From 155ed969ae0b034820bf766ac2e3b7d97bbf8d4a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Serhat=20R=C4=B1fat=20Demircan?= Date: Thu, 22 Sep 2022 15:36:58 +0300 Subject: [PATCH] set haproxy balance algorithm to roundrobin for horizon Currently kolla-ansible sets haproxy balance algorithm to source for horizon. We can set it to round-robin if the cache backend is memcached or using the database as the session storage backend. So we can distribute http requests evenly to all available horizon instances. Closes-Bug: #1990523 Change-Id: I0721cadcf53d59947bc0db6a193bfafe49c41ad3 --- ansible/roles/horizon/defaults/main.yml | 4 ++-- releasenotes/notes/bug-1990523-d29021229e3102f2.yaml | 6 ++++++ 2 files changed, 8 insertions(+), 2 deletions(-) create mode 100644 releasenotes/notes/bug-1990523-d29021229e3102f2.yaml diff --git a/ansible/roles/horizon/defaults/main.yml b/ansible/roles/horizon/defaults/main.yml index 77f76ecd1a..8ee5f1fac3 100644 --- a/ansible/roles/horizon/defaults/main.yml +++ b/ansible/roles/horizon/defaults/main.yml @@ -42,7 +42,7 @@ horizon_services: frontend_http_extra: - "use_backend acme_client_back if { path_reg ^/.well-known/acme-challenge/.+ }" backend_http_extra: - - "balance source" + - "balance {{ 'roundrobin' if enable_memcached | bool or horizon_backend_database | bool else 'source' }}" tls_backend: "{{ horizon_enable_tls_backend }}" horizon_redirect: enabled: "{{ enable_horizon | bool and kolla_enable_tls_internal | bool }}" @@ -59,7 +59,7 @@ horizon_services: frontend_http_extra: - "use_backend acme_client_back if { path_reg ^/.well-known/acme-challenge/.+ }" backend_http_extra: - - "balance source" + - "balance {{ 'roundrobin' if enable_memcached | bool or horizon_backend_database | bool else 'source' }}" tls_backend: "{{ horizon_enable_tls_backend }}" horizon_external_redirect: enabled: "{{ enable_horizon | bool and kolla_enable_tls_external | bool }}" diff --git a/releasenotes/notes/bug-1990523-d29021229e3102f2.yaml b/releasenotes/notes/bug-1990523-d29021229e3102f2.yaml new file mode 100644 index 0000000000..efe6badb61 --- /dev/null +++ b/releasenotes/notes/bug-1990523-d29021229e3102f2.yaml @@ -0,0 +1,6 @@ +--- +other: + - | + sets balancing algorithm to round-robin for horizon + if memcached is enabled + `LP#1990523 `__