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Added basic setup for master and certification material

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This commit is contained in:
Tim Unkrig
2022-04-27 16:02:08 +02:00
parent 5f1ddaa73d
commit 2feefe0fd0
66 changed files with 2364 additions and 6 deletions
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22
enable_display.yml Normal file
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- name: Install prerequisits
apt:
name: git
update_cache: true
- name: enable I2S Circuit
shell: raspi-config nonint do_i2c 0
- name: Get Github Repo
git:
repo: https://github.com/UCTRONICS/U6143_ssd1306.git
dest: /srv/U6143_ssd1306
- name: write to rc.local
blockinfile:
path: /etc/rc.local
insertbefore: exit 0
block: |
cd /srv/U6143_ssd1306/C
sudo make clean
sudo make
sudo ./display &

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etchostsupdate.yaml Normal file
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---
- name: "generate /etc/hosts.ansible file"
template: "src=templates/etchosts.j2 dest='/etc/hosts.ansible' owner=root group=root mode=0644"
tags: etc_hosts
become: true
- name: "check if debian generated hosts file has a backup"
stat: "path=/etc/hosts.debian"
tags: etc_hosts
register: etc_hosts_debian
- name: "backup debian generated /etc/hosts"
command: "cp /etc/hosts /etc/hosts.debian"
when: etc_hosts_debian.stat.islnk is not defined
tags: etc_hosts
become: true
- name: "install /etc/hosts.ansible file"
command: "cp /etc/hosts.ansible /etc/hosts"
tags: etc_hosts
become: true

280
files/LFS258/SOLUTIONS/LICENSE Normal file
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4
files/LFS258/SOLUTIONS/s_03/99-kubernetes-cri.conf Normal file
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net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1

183
files/LFS258/SOLUTIONS/s_03/containerd-setup.txt Normal file
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#
# This script is intended to be run on an Ubuntu 20.04,
# 2cpu, 8G node. The course is **not** tested using containerd,
# so you may have endless issues, or not. Only for those already
# comfortable with Kubernetes, who want to compare and contrast
# various container engines
# By Tim Serewicz, 03/2022 GPL
# Note there is a lot of software downloaded, which may require
# some troubleshooting if any of the sites updates their code,
# which should be expected.
# These first several steps can be done on cp and worker.
# Ensure two modules are loaded after reboot
cat <<EOF | sudo tee /etc/modules-load.d/containerd.conf
overlay
br_netfilter
EOF
# Disable swap if not on a cloud instance - done anyway
sudo swapoff -a
# Load the modules now
sudo modprobe overlay
sudo modprobe br_netfilter
# Update sysctl to load iptables and ipforwarding
cat <<EOF | sudo tee /etc/sysctl.d/99-kubernetes-cri.conf
net.bridge.bridge-nf-call-iptables = 1
net.ipv4.ip_forward = 1
net.bridge.bridge-nf-call-ip6tables = 1
EOF
sudo sysctl --system
# Install some necessary software
sudo apt-get update && sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common
# Install the Docker keyring
# In Ubuntu 20.04, containerd part of local repos.
sudo apt install containerd -y
#Older OS steps
#curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key --keyring /etc/apt/trusted.gpg.d/docker.gpg add -
# Create a Docker repository
#sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"
# Install and configure the containerd package
#sudo apt-get update && sudo apt-get install -y containerd.io
#sudo mkdir -p /etc/containerd
#sudo containerd config default | sudo tee /etc/containerd/config.toml
# Verify the file has the appropriate contents
#cat /etc/containerd/config.toml
# Restart and check containerd
sudo systemctl restart containerd
sudo systemctl status containerd
#
#
# RETURN TO THE BOOK now that containerd is installed.
# Some of same steps included following to make life easier, and some
# troubleshooting
#
#
# Add the Kubernetes repo
sudo sh -c "echo 'deb http://apt.kubernetes.io/ kubernetes-xenial main' >> /etc/apt/sources.list.d/kubernetes.list"
# Add the GPG key for the new repo
sudo sh -c "curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -"
# Install the Kubernetes packages - Using older version of k8s
# so we can upgrade to current in future lab. Stop after these steps
# if on the worker
sudo apt-get update
sudo apt-get install -y kubeadm=1.22.1-00 kubelet=1.22.1-00 kubectl=1.22.1-00
sudo apt-mark hold kubelet kubeadm kubectl
# Create a cluster using containerd - Using older version of k8s
# so we can upgrade to current in future lab. Only run init on
# the control plane (cp) - **not** the worker.
sudo kubeadm init --kubernetes-version 1.22.1 --cri-socket=/var/run/containerd/containerd.sock --pod-network-cidr 192.168.0.0/16 | tee $HOME/cp.out
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config
# We'll use Calico for the network plugin
kubectl apply -f https://docs.projectcalico.org/manifests/calico.yaml
# Make sure all the infrastructure pods are running
kubectl get pod --all-namespaces
kubectl describe pod -l component=kube-apiserver -n kube-system
kubectl get events
# Enable command line completion
source <(kubectl completion bash)
echo "source <(kubectl completion bash)" >> $HOME/.bashrc
# Untaint the control plane, as we only have one node
kubectl taint node --all node-role.kubernetes.io/master-
# Troubleshooting and or optional add ons
# Get containerd running, append or create several files.
cat <<EOF | sudo tee /etc/containerd/config.toml
disabled_plugins = ["restart"]
[plugins.linux]
shim_debug = true
[plugins.cri.containerd.runtimes.runsc]
runtime_type = "io.containerd.runsc.v1"
EOF
cat <<EOF | sudo tee /etc/crictl.yaml
runtime-endpoint: unix:///run/containerd/containerd.sock
image-endpoint: unix:///var/run/dockershim.sock
timeout: 10
debug: true
EOF
# Ensure containerd starts and
sudo systemctl restart containerd
kubectl get pod --all-namespaces
# Optional
# Install and configure crictl and gVisor if you want a more secure environment.
wget https://github.com/kubernetes-sigs/cri-tools/releases/download/v1.22.0/crictl-v1.22.0-linux-amd64.tar.gz
tar zxvf crictl-v1.22.0-linux-amd64.tar.gz
sudo mv crictl /usr/local/bin
cat <<EOF | sudo tee /etc/crictl.yaml
runtime-endpoint: unix:///run/containerd/containerd.sock
EOF
sudo wget https://storage.googleapis.com/gvisor/releases/nightly/latest/containerd-shim-runsc-v1 -O /usr/local/bin/containerd-shim-runsc-v1
sudo chmod +x /usr/local/bin/containerd-shim-runsc-v1
sudo wget https://storage.googleapis.com/gvisor/releases/nightly/latest/runsc -O /usr/local/bin/runsc
sudo chmod +x /usr/local/bin/runsc

