Error pages

Re coop-cloud/organising#115

.drone.yml

@@ -3,10 +3,12 @@ kind: pipeline
 name: deploy to swarm-test.autonomic.zone
 steps:
   - name: deployment
-    image: decentral1se/stack-ssh-deploy:latest
+    image: git.coopcloud.tech/coop-cloud/stack-ssh-deploy:latest
     settings:
       host: swarm-test.autonomic.zone
       stack: traefik
+      networks:
+       - proxy
       deploy_key:
         from_secret: drone_ssh_swarm_test
     environment:
@@ -22,11 +24,17 @@ trigger:
     - master
 ---
 kind: pipeline
-name: recipe release
+name: generate recipe catalogue
 steps:
   - name: release a new version
-    image: thecoopcloud/drone-abra:latest
+    image: plugins/downstream
     settings:
-      command: recipe traefik release
-      deploy_key:
-        from_secret: abra_bot_deploy_key
+      server: https://build.coopcloud.tech
+      token:
+        from_secret: drone_abra-bot_token
+      fork: true
+      repositories:
+        - coop-cloud/auto-recipes-catalogue-json
+
+trigger:
+  event: tag

.env.sample

@@ -1,4 +1,6 @@
 TYPE=traefik
+TIMEOUT=300
+ENABLE_AUTO_UPDATE=true
 
 DOMAIN=traefik.example.com
 LETS_ENCRYPT_ENV=production
@@ -45,7 +47,20 @@ COMPOSE_FILE="compose.yml"
 #SECRET_GANDIV5_API_KEY_VERSION=v1
 
 #####################################################################
-# Keycloak log-in                                                   #
+# Manual wildcard certificate insertion                             #
+#####################################################################
+
+# Set wildcards = 1, and uncomment compose_file to enable.
+# Create your certs elsewhere and add them like:
+# abra app secrets insert {myapp.example.coop} ssl_cert v1 "$(cat /path/to/fullchain.pem)"
+# abra app secrets insert {myapp.example.coop} ssl_key v1 "$(cat /path/to/privkey.pem)"
+#WILDCARDS_ENABLED=1
+#SECRET_WILDCARD_CERT_VERSION=v1
+#SECRET_WILDCARD_KEY_VERSION=v1
+#COMPOSE_FILE="$COMPOSE_FILE:compose.wildcard.yml"
+
+#####################################################################
+# Authentication                                                    #
 #####################################################################
 
 ## Enable Keycloak
@@ -55,14 +70,27 @@ COMPOSE_FILE="compose.yml"
 #KEYCLOAK_MIDDLEWARE_2_ENABLED=1
 #KEYCLOAK_TFA_SERVICE_2=traefik-forward-auth_app
 
+## BASIC_AUTH
+## Use httpasswd to generate the secret
+#COMPOSE_FILE="$COMPOSE_FILE:compose.basicauth.yml"
+#BASIC_AUTH=1
+#SECRET_USERSFILE_VERSION=v1
+
 #####################################################################
 # Prometheus metrics                                                #
 #####################################################################
 
 ## Enable prometheus metrics collection
 ## used used by the coop-cloud monitoring stack
+#COMPOSE_FILE="$COMPOSE_FILE:compose.metrics.yml"
 #METRICS_ENABLED=1
 
+#####################################################################
+# File provider directory configuration                             #
+# (Route bare metal and non-docker services on the machine!)        #
+#####################################################################
+#FILE_PROVIDER_DIRECTORY_ENABLED=1
+
 #####################################################################
 # Additional services                                               #
 #####################################################################
@@ -102,3 +130,8 @@ COMPOSE_FILE="compose.yml"
 ## Matrix
 #COMPOSE_FILE="$COMPOSE_FILE:compose.matrix.yml"
 #MATRIX_FEDERATION_ENABLED=1
+
+## "Web alt", an alternative web port
+# NOTE(3wc): as of 2024-04-01 only the `icecast` recipe uses this
+#COMPOSE_FILE="$COMPOSE_FILE:compose.web-alt.yml"
+#WEB_ALT_ENABLED=1

README.md

@@ -19,8 +19,29 @@
 
 1. Set up Docker Swarm and [`abra`]
 2. `abra app new traefik`
-3. `abra app YOURAPPDOMAIN config` - be sure to change `DOMAIN` to something that resolves to
+3. `abra app config YOURAPPDOMAIN` - be sure to change `DOMAIN` to something that resolves to
    your Docker swarm box
 4. `abra app deploy YOURAPPDOMAIN`
 
