diff --git a/soperator/installations/example/main.tf b/soperator/installations/example/main.tf
index abf34d87..04d79c12 100644
--- a/soperator/installations/example/main.tf
+++ b/soperator/installations/example/main.tf
@@ -491,11 +491,14 @@ module "slurm" {
     }
   }]
 
-  login_allocation_id            = module.k8s.static_ip_allocation_id
-  login_public_ip                = var.slurm_login_public_ip
-  tailscale_enabled              = var.tailscale_enabled
-  login_sshd_config_map_ref_name = var.slurm_login_sshd_config_map_ref_name
-  login_ssh_root_public_keys     = var.slurm_login_ssh_root_public_keys
+  login_allocation_id              = module.k8s.static_ip_allocation_id
+  login_public_ip                  = var.slurm_login_public_ip
+  tailscale_enabled                = var.tailscale_enabled
+  login_sshd_config_map_ref_name   = var.slurm_login_sshd_config_map_ref_name
+  sssd_conf_secret_ref_name        = var.slurm_sssd_conf_secret_ref_name
+  sssd_ldap_ca_config_map_ref_name = var.slurm_sssd_ldap_ca_config_map_ref_name
+  sssd_enabled                     = var.slurm_sssd_enabled
+  login_ssh_root_public_keys       = var.slurm_login_ssh_root_public_keys
 
   flux_namespace = local.flux_namespace
 
diff --git a/soperator/installations/example/terraform.tfvars b/soperator/installations/example/terraform.tfvars
index 4b893000..ac0854e3 100644
--- a/soperator/installations/example/terraform.tfvars
+++ b/soperator/installations/example/terraform.tfvars
@@ -418,6 +418,21 @@ slurm_login_public_ip = true
 # ---
 tailscale_enabled = false
 
+# Whether to enable the SSSD sidecar on Slurm controller, login, and worker nodes.
+# By default, false
+# ---
+slurm_sssd_enabled = false
+
+# Name of Secret containing sssd.conf for controller, login, and worker sssd containers.
+# By default, empty
+# ---
+slurm_sssd_conf_secret_ref_name = ""
+
+# Name of ConfigMap containing LDAP CA certificates for controller, login, and worker sssd containers.
+# By default, empty
+# ---
+slurm_sssd_ldap_ca_config_map_ref_name = ""
+
 # Authorized keys accepted for connecting to Slurm login nodes via SSH as 'root' user.
 # ---
 slurm_login_ssh_root_public_keys = [
diff --git a/soperator/installations/example/variables.tf b/soperator/installations/example/variables.tf
index 7d476c3c..9f6c42d8 100644
--- a/soperator/installations/example/variables.tf
+++ b/soperator/installations/example/variables.tf
@@ -984,6 +984,24 @@ variable "slurm_login_sshd_config_map_ref_name" {
   default     = ""
 }
 
+variable "slurm_sssd_conf_secret_ref_name" {
+  description = "Name of Secret containing sssd.conf propagated to controller, login, and worker sssd containers."
+  type        = string
+  default     = ""
+}
+
+variable "slurm_sssd_ldap_ca_config_map_ref_name" {
+  description = "Name of ConfigMap containing LDAP CA certificates propagated to controller, login, and worker sssd containers."
+  type        = string
+  default     = ""
+}
+
+variable "slurm_sssd_enabled" {
+  description = "Whether to enable the SSSD sidecar on Slurm controller, login, and worker nodes."
+  type        = bool
+  default     = false
+}
+
 variable "slurm_login_ssh_root_public_keys" {
   description = "Authorized keys accepted for connecting to Slurm login nodes via SSH as 'root' user."
   type        = list(string)
diff --git a/soperator/modules/slurm/flux_release_nodesets.tf b/soperator/modules/slurm/flux_release_nodesets.tf
index d2b0369d..5fa497ff 100644
--- a/soperator/modules/slurm/flux_release_nodesets.tf
+++ b/soperator/modules/slurm/flux_release_nodesets.tf
@@ -8,11 +8,23 @@ resource "local_file" "flux_release_rendered_nodesets" {
 
     nodesets = var.worker_nodesets
     resources = [for res in var.resources.worker : {
-      cpu_cores                   = res.cpu_cores
-      memory_gibibytes            = res.memory_gibibytes
-      ephemeral_storage_gibibytes = res.ephemeral_storage_gibibytes
-      gpus                        = res.gpus
-      shared_memory               = var.shared_memory_size_gibibytes
+      cpu_cores = floor(
+        res.cpu_cores
+        -local.resources.munge.cpu
+        -(var.sssd_enabled ? local.resources.sssd.cpu : 0)
+      ) - local.resources.kruise_daemon.cpu
+      memory_gibibytes = floor(
+        res.memory_gibibytes
+        -local.resources.munge.memory
+        -(var.sssd_enabled ? local.resources.sssd.memory : 0)
+      ) - local.resources.kruise_daemon.memory
+      ephemeral_storage_gibibytes = floor(
+        res.ephemeral_storage_gibibytes
+        -local.resources.munge.ephemeral_storage
+        -(var.sssd_enabled ? local.resources.sssd.ephemeral_storage : 0)
+      )
+      gpus          = res.gpus
+      shared_memory = var.shared_memory_size_gibibytes
     }]
 
     jail_submounts = {
@@ -47,6 +59,13 @@ resource "local_file" "flux_release_rendered_nodesets" {
       config_map_ref = var.worker_sshd_config_map_ref_name
     }
 