278
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# The CRI-O configuration file specifies all of the available configuration
# options and command-line flags for the crio(8) OCI Kubernetes Container Runtime
# daemon, but in a TOML format that can be more easily modified and versioned.
#
# Please refer to crio.conf(5) for details of all configuration options.
# CRI-O reads its storage defaults from the containers-storage.conf(5) file
# located at /etc/containers/storage.conf. Modify this storage configuration if
# you want to change the system's defaults. If you want to modify storage just
# for CRI-O, you can change the storage configuration options here.
[crio]
# Path to the "root directory". CRI-O stores all of its data, including
# containers images, in this directory.
#root = "/home/lsm5/.local/share/containers/storage"
# Path to the "run directory". CRI-O stores all of its state in this directory.
#runroot = "/tmp/1000"
# Storage driver used to manage the storage of images and containers. Please
# refer to containers-storage.conf(5) to see all available storage drivers.
#storage_driver = "vfs"
# List to pass options to the storage driver. Please refer to
# containers-storage.conf(5) to see all available storage options.
#storage_option = [
#]
# If set to false, in-memory locking will be used instead of file-based locking.
file_locking = false
# Path to the lock file.
file_locking_path = "/run/crio.lock"
# The crio.api table contains settings for the kubelet/gRPC interface.
[crio.api]
# Path to AF_LOCAL socket on which CRI-O will listen.
listen = "/var/run/crio/crio.sock"
# IP address on which the stream server will listen.
stream_address = "127.0.0.1"
# The port on which the stream server will listen.
stream_port = "0"
# Enable encrypted TLS transport of the stream server.
stream_enable_tls = false
# Path to the x509 certificate file used to serve the encrypted stream. This
# file can change, and CRI-O will automatically pick up the changes within 5
# minutes.
stream_tls_cert = ""
# Path to the key file used to serve the encrypted stream. This file can
# change, and CRI-O will automatically pick up the changes within 5 minutes.
stream_tls_key = ""
# Path to the x509 CA(s) file used to verify and authenticate client
# communication with the encrypted stream. This file can change, and CRI-O will
# automatically pick up the changes within 5 minutes.
stream_tls_ca = ""
# Maximum grpc send message size in bytes. If not set or <=0, then CRI-O will default to 16 * 1024 * 1024.
grpc_max_send_msg_size = 16777216
# Maximum grpc receive message size. If not set or <= 0, then CRI-O will default to 16 * 1024 * 1024.
grpc_max_recv_msg_size = 16777216
# The crio.runtime table contains settings pertaining to the OCI runtime used
# and options for how to set up and manage the OCI runtime.
[crio.runtime]
# A list of ulimits to be set in containers by default, specified as
# "<ulimit name>=<soft limit>:<hard limit>", for example:
# "nofile=1024:2048"
# If nothing is set here, settings will be inherited from the CRI-O daemon
#default_ulimits = [
#]
# default_runtime is the _name_ of the OCI runtime to be used as the default.
# The name is matched against the runtimes map below.
default_runtime = "runc"
# If true, the runtime will not use pivot_root, but instead use MS_MOVE.
no_pivot = false
# Path to the conmon binary, used for monitoring the OCI runtime.
conmon = "/usr/bin/conmon"
# Environment variable list for the conmon process, used for passing necessary
# environment variables to conmon or the runtime.
conmon_env = [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
]
# If true, SELinux will be used for pod separation on the host.
selinux = false
# Path to the seccomp.json profile which is used as the default seccomp profile
# for the runtime.
seccomp_profile = "/usr/share/containers/seccomp.json"
# Used to change the name of the default AppArmor profile of CRI-O. The default
# profile name is "crio-default-" followed by the version string of CRI-O.
apparmor_profile = "crio-default"
# Cgroup management implementation used for the runtime.
cgroup_manager = "systemd"
# List of default capabilities for containers. If it is empty or commented out,
# only the capabilities defined in the containers json file by the user/kube
# will be added.
default_capabilities = [
"CHOWN",
"DAC_OVERRIDE",
"FSETID",
"FOWNER",
"NET_RAW",
"SETGID",
"SETUID",
"SETPCAP",
"NET_BIND_SERVICE",
"SYS_CHROOT",
"KILL",
]
# List of default sysctls. If it is empty or commented out, only the sysctls
# defined in the container json file by the user/kube will be added.
default_sysctls = [
]
# List of additional devices. specified as
# "<device-on-host>:<device-on-container>:<permissions>", for example: "--device=/dev/sdc:/dev/xvdc:rwm".
#If it is empty or commented out, only the devices
# defined in the container json file by the user/kube will be added.
additional_devices = [
]
# Path to OCI hooks directories for automatically executed hooks.
hooks_dir = [
]
# List of default mounts for each container. **Deprecated:** this option will
# be removed in future versions in favor of default_mounts_file.
default_mounts = [
]
# Path to the file specifying the defaults mounts for each container. The
# format of the config is /SRC:/DST, one mount per line. Notice that CRI-O reads
# its default mounts from the following two files:
#
# 1) /etc/containers/mounts.conf (i.e., default_mounts_file): This is the
# override file, where users can either add in their own default mounts, or
# override the default mounts shipped with the package.
#
# 2) /usr/share/containers/mounts.conf: This is the default file read for
# mounts. If you want CRI-O to read from a different, specific mounts file,
# you can change the default_mounts_file. Note, if this is done, CRI-O will
# only add mounts it finds in this file.
#
#default_mounts_file = ""
# Maximum number of processes allowed in a container.
pids_limit = 1024
# Maximum sized allowed for the container log file. Negative numbers indicate
# that no size limit is imposed. If it is positive, it must be >= 8192 to
# match/exceed conmon's read buffer. The file is truncated and re-opened so the
# limit is never exceeded.
log_size_max = -1
# Whether container output should be logged to journald in addition to the kuberentes log file
log_to_journald = false
# Path to directory in which container exit files are written to by conmon.
container_exits_dir = "/var/run/crio/exits"
# Path to directory for container attach sockets.
container_attach_socket_dir = "/var/run/crio"
# If set to true, all containers will run in read-only mode.
read_only = false
# Changes the verbosity of the logs based on the level it is set to. Options
# are fatal, panic, error, warn, info, and debug.
log_level = "error"
# The UID mappings for the user namespace of each container. A range is
# specified in the form containerUID:HostUID:Size. Multiple ranges must be
# separated by comma.
uid_mappings = ""
# The GID mappings for the user namespace of each container. A range is
# specified in the form containerGID:HostGID:Size. Multiple ranges must be
# separated by comma.
gid_mappings = ""
# The minimal amount of time in seconds to wait before issuing a timeout
# regarding the proper termination of the container.
ctr_stop_timeout = 0
# The "crio.runtime.runtimes" table defines a list of OCI compatible runtimes.
# The runtime to use is picked based on the runtime_handler provided by the CRI.
# If no runtime_handler is provided, the runtime will be picked based on the level
# of trust of the workload.
[crio.runtime.runtimes.runc]
runtime_path = "/usr/lib/cri-o-runc/sbin/runc"
runtime_type = ""
# The crio.image table contains settings pertaining to the management of OCI images.
#
# CRI-O reads its configured registries defaults from the system wide
# containers-registries.conf(5) located in /etc/containers/registries.conf. If
# you want to modify just CRI-O, you can change the registries configuration in
# this file. Otherwise, leave insecure_registries and registries commented out to
# use the system's defaults from /etc/containers/registries.conf.
[crio.image]
# Default transport for pulling images from a remote container storage.
default_transport = "docker://"
# The path to a file containing credentials necessary for pulling images from
# secure registries. The file is similar to that of /var/lib/kubelet/config.json
global_auth_file = ""
# The image used to instantiate infra containers.
pause_image = "k8s.gcr.io/pause:3.1"
# The path to a file containing credentials specific for pulling the pause_image from
# above. The file is similar to that of /var/lib/kubelet/config.json
pause_image_auth_file = ""
# The command to run to have a container stay in the paused state.
pause_command = "/pause"
# Path to the file which decides what sort of policy we use when deciding
# whether or not to trust an image that we've pulled. It is not recommended that
# this option be used, as the default behavior of using the system-wide default
# policy (i.e., /etc/containers/policy.json) is most often preferred. Please
# refer to containers-policy.json(5) for more details.
signature_policy = ""
# Controls how image volumes are handled. The valid values are mkdir, bind and
# ignore; the latter will ignore volumes entirely.
image_volumes = "mkdir"
# List of registries to be used when pulling an unqualified image (e.g.,
# "alpine:latest"). By default, registries is set to "docker.io" for
# compatibility reasons. Depending on your workload and usecase you may add more
# registries (e.g., "quay.io", "registry.fedoraproject.org",
# "registry.opensuse.org", etc.).
#registries = [
# "quay.io",
# "docker.io",
#]
registries = [
"docker.io",
"quay.io",
"registry.fedoraproject.org",
]
# The crio.network table containers settings pertaining to the management of
# CNI plugins.
[crio.network]
# Path to the directory where CNI configuration files are located.
network_dir = "/etc/cni/net.d/"
# Paths to directories where CNI plugin binaries are located.
plugin_dirs = [
"/opt/cni/bin",
]