+## Configuring wildcard SSL using DNS
+
+Automatic certificate generation will Just Work™ for most recipes  which use a fixed
+number of subdomains. For some recipes which need to work across arbitrary
+subdomains, like
+[`federatedwiki`](https://git.coopcloud.tech/coop-cloud/federatedwiki/) and
+[`go-ssb-room`](https://git.coopcloud.tech/coop-cloud/federatedwiki/), you'll
+need to give Traefik access to your DNS provider so that it can carry out
+Letsencrypt DNS challenges.
+
+1. Use Gandi or OVH for DNS 🤡 (support for other providers can be easily added,
+   see [the `lego` docs](https://go-acme.github.io/lego/dns/#dns-providers).
+2. Run `abra app config YOURAPPDOMAIN`
+3. Uncomment e.g. `ENABLE_GANDI` and the related `SECRET_.._VERSION` line, e.g.
+   `SECRET_GANDIV5_API_KEY_VERSION`
+4. Generate an API key for your provider
+5. Run `abra app secret insert YOURAPPDOMAIN SECRETNAME v1 SECRETVALUE`, where
+   `SECRETNAME` is from the compose file (e.g. `compose.gandi.yml`) e.g.
+   `gandiv5_api_key` and `SECRETVALUE` is the API key.
+6. Redeploy Traefik, using e.g. `abra app deploy YOURAPPDOMAIN -f`
+
 [`abra`]: https://git.autonomic.zone/autonomic-cooperative/abra

abra.sh

@@ -1,3 +1,3 @@
-export TRAEFIK_YML_VERSION=v15
-export FILE_PROVIDER_YML_VERSION=v6
+export TRAEFIK_YML_VERSION=v20
+export FILE_PROVIDER_YML_VERSION=v10
 export ENTRYPOINT_VERSION=v2

compose.basicauth.yml

@@ -0,0 +1,12 @@
+version: "3.8"
+services:
+  app:
+    environment:
+      - BASIC_AUTH
+    secrets:
+      - usersfile
+
+secrets:
+  usersfile:
+    name: ${STACK_NAME}_usersfile_${SECRET_USERSFILE_VERSION}
+    external: true

compose.errors.yml

@@ -0,0 +1,29 @@
+---
+version: "3.8"
+
+services:
+  app:
+    environment:
+      - "CUSTOM_ERRORS=1"
+    volumes:
+      - "traefik-plugins:/plugins-local/"
+  errors:
+    image: "tarampampam/error-pages:2.27.0"
+    networks:
+      - proxy
+    deploy:
+      labels:
+          - "traefik.enable=true"
+          # use as "fallback" for any non-registered services (with priority below normal)
+          - "traefik.http.routers.${STACK_NAME}-error.rule=HostRegexp(`{host:.+}`)"
+          - "traefik.http.routers.${STACK_NAME}-error.priority=10"
+          - "traefik.http.routers.${STACK_NAME}-error.entrypoints=web-secure"
+          - "traefik.http.routers.${STACK_NAME}-error.tls.certresolver=${LETS_ENCRYPT_ENV}"
+          - "traefik.http.services.${STACK_NAME}-error.loadbalancer.server.port=8080"
+          # "errors" middleware settings
+          - "traefik.http.middlewares.${STACK_NAME}-error.errors.status=400-599"
+          - "traefik.http.middlewares.${STACK_NAME}-error.errors.service=${STACK_NAME}-error"
+          - "traefik.http.middlewares.${STACK_NAME}-error.errors.query=/{status}.html"
+
+volumes:
+  traefik-plugins:

compose.metrics.yml

@@ -0,0 +1,9 @@
+version: "3.8"
+services:
+  app:
+    environment:
+      - METRICS_ENABLED
+    ports:
+      - target: 8082
+        published: 8082
+        mode: host

compose.web-alt.yml

@@ -0,0 +1,7 @@
+version: "3.8"
+services:
+  app:
+    environment:
+      - WEB_ALT_ENABLED
+    ports:
+      - "8000:8000"

compose.wildcard.yml

@@ -0,0 +1,16 @@
+---
+version: "3.8"
+
+services:
+  app:
+    secrets:
+      - ssl_cert
+      - ssl_key
+
+secrets:
+  ssl_cert:
+    name: ${STACK_NAME}_ssl_cert_${SECRET_WILDCARD_CERT_VERSION}
+    external: true
+  ssl_key:
+    name: ${STACK_NAME}_ssl_key_${SECRET_WILDCARD_KEY_VERSION}
+    external: true

compose.yml

@@ -3,7 +3,7 @@ version: "3.8"
 