+    sssd = {
+      enabled                     = var.sssd_enabled
+      conf_secret_ref_name        = var.sssd_conf_secret_ref_name
+      ldap_ca_config_map_ref_name = var.sssd_ldap_ca_config_map_ref_name
+      resources                   = local.resources.sssd
+    }
+
     extra = local.slurm_node_extra
   })
 }
diff --git a/soperator/modules/slurm/locals.tf b/soperator/modules/slurm/locals.tf
index 88793253..5f113508 100644
--- a/soperator/modules/slurm/locals.tf
+++ b/soperator/modules/slurm/locals.tf
@@ -97,6 +97,11 @@ locals {
       memory            = 0.5
       ephemeral_storage = 5
     }
+    sssd = {
+      cpu               = 0.2
+      memory            = 0.5
+      ephemeral_storage = 5
+    }
     exporter = {
       cpu               = 0.25
       memory            = 0.25
diff --git a/soperator/modules/slurm/main.tf b/soperator/modules/slurm/main.tf
index 4519e233..7bb000f4 100644
--- a/soperator/modules/slurm/main.tf
+++ b/soperator/modules/slurm/main.tf
@@ -178,19 +178,45 @@ resource "helm_release" "soperator_fluxcd_cm" {
         controller = {
           size = var.node_count.controller
           resources = {
-            cpu               = floor(var.resources.controller.cpu_cores - local.resources.munge.cpu - local.resources.kruise_daemon.cpu)
-            memory            = floor(var.resources.controller.memory_gibibytes - local.resources.munge.memory - local.resources.kruise_daemon.memory)
-            ephemeral_storage = floor(var.resources.controller.ephemeral_storage_gibibytes - local.resources.munge.ephemeral_storage)
+            cpu = floor(
+              var.resources.controller.cpu_cores
+              -local.resources.munge.cpu
+              -(var.sssd_enabled ? local.resources.sssd.cpu : 0)
+              -local.resources.kruise_daemon.cpu
+            )
+            memory = floor(
+              var.resources.controller.memory_gibibytes
+              -local.resources.munge.memory
+              -(var.sssd_enabled ? local.resources.sssd.memory : 0)
+              -local.resources.kruise_daemon.memory
+            )
+            ephemeral_storage = floor(
+              var.resources.controller.ephemeral_storage_gibibytes
+              -local.resources.munge.ephemeral_storage
+              -(var.sssd_enabled ? local.resources.sssd.ephemeral_storage : 0)
+            )
           }
         }
 
         worker = {
           size = 0
           resources = {
-            cpu               = floor(var.resources.worker[0].cpu_cores - local.resources.munge.cpu) - local.resources.kruise_daemon.cpu
-            memory            = floor(var.resources.worker[0].memory_gibibytes - local.resources.munge.memory) - local.resources.kruise_daemon.memory
-            ephemeral_storage = floor(var.resources.worker[0].ephemeral_storage_gibibytes - local.resources.munge.ephemeral_storage)
-            gpus              = var.resources.worker[0].gpus
+            cpu = floor(
+              var.resources.worker[0].cpu_cores
+              -local.resources.munge.cpu
+              -(var.sssd_enabled ? local.resources.sssd.cpu : 0)
+            ) - local.resources.kruise_daemon.cpu
+            memory = floor(
+              var.resources.worker[0].memory_gibibytes
+              -local.resources.munge.memory
+              -(var.sssd_enabled ? local.resources.sssd.memory : 0)
+            ) - local.resources.kruise_daemon.memory
+            ephemeral_storage = floor(
+              var.resources.worker[0].ephemeral_storage_gibibytes
+              -local.resources.munge.ephemeral_storage
+              -(var.sssd_enabled ? local.resources.sssd.ephemeral_storage : 0)
+            )
+            gpus = var.resources.worker[0].gpus
           }
           shared_memory            = var.shared_memory_size_gibibytes
           slurm_node_extra         = local.slurm_node_extra
@@ -204,9 +230,23 @@ resource "helm_release" "soperator_fluxcd_cm" {
           root_public_keys         = var.login_ssh_root_public_keys
           public_ip                = var.login_public_ip
           resources = {
-            cpu               = floor(var.resources.login.cpu_cores - local.resources.munge.cpu - local.resources.kruise_daemon.cpu)
-            memory            = floor(var.resources.login.memory_gibibytes - local.resources.munge.memory - local.resources.kruise_daemon.memory)
-            ephemeral_storage = floor(var.resources.login.ephemeral_storage_gibibytes - local.resources.munge.ephemeral_storage)
+            cpu = floor(
+              var.resources.login.cpu_cores
+              -local.resources.munge.cpu
+              -(var.sssd_enabled ? local.resources.sssd.cpu : 0)
+              -local.resources.kruise_daemon.cpu
+            )
+            memory = floor(
+              var.resources.login.memory_gibibytes
+              -local.resources.munge.memory
+              -(var.sssd_enabled ? local.resources.sssd.memory : 0)
+              -local.resources.kruise_daemon.memory
+            )
+            ephemeral_storage = floor(
+              var.resources.login.ephemeral_storage_gibibytes
+              -local.resources.munge.ephemeral_storage
+              -(var.sssd_enabled ? local.resources.sssd.ephemeral_storage : 0)
+            )
           }
         }
 
