tiddlywiki

Dockerised TiddlyWiki 5 server inside Google Compute Engine.

This is very much a work in progress still. I am using it as an exercise to learn Terraform. Expect to see frequent and unstable code chanes.

See https://nicolaw.uk/gcloud and https://nicolaw.uk/gcp for tangentally related notes on Google Cloud Platform.

Quickstart

Ensure that you have suitable credentials available for Terraform to interact with Google Cloud Platform. You should have one of the following environment variables set GOOGLE_CREDENTIALS, GOOGLE_CLOUD_KEYFILE_JSON, GCLOUD_KEYFILE_JSON, or you should make your identity available as the application default by running the following command:

gcloud auth application-default login
gcloud auth login
gcloud compute config-ssh

See https://www.terraform.io/docs/providers/google/index.html for more information about authenticating with this provider.

Deploy directly to GCE instance using Terraform:

ssh-add ~/.ssh/google_compute_engine
make apply \
  GOOGLE_PROJECT=mywiki-123456 \
  EMAIL=jdoe@mywiki.com DOMAIN=mywiki.com \
  TW_USERNAME=jdoe TW_PASSWORD=password1234 \
  GIT_USERNAME=jdoe GIT_SSH_KEY=~/.ssh/id_rsa \
  GIT_REPOSITORY=git@github.com:jdoe/mywiki.git

Test locally using Docker Compose:

make test \
  EMAIL=jdoe@mywiki.com DOMAIN=mywiki.com \
  TW_USERNAME=jdoe TW_PASSWORD=password1234

The following TCP ports should be exposed for your web browser:

Port	Example URL	Permissions	Description
tcp/80	http://mywiki.com	None	HTTP automatically redirects to HTTPS
tcp/443	https://mywiki.com	Read-only	HTTPS TiddlyWiki (PUT and DELETE writes are silently ignored, responding with HTTP 405 response codes)
tcp/444	https://mywiki.com:444	Read-write	HTTPS TiddlyWiki (password protected with basic digest authentication)

Design Overview

                                                                      |\_/|
                                                                     / @ @ \
                                                 End-user browsing  ( ^ º ^ )
                                                 https://mywiki.com  `>>x<<´
                                                                     /  O  \

                                                                        +
+--[Google Compute Engine]----------------------------------------------|------------------------------------+
|                                                                       |                                    |
|  +--[Container-Optimized OS VM Instance]------------------------------|---------------------------------+  |
|  |                                                                    |                                 |  |
|  |  +--[Docker]-----------+  +--[Docker]-----------+  +--[Docker]-----|-----+  +--[Docker]-----------+  |  |
|  |  |                     |  |                     |  |               |     |  |                     |  |  |
|  |  | Scheduled automation|  |  TiddlyWiki NodeJS  |  |  Apache       v     |  |  LetsEncrypt SSL    |  |  |
|  |  | tasks push backups  |  |  exposes tcp/8080   |  |  exposes            |  |  certificate        |  |  |
|  |  | to Git, & generate  |  |  to Apache.         |  |  tcp/80,443,444     |  |  generation         |  |  |
|  |  | static wiki page    |  |                     |  |  to the Internet.   |  |     automation and  |  |  |
|  |  | renderings.      <-------+                <-------+                <-------+   renewal.        |  |  |
|  |  |                 +   |  |                     |  |                     |  |                     |  |  |
|  |  +-----------------|---+  +---------------------+  +---------------------+  +---------------------+  |  |
|  |                    |                                                                                 |  |
|  +--------------------|---------------------------------------------------------------------------------+  |
|                       |                                                                                    |
+-----------------------|------------------------------------------------------------------------------------+
                        |
+--[Git Repository]-----|------+
|                       |      |
|  Upstream Git repo    v      |
|  provides versioned          |
|  backup store of TiddlyWiki  |
|  pages and static content.   |
|                              |
+------------------------------+

Makefile Variables

DOMAIN

Defaults to localhost.localdomain.

This value is used by the letsencrypt container to automatically generate SSL certificates.

EMAIL

Defaults to webmaster@localhost.localdomain.

This value is used by the letsencypt container to automatically generate SSL certificates.

TW_USERNAME

Defaults to anonymous.

TW_PASSWORD

When deploying to Google Compute Platform, Terraform will provide a default random password if one is not provided.

LETSENCRYPT_DATA

Defaults to /home/tiddlywiki/letsencrypt.

When deploying locally to a test Docker containers, you may wish to specify a custom bind location. The letsencrypt, automation and apache containers will bind a volume to this path, to read and write Let's Encrypt SSL certificate.

