From d5e45a4c5aca7b372337ee98aa8d5e3cea1ec460 Mon Sep 17 00:00:00 2001
From: Vivian Rook <vrook@wikimedia.org>
Date: Fri, 12 Apr 2024 12:22:26 -0400
Subject: [PATCH] Remove prometheus migrate logic

Bug: T362102
---
 ansible/files/prometheus-data.sh | 15 ---------------
 ansible/paws.yaml                |  5 -----
 deploy.sh                        |  4 ----
 3 files changed, 24 deletions(-)
 delete mode 100644 ansible/files/prometheus-data.sh

diff --git a/ansible/files/prometheus-data.sh b/ansible/files/prometheus-data.sh
deleted file mode 100644
index c2152582..00000000
--- a/ansible/files/prometheus-data.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-
-export KUBECONFIG=/tmp/kube.config.previous
-PREVIOUS_POD=$(kubectl get pods -n metrics --selector=app.kubernetes.io/component=server --no-headers -o custom-columns=":metadata.name")
-kubectl -n metrics exec -it pod/${PREVIOUS_POD} -c prometheus-server -- tar cfz backup.tar.gz /data
-kubectl cp metrics/${PREVIOUS_POD}:backup.tar.gz /tmp/prometheus.tar.gz -c prometheus-server
-
-sleep 150 # make a little gap of time to keep data from overlapping
-
-export KUBECONFIG=/tmp/kube.config.current
-CURRENT_POD=$(kubectl get pods -n metrics --selector=app.kubernetes.io/component=server --no-headers -o custom-columns=":metadata.name")
-kubectl -n metrics wait --for=condition=ready pod -l app.kubernetes.io/component=server --timeout=600s
-kubectl cp /tmp/prometheus.tar.gz metrics/${CURRENT_POD}:backup.tar.gz -c prometheus-server
-kubectl -n metrics exec -it pod/${CURRENT_POD} -c prometheus-server -- sh -c 'rm -rf /data/* ; tar xfz backup.tar.gz -C /'
-kubectl -n metrics rollout restart deployment.apps/prometheus-server
diff --git a/ansible/paws.yaml b/ansible/paws.yaml
index 1c3f1368..ceb7b634 100644
--- a/ansible/paws.yaml
+++ b/ansible/paws.yaml
@@ -75,7 +75,6 @@
         name: metrics
         kind: Namespace
         state: present
-      register: prometheus
 
     - name: Prometheus
       kubernetes.core.helm:
@@ -95,10 +94,6 @@
         template: "templates/prometheus-ingress.yaml.j2"
         namespace: metrics
 
-    - name: Pull in previous prometheus data
-      ansible.builtin.script: files/prometheus-data.sh
-      when: prometheus.changed
-
     - name: Add jupyterhub chart repo
       kubernetes.core.helm_repository:
         name: jupyterhub
diff --git a/deploy.sh b/deploy.sh
index f5ebb42f..d6ea1c72 100644
--- a/deploy.sh
+++ b/deploy.sh
@@ -42,9 +42,6 @@ fi
 
 source secrets-${datacenter}.sh
 
-# save current kube.config in case we need to transfer prometheus data
-cp $(pwd)/tofu/kube.config /tmp/kube.config.previous || true # if it isn't there just keep going
-
 python3 -m venv .venv/deploy
 source .venv/deploy/bin/activate
 pip install ansible==8.1.0 kubernetes==26.1.0
@@ -54,7 +51,6 @@ cd tofu
 AWS_ACCESS_KEY_ID=${ACCESS_KEY} AWS_SECRET_ACCESS_KEY=${SECRET_KEY} tofu init -backend-config=${datacenter}-backend.conf
 AWS_ACCESS_KEY_ID=${ACCESS_KEY} AWS_SECRET_ACCESS_KEY=${SECRET_KEY} tofu apply -var datacenter=${datacenter}
 export KUBECONFIG=$(pwd)/kube.config
-cp $(pwd)/kube.config /tmp/kube.config.current
 
 if [ "${tofuonly}" = '1' ]
 then