ss/sovereign-stack
ss/sovereign-stack
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sovereign-stack/cluster.sh

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#!/bin/bash
set -ex
# NOTE This script is meant to be executed on your LXD bare metal servers. This script
# ensures that the LXD daemon is installed via snap package, then initialize the daemon
# to operate in clustered mode
COMMAND="$1"
DATA_PLANE_MACVLAN_INTERFACE=
DISK_TO_USE=loop
if [ "$COMMAND" = create ]; then
# override the cluster name.
CLUSTER_NAME="$2"
if [ -z "$CLUSTER_NAME" ]; then
echo "ERROR: The cluster name was not provided."
exit 1
fi
source ./defaults.sh
export LXD_REMOTE_PATH="$CLUSTERS_DIR/$CLUSTER_NAME"
CLUSTER_DEFINITION="$LXD_REMOTE_PATH/cluster_definition"
export CLUSTER_DEFINITION="$CLUSTER_DEFINITION"
mkdir -p "$LXD_REMOTE_PATH"
if [ ! -f "$CLUSTER_DEFINITION" ]; then
# stub out a cluster_definition.
cat >"$CLUSTER_DEFINITION" <<EOL
#!/bin/bash
# Note: the path above ./ corresponds to your LXD Remote. If your remote is set to 'cluster1'
# Then $HOME/clusters/cluster1 will be your cluster working path.
export LXD_CLUSTER_PASSWORD="$(gpg --gen-random --armor 1 14)"
# This is REQUIRED. A list of all sites in ~/sites/ that will be deployed.
# e.g., 'domain1.tld,domain2.tld,domain3.tld' Add all your domains that will
# run within this SS deployment.
SITE_LIST="domain1.tld"
# Deploy a registry cache on your management machine.
DEPLOY_REGISTRY=true
# only relevant
export REGISTRY_URL="http://${HOSTNAME}:5000"
export REGISTRY_USERNAME=""
export REGISTRY_PASSWORD=""
EOL
chmod 0744 "$CLUSTER_DEFINITION"
echo "We stubbed out a '$CLUSTER_DEFINITION' file for you."
echo "Use this file to customize your cluster deployment;"
echo "Check out 'https://www.sovereign-stack.org/cluster-definition' for an example."
exit 1
fi
source "$CLUSTER_DEFINITION"
if ! lxc remote list | grep -q "$CLUSTER_NAME"; then
FQDN="$3"
echo "FQDN: $FQDN"
if [ -z "$FQDN" ]; then
echo "ERROR: The Fully Qualified Domain Name of the new cluster member was not set."
exit 1
fi
# let's check to ensure we have SSH access to the specified host.
if ! wait-for-it -t 5 "$FQDN:22"; then
echo "ERROR: We can't get an SSH connection to '$FQDN:22'. Ensure you have the host set up correctly."
exit 1
fi
# grab any modifications from the command line.
for i in "$@"; do
case $i in
--data-plane-interface=*)
DATA_PLANE_MACVLAN_INTERFACE="${i#*=}"
shift
;;
--disk=*)
DISK_TO_USE="${i#*=}"
shift
;;
*)
# unknown option
;;
esac
done
# if [ -z "$DATA_PLANE_MACVLAN_INTERFACE" ]; then
# echo "INFO: It looks like you didn't provide input on the command line for the data plane macvlan interface."
# echo " We need to know which interface that is! Enter it here now."
# echo ""
# ssh "ubuntu@$FQDN" ip link
# echo "Please enter the network interface that's dedicated to the Sovereign Stack data plane: "
# read DATA_PLANE_MACVLAN_INTERFACE
# fi
# if [ -z "$DISK_TO_USE" ]; then
# echo "INFO: It looks like the DISK_TO_USE has not been set. Enter it now."
# echo ""
# ssh "ubuntu@$FQDN" lsblk
# USER_DISK=
# echo "Please enter the disk or partition that Sovereign Stack will use to store data (default: loop): "
# read USER_DISK
# fi
else
echo "ERROR: the cluster already exists! You need to go delete your lxd remote if you want to re-create your cluster."
echo " It's may also be helpful to reset/rename your cluster path."
exit 1
fi
# ensure we actually have that interface on the system.
echo "DATA_PLANE_MACVLAN_INTERFACE: $DATA_PLANE_MACVLAN_INTERFACE"
if ! ssh "ubuntu@$FQDN" ip link | grep "$DATA_PLANE_MACVLAN_INTERFACE" | grep -q ",UP"; then
echo "ERROR: We could not find your interface in our list of available interfaces. Please run this command again."
echo "NOTE: You can always specify on the command line by adding the '--data-plane-interface=eth0', for example."