Remote Git Repository

The following variables are only required to replicate tiddlers data to a remote upstream Git repository as a backing store.

Upon startup, any existing tiddler data will be fetched from the Git repository.

GIT_REPOSITORY

Remote Git repository to replicte tiddlers data to.

Examples:

git@github.com:jdoe/mywiki.git
https://github.com/jdoe/mywiki.git
git@gitlab.com:jdoe/mywiki.git
https://gitlab.com/jdoe/mywiki.git

GIT_USERNAME

Username to login to the remote Git repository.

GIT_PASSWORD

Password to login to the remote Git repository.

GIT_SSH_KEY

Path and filename of the SSH private key to login to the remote Git repository.

This is not necessary when GIT_PASSWORD is specified.

Google Compute Platform

The following variables are only required when deploying to Google Compute Platform.

GOOGLE_PROJECT

Defaults to $GOOGLE_PROJECT environment variable.

GOOGLE_REGION

Defaults to $GOOGLE_REGION environment variable.

GOOGLE_ZONE

Defaults to $GOOGLE_ZONE environment variable.

INSTANCE_NAME

Name of Google Compute Engine VM instance to be deployed. Terraform will provide a default name matching the pattern tiddlywiki-?????? if one is not provided.

MACHINE_TYPE

Defaults to f1-micro.

Terraform

Placeholder.

$ make apply \
    GOOGLE_PROJECT="mywiki-12345" \
    GIT_USERNAME="jdoe" \
    GIT_REPOSITORY="git@github.com:jdoe/mywiki.git"
make[1]: Entering directory '/usr/local/src/tiddlywiki-gce'
terraform apply -auto-approve \
  -var=project="mywiki-12345" \
  -var=region="europe-west1" \
  -var=zone="europe-west1-d" \
  -var=name="" \
  -var=machine_type="f1-micro" \
  -var=domain="" \
  -var=email="" \
  -var=tw_username="anonymous" \
  -var=tw_password="" \
  -var=git_repository="git@github.com:jdoe/mywiki.git" \
  -var=git_username="jdoe" \
  -var=git_password="" \
  -var=letsencrypt_data="/home/tiddlywiki/letsencrypt"
random_string.password: Creating...
  length:  "" => "12"
  lower:   "" => "true"
  number:  "" => "true"
  result:  "" => "<computed>"
  special: "" => "true"
  upper:   "" => "true"
random_string.name: Creating...
  length:  "" => "6"
  lower:   "" => "true"
  number:  "" => "true"
  result:  "" => "<computed>"
  special: "" => "false"
  upper:   "" => "false"
random_string.name: Creation complete after 0s (ID: w3kvgm)
random_string.password: Creation complete after 0s (ID: p?O&>n7msCBY)
google_compute_firewall.allow-ssh-trusted: Creating...
  allow.#:                  "" => "1"
  allow.802338340.ports.#:  "" => "1"
  allow.802338340.ports.0:  "" => "22"
  allow.802338340.protocol: "" => "tcp"
  destination_ranges.#:     "" => "<computed>"
  direction:                "" => "<computed>"
  name:                     "" => "allow-ssh-trusted"
  network:                  "" => "default"
  priority:                 "" => "1000"
  project:                  "" => "<computed>"
  self_link:                "" => "<computed>"
  source_ranges.#:          "" => "1"
  source_ranges.1080289494: "" => "0.0.0.0/0"
  target_tags.#:            "" => "1"
  target_tags.538119224:    "" => "trusted-ssh"
google_compute_firewall.allow-http: Creating...
  allow.#:                   "" => "1"
  allow.1855828684.ports.#:  "" => "3"
  allow.1855828684.ports.0:  "" => "80"
  allow.1855828684.ports.1:  "" => "443"
  allow.1855828684.ports.2:  "" => "444"
  allow.1855828684.protocol: "" => "tcp"
  destination_ranges.#:      "" => "<computed>"
  direction:                 "" => "<computed>"
  name:                      "" => "allow-http"
  network:                   "" => "default"
  priority:                  "" => "1000"
  project:                   "" => "<computed>"
  self_link:                 "" => "<computed>"
  source_ranges.#:           "" => "1"
  source_ranges.1449289291:  "" => "0.0.0.0/0"
  target_tags.#:             "" => "1"
  target_tags.923935385:     "" => "http-server"
data.template_file.environment: Refreshing state...
google_compute_instance.tiddlywiki: Creating...
  boot_disk.#:                                         "" => "1"
  boot_disk.0.auto_delete:                             "" => "true"
  boot_disk.0.device_name:                             "" => "<computed>"
  boot_disk.0.disk_encryption_key_sha256:              "" => "<computed>"
  boot_disk.0.initialize_params.#:                     "" => "1"
  boot_disk.0.initialize_params.0.image:               "" =>
"cos-cloud/cos-stable"
  boot_disk.0.initialize_params.0.size:                "" => "<computed>"
  boot_disk.0.initialize_params.0.type:                "" => "<computed>"
  can_ip_forward:                                      "" => "false"
  cpu_platform:                                        "" => "<computed>"
  create_timeout:                                      "" => "4"
  guest_accelerator.#:                                 "" => "<computed>"
  instance_id:                                         "" => "<computed>"
  label_fingerprint:                                   "" => "<computed>"
  machine_type:                                        "" => "f1-micro"
  metadata.%:                                          "" => "2"
  metadata.ssh-keys:                                   "" => "tiddlywiki:ssh-rsa AAAMahnamahnabadeebedebemahnamahnabadebedeemahnamahnabadeebedebebadebebadebedeedeede-dede-de-deMahmamanamahnamahnamwompmwompmamomomanamomahnamahnabadeebedebemahnamahnabadebedeemahnamahnabadeebedebebedebebadebedebede-dede-de-demahnamahna jdoe@laptop

