nixos-servers/kubenix-modules/paperless.nix

{
  kubernetes.resources = {
    secrets = {
      database.stringData.password = "ref+sops://secrets/kubernetes.yaml#/paperless/databasePassword";
      server.stringData.secretKey = "ref+sops://secrets/kubernetes.yaml#/paperless/secretKey";
    };

    deployments = {
      server.spec = {
        selector.matchLabels = {
          app = "paperless";
          component = "web";
        };

        strategy = {
          type = "RollingUpdate";

          rollingUpdate = {
            maxSurge = 0;
            maxUnavailable = 1;
          };
        };

        template = {
          metadata.labels = {
            app = "paperless";
            component = "web";
          };

          spec = {
            volumes.data.persistentVolumeClaim.claimName = "data";

            containers.paperless = {
              image = "ghcr.io/paperless-ngx/paperless-ngx:2.3";
              imagePullPolicy = "Always";
              ports.web.containerPort = 8000;

              env = {
                PAPERLESS_REDIS.value = "redis://redis.paperless.svc.cluster.local:6379";
                PAPERLESS_DBENGINE.value = "postgresql";
                PAPERLESS_DBHOST.value = "database.paperless.svc.cluster.local";
                PAPERLESS_DBNAME.value = "paperless";
                PAPERLESS_DBUSER.value = "paperless";
                PAPERLESS_DATA_DIR.value = "/data/";
                PAPERLESS_MEDIA_ROOT.value = "/data/";
                PAPERLESS_OCR_LANGUAGES.value = "nld eng";
                PAPERLESS_URL.value = "https://paperless.kun.is";
                PAPERLESS_TIME_ZONE.value = "Europe/Amsterdam";
                PAPERLESS_OCR_LANGUAGE.value = "nld";
                USERMAP_UID.value = "33";
                USERMAP_GID.value = "33";

                PAPERLESS_DBPASS.valueFrom.secretKeyRef = {
                  name = "database";
                  key = "password";
                };

                PAPERLESS_SECRET_KEY.valueFrom.secretKeyRef = {
                  name = "server";
                  key = "secretKey";
                };
              };

              volumeMounts = [{
                name = "data";
                mountPath = "/data";
              }];
            };

            securityContext = {
              fsGroup = 33;
              fsGroupChangePolicy = "OnRootMismatch";
            };
          };
        };
      };

      redis.spec = {
        selector.matchLabels = {
          app = "paperless";
          component = "redis";
        };

        strategy = {
          type = "RollingUpdate";

          rollingUpdate = {
            maxSurge = 0;
            maxUnavailable = 1;
          };
        };

        template = {
          metadata.labels = {
            app = "paperless";
            component = "redis";
          };

          spec = {
            volumes.data.persistentVolumeClaim.claimName = "redisdata";

            containers.redis = {
              image = "docker.io/library/redis:7";
              ports.redis.containerPort = 6379;
              imagePullPolicy = "Always";

              volumeMounts = [{
                name = "data";
                mountPath = "/data";
              }];
            };

            securityContext = {
              fsGroup = 999;
              fsGroupChangePolicy = "OnRootMismatch";
            };
          };
        };
      };

      database.spec = {
        selector.matchLabels = {
          app = "paperless";
          component = "database";
        };

        strategy = {
          type = "RollingUpdate";

          rollingUpdate = {
            maxSurge = 0;
            maxUnavailable = 1;
          };
        };

        template = {
          metadata.labels = {
            app = "paperless";
            component = "database";
          };

          spec = {
            containers.postgres = {
              image = "postgres:15";
              ports.postgres.containerPort = 5432;
              imagePullPolicy = "Always";

              env = {
                POSTGRES_DB.value = "paperless";
                POSTGRES_USER.value = "paperless";
                PGDATA.value = "/pgdata/data";

                POSTGRES_PASSWORD.valueFrom.secretKeyRef = {
                  name = "database";
                  key = "password";
                };
              };

              volumeMounts = [{
                name = "data";
                mountPath = "/pgdata";
              }];
            };

            volumes.data.persistentVolumeClaim.claimName = "database";
          };
        };
      };
    };

    services = {
      web.spec = {
        selector = {
          app = "paperless";
          component = "web";
        };

        ports.web = {
          port = 80;
          targetPort = "web";
        };
      };

      redis.spec = {
        selector = {
          app = "paperless";
          component = "redis";
        };

        ports.redis = {
          port = 6379;
          targetPort = "redis";
        };
      };

      database.spec = {
        selector = {
          app = "paperless";
          component = "database";
        };

        ports.postgres = {
          port = 5432;
          targetPort = "postgres";
        };
      };
    };
  };

  lab = {
    ingresses.web = {
      host = "paperless.kun.is";

      service = {
        name = "web";
        portName = "web";
      };
    };

    longhorn.persistentVolumeClaim = {
      data = {
        volumeName = "paperless-data";
        storage = "10Gi";
      };

      redisdata = {
        volumeName = "paperless-redisdata";
        storage = "20Mi";
      };

      database = {
        volumeName = "paperless-db";
        storage = "150Mi";
      };
    };
  };
}