Feat: more tweaks for 1.21 upgrade
This commit is contained in:
parent
7861c32079
commit
e6fa59f35d
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@ -1,43 +0,0 @@
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apiVersion: batch/v1
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kind: Job
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metadata:
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name: kubezero-upgrade-v1.21.7
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namespace: kube-system
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spec:
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backoffLimit: 1
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template:
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spec:
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hostNetwork: true
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#hostIPC: true
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#hostPID: true
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containers:
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- name: kubezero-admin
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image: public.ecr.aws/zero-downtime/kubezero-admin:v1.21.7
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imagePullPolicy: Always
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command: ["kubezero.sh"]
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args:
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- upgrade
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env:
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- name: DEBUG
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value: "1"
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volumeMounts:
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- name: host
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mountPath: /host
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- name: workdir
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mountPath: /tmp
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securityContext:
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capabilities:
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add: ["SYS_CHROOT"]
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volumes:
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- name: host
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hostPath:
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path: /
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type: Directory
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- name: workdir
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emptyDir: {}
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nodeSelector:
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node-role.kubernetes.io/master: ""
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tolerations:
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- key: node-role.kubernetes.io/master
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effect: NoSchedule
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restartPolicy: Never
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@ -1,5 +1,4 @@
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{{- if .Values.api.awsIamAuth.enabled }}
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# Controller role for consistency, similar to kubeadm admin.conf
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apiVersion: iamauthenticator.k8s.aws/v1alpha1
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kind: IAMIdentityMapping
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metadata:
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@ -8,11 +7,9 @@ spec:
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arn: {{ .Values.api.awsIamAuth.workerNodeRole }}
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username: system:node:{{ "{{" }}EC2PrivateDNSName{{ "}}" }}
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groups:
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# For now use masters, define properly with 1.20
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- system:masters
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- system:nodes
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- system:bootstrappers
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- system:bootstrappers:kubeadm:default-node-token
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---
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# Admin Role for remote access
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apiVersion: iamauthenticator.k8s.aws/v1alpha1
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kind: IAMIdentityMapping
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@ -3,6 +3,7 @@ set -e
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WORKDIR=/tmp/kubezero
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HOSTFS=/host
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VERSION=v1.21
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export KUBECONFIG="${HOSTFS}/root/.kube/config"
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@ -138,27 +139,26 @@ if [ "$1" == 'upgrade' ]; then
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######################
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helm repo add kubezero https://cdn.zero-downtime.net/charts/
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# if Calico, install multus to prepare migration
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kubectl get ds calico-node -n kube-system && \
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helm template kubezero/kubezero-network --version 0.1.0 --include-crds --namespace kube-system --kube-version $KUBE_VERSION --name-template network \
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--set multus.enabled=true \
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| kubectl apply -f - $LOG
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# network
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yq eval '.network // ""' ${HOSTFS}/etc/kubernetes/kubezero.yaml > _values.yaml
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helm template kubezero/kubezero-network --version 0.1.0 --include-crds --namespace kube-system --name-template network \
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-f _values.yaml --kube-version $KUBE_VERSION | kubectl apply -f - $LOG
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# migrate backup
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if [ -f ${HOSTFS}/usr/local/sbin/backup_control_plane.sh ]; then
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_repo=$(grep "export RESTIC_REPOSITORY" ${HOSTFS}/usr/local/sbin/backup_control_plane.sh)
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helm template kubezero/kubezero-addons --version 0.2.1 --include-crds --namespace kube-system --kube-version $KUBE_VERSION --name-template addons \
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--set clusterBackup.enabled=true \
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--set clusterBackup.repository="${_repo##*=}" \
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--set clusterBackup.password="$(cat ${HOSTFS}/etc/kubernetes/clusterBackup.passphrase)" \
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| kubectl apply -f - $LOG
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fi
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# addons
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yq eval '.addons // ""' ${HOSTFS}/etc/kubernetes/kubezero.yaml > _values.yaml
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helm template kubezero/kubezero-addons --version 0.2.2 --include-crds --namespace kube-system --name-template addons \
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-f _values.yaml --kube-version $KUBE_VERSION | kubectl apply -f - $LOG
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######################
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# Execute cluster backup to allow new controllers to join
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kubectl create job backup-cluster-now --from=cronjob/kubezero-backup -n kube-system
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# That might take a while as the backup pod needs the CNIs to come online etc.
