README tweaks

.gitignore

@@ -1 +1,2 @@
 certs/
+*.log

Caddyfile

@@ -7,7 +7,9 @@
         protocols tls1.3
         client_auth {
             mode require_and_verify
-            trusted_ca_cert_file /certs/root_ca.crt
+            trust_pool file {
+                pem_file /certs/root_ca.crt
+            }
         }
     }
     reverse_proxy rest-server:8000

README.md

@@ -16,7 +16,8 @@ Connect solely through wireguard to `192.168.1.142` and serve the REST server wi
 
 ## Restic Repos
 
-`/etc/fstab` entry:
+`/etc/fstab` entry on Proxmox host:
+
 ```
 john-nas:/volume1/restic  /mnt/nfs/restic  nfs  nofail,_netdev,x-systemd.automount,x-systemd.idle-timeout=600,timeo=14,retrans=3,hard,tcp,nfsvers=3  0  0
 ```
@@ -36,27 +37,41 @@ pct set 103 -mp0 /mnt/nfs/restic,mp=/mnt/restic
 Generate a new private key and (public) certificate in the right places. This will use the `admin` provisioner.
 
 ```
-step ca certificate soteria.john-stream.com certs/soteria.crt certs/soteria.key --provisioner admin
+export HOSTNAME=$(hostname -s) && \
+export DOMAIN="john-stream.com" && \
+export CERT_DIR="/var/lib/tls" && \
+export IP_ADDRESS=$(ip -4 addr show dev eth0 | awk '/inet /{print $2}' | cut -d/ -f1)
+```
+
+```
+(umask 077; mkdir -p "$CERT_DIR") && cd "$CERT_DIR" && \
+step ca root root_ca.crt && \
+step ca certificate "$HOSTNAME" cert.pem key.pem \
+    --san "$HOSTNAME" \
+    --san "$HOSTNAME.$DOMAIN" \
+    --san "$IP_ADDRESS" \
+    --san spiffe://john-stream.com/role/docker-agent \
+    --provisioner admin
+```
+
+Convert the key for Envoy to use:
+
+```
+(umask 027; openssl pkcs8 -topk8 -nocrypt -in key.pem -out key_pkcs8.pem)
 ```
 
 Check the resultant certificate:
 
 ```
-openssl x509 -noout -subject -issuer -ext extendedKeyUsage -ext subjectAltName -in certs/soteria.crt
+openssl x509 -noout -subject -issuer -ext extendedKeyUsage,subjectAltName -in /var/lib/tls/cert.pem
 ```
 
-Set up renewal
+## Envoy Proxy
 
-```bash
-sudo ./scripts/install_services.sh
-```
-
-Test renewal
-
-```
-systemctl start cert-renewer.service && \
-systemctl status cert-renewer.service --no-pager && \
+Validate config:
 
+```shell
+docker compose run -it --rm envoy --mode validate -c /etc/envoy/envoy.yaml
 ```
 
 ## Clients
@@ -71,30 +86,37 @@ curl -sL https://gitea.john-stream.com/john/soteria/raw/branch/main/scripts/setu
 curl -sL https://gitea.john-stream.com/john/soteria/raw/branch/main/scripts/check_status.sh | bash
 ```
 
+```bash
+curl -sL https://gitea.john-stream.com/john/soteria/raw/branch/main/scripts/wizard_setup.sh | bash
+```
+
 ### Manual Setup
 
 Set up provisioner password by running this and pasting in the current JWK provisioner password for `admin`
 
 ```
-read -s secret && (umask 077; echo "$secret" > $(step path)/certs/secret.txt)
-```
-
-Generate the client TLS private key and (public) certificate for mTLS. This will combine them both into a file called `restic.pem`, which can be used with the `--tls-client-cert` option with the restic CLI.
-
-```
-cd $(step path)/certs && \
-step ca certificate \
-    --provisioner admin --password-file secret.txt \
-    $(hostnamectl hostname) restic.crt restic.key && \
-(umask 077; cat restic.crt restic.key > restic.pem)
+export HOSTNAME=$(hostname -s) && \
+export DOMAIN="john-stream.com" && \
+export CERT_DIR="/var/lib/tls" && \
+export IP_ADDRESS=$(ip -4 addr show dev eth0 | awk '/inet /{print $2}' | cut -d/ -f1) && \
+(umask 077; mkdir -p "$CERT_DIR" && cd "$CERT_DIR" && \
+step ca root root_ca.crt && \
+step ca certificate "$HOSTNAME" cert.pem key.pem \
+    --san "$HOSTNAME" \
+    --san "$HOSTNAME.$DOMAIN" \
+    --san "$IP_ADDRESS" \
+    --san spiffe://john-stream.com/role/docker-agent \
+    --provisioner admin && \
+cat {cert,key}.pem > restic.pem) && \
+chmod 644 cert.pem root_ca.crt
 ```
 
