113 lines
4.2 KiB
Diff
113 lines
4.2 KiB
Diff
From 1c73f6739eb672b330669fda5e427099c08c3490 Mon Sep 17 00:00:00 2001
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From: Thiago Brito <thiago.brito@windriver.com>
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Date: Thu, 22 Apr 2021 20:00:51 -0300
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Subject: [PATCH 4/8] Add Helm v2 client initialization
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This adds helm v2 client initialization using the tiller
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container postStart exec to access helm v2 binary.
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This will perform 'helm init', removes the default repos
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'stable' and 'local', and add valid repos that were provided
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as overrides. Note that helm will only add repos that exist.
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This expects overrides in this format:
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conf:
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tiller:
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charts_url: 'http://192.168.204.1:8080/helm_charts'
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repo_names:
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- 'starlingx'
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- 'stx-platform'
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repos:
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stable: https://kubernetes-charts.storage.googleapis.com
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This gives the following result:
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helmv2-cli -- helm repo list
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NAME URL
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stable https://kubernetes-charts.storage.googleapis.com
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starlingx http://192.168.204.1:8080/helm_charts/starlingx
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stx-platform http://192.168.204.1:8080/helm_charts/stx-platform
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Signed-off-by: Jim Gauld <james.gauld@windriver.com>
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Signed-off-by: Thiago Brito <thiago.brito@windriver.com>
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---
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charts/armada/templates/deployment-api.yaml | 33 +++++++++++++++++++++
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charts/armada/values.yaml | 10 +++++++
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2 files changed, 43 insertions(+)
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diff --git a/charts/armada/templates/deployment-api.yaml b/charts/armada/templates/deployment-api.yaml
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index 562e3d0..69036c0 100644
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--- a/charts/armada/templates/deployment-api.yaml
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+++ b/charts/armada/templates/deployment-api.yaml
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@@ -186,6 +186,39 @@ spec:
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- -trace
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{{- end }}
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lifecycle:
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+ postStart:
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+ exec:
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+ command:
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+ - sh
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+ - "-c"
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+ - |
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+ /bin/sh <<'EOF'
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+ # Delay initialization since postStart handler runs asynchronously and there
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+ # is no guarantee it is called before the Container’s entrypoint.
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+ sleep 5
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+ # Initialize Helm v2 client.
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+ export HELM_HOST=:{{ .Values.conf.tiller.port }}
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+ /helm init --client-only --skip-refresh
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+
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+ # Moving the ln up so eventual errors on the next commands doesn't prevent
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+ # having helm available
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+ ln -s -f /helm /tmp/helm
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+
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+ # Removes all repos available so we don't get an error removing what
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+ # doesn't exist anymore or error re-adding an existing repo
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+ /helm repo list | awk '(NR>1){print $1}' | xargs --no-run-if-empty /helm repo rm
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+{{- if .Values.conf.tiller.repos }}
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+ {{- range $name, $repo := .Values.conf.tiller.repos }}
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+ /helm repo add {{ $name }} {{ $repo }}
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+ {{- end }}
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+{{- end }}
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+{{- if .Values.conf.tiller.repo_names }}
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+ {{- range .Values.conf.tiller.repo_names }}
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+ /helm repo add {{ . }} {{ $envAll.Values.conf.tiller.charts_url }}/{{ . }}
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+ {{- end }}
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+{{- end }}
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+ exit 0
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+ EOF
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preStop:
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exec:
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command:
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diff --git a/charts/armada/values.yaml b/charts/armada/values.yaml
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index 3a4427e..da45810 100644
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--- a/charts/armada/values.yaml
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+++ b/charts/armada/values.yaml
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@@ -220,6 +220,10 @@ conf:
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# Note: Defaulting to the (default) kubernetes grace period, as anything
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# greater than that will have no effect.
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prestop_sleep: 30
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+ # Helm v2 initialization
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+ charts_url: null
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+ repo_names: []
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+ repos: {}
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monitoring:
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prometheus:
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@@ -325,7 +329,13 @@ pod:
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volumes:
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- name: kubernetes-client-cache
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emptyDir: {}
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+ - name: tiller-tmp
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+ emptyDir: {}
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volumeMounts:
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+ - name: tiller-tmp
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+ # /tmp is now readOnly due to the security_context on L288, so
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+ # mounting an emptyDir
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+ mountPath: /tmp
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- name: kubernetes-client-cache
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# Should be the `$HOME/.kube` of the `runAsUser` above
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# as this is where tiller's kubernetes client roots its cache dir.
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--
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2.34.1
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