[CI] Add bootnode checking CI jobs (#6889)

* Add check_bootnode script and github action

* fix mktemp for linux machines

* Update check_bootnodes.sh

show logs to see what's going wrong

* fix ephemeral ports and fetch polkadot

* fix check-bootnodes.yml

* increase node spawn holdoff

* disable fail-fast

* refactor, separate out check_bootnodes and make it posix-compliant

* add new job for detecting new bootnodes

* fix check-bootnodes.yml

* only check all bootnodes on release

* Add test bad bootnode

REVERT ME before merging PR. Should cause the test to fail, then
when we remove it, we should succeed. Sadly doesn't account for a
new successful bootnode, should ask if we have one we can use for
testing.

* fix paths

* fix paths and git... hopefully

* this better work...

* fix

* test

* last test

* Revert "Add test bad bootnode"

This reverts commit 540dd9754a1f8e2d3fef33f7f5a033b8c2aa4dcb.

* Update check_bootnodes.sh

* optimisations

Begin polling the RPC node right after spawning, allowing us to break
early on detecting peers

* increase holdoff to 5 seconds

* dont delete chainspec til we kill the node

* Update check-bootnodes.yml

* Remove checking bootnodes on pushing of this branch

---------

Co-authored-by: parity-processbot <>

polkadot/.github/workflows/check-bootnodes.yml

@@ -0,0 +1,31 @@
+# checks all networks we care about (kusama, polkadot, westend) and ensures
+# the bootnodes in their respective chainspecs are contactable
+
+name: Check all bootnodes
+on:
+  push:
+    branches:
+      # Catches v1.2.3 and v1.2.3-rc1
+      - release-v[0-9]+.[0-9]+.[0-9]+*
+
+jobs:
+  check_bootnodes:
+    strategy:
+      fail-fast: false
+      matrix:
+        runtime: [westend, kusama, polkadot]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+      - name: Install polkadot
+        shell: bash
+        run: |
+          curl -L "$(curl -s https://api.github.com/repos/paritytech/polkadot/releases/latest \
+          | jq -r '.assets | .[] | select(.name == "polkadot").browser_download_url')" \
+          | sudo tee /usr/local/bin/polkadot > /dev/null
+          sudo chmod +x /usr/local/bin/polkadot
+          polkadot --version
+      - name: Check ${{ matrix.runtime }} bootnodes
+        shell: bash
+        run: scripts/ci/github/check_bootnodes.sh node/service/chain-specs/${{ matrix.runtime }}.json

polkadot/.github/workflows/check-new-bootnodes.yml

@@ -0,0 +1,28 @@
+# If a chainspec file is updated with new bootnodes, we check to make sure those bootnodes are contactable
+
+name: Check new bootnodes
+on:
+  pull_request:
+    paths:
+      - 'node/service/chain-specs/*.json'
+
+jobs:
+  check_bootnodes:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Install polkadot
+        shell: bash
+        run: |
+          curl -L "$(curl -s https://api.github.com/repos/paritytech/polkadot/releases/latest \
+          | jq -r '.assets | .[] | select(.name == "polkadot").browser_download_url')" \
+          | sudo tee /usr/local/bin/polkadot > /dev/null
+          sudo chmod +x /usr/local/bin/polkadot
+          polkadot --version
+      - name: Check new bootnodes
+        shell: bash
+        run: |
+          scripts/ci/github/check_new_bootnodes.sh