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retry 10 30 40 kubectl wait --for=condition=complete job/backup-cluster-now -n kube-system && kubectl delete job backup-cluster-now -n kube-system
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# Cleanup after kubeadm on the host
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rm -rf /etc/kubernetes/tmp
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rm -rf ${HOSTFS}/etc/kubernetes/tmp
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echo "Successfully upgraded cluster."
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@ -169,6 +169,30 @@ if [ "$1" == 'upgrade' ]; then
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# Removed:
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# - update oidc do we need that ?
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elif [[ "$1" == 'node-upgrade' ]]; then
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echo "Starting node upgrade ..."
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if [ -f ${HOSTFS}/usr/local/sbin/backup_control_plane.sh ]; then
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mv ${HOSTFS}/usr/local/sbin/backup_control_plane.sh ${HOSTFS}/usr/local/sbin/backup_control_plane.disabled
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echo "Disabled old cluster backup OS cronjob"
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fi
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echo "Migrating kubezero.yaml"
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export restic_repo=$(grep "export RESTIC_REPOSITORY" ${HOSTFS}/usr/local/sbin/backup_control_plane.disabled | sed -e 's/.*=//' | sed -e 's/"//g')
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export restic_pw="$(cat ${HOSTFS}/etc/cloudbender/clusterBackup.passphrase)"
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export REGION=$(kubectl get node $NODE_NAME -o yaml | yq eval '.metadata.labels."topology.kubernetes.io/region"' -)
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# enable backup and awsIamAuth. multus, match other reorg
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yq -Mi e '.api.awsIamAuth.enabled = "true" | .api.awsIamAuth.workerNodeRole = .workerNodeRole | .api.awsIamAuth.kubeAdminRole = .kubeAdminRole
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| .api.serviceAccountIssuer = .serviceAccountIssuer | .api.apiAudiences = "istio-ca,sts.amazonaws.com"
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| .network.multus.enabled = "true"
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| .addons.clusterBackup.enabled = "true" | .addons.clusterBackup.repository = strenv(restic_repo) | .addons.clusterBackup.password = strenv(restic_pw)
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| .addons.clusterBackup.extraEnv[0].name = "AWS_DEFAULT_REGION" | .addons.clusterBackup.extraEnv[0].value = strenv(REGION)
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' ${HOSTFS}/etc/kubernetes/kubezero.yaml
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echo "All done."
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elif [[ "$1" =~ "^(bootstrap|recover|join)$" ]]; then
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@ -223,8 +247,8 @@ elif [[ "$1" =~ "^(bootstrap|recover|join)$" ]]; then
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yq eval -M ".clusters[0].cluster.certificate-authority-data = \"$(cat ${HOSTFS}/etc/kubernetes/pki/ca.crt | base64 -w0)\"" ${WORKDIR}/kubeadm/templates/admin-aws-iam.yaml > ${HOSTFS}/etc/kubernetes/admin-aws-iam.yaml
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fi
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# Install some basics on bootstrap
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if [[ "$1" =~ "^(bootstrap)$" ]]; then
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# Install some basics on bootstrap and join for 1.21.7 to get new modules in place
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if [[ "$1" =~ "^(bootstrap|join|recover)$" ]]; then
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helm repo add kubezero https://cdn.zero-downtime.net/charts/
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# network
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@ -234,7 +258,7 @@ elif [[ "$1" =~ "^(bootstrap|recover|join)$" ]]; then
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# addons
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yq eval '.addons // ""' ${HOSTFS}/etc/kubernetes/kubezero.yaml > _values.yaml
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helm template kubezero/kubezero-addons --version 0.2.1 --include-crds --namespace kube-system --name-template addons \
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helm template kubezero/kubezero-addons --version 0.2.2 --include-crds --namespace kube-system --name-template addons \
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-f _values.yaml --kube-version $KUBE_VERSION | kubectl apply -f - $LOG
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fi
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@ -263,15 +287,20 @@ elif [ "$1" == 'backup' ]; then
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# Backup via restic
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restic snapshots || restic init
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restic backup ${WORKDIR} -H $CLUSTERNAME
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restic backup ${WORKDIR} -H $CLUSTERNAME --tag $VERSION
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echo "Backup complete"
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# Remove all previous
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restic forget --keep-tag $VERSION --prune
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restic forget --keep-hourly 24 --keep-daily ${RESTIC_RETENTION:-7} --prune
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elif [ "$1" == 'restore' ]; then
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mkdir -p ${WORKDIR}
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restic restore latest --no-lock -t /
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restic restore latest --no-lock -t / --tag $VERSION
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# Make last etcd snapshot available
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cp ${WORKDIR}/etcd_snapshot ${HOSTFS}/etc/kubernetes
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@ -0,0 +1,121 @@
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#!/bin/bash
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set -eux
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# unset any AWS_DEFAULT_PROFILE as it will break aws-iam-auth
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unset AWS_DEFAULT_PROFILE
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nodes=$(kubectl get nodes -l node-role.kubernetes.io/control-plane -o json | jq .items[].metadata.name -r)
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for node in $nodes; do
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echo "Deploying node upgrade job on $node..."
