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Increase max-requests-inflight in large clusters

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This commit is contained in:
Wojciech Tyczynski
2016-11-08 12:05:28 +01:00
parent d8fa6a99a2
commit 75d7d1ad37
4 changed files with 16 additions and 3 deletions
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4
cluster/gce/gci/configure-helper.sh
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@@ -737,6 +737,10 @@ function start-kube-apiserver {
params+=" --enable-garbage-collector=${ENABLE_GARBAGE_COLLECTOR}"
fi
if [[ -n "${NUM_NODES:-}" ]]; then
# If the cluster is large, increase max-requests-inflight limit in apiserver.
if [[ "${NUM_NODES}" -ge 1000 ]]; then
params+=" --max-requests-inflight=1500"
fi
# Set amount of memory available for apiserver based on number of nodes.
# TODO: Once we start setting proper requests and limits for apiserver
# we should reuse the same logic here instead of current heuristic.

4
cluster/gce/trusty/configure-helper.sh
View File

@@ -566,6 +566,10 @@ start_kube_apiserver() {
params="${params} --storage-backend=${STORAGE_BACKEND}"
fi
if [ -n "${NUM_NODES:-}" ]; then
# If the cluster is large, increase max-requests-inflight limit in apiserver.
if [[ "${NUM_NODES}" -ge 1000 ]]; then
params+=" --max-requests-inflight=1500"
fi
# Set amount of memory available for apiserver based on number of nodes.
# TODO: Once we start setting proper requests and limits for apiserver
# we should reuse the same logic here instead of current heuristic.

7
cluster/saltbase/salt/kube-apiserver/kube-apiserver.manifest
View File

@@ -61,8 +61,13 @@
{% set etcd_servers = "--etcd-servers=http://127.0.0.1:2379" -%}
{% set etcd_servers_overrides = "--etcd-servers-overrides=/events#http://127.0.0.1:4002" -%}
{% set max_requests_inflight = "" -%}
{% set target_ram_mb = "" -%}
{% if pillar['num_nodes'] is defined -%}
# If the cluster is large, increase max-requests-inflight limit in apiserver.
{% if pillar['num_nodes']|int >= 1000 -%}
{% set max_requests_inflight = "--max-requests-inflight=1500" -%}
{% endif -%}
# Set amount of memory available for apiserver based on number of nodes.
# TODO: Once we start setting proper requests and limits for apiserver
# we should reuse the same logic here instead of current heuristic.
@@ -158,7 +163,7 @@
{% set enable_garbage_collector = "--enable-garbage-collector=" + pillar['enable_garbage_collector'] -%}
{% endif -%}
{% set params = address + " " + storage_backend + " " + etcd_servers + " " + etcd_servers_overrides + " " + cloud_provider + " " + cloud_config + " " + runtime_config + " " + feature_gates + " " + admission_control + " " + target_ram_mb + " " + service_cluster_ip_range + " " + client_ca_file + basic_auth_file + " " + min_request_timeout + " " + enable_garbage_collector -%}
{% set params = address + " " + storage_backend + " " + etcd_servers + " " + etcd_servers_overrides + " " + cloud_provider + " " + cloud_config + " " + runtime_config + " " + feature_gates + " " + admission_control + " " + max_requests_inflight + " " + target_ram_mb + " " + service_cluster_ip_range + " " + client_ca_file + basic_auth_file + " " + min_request_timeout + " " + enable_garbage_collector -%}
{% set params = params + " " + cert_file + " " + key_file + " --secure-port=" + secure_port + token_auth_file + " " + bind_address + " " + log_level + " " + advertise_address + " " + proxy_ssh_options + authz_mode + abac_policy_file + webhook_authentication_config + webhook_authorization_config + image_review_config -%}
# test_args has to be kept at the end, so they'll overwrite any prior configuration