9
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{
"exec-opts": ["native.cgroupdriver=systemd"],
"log-driver": "json-file",
"log-opts": {
"max-size": "100m"
},
"storage-driver": "overlay2"
}

43
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# Already edited file to remove unique values
# Port information not yet added.
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "1"
generation: 1
labels:
run: nginx
name: nginx
namespace: default
spec:
replicas: 1
selector:
matchLabels:
run: nginx
strategy:
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
run: nginx
spec:
containers:
- image: nginx
imagePullPolicy: Always
name: nginx
ports:
- containerPort: 80
protocol: TCP
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30

6
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apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
kubernetesVersion: 1.22.1
controlPlaneEndpoint: "k8s-master:6443"
networking:
podSubnet: 10.20.0.0/16

37
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apiVersion: kubeadm.k8s.io/v1beta3
bootstrapTokens:
- groups:
- system:bootstrappers:kubeadm:default-node-token
token: abcdef.0123456789abcdef
ttl: 24h0m0s
usages:
- signing
- authentication
kind: InitConfiguration
localAPIEndpoint:
advertiseAddress: 1.2.3.4
bindPort: 6443
nodeRegistration:
criSocket: /var/run/dockershim.sock
imagePullPolicy: IfNotPresent
name: node
taints: null
---
apiServer:
timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta3
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns: {}
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: 1.22.0
networking:
dnsDomain: cluster.local
serviceSubnet: 10.96.0.0/12
scheduler: {}

77
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apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
- system:bootstrappers:kubeadm:default-node-token
token: abcdef.0123456789abcdef
ttl: 24h0m0s
usages:
- signing
- authentication
kind: InitConfiguration
localAPIEndpoint:
bindPort: 6443
nodeRegistration:
criSocket: unix:///var/run/crio/crio.sock
name: k8scp
taints: null
---
apiServer:
timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: 1.22.1
networking:
dnsDomain: cluster.local
serviceSubnet: 10.96.0.0/12
podSubnet: 192.168.0.0/16
scheduler: {}
---
apiVersion: kubelet.config.k8s.io/v1beta1
authentication:
anonymous:
enabled: false
webhook:
cacheTTL: 0s
enabled: true
x509:
clientCAFile: /etc/kubernetes/pki/ca.crt
authorization:
mode: Webhook
webhook:
cacheAuthorizedTTL: 0s
cacheUnauthorizedTTL: 0s
cgroupDriver: systemd
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
cpuManagerReconcilePeriod: 0s
evictionPressureTransitionPeriod: 0s
fileCheckFrequency: 0s
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 0s
imageMinimumGCAge: 0s
kind: KubeletConfiguration
logging: {}
nodeStatusReportFrequency: 0s
nodeStatusUpdateFrequency: 0s
resolvConf: /run/systemd/resolve/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 0s
shutdownGracePeriod: 0s
shutdownGracePeriodCriticalPods: 0s
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 0s
syncFrequency: 0s
volumeStatsAggPeriod: 0s

13
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apiVersion: v1
kind: LimitRange
metadata:
name: low-resource-range
spec:
limits:
- default:
cpu: 1
memory: 500Mi
defaultRequest:
cpu: 0.5
memory: 100Mi
type: Container