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cat <<'EOF' | sed -e "s/__node__/$node/g" | kubectl apply -f -
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apiVersion: v1
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kind: Pod
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metadata:
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name: kubezero-upgrade-node-__node__
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namespace: kube-system
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labels:
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app: kubezero-upgrade-node
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spec:
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hostNetwork: true
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containers:
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- name: kubezero-admin
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image: public.ecr.aws/zero-downtime/kubezero-admin:v1.21.7
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imagePullPolicy: Always
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command: ["kubezero.sh"]
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args:
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- node-upgrade
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env:
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- name: DEBUG
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value: "1"
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- name: NODE_NAME
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valueFrom:
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fieldRef:
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fieldPath: spec.nodeName
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volumeMounts:
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- name: host
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mountPath: /host
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- name: workdir
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mountPath: /tmp
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securityContext:
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capabilities:
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add: ["SYS_CHROOT"]
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volumes:
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- name: host
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hostPath:
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path: /
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type: Directory
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- name: workdir
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emptyDir: {}
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nodeSelector:
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kubernetes.io/hostname: __node__
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tolerations:
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- key: node-role.kubernetes.io/master
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effect: NoSchedule
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restartPolicy: Never
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EOF
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kubectl wait pod kubezero-upgrade-node-$node -n kube-system --timeout 120s --for=condition=initialized
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while true; do
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kubectl logs kubezero-upgrade-node-$node -n kube-system -f && break
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sleep 3
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done
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kubectl delete pod kubezero-upgrade-node-$node -n kube-system
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done
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echo "Deploying cluster upgrade job ..."
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cat <<'EOF' | kubectl apply -f -
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apiVersion: v1
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kind: Pod
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metadata:
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name: kubezero-upgrade-v121
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namespace: kube-system
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labels:
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app: kubezero-upgrade
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spec:
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hostNetwork: true
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#hostIPC: true
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#hostPID: true
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containers:
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- name: kubezero-admin
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image: public.ecr.aws/zero-downtime/kubezero-admin:v1.21.7
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imagePullPolicy: Always
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command: ["kubezero.sh"]
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args:
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- upgrade
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env:
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- name: DEBUG
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value: "1"
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- name: NODE_NAME
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valueFrom:
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fieldRef:
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fieldPath: spec.nodeName
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volumeMounts:
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- name: host
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mountPath: /host
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- name: workdir
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mountPath: /tmp
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securityContext:
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capabilities:
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add: ["SYS_CHROOT"]
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volumes:
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- name: host
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hostPath:
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path: /
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type: Directory
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- name: workdir
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emptyDir: {}
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nodeSelector:
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node-role.kubernetes.io/master: ""
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tolerations:
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- key: node-role.kubernetes.io/master
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effect: NoSchedule
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restartPolicy: Never
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EOF
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kubectl wait pod kubezero-upgrade-v121 -n kube-system --timeout 120s --for=condition=initialized
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while true; do
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kubectl logs kubezero-upgrade-v121 -n kube-system -f && break
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sleep 3
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done
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@ -1,119 +0,0 @@
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#!/bin/bash
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set -e
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# Get all kube-control-plane ASGs in the current account and region
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asgs=$(aws autoscaling describe-auto-scaling-groups --output json | jq .AutoScalingGroups[].AutoScalingGroupName -r | grep kube-control-plane)
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for asg in $asgs; do
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hooks=$(aws autoscaling describe-lifecycle-hooks --auto-scaling-group-name $asg --output json | jq '.LifecycleHooks[] | select (.LifecycleTransition=="autoscaling:EC2_INSTANCE_TERMINATING") | .LifecycleHookName' -r)
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for hook in $hooks; do
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echo "Delete Lifecycle hook $hook of ASG $asg ? <Ctrl+C> to abort"
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read
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aws autoscaling delete-lifecycle-hook --lifecycle-hook-name $hook --auto-scaling-group-name $asg
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done
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done
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# unset any AWS_DEFAULT_PROFILE as it will break aws-iam-auth
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unset AWS_DEFAULT_PROFILE
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nodes=$(kubectl get nodes -l node-role.kubernetes.io/master -o json | jq .items[].metadata.name -r)
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for node in $nodes; do
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echo "Deploying upgrade job on $node..."