 Need restic 0.16+ for the env vars `RESTIC_CACERT` and `RESTIC_TLS_CLIENT_CERT` to work.
 
 ```
-export RESTIC_CACERT=$(step path)/certs/root_ca.crt
-export RESTIC_TLS_CLIENT_CERT=$(step path)/certs/restic.pem
-export RESTIC_REPOSITORY=rest:https://soteria.john-stream.com/john-ubuntu
+export RESTIC_CACERT=$(step path)/certs/root_ca.crt && \
+export RESTIC_TLS_CLIENT_CERT=$(step path)/certs/restic.pem && \
+export RESTIC_REPOSITORY=rest:https://soteria.john-stream.com/john-ubuntu && \
 export RESTIC_PASSWORD_FILE=$(readlink -f ~/.config/resticprofile/password.txt)
 ```
 
@@ -106,6 +128,8 @@ restic snapshots
 
 ### Installing Latest Binary
 
+Do this in case the restic version from apt is too old.
+
 ```
 curl -s https://api.github.com/repos/restic/restic/releases/latest | grep tag_name
 ```

docker-compose.yml

@@ -8,16 +8,16 @@ services:
     environment:
       OPTIONS: --no-auth
 
-  caddy:
-    image: caddy:alpine
-    container_name: caddy
+  envoy:
+    image: envoyproxy/envoy:v1.33-latest
+    user: root
+    container_name: envoy
     restart: unless-stopped
     ports:
-      - "443:443"
+      - "443:10000"
     volumes:
-      - ./Caddyfile:/etc/caddy/Caddyfile:ro
-      - ./certs/soteria.crt:/certs/soteria.crt:ro
-      - ./certs/soteria.key:/certs/soteria.key:ro
-      - ${HOME}/.step/certs/root_ca.crt:/certs/root_ca.crt:ro
+      - ./envoy.yaml:/etc/envoy/envoy.yaml:ro
+      - /var/lib/tls:/certs
+      - ./access.log:/var/log/envoy/access.log
     depends_on:
       - rest-server

envoy.yaml

@@ -0,0 +1,122 @@
+static_resources:
+  # --8<-- [start:listener]
+  listeners:
+  - name: listener_0
+    address:
+      socket_address:
+        address: 0.0.0.0
+        port_value: 10000
+    # --8<-- [end:listener]
+    filter_chains:
+    - filter_chain_match:
+        server_names: ["*.john-stream.com"]
+    # --8<-- [start:transport_socket]
+    - transport_socket:
+        name: envoy.transport_sockets.tls
+        typed_config:
+          "@type": type.googleapis.com/envoy.extensions.transport_sockets.tls.v3.DownstreamTlsContext
+          require_client_certificate: true
+          common_tls_context:
+            tls_params:
+              tls_minimum_protocol_version: TLSv1_3 # (1)!
+            validation_context:
+              trusted_ca: { filename: /certs/root_ca.crt }
+              match_typed_subject_alt_names:
+              - san_type: URI
+                matcher:
+                  prefix: spiffe://john-stream.com # (2)!
+            tls_certificates:
+            - certificate_chain: { filename: /certs/cert.pem }
+              private_key: { filename: /certs/key_pkcs8.pem } # (3)!
+      # --8<-- [end:transport_socket]
+      filters:
+      - name: envoy.filters.network.http_connection_manager
+        typed_config:
+          "@type": type.googleapis.com/envoy.extensions.filters.network.http_connection_manager.v3.HttpConnectionManager
+          stat_prefix: ingress_http
+          use_remote_address: true
+          http2_protocol_options:
+            max_concurrent_streams: 100
+          # --8<-- [start:access_log]
+          access_log:
+          - name: envoy.access_loggers.file
+            typed_config:
+              "@type": type.googleapis.com/envoy.extensions.access_loggers.file.v3.FileAccessLog
+              path: "/var/log/envoy/access.log"
+          # --8<-- [end:access_log]
+          # --8<-- [start:cluster_route]
+          route_config:
+            name: local_route
+            virtual_hosts:
+            - name: local_service
+              domains: ["*"]
+              routes:
+              - match:
+                  prefix: "/"
+                route:
+                  cluster: restic
+          # --8<-- [end:cluster_route]
+          http_filters:
+          # --8<-- [start:rbac]
+          - name: envoy.filters.http.rbac
+            typed_config:
+              "@type": type.googleapis.com/envoy.extensions.filters.http.rbac.v3.RBAC
+              rules:
+                action: ALLOW
+                policies:
+                  "ubuntu-policy":
+                    permissions:
+                      - and_rules:
+                          rules:
+                            - header:
+                                name: ":path"
+                                string_match:
+                                  prefix: "/john-ubuntu"
+                    principals:
+                      - authenticated:
+                          principal_name:
+                            exact: "spiffe://john-stream.com/ubuntu"
+                  "p14-policy":
+                    permissions:
+                      - and_rules:
+                          rules:
+                            - header:
+                                name: ":path"
+                                string_match:
+                                  prefix: "/john-p14s"
+                    principals:
+                      - authenticated:
+                          principal_name:
+                            exact: "spiffe://john-stream.com/john-p14s"
+                  "gitea-policy":
+                    permissions:
+                      - and_rules:
+                          rules:
+                            - header:
+                                name: ":path"
+                                string_match:
+                                  prefix: "/gitea"
+                    principals:
+                      - authenticated:
+                          principal_name:
+                            exact: "spiffe://john-stream.com/gitea"
+          # --8<-- [end:rbac]
+          - name: envoy.filters.http.router
+            typed_config:
+              "@type": type.googleapis.com/envoy.extensions.filters.http.router.v3.Router
+  # --8<-- [start:cluster]
+  clusters:
+  - name: restic
+    connect_timeout: 0.25s
+    type: STRICT_DNS
+    lb_policy: ROUND_ROBIN
+    load_assignment:
+      cluster_name: restic
+      endpoints:
+      - lb_endpoints:
+        - endpoint:
+            address:
+              socket_address:
+                address: rest-server
+                port_value: 8000
+  # --8<-- [end:cluster]

