diff options
Diffstat (limited to 'tools/kubernetes/k8s-cluster.sh')
| -rw-r--r-- | tools/kubernetes/k8s-cluster.sh | 170 |
1 files changed, 13 insertions, 157 deletions
diff --git a/tools/kubernetes/k8s-cluster.sh b/tools/kubernetes/k8s-cluster.sh index d89b2e5..0d351ba 100644 --- a/tools/kubernetes/k8s-cluster.sh +++ b/tools/kubernetes/k8s-cluster.sh @@ -24,6 +24,9 @@ #. $ bash k8s-cluster.sh master #. $ bash k8s-cluster.sh workers "<nodes>" #. nodes: space-separated list of ceph node IPs +#. $ bash k8s-cluster.sh helm +#. Setup helm as kubernetes app management tool. Note this is a +#. prerequisite for selecting "helm" ceph-mode as described below. #. $ bash k8s-cluster.sh ceph "<nodes>" <cluster-net> <public-net> <ceph-mode> [ceph_dev] #. nodes: space-separated list of ceph node IPs #. cluster-net: CIDR of ceph cluster network e.g. 10.0.0.1/24 @@ -31,12 +34,10 @@ #. ceph-mode: "helm" or "baremetal" #. ceph_dev: disk to use for ceph. ***MUST NOT BE USED FOR ANY OTHER PURPOSE*** #. if not provided, ceph data will be stored on osd nodes in /ceph -#. $ bash k8s-cluster.sh helm -#. Setup helm as app kubernetes orchestration tool -#. $ bash k8s-cluster.sh demo -#. Install helm charts for mediawiki and dokuwiki #. $ bash k8s-cluster.sh all "<nodes>" <cluster-net> <public-net> <ceph-mode> [ceph_dev] -#. Runs all the steps above +#. Runs all the steps above, including starting dokuwiki demo app. +#. $ bash k8s-cluster.sh demo <start|stop> <chart> +#. Start or stop demo helm charts. See helm-tools.sh for chart options. #. #. When deployment is complete, the k8s API will be available at the master #. node, e.g. via: curl -k https://<master-ip>:6443/api/v1 @@ -167,151 +168,6 @@ function setup_k8s_workers() { log "Cluster is ready when all nodes in the output of 'kubectl get nodes' show as 'Ready'." } -function wait_for_service() { - log "Waiting for service $1 to be available" - pod=$(kubectl get pods --namespace default | awk "/$1/ { print \$1 }") - log "Service $1 is at pod $pod" - ready=$(kubectl get pods --namespace default -o jsonpath='{.status.containerStatuses[0].ready}' $pod) - while [[ "$ready" != "true" ]]; do - log "pod $1 is not yet ready... waiting 10 seconds" - sleep 10 - # TODO: figure out why transient pods sometimes mess up this logic, thus need to re-get the pods - pod=$(kubectl get pods --namespace default | awk "/$1/ { print \$1 }") - ready=$(kubectl get pods --namespace default -o jsonpath='{.status.containerStatuses[0].ready}' $pod) - done - log "pod $pod is ready" - host_ip=$(kubectl get pods --namespace default -o jsonpath='{.status.hostIP}' $pod) - port=$(kubectl get --namespace default -o jsonpath="{.spec.ports[0].nodePort}" services $1) - log "$pod pod is running on assigned node $host_ip" - log "$1 service is assigned node_port $port" - log "verify $1 service is accessible via all workers at node_port $port" - nodes=$(kubectl get nodes | awk '/Ready/ {print $1}') - for node in $nodes; do - ip=$(kubectl describe nodes $node | awk '/InternalIP/ { print $2}') - while ! curl http://$ip:$port ; do - log "$1 service is not yet responding at worker $node IP $ip... waiting 10 seconds" - sleep 10 - done - log "$1 service is accessible at worker $node at http://$ip:$port" - done -} - -function stop_chart() { - log "stop chart $1" - service=$(kubectl get services --namespace default | awk "/$1/ {print \$1}") - kubectl delete services --namespace default $service - secret=$(kubectl get secrets --namespace default | awk "/$1/ {print \$1}") - kubectl delete secrets --namespace default $secret - pod=$(kubectl get pods --namespace default | awk "/$1/ { print \$1 }") - kubectl delete pods --namespace default $pod - release=$(echo $service | cut -d '-' -f 1) - helm del --purge $release - job=$(kubectl get jobs --namespace default | awk "/$1/ {print \$1}") - kubectl delete jobs --namespace default $job -} - -function start_chart() { - rm -rf /tmp/git/charts - git clone https://github.com/kubernetes/charts.git /tmp/git/charts - cd /tmp/git/charts/stable - case "$1" in - nginx) - rm -rf /tmp/git/helm - git clone https://github.com/kubernetes/helm.git /tmp/git/helm - cd /tmp/git/helm/docs/examples - sed -i -- 's/type: ClusterIP/type: NodePort/' ./nginx/values.yaml - helm install --name nx -f ./nginx/values.yaml ./nginx - wait_for_service nx-nginx - ;; - mediawiki) - mkdir ./mediawiki/charts - cp -r ./mariadb ./mediawiki/charts - # LoadBalancer is N/A for baremetal (public cloud