  metadata.user-data:                                  "" => "#cloud-config\n\nusers:\n- name: tiddlywiki\n  uid: 2000\n  homedir: /home/tiddlywiki\n\nwrite_files:\n- path: /etc/systemd/system/tiddlywiki.service\n  permissions: 0644\n  owner: root\n content: |\n    [Unit]\n    Description=TiddlyWiki\n    \n    [Service]\n EnvironmentFile=/home/tiddlywiki/systemd/tiddlywiki.env\n WorkingDirectory=/home/tiddlywiki/docker\n    ExecStart=/usr/bin/docker run --name=docker-compose \\\n                                  --rm --env-file env-file \\\n                                  -v /var/run/docker.sock:/var/run/docker.sock \\\n -v \"/home/tiddlywiki/docker:/rootfs/home/tiddlywiki/docker\" \\\n -w \"/rootfs/home/tiddlywiki/docker\" \\\n docker/compose:1.19.0 \\\n                                  up --build --force-recreate\n    ExecStop=/usr/bin/docker stop docker-compose\n ExecStopPost=/usr/bin/docker rm docker-compose\n    RestartSec=5\n Restart=always\n\nruncmd:\n- mkdir /home/tiddlywiki/systemd\n- mkdir /home/tiddlywiki/letsencrypt\n- mkdir /home/tiddlywiki/docker\n- mkdir /home/tiddlywiki/docker/apache\n- mkdir /home/tiddlywiki/docker/automation\n- mkdir /home/tiddlywiki/docker/letsencrypt\n- mkdir /home/tiddlywiki/docker/tiddlywiki\n- chown -R tiddlywiki /home/tiddlywiki\n- chgrp -R tiddlywiki /home/tiddlywiki\n- systemctl daemon-reload\n- systemctl start tiddlywiki.service || true\n"
  metadata_fingerprint:                                "" => "<computed>"
  name:                                                "" => "tiddlywiki-w3kvgm"
  network_interface.#:                                 "" => "1"
  network_interface.0.access_config.#:                 "" => "1"
  network_interface.0.access_config.0.assigned_nat_ip: "" => "<computed>"
  network_interface.0.access_config.0.nat_ip:          "" => "<computed>"
  network_interface.0.address:                         "" => "<computed>"
  network_interface.0.name:                            "" => "<computed>"
  network_interface.0.network:                         "" => "default"
  network_interface.0.network_ip:                      "" => "<computed>"
  network_interface.0.subnetwork_project:              "" => "<computed>"
  project:                                             "" => "<computed>"
  scheduling.#:                                        "" => "1"
  scheduling.0.automatic_restart:                      "" => "true"
  scheduling.0.on_host_maintenance:                    "" => "MIGRATE"
  scheduling.0.preemptible:                            "" => "false"
  self_link:                                           "" => "<computed>"
  tags.#:                                              "" => "3"
  tags.1936433573:                                     "" => "https-server"
  tags.538119224:                                      "" => "trusted-ssh"
  tags.988335155:                                      "" => "http-server"
  tags_fingerprint:                                    "" => "<computed>"
  zone:                                                "" => "europe-west1-d"
google_compute_firewall.allow-ssh-trusted: Still creating... (10s elapsed)
google_compute_firewall.allow-http: Still creating... (10s elapsed)
google_compute_instance.tiddlywiki: Still creating... (10s elapsed)
google_compute_firewall.allow-http: Creation complete after 12s (ID: allow-http)
google_compute_instance.tiddlywiki: Provisioning with 'file'...
google_compute_firewall.allow-ssh-trusted: Creation complete after 14s (ID: allow-ssh-trusted)
google_compute_instance.tiddlywiki: Still creating... (20s elapsed)
google_compute_instance.tiddlywiki: Provisioning with 'file'...
google_compute_instance.tiddlywiki: Provisioning with 'file'...
google_compute_instance.tiddlywiki: Provisioning with 'file'...
google_compute_instance.tiddlywiki: Provisioning with 'file'...
google_compute_instance.tiddlywiki: Provisioning with 'file'...
google_compute_instance.tiddlywiki: Provisioning with 'file'...
google_compute_instance.tiddlywiki: Creation complete after 29s (ID: tiddlywiki-w3kvgm)

