From 9c845e4df30351978719caa97131cead77d71d76 Mon Sep 17 00:00:00 2001
From: Jay Stapleton <jay@tailscale.com>
Date: Tue, 27 Feb 2024 14:04:47 -0500
Subject: [PATCH] Upload script to remove old nodes

Signed-off-by: Jay Stapleton <jay@tailscale.com>
---
 delete-old-nodes/README.md           |  6 ++++++
 delete-old-nodes/delete-old-nodes.sh | 16 ++++++++++++++++
 2 files changed, 22 insertions(+)
 create mode 100644 delete-old-nodes/README.md
 create mode 100644 delete-old-nodes/delete-old-nodes.sh

diff --git a/delete-old-nodes/README.md b/delete-old-nodes/README.md
new file mode 100644
index 0000000..ad9c9d8
--- /dev/null
+++ b/delete-old-nodes/README.md
@@ -0,0 +1,6 @@
+#Delete Old Nodes  
+This will clean out nodes which have not been seen longer than the value of `$oldenough` - I've set this to one month.
+
+I keep my api key in ~/keys/tailnetname.api.key - if you have them elsewhere, you should change the `$apikey` value.
+
+And set `$tailnet` to the domain of your tailnet. 
\ No newline at end of file
diff --git a/delete-old-nodes/delete-old-nodes.sh b/delete-old-nodes/delete-old-nodes.sh
new file mode 100644
index 0000000..1bb27be
--- /dev/null
+++ b/delete-old-nodes/delete-old-nodes.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+
+tailnet="tailnetname.com"
+apikey=$(<$HOME/keys/${tailnet}.api.key)
+oldenough=$(date -I --date="1 month ago")
+
+curl -s "https://api.tailscale.com/api/v2/tailnet/$tailnet/devices" -u "$apikey:" |jq -r '.devices[] |  "\(.lastSeen) \(.id)"' |
+  while read seen id; do
+		if [[ $seen < $oldenough ]]
+		then
+			echo $id " was last seen " $seen " getting rid of it"
+			curl -s -X DELETE "https://api.tailscale.com/api/v2/device/$id" -u "$apikey:"
+		else
+			echo $id " was last seen " $seen " keeping it"
+		fi
+	done
\ No newline at end of file