klimbim/kubernetes/kubeconnect

#!/bin/bash

# Klimbim Software collection, A bag full of things
# Copyright (C) 2011-2023 Johannes 'Banana' Keßler
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <https://www.gnu.org/licenses/>.

# 2019 http://www.bananas-playground.net
# version 1.0

# get a shell in a pod
# kubeconect podname context
#
# podname = the string to find
# context = the context to use for kubectl
#
# uses the default container and /bin/bash as a shell
# needs kubectl to be installed

if [ $# -lt 2 ]; then
	echo "You need to provide pod name and context";
	echo "kubeconnect pod-name context";
	exit 2;
fi;

PODNAME="$1"
CONTEXT="$2"

if kubectl config use-context "$CONTEXT" &> /dev/null
then
	echo "Using context: "`kubectl config current-context`;
	AMOUNT=$(kubectl get pods | grep $PODNAME | awk '{print $1}' | wc -l);
	if [[ $AMOUNT -eq 1 ]];
	then
		REALPODNAME=$(kubectl get pods | grep $PODNAME | awk '{print $1}');
		echo "Pod found: "$REALPODNAME;
		kubectl exec -it $REALPODNAME -- /bin/bash
	else
		echo "ERROR: No such pod found. '$PODNAME'";
		exit 1;
	fi
else
	echo "Could not set context: '$CONTEXT'"
	exit 1;
fi
exit 0