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cat <<'EOF' > _job.yaml
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apiVersion: batch/v1
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kind: Job
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metadata:
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name: kubezero-upgrade
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namespace: kube-system
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spec:
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template:
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spec:
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hostNetwork: true
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hostIPC: true
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hostPID: true
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containers:
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- name: busybox
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image: busybox
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command:
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- /bin/sh
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- -c
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- |
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cat <<'EOF' > /host/tmp/upgrade.sh
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#!/bin/bash -ex
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for l in $(cat /etc/environment); do
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export $l
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done
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my_ip=$(ec2metadata --local-ipv4)
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my_id=$(ec2metadata --instance-id)
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clusterName=$(yq r /etc/kubezero/kubezero.yaml clusterName)
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my_asg=$(aws ec2 describe-tags --filters "Name=resource-id,Values=${my_id}" --output json | jq '.Tags[] | select(.Key=="aws:cloudformation:logical-id") | .Value' -r)
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[ $my_asg == "KubeControlAsgAZ1" ] && nodename="etcd0-$clusterName"
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[ $my_asg == "KubeControlAsgAZ2" ] && nodename="etcd1-$clusterName"
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[ $my_asg == "KubeControlAsgAZ3" ] && nodename="etcd2-$clusterName"
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zone_name=$(hostname -d)
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zone_id=$(aws route53 list-hosted-zones --query 'HostedZones[?Name==`'"$zone_name"'.`].Id' --output text | cut --delimiter="/" --fields=3)
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cat <<EOF2 > route53.json
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{ "Changes": [ { "Action": "UPSERT", "ResourceRecordSet": { "Name": "${nodename}.${zone_name}", "Type": "A", "TTL": 30, "ResourceRecords": [ { "Value": "$my_ip" } ] } } ] }
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EOF2
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echo "Updating DNS entry for $nodename to $my_ip"
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aws route53 change-resource-record-sets --hosted-zone-id $zone_id --change-batch file://route53.json
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echo "Adding additional control shutdown commands"
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if [ ! -f /usr/local/sbin/drain_delete_node.sh ]; then
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cat <<EOF3 > /usr/local/sbin/drain_delete_node.sh
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#!/bin/bash -ex
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export LC_TYPE=en_US.UTF-8
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export KUBECONFIG=/root/.kube/config
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kubeadm reset phase update-cluster-status
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kubeadm reset phase remove-etcd-member
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EOF3
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chmod +x /usr/local/sbin/drain_delete_node.sh
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sed -e 's,/usr/local/sbin/backup_control_plane.sh&,/usr/local/sbin/drain_delete_node.sh,' -i /usr/local/sbin/cloudbender_shutdown.sh
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fi
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echo "Patching ClusterConfig to re-create new etcd server certificates"
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yq w /etc/kubezero/kubeadm/templates/ClusterConfiguration.yaml etcd.local.serverCertSANs[+] $nodename > /etc/kubernetes/kubeadm-recert.yaml
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yq w -i /etc/kubernetes/kubeadm-recert.yaml etcd.local.serverCertSANs[+] $nodename.$zone_name
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rm -f /etc/kubernetes/pki/etcd/server.*
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kubeadm init phase certs etcd-server --config=/etc/kubernetes/kubeadm-recert.yaml 2>/dev/null
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kill -s HUP $(ps -e | grep etcd | awk '{print $1}')
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echo "Waiting for etcd to accept connections again...might take 30s or more"
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while true; do
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etcdctl member list -w simple 1>/dev/null 2>&1 && break || true
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sleep 3
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done
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EOF
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chmod +x /host/tmp/upgrade.sh
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chroot /host bash -c /tmp/upgrade.sh
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volumeMounts:
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- name: host
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mountPath: /host
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securityContext:
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privileged: true
|
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volumes:
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- name: host
|
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hostPath:
|
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path: /
|
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type: Directory
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nodeSelector:
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kubernetes.io/hostname: __node__
|
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tolerations:
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- key: node-role.kubernetes.io/master
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effect: NoSchedule
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restartPolicy: Never
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EOF
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# set controller node
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sed -i -e "s/__node__/$node/" _job.yaml
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kubectl apply -f _job.yaml
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kubectl wait -n kube-system --timeout 300s --for=condition=complete job/kubezero-upgrade
|
||||
kubectl delete -f _job.yaml
|
||||
rm -f _job.yaml
|
||||
done
|
||||
Loading…
Reference in New Issue