only) - use NodePort - sed -i -- 's/LoadBalancer/NodePort/g' ./mediawiki/values.yaml - # Select the storageClass created in the ceph setup step - sed -i -- 's/# storageClass:/storageClass: "general"/g' ./mediawiki/values.yaml - sed -i -- 's/# storageClass: "-"/storageClass: "general"/g' ./mediawiki/charts/mariadb/values.yaml - helm install --name mw -f ./mediawiki/values.yaml ./mediawiki - wait_for_service mw-mediawiki - ;; - dokuwiki) - sed -i -- 's/# storageClass:/storageClass: "general"/g' ./dokuwiki/values.yaml - sed -i -- 's/LoadBalancer/NodePort/g' ./dokuwiki/values.yaml - helm install --name dw -f ./dokuwiki/values.yaml ./dokuwiki - wait_for_service dw-dokuwiki - ;; - wordpress) - mkdir ./wordpress/charts - cp -r ./mariadb ./wordpress/charts - sed -i -- 's/LoadBalancer/NodePort/g' ./wordpress/values.yaml - sed -i -- 's/# storageClass: "-"/storageClass: "general"/g' ./wordpress/values.yaml - sed -i -- 's/# storageClass: "-"/storageClass: "general"/g' ./wordpress/charts/mariadb/values.yaml - helm install --name wp -f ./wordpress/values.yaml ./wordpress - wait_for_service wp-wordpress - ;; - redmine) - mkdir ./redmine/charts - cp -r ./mariadb ./redmine/charts - cp -r ./postgresql ./redmine/charts - sed -i -- 's/LoadBalancer/NodePort/g' ./redmine/values.yaml - sed -i -- 's/# storageClass: "-"/storageClass: "general"/g' ./redmine/values.yaml - sed -i -- 's/# storageClass: "-"/storageClass: "general"/g' ./redmine/charts/mariadb/values.yaml - sed -i -- 's/# storageClass: "-"/storageClass: "general"/g' ./redmine/charts/postgresql/values.yaml - helm install --name rdm -f ./redmine/values.yaml ./redmine - wait_for_service rdm-redmine - ;; - owncloud) - # NOT YET WORKING: needs resolvable hostname for service - mkdir ./owncloud/charts - cp -r ./mariadb ./owncloud/charts - sed -i -- 's/LoadBalancer/NodePort/g' ./owncloud/values.yaml - sed -i -- 's/# storageClass: "-"/storageClass: "general"/g' ./owncloud/values.yaml - sed -i -- 's/# storageClass: "-"/storageClass: "general"/g' ./owncloud/charts/mariadb/values.yaml - helm install --name oc -f ./owncloud/values.yaml ./owncloud - wait_for_service oc-owncloud - ;; - *) - log "demo not implemented for $1" - esac -# extra useful commands -# kubectl describe pvc -# kubectl get pvc -# kubectl describe pods -# kubectl get pods --namespace default -# kubectl get pods --all-namespaces -# kubectl get svc --namespace default dw-dokuwiki -# kubectl describe svc --namespace default dw-dokuwiki -# kubectl describe pods --namespace default dw-dokuwiki -} - -function setup_helm() { - log "Setup helm" - # Install Helm - cd ~ - curl https://raw.githubusercontent.com/kubernetes/helm/master/scripts/get > get_helm.sh - chmod 700 get_helm.sh - ./get_helm.sh - helm init - nohup helm serve > /dev/null 2>&1 & - helm repo update - # TODO: Workaround for bug https://github.com/kubernetes/helm/issues/2224 - # For testing use only! - kubectl create clusterrolebinding permissive-binding --clusterrole=cluster-admin --user=admin --user=kubelet --group=system:serviceaccounts; - # TODO: workaround for tiller FailedScheduling (No nodes are available that match all of the following predicates:: PodToleratesNodeTaints (1).) - # kubectl taint nodes $HOSTNAME node-role.kubernetes.io/master:NoSchedule- - # Wait till tiller is running - tiller_deploy=$(kubectl get pods --all-namespaces | grep tiller-deploy | awk '{print $4}') - while [[ "$tiller_deploy" != "Running" ]]; do - log "tiller-deploy status is $tiller_deploy. Waiting 60 seconds for it to be 'Running'" - sleep 60 - tiller_deploy=$(kubectl get pods --all-namespaces | grep tiller-deploy | awk '{print $4}') - done - log "tiller-deploy status is $tiller_deploy" - - # Install services via helm charts from https://kubeapps.com/charts - # e.g. helm install stable/dokuwiki -} - function setup_ceph() { if [[ "$4" == "helm" ]]; then source ./ceph-helm.sh "$1" $2 $3 $5 @@ -338,23 +194,23 @@ case "$1" in setup_ceph "$2" $3 $4 $5 $6 ;; helm) - setup_helm + bash ./helm-tools.sh setup ;; demo) if [[ "$2" == "start" ]]; then - start_chart $3 + bash ./helm-tools.sh start $3 else - stop_chart $3 + bash ./helm-tools.sh stop $3 fi ;; all) setup_k8s_master setup_k8s_workers "$2" - setup_helm - start_chart nginx - stop_chart nginx + bash ./helm-tools.sh setup + bash ./helm-tools.sh start nginx + bash ./helm-tools.sh stop nginx setup_ceph "$2" $3 $4 $5 $6 - start_chart dokuwiki + bash ./helm-tools.sh start dokuwiki ;; clean) # TODO |