1#!/usr/bin/env bash
2
3# Copyright 2016 The Kubernetes Authors.
4#
5# Licensed under the Apache License, Version 2.0 (the "License");
6# you may not use this file except in compliance with the License.
7# You may obtain a copy of the License at
8#
9# http://www.apache.org/licenses/LICENSE-2.0
10#
11# Unless required by applicable law or agreed to in writing, software
12# distributed under the License is distributed on an "AS IS" BASIS,
13# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14# See the License for the specific language governing permissions and
15# limitations under the License.
16
17# Script used to configure node e2e test hosts from gce base images.
18# DISCLAIMER: This script is not actively tested or maintained. No guarantees that this will work
19# on any host environment. Contributions encouraged! Send PRs to pwittrock (github.com).
20#
21# At some point has successfully configured the following distros:
22# - ubuntu trusty
23# - containervm (no-op)
24# - rhel 7
25# - centos 7
26# - debian jessie
27
28# On a systemd environment, enable cpu and memory accounting for all processes by default.
29if [ -d /etc/systemd ]; then
30 cat <<EOF >kubernetes-accounting.conf
31[Manager]
32DefaultCPUAccounting=yes
33DefaultMemoryAccounting=yes
34EOF
35 sudo mkdir -p /etc/systemd/system.conf.d/
36 sudo cp kubernetes-accounting.conf /etc/systemd/system.conf.d
37 sudo systemctl daemon-reload
38fi
39
40# For coreos, disable updates
41if sudo systemctl status update-engine &>/dev/null; then
42 sudo systemctl mask update-engine locksmithd
43fi
44
45# Fixup sudoers require tty
46if ! sudo grep -q "# Defaults requiretty" /etc/sudoers; then
47 sudo sed -i 's/Defaults requiretty/# Defaults requiretty/' /etc/sudoers
48fi
49
50# Install nsenter for ubuntu images
51if cat /etc/*-release | grep "ID=ubuntu"; then
52 if ! which nsenter > /dev/null; then
53 echo "Do not find nsenter. Install it."
54 NSENTER_BUILD_DIR=$(mktemp -d /tmp/nsenter-build-XXXXXX)
55 cd "$NSENTER_BUILD_DIR" || exit 1
56 curl https://www.kernel.org/pub/linux/utils/util-linux/v2.31/util-linux-2.31.tar.gz | tar -zxf-
57 sudo apt-get update
58 sudo apt-get --yes install make
59 sudo apt-get --yes install gcc
60 cd util-linux-2.31 || exit 1
61 ./configure --without-ncurses
62 make nsenter
63 sudo cp nsenter /usr/local/bin
64 rm -rf "$NSENTER_BUILD_DIR"
65 fi
66fi
67
68# Install docker
69if ! hash containerd 2>/dev/null; then
70 echo "Please install containerd, see the getting started guide here: https://github.com/containerd/containerd/blob/main/docs/getting-started.md"
71 echo "For a docker CLI replacement, we suggest nerdctl: https://github.com/containerd/nerdctl#install"
72fi
73
74# Allow jenkins access to docker
75id jenkins || sudo useradd jenkins -m
76sudo usermod -a -G docker jenkins
77
78# install lxc
79if ! cat /etc/*-release | grep "ID=debian"; then
80 hash apt-get 2>/dev/null
81 if [ $? -ne 1 ]; then
82 sudo apt-get install lxc -y
83 lxc-checkconfig
84 sudo sed -i 's/GRUB_CMDLINE_LINUX="\(.*\)"/GRUB_CMDLINE_LINUX="\1 cgroup_enable=memory"/' /etc/default/grub
85 sudo update-grub
86 fi
87fi
88
89# delete init kubelet from containervm so that is doesn't startup
90if [ -f /etc/init.d/kubelet ]; then
91 sudo rm /etc/init.d/kubelet
92fi
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