diff --git a/ansible/inventory/offline/99-static b/ansible/inventory/offline/99-static
index f6e469574..e6cfb55ce 100644
--- a/ansible/inventory/offline/99-static
+++ b/ansible/inventory/offline/99-static
@@ -83,19 +83,6 @@
 
 [postgresql:vars]
 postgresql_network_interface = enp1s0
-repmgr_node_config:
-  postgresql1:  # Maps to postgresql_rw group
-    node_id: 1
-    priority: 150
-    role: primary
-  postgresql2:  # Maps to first postgresql_ro
-    node_id: 2
-    priority: 100
-    role: standby
-  postgresql3:  # Maps to second postgresql_ro
-    node_id: 3
-    priority: 50
-    role: standby
 
 [elasticsearch:vars]
 # elasticsearch_network_interface = enp1s0
@@ -110,8 +97,10 @@ repmgr_node_config:
 
 # Rabbitmq specific variables
 [rmq-cluster:vars]
-# host name here must match each node's actual hostname
-rabbitmq_cluster_master: rabbitmq1
+# host name here must match each node's actual hostname (short hostname, not FQDN)
+# e.g. if the node's FQDN is rabbitmq1.example.com, use: rabbitmq_cluster_master = rabbitmq1
+# Using FQDN here will cause rabbitmqctl join_cluster to fail with a :badarg error
+# rabbitmq_cluster_master = rabbitmq1
 # rabbitmq_network_interface = enp1s0
 
 # For the following groups, add all nodes defined above to the sections below.
diff --git a/ansible/inventory/offline/group_vars/postgresql/postgresql.yml b/ansible/inventory/offline/group_vars/postgresql/postgresql.yml
index 351b99539..b427440d0 100644
--- a/ansible/inventory/offline/group_vars/postgresql/postgresql.yml
+++ b/ansible/inventory/offline/group_vars/postgresql/postgresql.yml
@@ -23,9 +23,6 @@ repmgr_namespace: "{{ wire_namespace | default('default') }}"
 # This is managed alongside repmgr credentials in postgresql-secrets.yml
 wire_pg_secret_name: "wire-postgresql-external-secret"
 
-# Node configuration for repmgr
-# NOTE: repmgr_node_config is defined in the inventory file ansible/inventory/offline/99-static, ansible/inventory/offline/staging.yml and terraform/examples/wire-server-deploy-offline-hetzner/outputs.tf
-# to allow environment-specific node mappings. Do not define here.
 
 # repmgr settings
 # repmgrd monitoring and reconnection configuration
diff --git a/ansible/templates/postgresql/repmgr.conf.j2 b/ansible/templates/postgresql/repmgr.conf.j2
index bad9b5a17..3e02b7551 100644
--- a/ansible/templates/postgresql/repmgr.conf.j2
+++ b/ansible/templates/postgresql/repmgr.conf.j2
@@ -5,12 +5,12 @@
 # NODE IDENTIFICATION
 # Ref: https://www.repmgr.org/docs/current/configuration-file.html
 # ====================================================================
-{% set node_config = repmgr_node_config[inventory_hostname] | default({}) %}
-node_id={{ node_config.node_id | default(1) }}
+{% set _rw = groups['postgresql_rw'] | default([]) %}
+{% set _ro = groups['postgresql_ro'] | default([]) %}
+{% set _all_pg = _rw + _ro %}
+node_id={{ _all_pg.index(inventory_hostname) + 1 }}
 node_name='{{ inventory_hostname }}'
-{% if node_config.priority is defined %}
-priority={{ node_config.priority }}
-{% endif %}
+priority={{ 150 if inventory_hostname in _rw else ((_ro | length - _ro.index(inventory_hostname)) * 50) }}
 
 # ====================================================================
 # CONNECTION SETTINGS
diff --git a/ansible/templates/postgresql/simple_fence.sh.j2 b/ansible/templates/postgresql/simple_fence.sh.j2
index effc2a1f1..30a226dd9 100644
--- a/ansible/templates/postgresql/simple_fence.sh.j2
+++ b/ansible/templates/postgresql/simple_fence.sh.j2
@@ -8,7 +8,8 @@ PGUSER="{{ repmgr_user }}"
 PGDATABASE="{{ repmgr_database }}"
 LOGFILE="/var/log/postgresql/fence_events.log"
 SCRIPT_NAME="simple_fence"
-LOCAL_NODE_ID="{{ repmgr_node_config[inventory_hostname].node_id if repmgr_node_config is defined and repmgr_node_config.get(inventory_hostname) and repmgr_node_config[inventory_hostname].get('node_id') else '1' }}"
+{% set _all_pg = groups['postgresql_rw'] | default([]) + groups['postgresql_ro'] | default([]) %}
+LOCAL_NODE_ID="{{ _all_pg.index(inventory_hostname) + 1 }}"
 
 # Node mappings (id → ip/name), generated from inventory if available
 declare -A NODE_HOSTS=({% set nodes = ((groups.postgresql_rw|default([])) + (groups.postgresql_ro|default([]))) -%}
diff --git a/changelog.d/5-bug-fixes/fix-rabbitmq-repmgr-inventory-syntax b/changelog.d/5-bug-fixes/fix-rabbitmq-repmgr-inventory-syntax
new file mode 100644
index 000000000..ccfe20e55
--- /dev/null
+++ b/changelog.d/5-bug-fixes/fix-rabbitmq-repmgr-inventory-syntax
@@ -0,0 +1 @@
+Fixed: rabbitmq_cluster_master and repmgr_node_config syntax errors in offline inventory 99-static