From b66f1bcadde18c5702929dff8f53b78265596fb2 Mon Sep 17 00:00:00 2001
From: John McCardle <mccardle.john@gmail.com>
Date: Tue, 8 Feb 2022 20:55:33 -0500
Subject: [PATCH] Day zero scripts to create and delete a VM with a single
 execution.

---
 day0_create.sh | 36 ++++++++++++++++++++++++++++++++++++
 day0_delete.sh | 27 +++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100755 day0_create.sh
 create mode 100755 day0_delete.sh

diff --git a/day0_create.sh b/day0_create.sh
new file mode 100755
index 0000000..f5083ea
--- /dev/null
+++ b/day0_create.sh
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+#
+#   Day 0 - Create script
+#   Requires linode-cli to be installed (`pip3 install linode-cli`)
+#
+
+# require ROOT_PASS
+if [ -z "$ROOT_PASS" ]
+then
+    echo "Define a root password for this linode, example: ROOT_PASS=password1234 $0"
+    exit 1
+fi
+
+# default to current user's SSH key as authorized key
+if [ -z "$AUTHORIZED_KEYS" ]
+then
+    AUTHORIZED_KEYS=$(cat ~/.ssh/id_rsa.pub)
+fi
+
+JSON=$(linode-cli linodes create --root_pass "$ROOT_PASS" \
+    --authorized_keys "$AUTHORIZED_KEYS" \
+    --label "UpskillChallengeNode" \
+    --json)
+
+# Example output:
+#[{"id": 34627775, "label": "linode34627775", "group": "", "status": "provisioning", "created": "2022-02-09T01:02:39", "updated": "2022-02-09T01:02:39", "type": "g6-nanode-1", "ipv4": ["170.187.158.244"], "ipv6": "2600:3c02::f03c:93ff:fe98:b296/128", "image": "linode/debian11", "region": "us-southeast", "specs": {"disk": 25600, "memory": 1024, "vcpus": 1, "transfer": 1000}, "alerts": {"cpu": 90, "network_in": 10, "network_out": 10, "transfer_quota": 80, "io": 10000}, "backups": {"enabled": false, "schedule": {"day": null, "window": null}, "last_successful": null}, "hypervisor": "kvm", "watchdog_enabled": true, "tags": []}]
+
+# Ugly one-line of Python to parse the JSON from linode-cli. Folly?
+python -c "import json; j=json.loads('$JSON')[0]; print(f'''IP Address: {j['ipv4']}\nStatus: {j['status']}\nCreated: {j['created']}\n''')"
+
+# Sleep to wait for provisioning - this isn't long enough and it isn't a good practice.
+# sleep 5.0
+
+# show pretty table of info to prove changes
+linode-cli linodes list --format 'label,status,ipv4'
diff --git a/day0_delete.sh b/day0_delete.sh
new file mode 100755
index 0000000..6e77eaf
--- /dev/null
+++ b/day0_delete.sh
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+#
+#   Day 0 - Delete script
+#   Requires linode-cli to be installed (`pip3 install linode-cli`)
+#
+
+
+# The command used below looks like this from command line:
+#linode-cli linodes list --format 'id' --label UpskillChallengeNode --text
+#id
+#34628226
+
+
+# change the target of this delete script by giving a LABEL value, like this:
+# LABEL=DeleteThisNode ./day0_delete.sh
+# otherwise, the default "UpskillChallengeNode" will be deleted
+if [ -z "$LABEL"]
+then
+    LABEL="UpskillChallengeNode"
+fi
+
+ID=$(linode-cli linodes list --format 'id' --label "$LABEL" --text | tail -n 1)
+echo $ID
+
+linode-cli linodes delete "$ID"
+