scripts/check_status.sh

@@ -22,9 +22,9 @@ print_status() {
 
 EXIT_CODE=0
 
-CERTS_DIR="$(readlink -f ~/.step/certs)"
-SERVER_CERT="$CERTS_DIR/restic.crt"
-SERVER_KEY="$CERTS_DIR/restic.key"
+CERTS_DIR="/var/lib/tls"
+SERVER_CERT="$CERTS_DIR/cert.pem"
+SERVER_KEY="$CERTS_DIR/key.pem"
 TIMER_NAME="cert-renewer.timer"
 
 # 1. Check Certificates Existence

scripts/setup_wizard.sh

@@ -102,8 +102,15 @@ install_unit() {
     local filename=$(basename "$template_url")
     local dest_path=/etc/systemd/system/"$filename"
 
-    log_info "Installing $filename..."
+    if [ -e "$dest_path" ]; then
+        get_input "CONFIRM_OVERWRITE" "Overwrite $dest_path? (y/n)" "y" "false"
+        if [[ "${CONFIRM_OVERWRITE,,}" != "y" ]]; then
+            echo "Skipping overwrite of ${dest_path}."
+            return
+        fi
+    fi
 
+    log_info "Installing $filename..."
     curl -sL $template_url | envsubst > "$dest_path"
     log_success "$filename installed to $dest_path"
 }
@@ -115,31 +122,75 @@ install_unit() {
 echo "Starting Interactive Setup..."
 echo "-----------------------------"
 
-# 1. Collect Inputs
-# Example:
-get_input "HOST_NAME" "Enter Hostname" "$(hostname)" "false"
-get_input "CERT_DIR" "Enter directory for certificates" "$(step path)/certs" "false"
-get_input "CERT_LOCATION" "Enter specific path for cert" "${CERT_DIR}/${HOSTNAME}.crt" "false"
-get_input "KEY_LOCATION" "Enter specific path for private key" "${CERT_DIR}/${HOSTNAME}.key" "false"
+# Verify required external binaries
+if ! command -v step >/dev/null 2>&1; then
+    # Prompt the user to install the step CLI
+    get_input "INSTALL_STEP" "The 'step' CLI was not found. Install now? (y/n)" "y" "false"
 
-export CERT_LOCATION=$(readlink -f $CERT_LOCATION)
-export KEY_LOCATION=$(readlink -f $KEY_LOCATION)
+    if [[ "${INSTALL_STEP,,}" == "y" ]]; then
+        apt-get update && apt-get install -y --no-install-recommends curl vim gpg ca-certificates
+        curl -fsSL https://packages.smallstep.com/keys/apt/repo-signing-key.gpg -o /etc/apt/trusted.gpg.d/smallstep.asc && \
+            echo 'deb [signed-by=/etc/apt/trusted.gpg.d/smallstep.asc] https://packages.smallstep.com/stable/debian debs main' \
+            | tee /etc/apt/sources.list.d/smallstep.list
+        apt-get update && apt-get -y install step-cli step-ca
+    else
+        log_error "Cannot continue without 'step'. Aborting." >&2
+        exit 1
+    fi
+else
+    log_success "Step CA installed\n"
+fi
+
+get_input "CERT_DIR" "Enter directory for certificates" "/var/lib/tls" "false"
+get_input "CERT_FILENAME" "Name for cert file" "cert.pem" "false"
+get_input "KEY_FILENAME" "Name for private key" "key.pem" "false"
+get_input "SPIFFE" "SPIFFE identity" "node" "false"
+
+
+if [ ! -e "$CERT_DIR" ]; then
+    (umask 077; mkdir -p "${CERT_DIR}")
+    log_info "Created ${CERT_DIR}"
+fi
+
+# These need to get set so that they get filled into the service correctly.
+export CERT_LOCATION=$(readlink -f ${CERT_DIR}/$CERT_FILENAME)
+export KEY_LOCATION=$(readlink -f ${CERT_DIR}/$KEY_FILENAME)
 
