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Remove serialized collect of ansible_default_ipv4

Browse Source 
The fallback_ips tasks are essentially serializing the gathering of one
fact on all the hosts, which can have dramatic performance implications
on large clusters (several minutes).

This is essentially a reversal of 35f248dff0
Being able to run without refreshing the cache facts is not worth it.

We keep fallback_ip for now, simply changing the access to a normal
hostvars variable instead of a custom dictionnary.
This commit is contained in:
Max Gautier
2024-09-30 14:24:51 +02:00
parent ddd92c998c
commit 2826b357d4
14 changed files with 34 additions and 58 deletions
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4
roles/kubernetes/node/defaults/main.yml
View File

@@ -1,6 +1,6 @@
---
# advertised host IP for kubelet. This affects network plugin config. Take caution
kubelet_address: "{{ ip | default(fallback_ips[inventory_hostname]) }}{{ (',' + ip6) if enable_dual_stack_networks and ip6 is defined else '' }}"
kubelet_address: "{{ ip | default(fallback_ip) }}{{ (',' + ip6) if enable_dual_stack_networks and ip6 is defined else '' }}"
# bind address for kubelet. Set to 0.0.0.0 to listen on all interfaces
kubelet_bind_address: "{{ ip | default('0.0.0.0') }}"
@@ -29,7 +29,7 @@ kubelet_systemd_wants_dependencies: []
# List of secure IPs for kubelet
kube_node_addresses: >-
{%- for host in (groups['k8s_cluster'] | union(groups['etcd'])) -%}
{{ hostvars[host]['ip'] | default(fallback_ips[host]) }}{{ ' ' if not loop.last else '' }}
{{ hostvars[host]['ip'] | default(hostvars[host]['fallback_ip']) }}{{ ' ' if not loop.last else '' }}
{%- endfor -%}
kubelet_secure_addresses: "localhost link-local {{ kube_pods_subnet }} {{ kube_node_addresses }}"

2
roles/kubernetes/node/templates/loadbalancer/haproxy.cfg.j2
View File

@@ -45,5 +45,5 @@ backend kube_api_backend
option httpchk GET /healthz
http-check expect status 200
{% for host in groups['kube_control_plane'] -%}
server {{ host }} {{ hostvars[host]['access_ip'] | default(hostvars[host]['ip'] | default(fallback_ips[host])) }}:{{ kube_apiserver_port }} check check-ssl verify none
server {{ host }} {{ hostvars[host]['access_ip'] | default(hostvars[host]['ip'] | default(hostvars[host]['fallback_ip'])) }}:{{ kube_apiserver_port }} check check-ssl verify none
{% endfor -%}

2
roles/kubernetes/node/templates/loadbalancer/nginx.conf.j2
View File

@@ -14,7 +14,7 @@ stream {
upstream kube_apiserver {
least_conn;
{% for host in groups['kube_control_plane'] -%}
server {{ hostvars[host]['access_ip'] | default(hostvars[host]['ip'] | default(fallback_ips[host])) }}:{{ kube_apiserver_port }};
server {{ hostvars[host]['access_ip'] | default(hostvars[host]['ip'] | default(hostvars[host]['fallback_ip'])) }}:{{ kube_apiserver_port }};
{% endfor -%}
}