230 lines
7.5 KiB
Bash
Executable File
230 lines
7.5 KiB
Bash
Executable File
#!/bin/bash
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set -eu
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cd "$(dirname "$0")"
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# This script is meant to be executed on the management machine.
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# it reaches out to an SSH endpoint and provisions that machine
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# to use LXD.
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DATA_PLANE_MACVLAN_INTERFACE=
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DISK_TO_USE=loop
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# override the cluster name.
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CLUSTER_NAME="${1:-}"
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if [ -z "$CLUSTER_NAME" ]; then
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echo "ERROR: The cluster name was not provided."
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exit 1
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fi
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#shellcheck disable=SC1091
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source ./defaults.sh
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export CLUSTER_PATH="$CLUSTERS_DIR/$CLUSTER_NAME"
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CLUSTER_DEFINITION="$CLUSTER_PATH/cluster_definition"
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export CLUSTER_DEFINITION="$CLUSTER_DEFINITION"
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mkdir -p "$CLUSTER_PATH"
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if [ ! -f "$CLUSTER_DEFINITION" ]; then
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# stub out a cluster_definition.
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cat >"$CLUSTER_DEFINITION" <<EOL
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#!/bin/bash
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# see https://www.sovereign-stack.org/cluster_definition for more info!
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export LXD_CLUSTER_PASSWORD="$(gpg --gen-random --armor 1 14)"
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export SOVEREIGN_STACK_MAC_ADDRESS="CHANGE_ME_REQUIRED"
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export PROJECT_NAME="public"
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export REGISTRY_URL="http://$(hostname).$(resolvectl status | grep 'DNS Domain:' | awk '{ print $3 }'):5000"
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export REGISTRY_USERNAME="CHANGE_ME"
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export REGISTRY_PASSWORD="CHANGE_ME"
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EOL
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chmod 0744 "$CLUSTER_DEFINITION"
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echo "We stubbed out a '$CLUSTER_DEFINITION' file for you."
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echo "Use this file to customize your cluster deployment;"
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echo "Check out 'https://www.sovereign-stack.org/cluster-definition' for an example."
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exit 1
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fi
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source "$CLUSTER_DEFINITION"
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if ! lxc remote list | grep -q "$CLUSTER_NAME"; then
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FQDN="${2:-}"
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shift
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if [ -z "$FQDN" ]; then
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echo "ERROR: The Fully Qualified Domain Name of the new cluster member was not set."
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exit 1
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fi
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# let's check to ensure we have SSH access to the specified host.
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if ! wait-for-it -t 5 "$FQDN:22"; then
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echo "ERROR: We can't get an SSH connection to '$FQDN:22'. Ensure you have the host set up correctly."
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exit 1
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fi
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# grab any modifications from the command line.
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for i in "$@"; do
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case $i in
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--data-plane-interface=*)
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DATA_PLANE_MACVLAN_INTERFACE="${i#*=}"
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shift
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;;
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--disk=*)
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DISK_TO_USE="${i#*=}"
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shift
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;;
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*)
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;;
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esac
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done
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# if [ -z "$DATA_PLANE_MACVLAN_INTERFACE" ]; then
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# echo "INFO: It looks like you didn't provide input on the command line for the data plane macvlan interface."
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# echo " We need to know which interface that is! Enter it here now."
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# echo ""
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# ssh "ubuntu@$FQDN" ip link
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# echo "Please enter the network interface that's dedicated to the Sovereign Stack data plane: "
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# read -r DATA_PLANE_MACVLAN_INTERFACE
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# fi
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# if [ -z "$DISK_TO_USE" ]; then
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# echo "INFO: It looks like the DISK_TO_USE has not been set. Enter it now."
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# echo ""
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# ssh "ubuntu@$FQDN" lsblk
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# USER_DISK=
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# echo "Please enter the disk or partition that Sovereign Stack will use to store data (default: loop): "
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# read -r USER_DISK
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# fi
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else
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echo "ERROR: the cluster already exists! You need to go delete your lxd remote if you want to re-create your cluster."
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echo " It's may also be helpful to reset/rename your cluster path."
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exit 1
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fi
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# ensure we actually have that interface on the system.
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echo "DATA_PLANE_MACVLAN_INTERFACE: $DATA_PLANE_MACVLAN_INTERFACE"
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if ! ssh "ubuntu@$FQDN" ip link | grep "$DATA_PLANE_MACVLAN_INTERFACE" | grep -q ",UP"; then
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echo "ERROR: We could not find your interface in our list of available interfaces. Please run this command again."
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echo "NOTE: You can always specify on the command line by adding the '--data-plane-interface=eth0', for example."
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exit 1
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fi
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# if the disk is loop-based, then we assume the / path exists.
