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add k8s bootstrap script #273

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add k8s bootstrap script #273

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5c64b39
add k8s bootstrap script
slapcat Oct 31, 2024
a20ce4a
add instruction to kubernetes/microk8s bundle MSGS
slapcat Oct 31, 2024
40bdcff
Merge branch 'canonical:main' into bootstrap-k8s
slapcat Nov 7, 2024
28bf5f5
add config option for cloud/model name
slapcat Nov 10, 2024
f33ff21
add automatic LB provisioning
slapcat Nov 22, 2024
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1 change: 1 addition & 0 deletions kubernetes/pipeline/00setup
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@ export -a MOD_PASSTHROUGH_OPTS=()
export -A MOD_MSGS=()
# Use order 0 to ensure this is first displayed
MOD_MSGS[0_common.0]="run ./configure to initialise your deployment"
MOD_MSGS[0_common.1]="run ./tools/bootstrap-k8s-cloud.sh to deploy k8s bundles"

# Array list of overlays to use with this deployment.
export -a MOD_OVERLAYS=()
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1 change: 1 addition & 0 deletions microk8s/pipeline/00setup
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Expand Up @@ -14,6 +14,7 @@ export -a MOD_PASSTHROUGH_OPTS=()
export -A MOD_MSGS=()
# Use order 0 to ensure this is first displayed
MOD_MSGS[0_common.0]="run ./configure to initialise your deployment"
MOD_MSGS[0_common.1]="run ./tools/bootstrap-k8s-cloud.sh to deploy k8s bundles"

# Array list of overlays to use with this deployment.
export -a MOD_OVERLAYS=()
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45 changes: 45 additions & 0 deletions tools/bootstrap-k8s-cloud.sh
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@@ -0,0 +1,45 @@
#!/bin/bash -x
# Usage: ./tools/bootstrap-k8s-cloud.sh <cloud-name> <model-name> <controller-name>
CLOUD="${1:-k8scloud}"
MODEL="${2:-secloud}"
CONTROLLER="${3:-k8slord}"

check_kubeconfig() {
if [[ -z "$KUBECONFIG" && ! -f "${HOME}/.kube/config" ]]; then
echo 'ERROR: Cannot find KUBECONFIG! Set as environment variable.'
exit 1
fi
}

get_storageclass() {
default_storageclass="$(kubectl get sc | grep default | awk '{print $1}')"
if [[ -z "$default_storageclass" ]]; then
enable_storage
fi
}

enable_storage() {
if leader="$(juju status --format json| jq -r '.applications["microk8s"].units|to_entries[]|select(.value["leader"])|.key' 2> /dev/null)"; then
echo 'Enabling hostpath-storage and MetalLB on Microk8s.'
juju ssh "$leader" sudo microk8s enable hostpath-storage
iprange="$(for i in `kubectl get nodes -o json | jq -r '.items[].status.addresses[] | select(.type=="InternalIP") | .address'`; do iprange+="$i-${i},"; done; echo $iprange | sed -e 's/,$//')"
juju ssh "$leader" sudo microk8s enable metallb:"$iprange"
elif leader="$(juju status --format json| jq -r '.applications["k8s"].units|to_entries[]|select(.value["leader"])|.key' 2> /dev/null)"; then
echo 'Enabling local-storage and load-balancer on Canonical K8s.'
juju ssh "$leader" sudo k8s enable local-storage
juju ssh "$leader" sudo k8s enable load-balancer
else
echo 'ERROR: No default storage class in Kubernetes. Try deploying a k8s bundle with --ceph.'
exit 1
fi
}

bootstrap_k8s() {
juju add-k8s "$CLOUD" --client
juju bootstrap "$CLOUD" "$CONTROLLER"
juju add-model "$MODEL"
}

check_kubeconfig
get_storageclass
bootstrap_k8s