chore: Significantly restructure folder layout

This moves the various projects from "type-based" folders (such as
"services" or "tools") into more appropriate semantic folders (such as
"nix", "ops" or "web").

Deprecated projects (nixcon-demo & gotest) which only existed for
testing/demonstration purposes have been removed.

(Note: *all* builds are broken with this commit)

ops/infra/kubernetes/cgit/config.yaml

@@ -0,0 +1,73 @@
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: gcsr-secrets
+type: Opaque
+data:
+  username: "Z2l0LXRhemppbi5nbWFpbC5jb20="
+  # This credential is a GCSR 'gitcookie' token.
+  password: '{{ passLookup "gcsr-tazjin-password" | b64enc }}'
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: cgit
+  labels:
+    app: cgit
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: cgit
+  template:
+    metadata:
+      labels:
+        app: cgit
+    spec:
+      securityContext:
+        runAsUser: 1000
+        runAsGroup: 1000
+        fsGroup: 1000
+      containers:
+      - name: cgit
+        image: nixery.local/shell/services.cgit-taz:{{ gitHEAD }}
+        command: [ "cgit-launch" ]
+        env:
+          - name: HOME
+            value: /git
+        volumeMounts:
+          - name: git-volume
+            mountPath: /git
+      - name: sync-gcsr
+        image: nixery.local/shell/services.sync-gcsr:{{ gitHEAD }}
+        command: [ "sync-gcsr" ]
+        env:
+          - name: SYNC_USER
+            valueFrom:
+              secretKeyRef:
+                name: gcsr-secrets
+                key: username
+          - name: SYNC_PASS
+            valueFrom:
+              secretKeyRef:
+                name: gcsr-secrets
+                key: password
+        volumeMounts:
+          - name: git-volume
+            mountPath: /git
+      volumes:
+        - name: git-volume
+          emptyDir: {}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: cgit
+spec:
+  selector:
+    app: cgit
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 8080

ops/infra/kubernetes/gemma/config.lisp

@@ -0,0 +1,19 @@
+(config :port 4242
+        :data-dir "/var/lib/gemma/")
+
+(deftask bathroom/wipe-mirror 7)
+(deftask bathroom/wipe-counter 7)
+
+;; Bedroom tasks
+(deftask bedroom/change-sheets 7)
+(deftask bedroom/vacuum 10)
+
+;; Kitchen tasks
+(deftask kitchen/normal-trash 3)
+(deftask kitchen/green-trash 5)
+(deftask kitchen/blue-trash 5)
+(deftask kitchen/wipe-counters 3)
+(deftask kitchen/vacuum 5 "Kitchen has more crumbs and such!")
+
+;; Entire place
+(deftask clean-windows 60)

ops/infra/kubernetes/https-cert/cert.yaml

@@ -0,0 +1,8 @@
+---
+apiVersion: networking.gke.io/v1beta1
+kind: ManagedCertificate
+metadata:
+  name: {{ .domain | replace "." "-" }}
+spec:
+  domains:
+    - {{ .domain }}

ops/infra/kubernetes/https-lb/ingress.yaml

@@ -0,0 +1,35 @@
+# This resource configures the HTTPS load balancer that is used as the
+# entrypoint to all HTTPS services running in the cluster.
+---
+apiVersion: extensions/v1beta1
+kind: Ingress
+metadata:
+  name: https-ingress
+  annotations:
+    networking.gke.io/managed-certificates: tazj-in, git-tazj-in, www-tazj-in, oslo-pub
+spec:
+  rules:
+    # Route blog to the blog ...
+    - host: tazj.in
+      http:
+        paths:
+          - path: /*
+            backend:
+              serviceName: tazblog
+              servicePort: 8000
+    # Route git.tazj.in to the cgit pods
+    - host: git.tazj.in
+      http:
+        paths:
+          - path: /*
+            backend:
+              serviceName: nginx
+              servicePort: 6756
+    # Route oslo.pub to the nginx instance which serves redirects
+    - host: oslo.pub
+      http:
+        paths:
+          - path: /
+            backend:
+              serviceName: nginx
+              servicePort: 6756