Apply complete! Resources: 5 added, 0 changed, 0 destroyed.

Outputs:

password = p?O&>n7msCBY
private_ip = 10.34.2.21
public_ip = 35.205.29.117
rw_url = https://anonymous:p%3FO%26%3En7msCBY@35.205.29.117:444
url = https://35.205.29.117
username = anonymous
make[1]: Leaving directory '/usr/local/src/tiddlywiki-gce'

Screencast Demonstration

TODO

Prestuff /recipes/default/tiddlers.json and /status over HTTP2 connections for improved client load time performance.
Make push of Tiddlers to Git more robust on merge conflicts.
Make LetsEncrypt functionality a little more robust.
Maybe merge letsencrypt and apache images, because currently certbot has no way to restart Apache once a certificate is generated or renewed.
Improve Terraform configuration (I'm still learning Terraform).
- Build and deliver Docker images to Google Cloud registry using the docker provider.
- Automatically point DNS at the GCE VM instance using the Google Cloud provider with managed DNS.
- Automatically create a Git source repository in Google Cloud.
Maybe replace Apache with Nginx for better protection against slowloris?
Maybe merge tiddlywiki and automation images, but retain seperate containers.
Improve the way that htdocs/static-a, htdocs/static-b and htdocs/static end up being persisted to Git. (Multiple copies is a little sub-optimal).
Maybe add refresh timer to systemd unit https://gist.github.com/Luzifer/7c54c8b0b61da450d10258f0abd3c917 https://gist.github.com/mosquito/b23e1c1e5723a7fd9e6568e5cf91180f https://www.freedesktop.org/software/systemd/man/systemd.time.html
Tidy up the shell scripts in the containers. They're nasty. I was being sloppy because they're using busybox ash instead of bash,.. but that's no excuse!

Links

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Name		Name	Last commit message	Last commit date
Latest commit History 47 Commits
apache		apache
automation		automation
letsencrypt		letsencrypt
tiddlywiki		tiddlywiki
.gitignore		.gitignore
LICENSE		LICENSE
Makefile		Makefile
README.md		README.md
cloud-config.yaml		cloud-config.yaml
dns.tf		dns.tf
docker-compose.yaml		docker-compose.yaml
env-file		env-file
firewall.tf		firewall.tf
gcp.tf		gcp.tf
main.tf		main.tf
password.tf		password.tf
tiddlywiki.env.tpl		tiddlywiki.env.tpl
versions.tf		versions.tf

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tiddlywiki

Quickstart

Design Overview

Makefile Variables

DOMAIN

EMAIL

TW_USERNAME

TW_PASSWORD

LETSENCRYPT_DATA

Remote Git Repository

GIT_REPOSITORY

GIT_USERNAME

GIT_PASSWORD

GIT_SSH_KEY

Google Compute Platform

GOOGLE_PROJECT

GOOGLE_REGION

GOOGLE_ZONE

INSTANCE_NAME

MACHINE_TYPE

Terraform

Screencast Demonstration

TODO

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tiddlywiki

Quickstart

Design Overview

Makefile Variables

DOMAIN

EMAIL

TW_USERNAME

TW_PASSWORD

LETSENCRYPT_DATA

Remote Git Repository

GIT_REPOSITORY

GIT_USERNAME

GIT_PASSWORD

GIT_SSH_KEY

Google Compute Platform

GOOGLE_PROJECT

GOOGLE_REGION

GOOGLE_ZONE

INSTANCE_NAME

MACHINE_TYPE

Terraform

Screencast Demonstration

TODO

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