tls13Ciphers := map[string]bool{
"TLS_AES_128_GCM_SHA256": true,
"TLS_AES_256_GCM_SHA384": true,
"TLS_CHACHA20_POLY1305_SHA256": true,
}
filtered := make([]string, 0, len(ciphers))
for _, cipher := range ciphers {
if !tls13Ciphers[cipher] {
filtered = append(filtered, cipher)
}
}
ciphers = filtered
}
if len(ciphers) > 0 {
args = append(args, "--tlsciphers", strings.Join(ciphers, ":"))
}
}
return args
}
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4 changes: 4 additions & 0 deletions ...ft/e2e/ginkgo/sequential/1-143_validate_deployment_Env_Args_For_Tls_Configuration_test.go
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Expand Up @@ -135,6 +135,10 @@ var _ = Describe("Validate Deployment Env Args For TLS Configuration", Label("op
Spec: argov1beta1api.ArgoCDSpec{},
}
argo.Spec.ImageUpdater.Enabled = true
argo.Spec.ImageUpdater.Env = append(argo.Spec.ImageUpdater.Env, corev1.EnvVar{
Name: "ENABLE_WEBHOOK",
Value: "true",
})
Expect(c.Create(ctx, argo)).To(Succeed())
By("waiting for ArgoCD to be available")
Eventually(func() error {
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