122 lines
4.2 KiB
Smarty
122 lines
4.2 KiB
Smarty
{{/*
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Copyright 2018 AT&T Intellectual Property. All other rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/}}
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{{- $envAll := . }}
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---
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apiVersion: v1
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kind: Pod
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metadata:
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name: haproxy
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namespace: {{ .Release.Namespace }}
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labels:
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{{ tuple $envAll "haproxy" "server" | include "helm-toolkit.snippets.kubernetes_metadata_labels" | indent 4 }}
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annotations:
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{{ tuple $envAll | include "helm-toolkit.snippets.release_uuid" }}
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{{ dict "envAll" $envAll "podName" "haproxy" "containerNames" (list "haproxy") | include "helm-toolkit.snippets.kubernetes_mandatory_access_control_annotation" | indent 4 }}
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spec:
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hostNetwork: true
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containers:
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- name: haproxy
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image: {{ .Values.images.tags.haproxy }}
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imagePullPolicy: {{ .Values.images.pull_policy }}
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{{ tuple . .Values.pod.resources.haproxy_pod | include "helm-toolkit.snippets.kubernetes_resources" | indent 6 }}
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hostNetwork: true
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env:
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- name: HAPROXY_CONF
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value: {{ .Values.conf.haproxy.container_config_dir }}/haproxy.cfg
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- name: LIVE_HAPROXY_CONF
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value: /tmp/live_haproxy.cfg
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- name: STAGE_HAPROXY_CONF
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value: /tmp/stage_haproxy.cfg
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command:
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- /bin/sh
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- -c
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- |
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set -eux
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test_conf () {
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if [ ! -s "$HAPROXY_CONF" ]; then
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echo "New proposed config not found at $HAPROXY_CONF"
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return 1
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fi
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# this is a safety gate to avoid a race of the anchor
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# changing a possible new config between the validation
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# and installation
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echo "Staging proposed config for installation."
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cp "$HAPROXY_CONF" "$STAGE_HAPROXY_CONF"
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if ! haproxy -c -f "$STAGE_HAPROXY_CONF"; then
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echo "Proposed config not valid."
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return 1
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fi
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return 0
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}
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while ! test_conf; do
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sleep 1
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done
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echo vvv Starting with initial config vvv
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cat "$STAGE_HAPROXY_CONF"
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echo
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mv "$STAGE_HAPROXY_CONF" "$LIVE_HAPROXY_CONF"
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chmod 700 "$LIVE_HAPROXY_CONF"
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# NOTE(mark-burnett): sleep for clearer log output
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sleep 1
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haproxy -D -f "$LIVE_HAPROXY_CONF" -p /tmp/haproxy.pid
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echo HAProxy started, monitoring for config changes..
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set +x
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while true; do
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if ! cmp -s "$HAPROXY_CONF" "$LIVE_HAPROXY_CONF"; then
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if ! test_conf; then
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echo New config file appears invalid, refusing to replace.
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else
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echo vvv Replacing old config vvv
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cat "$LIVE_HAPROXY_CONF"
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echo
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echo vvv With new config vvv
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cat "$STAGE_HAPROXY_CONF"
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echo
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cp "$STAGE_HAPROXY_CONF" "$LIVE_HAPROXY_CONF"
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# NOTE(mark-burnett): sleep for clearer log output
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sleep 1
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set -x
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haproxy -D -f "$LIVE_HAPROXY_CONF" -p /tmp/haproxy.pid \
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-x /tmp/haproxy.sock \
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-sf $(cat /tmp/haproxy.pid)
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set +x
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fi
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fi
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sleep {{ .Values.conf.haproxy.period }}
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done
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volumeMounts:
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- name: etc
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mountPath: {{ .Values.conf.haproxy.container_config_dir }}
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readOnly: True
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volumes:
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- name: etc
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hostPath:
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path: {{ .Values.conf.haproxy.host_config_dir }}
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{{ dict "envAll" $envAll "application" "haproxy" | include "helm-toolkit.snippets.kubernetes_pod_security_context" | indent 2 }}
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