From 2d78ed73c96bd38e6654bc7317995f750c55d607 Mon Sep 17 00:00:00 2001
From: Marcus Noble <github@marcusnoble.co.uk>
Date: Fri, 30 Aug 2024 13:42:25 +0100
Subject: [PATCH] Added gs-ssh

Signed-off-by: Marcus Noble <github@marcusnoble.co.uk>
---
 home/.bin/gs-ssh | 75 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100755 home/.bin/gs-ssh

diff --git a/home/.bin/gs-ssh b/home/.bin/gs-ssh
new file mode 100755
index 0000000..936c568
--- /dev/null
+++ b/home/.bin/gs-ssh
@@ -0,0 +1,75 @@
+#!/usr/bin/env bash
+
+source .utils
+
+DEBUG=""
+
+print_usage() {
+  orange "gs-ssh - ssh to Giant Swarm managed cluster node"
+  echo " "
+  underline "Usage:"
+  echo "gs-ssh [CLUSTER NAME] [NODE NAME]"
+  echo " "
+  underline "Examples:"
+  echo "> gs-ssh gauss"
+  echo "> gs-ssh gauss ip-1-2-3-4.ey-west-1.compute.internal"
+  echo " "
+  underline "Options:"
+  echo "-h, --help                show this help text"
+}
+
+POS_ARGS=()
+
+while test $# -gt 0; do
+  case "$1" in
+    -h|--help)
+      print_usage
+      exit 0
+      ;;
+    --debug)
+      DEBUG="--level=debug"
+      shift
+      ;;
+    /)
+      # We want to ignore slash seperators between MC and WC
+      shift
+      ;;
+    *)
+      POS_ARGS+=(`echo $1 | tr '/' ' '`)
+      shift
+      ;;
+  esac
+done
+
+if [ ${#POS_ARGS[@]} -eq 0 ]; then
+  POS_ARGS+=(`opsctl list installations --short | tr ' ' '\n' | fzf`)
+fi
+
+TELEPORT_CLUSTER_NAME="$(echo "${POS_ARGS[0]}" | tr ' ' '-')"
+TELEPORT_SUPPORTED=$(tsh kube ls -f json --query "name == \"${TELEPORT_CLUSTER_NAME}\"" 2>/dev/null | jq '. | length')
+
+if [ ${#POS_ARGS[@]} -eq 1 ]; then
+  if [[ "${TELEPORT_SUPPORTED}" == "0" ]]; then
+    orange "Node name must be specified if cluster doesn't support Teleport"
+    exit 1
+  else
+    POS_ARGS+=(`tsh ls -f names cluster=${POS_ARGS[0]} | fzf`)
+  fi
+fi
+
+kubectl config delete-context gs-${POS_ARGS[0]} &>/dev/null
+
+if [[ "${TELEPORT_SUPPORTED}" == "0" ]]; then
+  # Teleport not supported, old style login
+  echo "Cluster isn't know to Teleport, using old ssh method"
+  opsctl ssh ${DEBUG} ${POS_ARGS[@]}
+else
+  echo "SSHing with Teleport. Cluster: '${TELEPORT_CLUSTER_NAME}' Node: ${POS_ARGS[1]}"
+  # Make sure that caching is disabled to avoid issues with cross-cluster cache pollution
+  TELEPORT_CACHE_DIR="${HOME}/.kube/cache/discovery/teleport.giantswarm.io_443"
+  if [[ "$(readlink -f ${TELEPORT_CACHE_DIR})" != "/dev/null" ]]; then
+    rm -rf ${TELEPORT_CACHE_DIR}
+    ln -s /dev/null ${TELEPORT_CACHE_DIR}
+  fi
+  tsh ssh root@cluster=${POS_ARGS[0]},node=${POS_ARGS[1]}
+fi