 services:
   app:
-    image: "traefik:v2.9.5"
+    image: "traefik:v2.11.0"
     # Note(decentral1se): *please do not* add any additional ports here.
     # Doing so could break new installs with port conflicts. Please use
     # the usual `compose.$app.yml` approach for any additional ports
@@ -13,6 +13,7 @@ services:
     volumes:
       - "/var/run/docker.sock:/var/run/docker.sock"
       - "letsencrypt:/etc/letsencrypt"
+      - "file-providers:/etc/traefik/file-providers"
     configs:
       - source: traefik_yml
         target: /etc/traefik/traefik.yml
@@ -44,10 +45,10 @@ services:
         - "traefik.http.routers.${STACK_NAME}.rule=Host(`${DOMAIN}`)"
         - "traefik.http.routers.${STACK_NAME}.entrypoints=web-secure"
         - "traefik.http.routers.${STACK_NAME}.tls.certresolver=${LETS_ENCRYPT_ENV}"
-        - "traefik.http.routers.${STACK_NAME}.tls.options=default@file"
         - "traefik.http.routers.${STACK_NAME}.service=api@internal"
         - "traefik.http.routers.${STACK_NAME}.middlewares=security@file"
-        - "coop-cloud.${STACK_NAME}.version=2.0.2+v2.9.5"
+        - "coop-cloud.${STACK_NAME}.version=2.6.0+v2.11.0"
+        - "coop-cloud.${STACK_NAME}.timeout=${TIMEOUT:-120}"
 
 networks:
   proxy:
@@ -69,3 +70,4 @@ configs:
 
 volumes:
   letsencrypt:
+  file-providers:

file-provider.yml.tmpl

@@ -1,6 +1,19 @@
 ---
+
 http:
   middlewares:
+    {{ if eq (env "CUSTOM_ERRORS") "1" }}
+    error:
+      plugin:
+        traefik-error-page:
+          debug: "true"
+          contentsOnly: "false"
+          contentsOnlyMatch: "Bad Gateway"
+          query: /{status}.html
+          service: http://{{ env "STACK_NAME" }}_errors:8080
+          status:
+            - 502
+    {{ end }}
     {{ if eq (env "KEYCLOAK_MIDDLEWARE_ENABLED") "1" }}
     keycloak:
       forwardAuth:
@@ -17,10 +30,14 @@ http:
         authResponseHeaders:
           - X-Forwarded-User
     {{ end }}
+    {{ if eq (env "BASIC_AUTH") "1" }}
+    basicauth:
+      basicAuth:
+        usersFile: "/run/secrets/usersfile"
+    {{ end }}
     security:
       headers:
         frameDeny: true
-        sslRedirect: true
         browserXssFilter: true
         contentTypeNosniff: true
         stsIncludeSubdomains: true
@@ -40,3 +57,8 @@ tls:
         - CurveP521
         - CurveP384
       sniStrict: true
+  {{ if eq (env "WILDCARDS_ENABLED") "1" }}
+  certificates:
+    - certFile: /run/secrets/ssl_cert
+      keyFile: /run/secrets/ssl_key
+  {{ end }}

traefik.yml.tmpl

@@ -8,8 +8,14 @@ providers:
     exposedByDefault: false
     network: proxy
     swarmMode: true
+  {{ if eq (env "FILE_PROVIDER_DIRECTORY_ENABLED") "1" }}
+  file:
+    directory: /etc/traefik/file-providers
+    watch: true
+  {{ else }}
   file:
     filename: /etc/traefik/file-provider.yml
+  {{ end }}
 
 api:
   dashboard: {{ env "DASHBOARD_ENABLED" }}
@@ -18,10 +24,6 @@ api:
 entrypoints:
   web:
     address: ":80"
-    http:
-      redirections:
-        entryPoint:
-          to: web-secure
   web-secure:
     address: ":443"
   {{ if eq (env "GITEA_SSH_ENABLED") "1" }}
@@ -40,6 +42,10 @@ entrypoints:
   peertube-rtmp:
     address: ":1935"
   {{ end }}
+  {{ if eq (env "WEB_ALT_ENABLED") "1" }}
+  web-alt:
+    address: ":8000"
+  {{ end }}
   {{ if eq (env "SSB_MUXRPC_ENABLED") "1" }}
   ssb-muxrpc:
     address: ":8008"
@@ -61,6 +67,9 @@ entrypoints:
   {{ if eq (env "METRICS_ENABLED") "1" }}
   metrics:
     address: ":8082"
+    http:
+      middlewares:
+        - basicauth@file
   {{ end }}
   {{ if eq (env "MATRIX_FEDERATION_ENABLED") "1" }}
   matrix-federation:
@@ -74,6 +83,8 @@ ping:
 metrics:
   prometheus:
     entryPoint: metrics
+    addRoutersLabels: true
+    addServicesLabels: true
 {{ end }}
 
 certificatesResolvers:
@@ -104,3 +115,10 @@ certificatesResolvers:
           - "1.1.1.1:53"
           - "9.9.9.9:53"
       {{ end }}
+
+{{ if eq (env "CUSTOM_ERRORS") "1" }}
+experimental:
+  localplugins:
+    traefik-error-page:
+      moduleName: "github.com/3-w-c/traefik-error-page"
+{{ end }}