67
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apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "2"
kubectl.kubernetes.io/last-applied-configuration: |
{"apiVersion":"apps/v1","kind":"Deployment","metadata":{"annotations":{"deployment.kubernetes.io/revision":"1"},"generation":1,"labels":{"run":"nginx"},"name":"nginx","namespace":"default"},"spec":{"replicas":1,"selector":{"matchLabels":{"run":"nginx"}},"strategy":{"rollingUpdate":{"maxSurge":1,"maxUnavailable":1},"type":"RollingUpdate"},"template":{"metadata":{"creationTimestamp":null,"labels":{"run":"nginx"}},"spec":{"containers":[{"image":"nginx","imagePullPolicy":"Always","name":"nginx","ports":[{"containerPort":80,"protocol":"TCP"}],"resources":{},"terminationMessagePath":"/dev/termination-log","terminationMessagePolicy":"File"}],"dnsPolicy":"ClusterFirst","restartPolicy":"Always","schedulerName":"default-scheduler","securityContext":{},"terminationGracePeriodSeconds":30}}}}
creationTimestamp: 2017-10-25T16:09:08Z
generation: 2
labels:
run: nginx
name: nginx
namespace: default
resourceVersion: "1820"
uid: d51d309a-b99e-11e7-894c-0a77bb381638
spec:
progressDeadlineSeconds: 600
replicas: 1
revisionHistoryLimit: 2
selector:
matchLabels:
run: nginx
strategy:
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
run: nginx
spec:
containers:
- image: nginx
imagePullPolicy: Always
name: nginx
ports:
- containerPort: 80
protocol: TCP
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30
status:
availableReplicas: 1
conditions:
- lastTransitionTime: 2017-10-25T16:09:08Z
lastUpdateTime: 2017-10-25T16:09:08Z
message: Deployment has minimum availability.
reason: MinimumReplicasAvailable
status: "True"
type: Available
- lastTransitionTime: 2017-10-25T16:12:29Z
lastUpdateTime: 2017-10-25T16:12:32Z
message: ReplicaSet "nginx-1423793266" has successfully progressed.
reason: NewReplicaSetAvailable
status: "True"
type: Progressing
observedGeneration: 2
readyReplicas: 1
replicas: 1
updatedReplicas: 1

56
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# Edited to contain commented-out stress arguments. Remove
# the comments to pass those values to the container.
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "1"
generation: 1
labels:
app: hog
name: hog
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: hog
strategy:
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
app: hog
spec:
containers:
- image: vish/stress
imagePullPolicy: Always
name: hog
resources:
limits:
# cpu: "1"
memory: "4Gi"
requests:
# cpu: "0.5"
memory: "2500Mi"
# args:
# - -cpus
# - "2"
# - -mem-total
# - "1950Mi"
# - -mem-alloc-size
# - "100Mi"
# - -mem-alloc-sleep
# - "1s"
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30

54
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# Edited to contain new namespace
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "1"
generation: 1
labels:
run: hog
name: hog
namespace: low-usage-limit
spec:
replicas: 1
selector:
matchLabels:
run: hog
strategy:
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
run: hog
spec:
containers:
- image: vish/stress
imagePullPolicy: Always
name: hog
resources:
limits:
cpu: "1"
memory: "4Gi"
requests:
cpu: "0.5"
memory: "2500Mi"
args:
- -cpus
- "2"
- -mem-total
- "1950Mi"
- -mem-alloc-size
- "100Mi"
- -mem-alloc-sleep
- "1s"
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30

13
files/LFS258/SOLUTIONS/s_04/low-resource-range.yaml Normal file
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apiVersion: v1
kind: LimitRange
metadata:
name: low-resource-range
spec:
limits:
- default:
cpu: 1
memory: 500Mi
defaultRequest:
cpu: 0.5
memory: 100Mi
type: Container

20
files/LFS258/SOLUTIONS/s_05/curlpod.json Normal file
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@@ -0,0 +1,20 @@
{
"kind": "Pod",
"apiVersion": "v1",
"metadata":{
"name": "curlpod",
"namespace": "default",
"labels": {
"name": "examplepod"
}
},
"spec": {
"containers": [{
"name": "nginx",
"image": "nginx",
"ports": [{"containerPort": 80}]
}]
}
}

19
files/LFS258/SOLUTIONS/s_06/cron-job.yaml Normal file
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@@ -0,0 +1,19 @@
apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: date
spec:
schedule: "*/1 * * * *"
jobTemplate:
spec:
template:
spec:
containers:
- name: dateperminute
image: busybox
args:
- /bin/sh
- -c
- date; sleep 30
restartPolicy: OnFailure

18
files/LFS258/SOLUTIONS/s_06/cronjob.yaml Normal file
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@@ -0,0 +1,18 @@
apiVersion: batch/v1beta1
kind: CronJob
metadata:
name: sleepy
spec:
schedule: "*/2 * * * *"
jobTemplate:
spec:
template:
spec:
containers:
- name: resting
image: busybox
command: ["/bin/sleep"]
args: ["5"]
restartPolicy: Never

14
files/LFS258/SOLUTIONS/s_06/job.yaml Normal file
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@@ -0,0 +1,14 @@
apiVersion: batch/v1
kind: Job
metadata:
name: sleepy
spec:
template:
spec:
containers:
- name: resting
image: busybox
command: ["/bin/sleep"]
args: ["3"]
restartPolicy: Never

19
files/LFS258/SOLUTIONS/s_07/ds.yaml Normal file
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@@ -0,0 +1,19 @@
apiVersion: apps/v1
kind: DaemonSet
metadata:
name: ds-one
spec:
selector:
matchLabels:
system: DaemonSetOne
template:
metadata:
labels:
system: DaemonSetOne
spec:
containers:
- name: nginx
image: nginx:1.11.1
ports:
- containerPort: 80

38
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@@ -0,0 +1,38 @@
apiVersion: apps/v1
kind: DaemonSet
metadata:
creationTimestamp: 2017-10-25T19:59:25Z
generation: 3
labels:
system: DaemonSetOne
name: ds-two
namespace: default
spec:
revisionHistoryLimit: 10
selector:
matchLabels:
system: DaemonSetOne
template:
metadata:
creationTimestamp: null
labels:
system: DaemonSetOne
spec:
containers:
- image: nginx:1.11.1
imagePullPolicy: IfNotPresent
name: nginx
ports:
- containerPort: 80
protocol: TCP
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30
templateGeneration: 3
updateStrategy:
type: RollingUpdate

19
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apiVersion: apps/v1
kind: ReplicaSet
metadata:
name: rs-one
spec:
replicas: 2
selector:
matchLabels:
system: ReplicaOne
template:
metadata:
labels:
system: ReplicaOne
spec:
containers:
- name: nginx
image: nginx:1.15.1
ports:
- containerPort: 80

14
files/LFS258/SOLUTIONS/s_08/PVol.yaml Normal file
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@@ -0,0 +1,14 @@
apiVersion: v1
kind: PersistentVolume
metadata:
name: pvvol-1
spec:
capacity:
storage: 1Gi
accessModes:
- ReadWriteMany
persistentVolumeReclaimPolicy: Retain
nfs:
path: /opt/sfw
server: k8scp #<-- Edit to match cp node
readOnly: false

9
files/LFS258/SOLUTIONS/s_08/car-map.yaml Normal file
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@@ -0,0 +1,9 @@
apiVersion: v1
kind: ConfigMap
metadata:
name: fast-car
namespace: default
data:
car.make: Ford
car.model: Mustang
car.trim: Shelby

48
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@@ -0,0 +1,48 @@
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "1"
generation: 1
labels:
run: nginx
name: nginx-nfs #<-- Edit name
namespace: default
spec:
replicas: 1
selector:
matchLabels:
run: nginx
strategy:
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
run: nginx
spec:
containers:
- image: nginx
imagePullPolicy: Always
name: nginx
volumeMounts:
- name: nfs-vol
mountPath: /opt
ports:
- containerPort: 80
protocol: TCP
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
volumes: #<<-- These four lines
- name: nfs-vol
persistentVolumeClaim:
claimName: pvc-one
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30

10
files/LFS258/SOLUTIONS/s_08/pvc.yaml Normal file
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@@ -0,0 +1,10 @@
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: pvc-one
spec:
accessModes:
- ReadWriteMany
resources:
requests:
storage: 200Mi

14
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@@ -0,0 +1,14 @@
apiVersion: v1
kind: Pod
metadata:
name: shell-demo
spec:
containers:
- name: nginx
image: nginx
env:
- name: ilike
valueFrom:
configMapKeyRef:
name: colors
key: favorite

8
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@@ -0,0 +1,8 @@
apiVersion: v1
kind: ResourceQuota
metadata:
name: storagequota
spec:
hard:
persistentvolumeclaims: "10"
requests.storage: "500Mi"

11
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@@ -0,0 +1,11 @@
apiVersion: v1
kind: Pod
metadata:
name: ubuntu
spec:
containers:
- name: ubuntu
image: ubuntu:latest
command: [ "sleep" ]
args: [ "infinity" ]

41
files/LFS258/SOLUTIONS/s_09/nginx-one.yaml Normal file
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apiVersion: apps/v1
# Determines YAML versioned schema.
kind: Deployment
# Describes the resource defined in this file.
metadata:
name: nginx-one
labels:
system: secondary
# Required string which defines object within namespace.
namespace: accounting
# Existing namespace resource will be deployed into.
spec:
selector:
matchLabels:
system: secondary
# Declaration of the label for the deployment to manage
replicas: 2
# How many Pods of following containers to deploy
template:
metadata:
labels:
system: secondary
# Some string meaningful to users, not cluster. Keys
# must be unique for each object. Allows for mapping
# to customer needs.
spec:
containers:
# Array of objects describing containerized application with a Pod.
# Referenced with shorthand spec.template.spec.containers
- image: nginx:1.20.1
# The Docker image to deploy
imagePullPolicy: Always
name: nginx
# Unique name for each container, use local or Docker repo image
ports:
- containerPort: 8080
protocol: TCP
# Optional resources this container may need to function.
nodeSelector:
system: secondOne
# One method of node affinity.

14
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apiVersion: v1
kind: PersistentVolume
metadata:
name: dbvol-1
spec:
capacity:
storage: 8Gi
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
nfs:
path: /opt/sfw
server: k8scp #<-- Edit to match cp node
readOnly: false

14
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@@ -0,0 +1,14 @@
apiVersion: v1
kind: PersistentVolume
metadata:
name: dbvol-2
spec:
capacity:
storage: 8Gi
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
nfs:
path: /opt/sfw
server: k8scp #<-- Edit to match cp node
readOnly: false

37
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kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: traefik-ingress-controller
rules:
- apiGroups:
- ""
resources:
- services
- endpoints
- secrets
verbs:
- get
- list
- watch
- apiGroups:
- extensions
resources:
- ingresses
verbs:
- get
- list
- watch
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: traefik-ingress-controller
roleRef:
apiGroup: rbac.authorization.k8s.io
kind: ClusterRole
name: traefik-ingress-controller
subjects:
- kind: ServiceAccount
name: traefik-ingress-controller
namespace: kube-system

16
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@@ -0,0 +1,16 @@
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-test
annotations:
kubernetes.io/ingress.class: traefik
spec:
rules:
- host: www.example.com
http:
paths:
- backend:
serviceName: secondapp
servicePort: 80
path: /

22
files/LFS258/SOLUTIONS/s_11/ingress.yaml Normal file
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@@ -0,0 +1,22 @@
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: ingress-test
annotations:
kubernetes.io/ingress.class: nginx
namespace: default
spec:
rules:
- host: www.external.com
http:
paths:
- backend:
service:
name: web-one
port:
number: 80
path: /
pathType: ImplementationSpecific
status:
loadBalancer: {}

9
files/LFS258/SOLUTIONS/s_11/setupLinkerd.txt Normal file
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@@ -0,0 +1,9 @@
curl -sL run.linkerd.io/install | sh
export PATH=$PATH:/home/student/.linkerd2/bin
linkerd check --pre
linkerd install | kubectl apply -f -
linkerd check
linkerd viz install | kubectl apply -f -
linkerd viz check
linkerd viz dashboard &

58
files/LFS258/SOLUTIONS/s_11/traefik-ds.yaml Normal file
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@@ -0,0 +1,58 @@
---
apiVersion: v1
kind: ServiceAccount
metadata:
name: traefik-ingress-controller
namespace: kube-system
---
kind: DaemonSet
apiVersion: apps/v1
metadata:
name: traefik-ingress-controller
namespace: kube-system
labels:
k8s-app: traefik-ingress-lb
spec:
selector:
matchLabels:
name: traefik-ingress-lb
template:
metadata:
labels:
k8s-app: traefik-ingress-lb
name: traefik-ingress-lb
spec:
serviceAccountName: traefik-ingress-controller
terminationGracePeriodSeconds: 60
hostNetwork: True
containers:
- image: traefik:1.7.13
name: traefik-ingress-lb
ports:
- name: http
containerPort: 80
hostPort: 80
- name: admin
containerPort: 8080
hostPort: 8080
args:
- --api
- --kubernetes
- --logLevel=INFO
---
kind: Service
apiVersion: v1
metadata:
name: traefik-ingress-service
namespace: kube-system
spec:
selector:
k8s-app: traefik-ingress-lb
ports:
- protocol: TCP
port: 80
name: web
- protocol: TCP
port: 8080
name: admin

19
files/LFS258/SOLUTIONS/s_12/taint.yaml Normal file
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@@ -0,0 +1,19 @@
apiVersion: apps/v1
kind: Deployment
metadata:
name: taint-deployment
spec:
replicas: 8
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx:1.20.1
ports:
- containerPort: 80

28
files/LFS258/SOLUTIONS/s_12/vip.yaml Normal file
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@@ -0,0 +1,28 @@
apiVersion: v1
kind: Pod
metadata:
name: vip
spec:
containers:
- name: vip1
image: busybox
args:
- sleep
- "1000000"
- name: vip2
image: busybox
args:
- sleep
- "1000000"
- name: vip3
image: busybox
args:
- sleep
- "1000000"
- name: vip4
image: busybox
args:
- sleep
- "1000000"
nodeSelector:
status: vip

41
files/LFS258/SOLUTIONS/s_14/crd.yaml Normal file
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@@ -0,0 +1,41 @@
apiVersion: apiextensions.k8s.io/v1
kind: CustomResourceDefinition
metadata:
# name must match the spec fields below, and be in the form: <plural>.<group>
name: crontabs.stable.example.com
spec:
# group name to use for REST API: /apis/<group>/<version>
group: stable.example.com
# list of versions supported by this CustomResourceDefinition
versions:
- name: v1
# Each version can be enabled/disabled by Served flag.
served: true
# One and only one version must be marked as the storage version.
storage: true
schema:
openAPIV3Schema:
type: object
properties:
spec:
type: object
properties:
cronSpec:
type: string
image:
type: string
replicas:
type: integer
# either Namespaced or Cluster
scope: Namespaced
names:
# plural name to be used in the URL: /apis/<group>/<version>/<plural>
plural: crontabs
# singular name to be used as an alias on the CLI and for display
singular: crontab
# kind is normally the CamelCased singular type. Your resource manifests use this.
kind: CronTab
# shortNames allow shorter string to match your resource on the CLI
shortNames:
- ct

10
files/LFS258/SOLUTIONS/s_14/new-crontab.yaml Normal file
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@@ -0,0 +1,10 @@
apiVersion: "stable.example.com/v1"
# This is from the group and version of new CRD
kind: CronTab
# The kind from the new CRD
metadata:
name: new-cron-object
spec:
cronSpec: "*/5 * * * *"
image: some-cron-image
#Does not exist

10
files/LFS258/SOLUTIONS/s_15/role-dev.yaml Normal file
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@@ -0,0 +1,10 @@
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: development
name: developer
rules:
- apiGroups: ["", "extensions", "apps"]
resources: ["deployments", "replicasets", "pods"]
verbs: ["list", "get", "watch", "create", "update", "patch", "delete"]
# You can use ["*"] for all verbs

9
files/LFS258/SOLUTIONS/s_15/role-prod.yaml Normal file
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@@ -0,0 +1,9 @@
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: production
name: dev-prod
rules:
- apiGroups: ["", "extensions", "apps"]
resources: ["deployments", "replicasets", "pods"]
verbs: ["get", "list", "watch"] # You can also use ["*"]

9
files/LFS258/SOLUTIONS/s_15/role.yaml Normal file
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@@ -0,0 +1,9 @@
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: development
name: developer
rules:
- apiGroups: ["", "extensions", "apps"]
resources: ["deployments", "replicasets", "pods"]
verbs: ["get", "list", "watch", "create", "update", "patch", "delete"] # You can also use ["*"]

13
files/LFS258/SOLUTIONS/s_15/rolebind.yaml Normal file
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@@ -0,0 +1,13 @@
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: developer-role-binding
namespace: development
subjects:
- kind: User
name: DevDan
apiGroup: ""
roleRef:
kind: Role
name: developer
apiGroup: ""

13
files/LFS258/SOLUTIONS/s_15/rolebindprod.yaml Normal file
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@@ -0,0 +1,13 @@
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: production-role-binding #<-- Edit to production
namespace: production #<-- Also here
subjects:
- kind: User
name: DevDan
apiGroup: ""
roleRef:
kind: Role
name: dev-prod #<-- Also this
apiGroup: ""

55
files/LFS258/SOLUTIONS/s_16/haproxy.cfg Normal file
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@@ -0,0 +1,55 @@
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
stats socket /run/haproxy/admin.sock mode 660 level admin
stats timeout 30s
user haproxy
group haproxy
daemon
# Default SSL material locations
ca-base /etc/ssl/certs
crt-base /etc/ssl/private
# Default ciphers to use on SSL-enabled listening sockets.
# For more information, see ciphers(1SSL). This list is from:
# https://hynek.me/articles/hardening-your-web-servers-ssl-ciphers/
ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS
ssl-default-bind-options no-sslv3
defaults
log global
mode tcp
option tcplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
errorfile 400 /etc/haproxy/errors/400.http
errorfile 403 /etc/haproxy/errors/403.http
errorfile 408 /etc/haproxy/errors/408.http
errorfile 500 /etc/haproxy/errors/500.http
errorfile 502 /etc/haproxy/errors/502.http
errorfile 503 /etc/haproxy/errors/503.http
errorfile 504 /etc/haproxy/errors/504.http
frontend proxynode
bind *:80
bind *:6443
stats uri /proxystats
default_backend k8sServers
backend k8sServers
balance roundrobin
server cp1 10.128.0.24:6443 check #<-- Edit with your IP addresses.
# server cp2 10.128.0.30:6443 check
# server cp3 10.128.0.66:6443 check
listen stats
bind :9999
mode http
stats enable
stats hide-version
stats uri /stats

9
files/LFS258/SOLUTIONS/s_A/review1.yaml Normal file
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@@ -0,0 +1,9 @@
apiVersion: v1
kind: Pod
metadata:
name: break1
spec:
containers:
- name: mountain-region
image: nginx:1.11-apline

53
files/LFS258/SOLUTIONS/s_A/review2.yaml Normal file
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@@ -0,0 +1,53 @@
apiVersion: apps/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "1"
labels:
app: break2
name: break2
namespace: default
spec:
progressDeadlineSeconds: 600
replicas: 1
revisionHistoryLimit: 10
selector:
matchLabels:
app: break2
strategy:
rollingUpdate:
maxSurge: 25%
maxUnavailable: 25%
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
app: break2
spec:
containers:
- image: nginx
imagePullPolicy: Always
name: brokenapp
resources: {}
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
- name: goproxy
image: k8s.gcr.io/goproxy:0.1
readinessProbe:
tcpSocket:
port: 808
initialDelaySeconds: 5
periodSeconds: 10
livenessProbe:
tcpSocket:
port: 808
initialDelaySeconds: 15
periodSeconds: 20
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30
status:

28
files/LFS258/SOLUTIONS/s_A/review3.yaml Normal file
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@@ -0,0 +1,28 @@
apiVersion: v1
kind: Pod
metadata:
name: design-pod1
spec:
containers:
- image: vish/stress
name: design-pod1
resources:
limits:
cpu: "2.22"
memory: "567Mi"
requests:
cpu: "0.3"
memory: "456Mi"
args:
- -cpus
- "1"
- -mem-total
- "1036Mi"
- -mem-alloc-size
- "500Mi"
- -mem-alloc-sleep
- "1s"
#Domain CPU requirements

28
files/LFS258/SOLUTIONS/s_A/review4.yaml Normal file
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@@ -0,0 +1,28 @@
apiVersion: v1
kind: Pod
metadata:
name: design-pod1
spec:
containers:
- image: vish/stress
name: design-pod1
resources:
limits:
cpu: "2.22"
memory: "567Mi"
requests:
cpu: "0.3"
memory: "456Mi"
args:
- -cpus
- "1"
- -mem-total
- "1036Mi"
- -mem-alloc-size
- "500Mi"
- -mem-alloc-sleep
- "1s"
#Domain CPU requirements

46
files/LFS258/SOLUTIONS/s_A/review5.yaml Normal file
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@@ -0,0 +1,46 @@
apiVersion: v1
kind: List
items:
- apiVersion: v1
kind: Pod
metadata:
labels:
review: tux
name: label-pod1
spec:
containers:
- image: nginx
name: design-a
- apiVersion: v1
kind: Pod
metadata:
labels:
review: tux
name: label-pod2
spec:
containers:
- image: nginx
name: design-b
- apiVersion: v1
kind: Pod
metadata:
labels:
linux: rocks
name: label-pod3
spec:
containers:
- image: nginx
name: design-c
- apiVersion: v1
kind: Pod
metadata:
labels:
domain: review
name: label-pod4
spec:
containers:
- image: nginx
name: design-d
# Create pods with selectors

13
files/LFS258/SOLUTIONS/s_A/review6.yaml Normal file
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@@ -0,0 +1,13 @@
apiVersion: v1
kind: Pod
metadata:
name: securityreview
spec:
securityContext:
runAsUser: 2100
containers:
- name: webguy
image: nginx
securityContext:
runAsUser: 3000
allowPrivilegeEscalation: false

53
files/LFS258/SOLUTIONS/s_A/review7.yaml Normal file
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@@ -0,0 +1,53 @@
apiVersion: extensions/v1
kind: Deployment
metadata:
annotations:
deployment.kubernetes.io/revision: "1"
generation: 1
labels:
run: igottrouble
name: igottrouble
spec:
replicas: 0
selector:
matchLabels:
run: ugottrouble
strategy:
rollingUpdate:
maxSurge: 1
maxUnavailable: 1
type: RollingUpdate
template:
metadata:
creationTimestamp: null
labels:
run: igottrouble
spec:
containers:
- image: vish/stress
imagePullPolicy: Always
name: igottrouble
resources:
limits:
cpu: "1"
memory: "1Gi"
requests:
cpu: "2.5"
memory: "500Mi"
args:
- -cpus
- "2"
- -mem-total
- "1950Mi"
- -mem-alloc-size
- "100Mi"
- -mem-alloc-sleep
- "1s"
terminationMessagePath: /dev/termination-log
terminationMessagePolicy: File
dnsPolicy: ClusterFirst
restartPolicy: Always
schedulerName: default-scheduler
securityContext: {}
terminationGracePeriodSeconds: 30

6
files/kubeadm-config.yaml Normal file
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@@ -0,0 +1,6 @@
apiVersion: kubeadm.k8s.io/v1beta2
kind: ClusterConfiguration
kubernetesVersion: 1.22.1
controlPlaneEndpoint: "k8s-master:6443"
networking:
podSubnet: 10.20.0.0/16

77
files/kubeadm-crio.yaml Normal file
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apiVersion: kubeadm.k8s.io/v1beta2
bootstrapTokens:
- groups:
- system:bootstrappers:kubeadm:default-node-token
token: abcdef.0123456789abcdef
ttl: 24h0m0s
usages:
- signing
- authentication
kind: InitConfiguration
localAPIEndpoint:
bindPort: 6443
nodeRegistration:
criSocket: unix:///var/run/crio/crio.sock
name: k8s-master
taints: null
---
apiServer:
timeoutForControlPlane: 4m0s
apiVersion: kubeadm.k8s.io/v1beta2
certificatesDir: /etc/kubernetes/pki
clusterName: kubernetes
controllerManager: {}
dns:
type: CoreDNS
etcd:
local:
dataDir: /var/lib/etcd
imageRepository: k8s.gcr.io
kind: ClusterConfiguration
kubernetesVersion: 1.22.1
networking:
dnsDomain: cluster.local
serviceSubnet: 10.96.0.0/12
podSubnet: 10.20.0.0/16
scheduler: {}
---
apiVersion: kubelet.config.k8s.io/v1beta1
authentication:
anonymous:
enabled: false
webhook:
cacheTTL: 0s
enabled: true
x509:
clientCAFile: /etc/kubernetes/pki/ca.crt
authorization:
mode: Webhook
webhook:
cacheAuthorizedTTL: 0s
cacheUnauthorizedTTL: 0s
cgroupDriver: systemd
clusterDNS:
- 10.96.0.10
clusterDomain: cluster.local
cpuManagerReconcilePeriod: 0s
evictionPressureTransitionPeriod: 0s
fileCheckFrequency: 0s
healthzBindAddress: 127.0.0.1
healthzPort: 10248
httpCheckFrequency: 0s
imageMinimumGCAge: 0s
kind: KubeletConfiguration
logging: {}
nodeStatusReportFrequency: 0s
nodeStatusUpdateFrequency: 0s
resolvConf: /run/systemd/resolve/resolv.conf
rotateCertificates: true
runtimeRequestTimeout: 0s
shutdownGracePeriod: 0s
shutdownGracePeriodCriticalPods: 0s
staticPodPath: /etc/kubernetes/manifests
streamingConnectionIdleTimeout: 0s
syncFrequency: 0s
volumeStatsAggPeriod: 0s