ops/infra/kubernetes/nginx/nginx.conf

@@ -0,0 +1,59 @@
+daemon off;
+worker_processes  1;
+error_log stderr;
+pid /run/nginx.pid;
+
+events {
+    worker_connections  1024;
+}
+
+http {
+    log_format json_combined escape=json
+    '{'
+        '"time_local":"$time_local",'
+        '"remote_addr":"$remote_addr",'
+        '"remote_user":"$remote_user",'
+        '"request":"$request",'
+        '"status": "$status",'
+        '"body_bytes_sent":"$body_bytes_sent",'
+        '"request_time":"$request_time",'
+        '"http_referrer":"$http_referer",'
+        '"http_user_agent":"$http_user_agent"'
+        '}';
+
+    access_log /dev/stdout json_combined;
+
+    sendfile        on;
+    keepalive_timeout  65;
+
+    server {
+        listen 80 default_server;
+        location / {
+            return 200 "ok";
+        }
+    }
+
+    server {
+        listen       80;
+        server_name  oslo.pub;
+
+        location / {
+            return 302 https://www.google.com/maps/d/viewer?mid=1pJIYY9cuEdt9DuMTbb4etBVq7hs;
+        }
+    }
+
+    server {
+        listen       80;
+        server_name  git.tazj.in;
+
+        # Static assets must always hit the root.
+        location ~ ^/(favicon\.ico|cgit\.(css|png))$ {
+           proxy_pass http://cgit;
+        }
+
+        # Everything else hits the depot directly.
+        location / {
+            proxy_pass http://cgit/cgit.cgi/depot/;
+        }
+    }
+}

ops/infra/kubernetes/nginx/nginx.yaml

@@ -0,0 +1,60 @@
+# Deploy an nginx instance which serves ... redirects.
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: nginx-conf
+data:
+  nginx.conf: {{ insertFile "nginx.conf" | toJson }}
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nginx
+  labels:
+    app: nginx
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: nginx
+  template:
+    metadata:
+      labels:
+        app: nginx
+        config: {{ insertFile "nginx.conf" | sha1sum }}
+    spec:
+      containers:
+        - name: tazblog
+          image: nixery.local/shell/third_party.nginx:{{ .version }}
+          command: ["/bin/bash", "-c"]
+          args:
+            - |
+              cd /run
+              echo 'nogroup:x:30000:nobody' >> /etc/group
+              echo 'nobody:x:30000:30000:nobody:/tmp:/bin/bash' >> /etc/passwd
+              exec nginx -c /etc/nginx/nginx.conf
+          volumeMounts:
+            - name: nginx-conf
+              mountPath: /etc/nginx
+            - name: nginx-rundir
+              mountPath: /run
+      volumes:
+        - name: nginx-conf
+          configMap:
+            name: nginx-conf
+        - name: nginx-rundir
+          emptyDir: {}
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: nginx
+spec:
+  type: NodePort
+  selector:
+    app: nginx
+  ports:
+    - protocol: TCP
+      port: 6756
+      targetPort: 80

ops/infra/kubernetes/nixery/config.yaml

@@ -0,0 +1,67 @@
+# Deploys an instance of Nixery into the cluster.
+#
+# The service via which Nixery is exposed has a private DNS entry
+# pointing to it, which makes it possible to resolve `nixery.local`
+# in-cluster without things getting nasty.
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: nixery
+  namespace: kube-public
+  labels:
+    app: nixery
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: nixery
+  template:
+    metadata:
+      labels:
+        app: nixery
+    spec:
+      containers:
+      - name: nixery
+        image: eu.gcr.io/tazjins-infrastructure/nixery:{{ .version }}
+        volumeMounts:
+          - name: nixery-secrets
+            mountPath: /var/nixery
+        env:
+          - name: BUCKET
+            value: {{ .bucket}}
+          - name: PORT
+            value: "{{ .port }}"
+          - name: GOOGLE_APPLICATION_CREDENTIALS
+            value: /var/nixery/gcs-key.json
+          - name: GCS_SIGNING_KEY
+            value: /var/nixery/gcs-key.pem
+          - name: GCS_SIGNING_ACCOUNT
+            value: {{ .account }}
+          - name: GIT_SSH_COMMAND
+            value: 'ssh -F /var/nixery/ssh_config'
+          - name: NIXERY_PKGS_REPO
+            value: {{ .repo }}
+          - name: NIX_POPULARITY_URL
+            value: 'https://storage.googleapis.com/nixery-layers/popularity/{{ .popularity }}'
+      volumes:
+        - name: nixery-secrets
+          secret:
+            secretName: nixery-secrets
+            defaultMode: 256
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: nixery
+  namespace: kube-public
+  annotations:
+    cloud.google.com/load-balancer-type: "Internal"
+spec:
+  selector:
+    app: nixery
+  type: LoadBalancer
+  ports:
+  - protocol: TCP
+    port: 80
+    targetPort: 8080

ops/infra/kubernetes/nixery/id_nixery.pub

@@ -0,0 +1 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCzBM6ydst77jDHNcTFWKD9Fw4SReqyNEEp2MtQBk2wt94U4yLp8MQIuNeOEn1GaDEX4RGCxqai/2UVF1w9ZNdU+v2fXcKWfkKuGQH2XcNfXor2cVNObd40H78++iZiv3nmM/NaEdkTbTBbi925cRy9u5FgItDgsJlyKNRglCb0fr6KlgpvWjL20dp/eeZ8a/gLniHK8PnEsgERQSvJnsyFpxxVhxtoUiyLWpXDl4npf/rQr0eRDf4Q5sN/nbTwksapPHfze8dKcaoA7A2NqT3bJ6DPGrwVCzGRtGw/SXJwFwmmtAl9O6BklpeReyiknSxc+KOtrjDW6O0r6yvymD5Z nixery

ops/infra/kubernetes/nixery/known_hosts

@@ -0,0 +1,2 @@
+github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==
+140.82.118.4 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==

ops/infra/kubernetes/nixery/secrets.yaml

@@ -0,0 +1,18 @@
+# The secrets below are encrypted using keys stored in Cloud KMS and
+# templated in by kontemplate when deploying.
+#
+# Not all of the values are actually secret (see the matching)
+---
+apiVersion: v1
+kind: Secret
+metadata:
+  name: nixery-secrets
+  namespace: kube-public
+type: Opaque
+data:
+  gcs-key.json: {{ passLookup "nixery-gcs-json" | b64enc }}
+  gcs-key.pem: {{ passLookup "nixery-gcs-pem" | b64enc }}
+  id_nixery: {{ printf "%s\n" (passLookup "nixery-ssh-private") | b64enc }}
+  id_nixery.pub: {{ insertFile "id_nixery.pub" | b64enc }}
+  known_hosts: {{ insertFile "known_hosts" | b64enc }}
+  ssh_config: {{ insertFile "ssh_config" | b64enc }}

ops/infra/kubernetes/nixery/ssh_config

@@ -0,0 +1,4 @@
+Match host *
+      User tazjin@google.com
+      IdentityFile /var/nixery/id_nixery
+      UserKnownHostsFile /var/nixery/known_hosts

ops/infra/kubernetes/primary-cluster.yaml

@@ -0,0 +1,38 @@
+# Kontemplate configuration for the primary GKE cluster in the project
+# 'tazjins-infrastructure'.
+---
+context: gke_tazjins-infrastructure_europe-north1_tazjin-cluster
+include:
+  # SSL certificates (provisioned by Google)
+  - name: tazj-in-cert
+    path: https-cert
+    values:
+      domain: tazj.in
+  - name: www-tazj-in-cert
+    path: https-cert
+    values:
+      domain: www.tazj.in
+  - name: git-tazj-in-cert
+    path: https-cert
+    values:
+      domain: git.tazj.in
+  - name: oslo-pub-cert
+    path: https-cert
+    values:
+      domain: oslo.pub
+
+  # Services
+  - name: nixery
+    values:
+      port: 8080
+      version: xkm36vrbcnzxdccybzdrx4qzfcfqfrhg
+      bucket: tazjins-data
+      account: nixery@tazjins-infrastructure.iam.gserviceaccount.com
+      repo: ssh://tazjin@gmail.com@source.developers.google.com:2022/p/tazjins-infrastructure/r/depot
+      popularity: 'popularity-nixos-unstable-3140fa89c51233397f496f49014f6b23216667c2.json'
+  - name: tazblog
+  - name: cgit
+  - name: https-lb
+  - name: nginx
+    values:
+      version: a349d5e9145ae9a6c89f62ec631f01fb180de546

ops/infra/kubernetes/tazblog/config.yaml

@@ -0,0 +1,34 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: tazblog
+  labels:
+    app: tazblog
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: tazblog
+  template:
+    metadata:
+      labels:
+        app: tazblog
+    spec:
+      containers:
+      - name: tazblog
+        image: nixery.local/shell/services.tazblog:{{ gitHEAD }}
+        command: [ "tazblog" ]
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: tazblog
+spec:
+  type: NodePort
+  selector:
+    app: tazblog
+  ports:
+    - protocol: TCP
+      port: 8000
+      targetPort: 8000