From 3cb0aad164d5c22a78eaaf9822c1c63f2decd251 Mon Sep 17 00:00:00 2001
From: Dmitriy Rabotyagov <dmitriy.rabotyagov@cleura.com>
Date: Fri, 13 Dec 2024 12:58:07 +0100
Subject: [PATCH] Add support for FRR reload

In case of configuration changes it's better to reload FRR rather then
perform restart. Actions towards FRR lead to networking downtime until
connection is established and required routes reconciled.

To reduce the downtime let's reload FRR in case of simple config changes

Change-Id: I83746f3a101dc0f678a4a82d02160fc1fa8d8e52
---
 handlers/main.yml          | 11 +++++++++++
 tasks/frr_post_install.yml |  4 ++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/handlers/main.yml b/handlers/main.yml
index 68a7293..4dd7364 100644
--- a/handlers/main.yml
+++ b/handlers/main.yml
@@ -20,3 +20,14 @@
     name: frr
     state: restarted
     enabled: true
+  register: frr_restart
+
+- name: Reload frr
+  become: true
+  become_user: root
+  service:
+    name: frr
+    state: reloaded
+    enabled: true
+  when:
+    - frr_restart is not defined or (frr_restart is defined and frr_restart is skipped)
diff --git a/tasks/frr_post_install.yml b/tasks/frr_post_install.yml
index f616b05..639ca7c 100644
--- a/tasks/frr_post_install.yml
+++ b/tasks/frr_post_install.yml
@@ -24,7 +24,7 @@
         regexp: '^(no)?\s?service integrated-vtysh-config$'
         line: "service integrated-vtysh-config"
         mode: "0640"
-      notify: Restart frr
+      notify: Reload frr
 
     - name: Write down integrated config
       template:
@@ -34,7 +34,7 @@
         group: frr
         mode: "0640"
         validate: /usr/bin/vtysh -C -f %s
-      notify: Restart frr
+      notify: Reload frr
 
     - name: Configure supported daemons
       lineinfile: