3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
18 #installs kubernetes packages
19 function install_kube
() {
20 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
22 # Kubernetes releases can be found here: https://kubernetes.io/releases/
23 # To check other available versions, run the following command
24 # curl -s https://packages.cloud.google.com/apt/dists/kubernetes-xenial/main/binary-amd64/Packages | grep Version | awk '{print $2}'
25 sudo apt-get update
&& sudo apt-get
install -y apt-transport-https
26 sudo apt-get update
&& sudo apt-get
install -y apt-transport-https
27 curl
-fsSL https
://packages.cloud.google.com
/apt
/doc
/apt-key.gpg | sudo apt-key add
-
28 sudo add-apt-repository
"deb https://apt.kubernetes.io/ kubernetes-xenial main"
30 echo "Installing Kubernetes Packages ..."
31 sudo apt-get
install -y kubelet
=${K8S_VERSION} kubeadm=${K8S_VERSION} kubectl=${K8S_VERSION}
32 cat << EOF | sudo tee -a /etc/default/kubelet
33 KUBELET_EXTRA_ARGS="--cgroup-driver=cgroupfs"
35 sudo apt-mark hold kubelet kubeadm kubectl
36 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
39 #initializes kubernetes control plane
40 function init_kubeadm
() {
41 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
43 sudo
sed -i.bak
'/.*none.*swap/s/^\(.*\)$/#\1/g' /etc
/fstab
44 sudo kubeadm init
--config $1
46 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
49 function kube_config_dir
() {
50 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
51 K8S_MANIFEST_DIR
="/etc/kubernetes/manifests"
52 [ ! -d $K8S_MANIFEST_DIR ] && FATAL
"Cannot Install Kubernetes"
54 sudo
cp /etc
/kubernetes
/admin.conf
$HOME/.kube
/config
55 sudo chown $
(id
-u):$
(id
-g) $HOME/.kube
/config
56 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
59 #deploys flannel as daemonsets
60 function deploy_cni_provider
() {
61 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
62 CNI_DIR
="$(mktemp -d -q --tmpdir "flannel.XXXXXX
")"
63 trap 'rm -rf "${CNI_DIR}"' EXIT
64 wget
--retry-on-host-error --retry-on-http-error 404,429,503 --tries=5 https
://raw.githubusercontent.com
/coreos
/flannel
/master
/Documentation
/kube-flannel.yml
-P $CNI_DIR
65 [ ! -f $CNI_DIR/kube-flannel.yml
] && FATAL
"Cannot Install Flannel because $CNI_DIR/kube-flannel.yml was not found. Maybe the file https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml is temporarily not accessible"
66 kubectl apply
-f $CNI_DIR
67 [ $?
-ne 0 ] && FATAL
"Cannot Install Flannel"
68 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
71 #taints K8s master node
72 function taint_master_node
() {
73 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
74 K8S_MASTER
=$
(kubectl get nodes |
awk '$3~/master/'|
awk '{print $1}')
75 kubectl taint node
$K8S_MASTER node-role.kubernetes.io
/master
:NoSchedule-
77 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
81 #Helm releases can be found here: https://github.com/helm/helm/releases
82 function install_helm
() {
83 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
85 if ! [[ "$(helm version --short 2>/dev/null)" =~ ^v3.
* ]]; then
86 # Helm is not installed. Install helm
87 echo "Helm3 is not installed, installing ..."
88 curl https
://get.helm.sh
/helm-
${HELM_VERSION}-linux-amd64.
tar.gz
--output helm-
${HELM_VERSION}.
tar.gz
89 tar -zxvf helm-
${HELM_VERSION}.
tar.gz
90 sudo
mv linux-amd64
/helm
/usr
/local
/bin
/helm
92 rm helm-
${HELM_VERSION}.
tar.gz
94 echo "Helm3 is already installed. Skipping installation..."
96 helm repo add stable https
://charts.helm.sh
/stable
98 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
101 function install_k8s_storageclass
() {
102 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
103 echo "Installing open-iscsi"
105 sudo apt-get
install open-iscsi
106 sudo systemctl
enable --now iscsid
107 OPENEBS_VERSION
="3.1.0"
108 echo "Installing OpenEBS"
109 helm repo add openebs https
://openebs.github.io
/charts
111 helm
install --create-namespace --namespace openebs openebs openebs
/openebs
--version ${OPENEBS_VERSION}
113 local storageclass_timeout
=400
115 local storageclass_ready
=""
116 echo "Waiting for storageclass"
117 while (( counter
< storageclass_timeout
))
119 kubectl get storageclass openebs-hostpath
&> /dev
/null
121 if [ $?
-eq 0 ] ; then
122 echo "Storageclass available"
123 storageclass_ready
="y"
126 counter
=$
((counter
+ 15))
130 [ -n "$storageclass_ready" ] || FATAL
"Storageclass not ready after $storageclass_timeout seconds. Cannot install openebs"
131 kubectl
patch storageclass openebs-hostpath
-p '{"metadata": {"annotations":{"storageclass.kubernetes.io/is-default-class":"true"}}}'
132 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
135 #installs metallb from helm
136 function install_helm_metallb
() {
137 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
138 echo "Installing MetalLB"
139 METALLB_VERSION
="0.11.0"
140 METALLB_IP_RANGE
="$DEFAULT_IP/32"
146 - $METALLB_IP_RANGE" | sudo
tee -a ${OSM_DOCKER_WORK_DIR}/metallb-config.yaml
147 helm repo add metallb https
://metallb.github.io
/metallb
149 helm
install --create-namespace --namespace metallb-system metallb metallb
/metallb
--version ${METALLB_VERSION} -f ${OSM_DOCKER_WORK_DIR}/metallb-config.yaml
150 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
153 #checks openebs and metallb readiness
154 function check_for_readiness
() {
155 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
156 # Default input values
157 sampling_period
=2 # seconds
158 time_for_readiness
=20 # seconds ready
159 time_for_failure
=200 # seconds broken
160 OPENEBS_NAMESPACE
=openebs
161 METALLB_NAMESPACE
=metallb-system
162 # STACK_NAME=osm # By default, "osm"
164 # Equivalent number of samples
165 oks_threshold
=$
((time_for_readiness
/${sampling_period})) # No. ok samples to declare the system ready
166 failures_threshold
=$
((time_for_failure
/${sampling_period})) # No. nok samples to declare the system broken
170 ####################################################################################
171 # Loop to check system readiness
172 ####################################################################################
173 while [[ (${failures_in_a_row} -lt ${failures_threshold}) && (${oks_in_a_row} -lt ${oks_threshold}) ]]
176 OPENEBS_STATE
=$
(kubectl get pod
-n ${OPENEBS_NAMESPACE} --no-headers 2>&1)
177 OPENEBS_READY
=$
(echo "${OPENEBS_STATE}" |
awk '$2=="1/1" || $2=="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
178 OPENEBS_NOT_READY
=$
(echo "${OPENEBS_STATE}" |
awk '$2!="1/1" && $2!="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
179 COUNT_OPENEBS_READY
=$
(echo "${OPENEBS_READY}"|
grep -v -e '^$' |
wc -l)
180 COUNT_OPENEBS_NOT_READY
=$
(echo "${OPENEBS_NOT_READY}" |
grep -v -e '^$' |
wc -l)
183 METALLB_STATE
=$
(kubectl get pod
-n ${METALLB_NAMESPACE} --no-headers 2>&1)
184 METALLB_READY
=$
(echo "${METALLB_STATE}" |
awk '$2=="1/1" || $2=="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
185 METALLB_NOT_READY
=$
(echo "${METALLB_STATE}" |
awk '$2!="1/1" && $2!="2/2" {printf ("%s\t%s\t\n", $1, $2)}')
186 COUNT_METALLB_READY
=$
(echo "${METALLB_READY}" |
grep -v -e '^$' |
wc -l)
187 COUNT_METALLB_NOT_READY
=$
(echo "${METALLB_NOT_READY}" |
grep -v -e '^$' |
wc -l)
190 if [[ $
((${COUNT_OPENEBS_NOT_READY}+${COUNT_METALLB_NOT_READY})) -eq 0 ]]
194 echo -ne ===\
> Successful checks
: "${oks_in_a_row}"/${oks_threshold}\\r
197 ((++failures_in_a_row
))
200 echo Bootstraping...
"${failures_in_a_row}" checks of
${failures_threshold}
202 # Reports failed pods in OpenEBS
203 if [[ "${COUNT_OPENEBS_NOT_READY}" -ne 0 ]]
205 echo "OpenEBS: Waiting for ${COUNT_OPENEBS_NOT_READY} of $((${COUNT_OPENEBS_NOT_READY}+${COUNT_OPENEBS_READY})) pods to be ready:"
206 echo "${OPENEBS_NOT_READY}"
210 # Reports failed statefulsets
211 if [[ "${COUNT_METALLB_NOT_READY}" -ne 0 ]]
213 echo "MetalLB: Waiting for ${COUNT_METALLB_NOT_READY} of $((${COUNT_METALLB_NOT_READY}+${COUNT_METALLB_READY})) pods to be ready:"
214 echo "${METALLB_NOT_READY}"
219 #------------ NEXT SAMPLE
220 sleep ${sampling_period}
223 ####################################################################################
225 ####################################################################################
226 if [[ (${failures_in_a_row} -ge ${failures_threshold}) ]]
229 FATAL
"K8S CLUSTER IS BROKEN"
232 echo "K8S CLUSTER IS READY"
234 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
237 #removes osm deployments and services
238 function remove_k8s_namespace
() {
239 [ -z "${DEBUG_INSTALL}" ] || DEBUG beginning of
function
240 kubectl delete ns
$1 2>&1 >/dev
/null
241 [ -z "${DEBUG_INSTALL}" ] || DEBUG end of
function
245 while getopts ":D:d:i:-: " o
; do
248 DEFAULT_IP
="${OPTARG}"
251 OSM_DOCKER_WORK_DIR
="${OPTARG}"
254 OSM_DEVOPS
="${OPTARG}"
257 [ "${OPTARG}" == "debug" ] && DEBUG_INSTALL
="y" && continue
258 echo -e "Invalid option: '--$OPTARG'\n" >&2
262 echo "Option -$OPTARG requires an argument" >&2
266 echo -e "Invalid option: '-$OPTARG'\n" >&2
275 source $OSM_DEVOPS/common
/logging
276 source $OSM_DEVOPS/common
/track
278 echo "DEBUG_INSTALL=$DEBUG_INSTALL"
279 echo "DEFAULT_IP=$DEFAULT_IP"
280 echo "OSM_DEVOPS=$OSM_DEVOPS"
281 echo "OSM_DOCKER_WORK_DIR=$OSM_DOCKER_WORK_DIR"
282 echo "INSTALL_K8S_MONITOR=$INSTALL_K8S_MONITOR"
287 track k8scluster install_k8s_ok
288 init_kubeadm
$OSM_DOCKER_WORK_DIR/cluster-config.yaml
290 track k8scluster init_k8s_ok
291 if [ -n "$INSTALL_K8S_MONITOR" ]; then
292 # uninstall OSM MONITORING
293 uninstall_k8s_monitoring
294 track k8scluster uninstall_k8s_monitoring_ok
296 #remove old namespace
297 remove_k8s_namespace osm
301 track k8scluster install_helm_ok
302 install_k8s_storageclass
303 track k8scluster k8s_storageclass_ok
305 track k8scluster k8s_metallb_ok
307 track k8scluster k8s_ready_ok