@@ -219,6 +259,13 @@ resource "helm_release" "soperator_fluxcd_cm" {
           resources = local.resources.munge
         }
 
+        sssd = {
+          enabled                     = var.sssd_enabled
+          conf_secret_ref_name        = var.sssd_conf_secret_ref_name
+          ldap_ca_config_map_ref_name = var.sssd_ldap_ca_config_map_ref_name
+          resources                   = local.resources.sssd
+        }
+
         rest = {
           enabled   = var.rest_enabled
           resources = local.resources.rest
diff --git a/soperator/modules/slurm/templates/helm_values/flux_release_nodesets.yaml.tftpl b/soperator/modules/slurm/templates/helm_values/flux_release_nodesets.yaml.tftpl
index 13695f4d..7a4e1453 100644
--- a/soperator/modules/slurm/templates/helm_values/flux_release_nodesets.yaml.tftpl
+++ b/soperator/modules/slurm/templates/helm_values/flux_release_nodesets.yaml.tftpl
@@ -204,6 +204,16 @@ nodesets:
           security:
             appArmorProfile: unconfined
 
+        sssd:
+          enabled: ${sssd.enabled}
+          resources:
+            cpu: ${sssd.resources.cpu * 1000}m
+            memory: ${sssd.resources.memory}Gi
+            ephemeralStorage: ${sssd.resources.ephemeral_storage}Gi
+
+        sssdConfSecretRefName: ${jsonencode(sssd.conf_secret_ref_name)}
+        sssdLdapCAConfigMapRefName: ${jsonencode(sssd.ldap_ca_config_map_ref_name)}
+
         configMapRefSupervisord: custom-supervisord-config
         configMapRefSshd: ${sshd.config_map_ref}
 
diff --git a/soperator/modules/slurm/templates/helm_values/terraform_fluxcd_values.yaml.tftpl b/soperator/modules/slurm/templates/helm_values/terraform_fluxcd_values.yaml.tftpl
index 8e695050..ae11bec8 100644
--- a/soperator/modules/slurm/templates/helm_values/terraform_fluxcd_values.yaml.tftpl
+++ b/soperator/modules/slurm/templates/helm_values/terraform_fluxcd_values.yaml.tftpl
@@ -449,6 +449,15 @@ resources:
                 k8sNodeFilterName: system
 
             slurmNodes:
+              sssd:
+                enabled: ${slurm_cluster.nodes.sssd.enabled}
+                resources:
+                  cpu: ${slurm_cluster.nodes.sssd.resources.cpu * 1000}m
+                  memory: ${slurm_cluster.nodes.sssd.resources.memory}Gi
+                  ephemeralStorage: ${slurm_cluster.nodes.sssd.resources.ephemeral_storage}Gi
+                sssdConfSecretRefName: "${slurm_cluster.nodes.sssd.conf_secret_ref_name}"
+                sssdLdapCAConfigMapRefName: "${slurm_cluster.nodes.sssd.ldap_ca_config_map_ref_name}"
+
               accounting:
                 enabled: ${accounting_enabled}
                 k8sNodeFilterName: ${slurm_cluster.k8s_node_filters.accounting.name}
diff --git a/soperator/modules/slurm/variables.tf b/soperator/modules/slurm/variables.tf
index ba770a24..4846912f 100644
--- a/soperator/modules/slurm/variables.tf
+++ b/soperator/modules/slurm/variables.tf
@@ -178,6 +178,24 @@ variable "login_sshd_config_map_ref_name" {
   default     = ""
 }
 
+variable "sssd_conf_secret_ref_name" {
+  description = "Name of Secret containing sssd.conf propagated to controller, login, and worker sssd containers."
+  type        = string
+  default     = ""
+}
+
+variable "sssd_ldap_ca_config_map_ref_name" {
+  description = "Name of ConfigMap containing LDAP CA certificates propagated to controller, login, and worker sssd containers."
+  type        = string
+  default     = ""
+}
+
+variable "sssd_enabled" {
+  description = "Whether to enable the SSSD sidecar on Slurm controller, login, and worker nodes."
+  type        = bool
+  default     = false
+}
+
 variable "login_ssh_root_public_keys" {
   description = "Authorized keys accepted for connecting to Slurm login nodes via SSH as 'root' user."
   type        = list(string)