35
install_crio.yml Normal file
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@@ -0,0 +1,35 @@
- name: Add keyring of CRI-O repo
apt_key:
url: https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable:/cri-o/Debian_11/Release.key
state: present
- name: Add keyring of CRI-O repo
apt_key:
url: https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable:/cri-o:/1.22/Debian_11/Release.key
state: present
- name: Add CRI-O Repo
apt_repository:
repo: "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_11/ /"
state: present
filename: "devel:kubic:libcontainers:stable.list"
- name: Add CRI-O Repo
apt_repository:
repo: "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable:/cri-o:/1.22/Debian_11/ /"
state: present
filename: "devel:kubic:libcontainers:stable:cri-o:Debian_11.list"
- name: Install CRI-O
apt:
name: "{{ item }}"
update_cache: true
loop:
- cri-o
- cri-o-runc
- name: Enable CRI-O Service
systemd:
name: crio
state: started
enabled: true

68
install_kubernetes.yml Normal file
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@@ -0,0 +1,68 @@
- name: Install prerequisits
apt:
name: "{{ item }}"
update_cache: true
loop:
- apt-transport-https
- ca-certificates
- curl
- name: Enable modules
community.general.modprobe:
name: "{{ item }}"
state: present
loop:
- overlay
- br_netfilter
- name: Enable modules persistantly
lineinfile:
path: /etc/modules
line: "{{ item }}"
state: present
insertafter: EOF
loop:
- overlay
- br_netfilter
- name: Set br_netfilter sysctl parameters
ansible.posix.sysctl:
name: "{{ item }}"
state: present
value: '1'
sysctl_set: true
sysctl_file: /etc/sysctl.d/99-kubernetes-cri.conf
loop:
- net.bridge.bridge-nf-call-iptables
- net.ipv4.ip_forward
- net.bridge.bridge-nf-call-ip6tables
- name: Install kubernetes repo key
apt_key:
url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
state: present
- name: Install kubernetes repo
apt_repository:
repo: "deb https://apt.kubernetes.io/ kubernetes-xenial main"
state: present
filename: kubernetes
- name: Install kubeadm
apt:
name: "{{ item }}"
allow_downgrade: true
state: present
loop:
- "kubectl=1.22.1-00"
- "kubelet=1.22.1-00"
- "kubeadm=1.22.1-00"
- name: Hold kubeadm
dpkg_selections:
name: "{{ item }}"
selection: hold
loop:
- kubeadm
- kubelet
- kubectl

11
inventory
View File

@@ -1,8 +1,15 @@
[k8s] [k8s]
[k8s_nodes]
k8s-node01 ansible_user=tim
k8s-node02 ansible_user=tim
k8s-node03 ansible_user=tim
k8s-node04 ansible_user=tim
[k8s_master] [k8s_master]
k8s-master ansible_user=pi k8s-master ansible_user=tim
[k8s:children] [k8s:children]
k8s_master k8s_master
k8s_nodes

34
k8s_master.yml Normal file
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@@ -0,0 +1,34 @@
- name: Get Calico Definition
get_url:
url: https://docs.projectcalico.org/manifests/calico.yaml
dest: /tmp/calico.yml
delegate_to: k8s-master
run_once: true
- name: Copy kubeadm-crio.yaml to k8s-master
ansible.builtin.copy:
src: "files/{{ item }}"
dest: "/root/{{ item }}"
owner: root
group: root
mode: '0644'
loop:
- "kubeadm-crio.yaml"
- "kubeadm-config.yaml"
delegate_to: k8s-master
run_once: true
- name: Init Cluster
shell: >
kubeadm init --config=/root/kubeadm-config.yaml --upload-certs | tee kubeadm-init.out
register: kubeadm_init
delegate_to: k8s-master
run_once: true
- debug:
msg: "{{ kubeadm_init.stdout }}"
run_once: true
- name: enable Calico
shell: kubectl apply -f /tmp/calico.yaml

0
k8s_nodes.yml Normal file
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0
kube-crio.yaml Normal file
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26
setup.yml
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@@ -1,10 +1,28 @@
--- ---
- name: Install and deplo a k8s cluster - name: Install and deplo a k8s cluster
hosts: k8s hosts: k8s
become: True become: True
vars:
enable_display: true
install_crio: true
install_kubernetes: true
etchostsupdate: true
tasks: tasks:
- name: Update all packages with APT - include_tasks:
apt: file: tweak_rpi4.yaml
update_cache: True - include_tasks:
upgrade: dist file: etchostsupdate.yaml
when: etchostsupdate
- include_tasks:
file: enable_display.yml
when: enable_display
- include_tasks:
file: install_crio.yml
when: install_crio
- include_tasks:
file: install_kubernetes.yml
when: install_kubernetes
- include_tasks:
file: k8s_master.yml

16
templates/etchosts.j2 Normal file
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@@ -0,0 +1,16 @@
# {{ ansible_managed }}
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
# The following lines are desirable for IPv6 capable hosts.
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
# Network nodes as generated through Ansible.
{% for host in play_hosts %}
{% if 'ansible_eth0' in hostvars[host] %}
{{ hostvars[host]['ansible_eth0']['ipv4']['address'] }} {{ host }}
{% endif %}
{% endfor %}

25
tweak_rpi4.yaml Normal file
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@@ -0,0 +1,25 @@
---
- name: Enable container features
replace:
path: /boot/cmdline.txt
regexp: '^([\w](?!.*\b{{ item }}\b).*)$'
replace: '\1 {{ item }}'
with_items:
- "cgroup_enable=cpuset"
- "cgroup_memory=1"
- "cgroup_enable=memory"
- "wapaccount=1"
register: cmdline
- name: Set Swappoff in conf file
lineinfile:
path: /etc/dphys-swapfile
line: CONF_SWAPSIZE=0
state: present
insertafter: EOF
register: swap
- name: Unconditionally reboot the machine with all defaults
reboot:
when: cmdline.changed or swap.changed