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if [ "$DISK_TO_USE" != loop ]; then
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# ensure we actually have that disk/partition on the system.
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if ssh "ubuntu@$FQDN" lsblk | grep -q "$DISK_TO_USE"; then
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echo "ERROR: We could not the disk you specified. Please run this command again and supply a different disk."
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echo "NOTE: You can always specify on the command line by adding the '--disk=/dev/sdd', for example."
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exit 1
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fi
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fi
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# The MGMT Plane IP is the IP address that the LXD API binds to, which happens
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# to be the same as whichever SSH connection you're coming in on.
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MGMT_PLANE_IP="$(ssh ubuntu@"$FQDN" env | grep SSH_CONNECTION | cut -d " " -f 3)"
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IP_OF_MGMT_MACHINE="$(ssh ubuntu@"$FQDN" env | grep SSH_CLIENT | cut -d " " -f 1 )"
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IP_OF_MGMT_MACHINE="${IP_OF_MGMT_MACHINE#*=}"
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IP_OF_MGMT_MACHINE="$(echo "$IP_OF_MGMT_MACHINE" | cut -d: -f1)"
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# error out if the cluster password is unset.
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if [ -z "$LXD_CLUSTER_PASSWORD" ]; then
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echo "ERROR: LXD_CLUSTER_PASSWORD must be set in your cluster_definition."
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exit 1
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fi
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if ! command -v lxc >/dev/null 2>&1; then
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if lxc profile list --format csv | grep -q sovereign-stack; then
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lxc profile delete sovereign-stack
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sleep 1
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fi
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if lxc network list --format csv | grep -q lxdbrSS; then
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lxc network delete lxdbrSS
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sleep 1
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fi
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fi
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ssh -t "ubuntu@$FQDN" "
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# set host firewall policy.
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# allow LXD API from management network.
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# sudo ufw allow from ${IP_OF_MGMT_MACHINE}/32 proto tcp to $MGMT_PLANE_IP port 8443
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# enable it.
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# if sudo ufw status | grep -q 'Status: inactive'; then
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# sudo ufw enable
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# fi
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# install lxd as a snap if it's not installed. We only really use the LXC part of this package.
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if ! snap list | grep -q lxd; then
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sudo snap install lxd --candidate
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sleep 4
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fi
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"
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# if the DATA_PLANE_MACVLAN_INTERFACE is not specified, then we 'll
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# just attach VMs to the network interface used for for the default route.
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if [ -z "$DATA_PLANE_MACVLAN_INTERFACE" ]; then
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DATA_PLANE_MACVLAN_INTERFACE="$(ssh -t ubuntu@"$FQDN" ip route | grep default | cut -d " " -f 5)"
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fi
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# stub out the lxd init file for the remote SSH endpoint.
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CLUSTER_MASTER_LXD_INIT="$CLUSTER_PATH/lxdinit_profile.yml"
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cat >"$CLUSTER_MASTER_LXD_INIT" <<EOF
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config:
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core.https_address: ${MGMT_PLANE_IP}:8443
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core.trust_password: ${LXD_CLUSTER_PASSWORD}
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images.auto_update_interval: 15
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networks:
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- name: lxdbrSS
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type: bridge
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config:
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ipv4.address: 10.139.144.1/24
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ipv4.nat: "false"
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ipv4.dhcp: "false"
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ipv6.address: "none"
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dns.mode: "none"
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#managed: true
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description: ss-config,${DATA_PLANE_MACVLAN_INTERFACE:-},${DISK_TO_USE:-}
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# lxdbrSS is an isolated inter-vm network segment with no outbount Internet access.
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cluster:
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server_name: ${CLUSTER_NAME}
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enabled: true
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member_config: []
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cluster_address: ""
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cluster_certificate: ""
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server_address: ""
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cluster_password: ""
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cluster_certificate_path: ""
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cluster_token: ""
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EOF
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# configure the LXD Daemon with our preseed.
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cat "$CLUSTER_MASTER_LXD_INIT" | ssh "ubuntu@$FQDN" lxd init --preseed
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# ensure the lxd service is available over the network, then add a lxc remote, then switch the active remote to it.
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if wait-for-it -t 20 "$FQDN:8443"; then
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# now create a remote on your local LXC client and switch to it.
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# the software will now target the new cluster.
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lxc remote add "$CLUSTER_NAME" "$FQDN" --password="$LXD_CLUSTER_PASSWORD" --protocol=lxd --auth-type=tls --accept-certificate
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lxc remote switch "$CLUSTER_NAME"
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echo "INFO: You have create a new cluster named '$CLUSTER_NAME'. Great! We switched your lxd remote to it."
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else
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echo "ERROR: Could not detect the LXD endpoint. Something went wrong."
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exit 1
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fi
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echo "HINT: Now you can consider running 'ss-deploy'."
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