-# 2. Confirm
 confirm_inputs "CERT_LOCATION" "KEY_LOCATION"
 
-# 3. Configure
-REPO_URL_BASE=https://gitea.john-stream.com/john/soteria/raw/branch/main/
-SERVICE_TEMPLATE_URL="${REPO_URL_BASE}systemd/cert-renewer.service"
-TIMER_TEMPLATE_URL="${REPO_URL_BASE}systemd/cert-renewer.timer"
+if [ ! -e "${CERT_DIR}/root_ca.crt" ]; then
+    step ca root "${CERT_DIR}/root_ca.crt"
+fi
 
-# 3. Execute
-# echo "Configuring $HOST_NAME..."
+if [ ! -f "$CERT_LOCATION" ] || [ ! -f "$KEY_LOCATION" ]; then
+    hostname=$(hostname -s)
+    ip_address=$(ip -4 addr show dev eth0 | awk '/inet /{print $2}' | cut -d/ -f1)
+    step ca certificate "$hostname" \
+        "${CERT_DIR}/cert.pem" "${CERT_DIR}/key.pem" \
+        --san "$hostname" \
+        --san "$hostname.john-stream.com" \
+        --san "$ip_address" \
+        --san "spiffe://john-stream.com/$SPIFFE" \
+        --provisioner admin
+fi
+
+echo "" >&2
+echo -e "${GREEN}=== Cert information ===${NC}" >&2
+openssl x509 -noout -subject -issuer -ext extendedKeyUsage,subjectAltName -enddate -in "$CERT_LOCATION"
+
+SERVICE_FILE="cert-renewer.service"
+TIMER_FILE="cert-renewer.timer"
+REPO_URL_BASE=https://gitea.john-stream.com/john/soteria/raw/branch/main/
+SERVICE_TEMPLATE_URL="${REPO_URL_BASE}systemd/${SERVICE_FILE}"
+TIMER_TEMPLATE_URL="${REPO_URL_BASE}systemd/${TIMER_FILE}"
+
+echo "" >&2
+echo -e "${GREEN}=== Installing rotation services ===${NC}" >&2
 install_unit ${SERVICE_TEMPLATE_URL}
 install_unit ${TIMER_TEMPLATE_URL}
 
+echo "" >&2
+echo -e "${GREEN}=== Reloading services ===${NC}" >&2
 systemctl daemon-reload
-systemctl enable --now "$(basename "${TIMER_TEMPLATE_URL}")"
-
-systemctl status "$(basename "${SERVICE_TEMPLATE_URL}")" --no-pager
-systemctl status "$(basename "${TIMER_TEMPLATE_URL}")" --no-pager
+systemctl enable --now "${TIMER_FILE}" "${SERVICE_FILE}"
+systemctl list-unit-files $SERVICE_FILE $TIMER_FILE

systemd/cert-renewer.service

@@ -3,22 +3,18 @@ Description=Certificate renewal
 After=network-online.target
 Documentation=https://smallstep.com/docs/step-ca/certificate-authority-server-production
 StartLimitIntervalSec=0
-; PartOf=cert-renewer.target
 
 [Service]
 Type=oneshot
 User=root
 
-; ExecCondition checks if the certificate is ready for renewal,
-; based on the exit status of the command.
-; (In systemd <242, you can use ExecStartPre= here.)
-ExecCondition=/usr/bin/step certificate needs-renewal ${CERT_LOCATION}
+; ExecCondition checks if the certificate is ready for renewal.
+; ExecCondition=/usr/bin/step certificate needs-renewal ${CERT_LOCATION}
 
-; ExecStart renews the certificate, if ExecStartPre was successful.
+; ExecStart renews the certificate, if ExecCondition was successful.
 ExecStart=/usr/bin/step ca renew --force ${CERT_LOCATION} ${KEY_LOCATION}
 
-; ExecStartPost=/usr/bin/openssl x509 -noout -enddate -in ${CERT_LOCATION}
-; ExecStartPost=/usr/bin/docker exec caddy caddy reload --config /etc/caddy/Caddyfile
+ExecStartPost=/usr/bin/openssl x509 -noout -subject -issuer -enddate -in ${CERT_LOCATION}
 
 [Install]
 WantedBy=multi-user.target