exit 1
fi
# if the disk is loop-based, then we assume the / path exists.
if [ "$DISK_TO_USE" != loop ]; then
# ensure we actually have that disk/partition on the system.
if ssh "ubuntu@$FQDN" lsblk | grep -q "$DISK_TO_USE"; then
echo "ERROR: We could not the disk you specified. Please run this command again and supply a different disk."
echo "NOTE: You can always specify on the command line by adding the '--disk=/dev/sdd', for example."
exit 1
fi
fi
# The MGMT Plane IP is the IP address that the LXD API binds to, which happens
# to be the same as whichever SSH connection you're coming in on.
MGMT_PLANE_IP="$(ssh ubuntu@"$FQDN" env | grep SSH_CONNECTION | cut -d " " -f 3)"
# if the LXD_CLUSTER_PASSWORD wasnt set, we can generate a random one using gpg.
if [ -z "$LXD_CLUSTER_PASSWORD" ]; then
echo "ERROR: LXD_CLUSTER_PASSWORD must be set in your cluster_definition."
exit 1
fi
if lxc profile list --format csv | grep -q sovereign-stack; then
lxc profile delete sovereign-stack
sleep 1
fi
if lxc network list --format csv | grep -q lxdfanSS; then
lxc network delete lxdfanSS
sleep 1
fi
ssh -t "ubuntu@$FQDN" "
# set host firewall policy.
# allow SSH from management network.
sudo ufw allow from 192.168.1.0/24 proto tcp to $MGMT_PLANE_IP port 22
sudo ufw allow from 192.168.4.0/24 proto tcp to $MGMT_PLANE_IP port 8443
# allow 8443 from management subnets
sudo ufw allow from 192.168.1.0/24 proto tcp to $MGMT_PLANE_IP port 8443
sudo ufw allow from 192.168.4.0/24 proto tcp to $MGMT_PLANE_IP port 8443
# enable it.
if sudo ufw status | grep -q 'Status: inactive'; then
sudo ufw enable
fi
# install lxd as a snap if it's not installed. We only really use the LXC part of this package.
if ! snap list | grep -q lxd; then
sudo -A snap install lxd
sleep 4
fi
"
# if the DATA_PLANE_MACVLAN_INTERFACE is not specified, then we 'll
# just attach VMs to the network interface used for for the default route.
if [ -z "$DATA_PLANE_MACVLAN_INTERFACE" ]; then
DATA_PLANE_MACVLAN_INTERFACE="$(ssh -t ubuntu@"$FQDN" ip route | grep default | cut -d " " -f 5)"
fi
# stub out the lxd init file for the remote SSH endpoint.
CLUSTER_MASTER_LXD_INIT="$LXD_REMOTE_PATH/$CLUSTER_NAME-primary.yml"
cat >"$CLUSTER_MASTER_LXD_INIT" <<EOF
config:
core.https_address: ${MGMT_PLANE_IP}:8443
core.trust_password: ${LXD_CLUSTER_PASSWORD}
images.auto_update_interval: 15
networks:
- config:
bridge.mode: fan
fan.underlay_subnet: auto
description: ss-config,${DATA_PLANE_MACVLAN_INTERFACE:-},${DISK_TO_USE:-}
name: lxdfanSS
type: ""
project: default
storage_pools: []
profiles:
- config: {}
description: "inter-vm communication across lxd hosts."
devices:
eth0:
name: eth0
network: lxdfanSS
type: nic
name: sovereign-stack
projects: []
cluster:
server_name: ${CLUSTER_NAME}
enabled: true
member_config: []
cluster_address: ""
cluster_certificate: ""
server_address: ""
cluster_password: ""
cluster_certificate_path: ""
cluster_token: ""
EOF
# configure the LXD Daemon with our preseed.
cat "$CLUSTER_MASTER_LXD_INIT" | ssh "ubuntu@$FQDN" lxd init --preseed
# not ensure the service is active on the remote host.
if wait-for-it -t 5 "$FQDN:8443"; then
# now create a remote on your local LXC client and switch to it.
# the software will now target the new cluster.
lxc remote add "$CLUSTER_NAME" "$FQDN" --password="$LXD_CLUSTER_PASSWORD" --protocol=lxd --auth-type=tls --accept-certificate
lxc remote switch "$CLUSTER_NAME"
echo "INFO: You have create a new cluster named '$CLUSTER_NAME'. Great! We switched your lxd remote to it."
fi
echo "SUCCESS: Congrats, you have created a new LXD cluster named '$CLUSTER_NAME'. We create a new lxd remote and switched your local lxd client to it."
echo " You can go inspect by running 'lxc remote list'. Your current cluster path is '$CLUSTER_DEFINITION'."
echo ""
echo "HINT: Now you can consider running 'ss-deploy'."
else
echo "ERROR: invalid command."
exit 1
fi
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