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add pod dependency management via Kyverno init container injection

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Kyverno ClusterPolicy reads dependency.kyverno.io/wait-for annotation
and injects busybox init containers that block until each dependency
is reachable (nc -z). Annotations added to 18 stacks (24 deployments).

Includes graceful-db-maintenance.sh script for planned DB maintenance
(scales dependents to 0, saves replica counts, restores on startup).
This commit is contained in:
Viktor Barzin 2026-03-15 19:17:44 +00:00
parent dc274ab413
commit 0f262ceda3
22 changed files with 282 additions and 4 deletions
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6
stacks/rybbit/main.tf
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@ -252,6 +252,9 @@ resource "kubernetes_deployment" "rybbit" {
labels = {
app = "rybbit"
}
annotations = {
"dependency.kyverno.io/wait-for" = "postgresql.dbaas:5432,clickhouse.rybbit:8123"
}
}
spec {
container {
@ -404,6 +407,9 @@ resource "kubernetes_deployment" "rybbit-client" {
labels = {
app = "rybbit-client"
}
annotations = {
"dependency.kyverno.io/wait-for" = "rybbit.rybbit:3001"
}
}
spec {
container {