Add backup / restore scripts

.gitignore

@@ -8,6 +8,6 @@ cinera/*/
 cinera/cinera.conf
 annotations/
 /hmn
-deploy.conf
+hmn.conf
 adminmailer/config.go
 adminmailer/adminmailer

server/.s3cfg

@@ -0,0 +1,6 @@
+[default]
+access_key = <ACCESS KEY>
+secret_key = <SECRET KEY>
+host_base = nyc3.digitaloceanspaces.com
+host_bucket = %(bucket)s.nyc3.digitaloceanspaces.com
+use_https = True

server/backup.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -euxo pipefail
+source /home/hmn/hmn/server/hmn.conf
+
+TS=$(date --iso-8601)
+FILENAME="hmn_pg_dump_${HMN_ENV}_${TS}"
+DUMP="/tmp/$FILENAME"
+
+echo "Dumping database..."
+su - postgres -c "pg_dump -Fc hmn > $DUMP"
+
+echo "Uploading database..."
+s3cmd --config /home/hmn/.s3cfg put $DUMP s3://hmn-backup/db/$FILENAME
+
+echo "Uploading static assets..."
+s3cmd --config /home/hmn/.s3cfg sync /home/hmn/hmn/public/media/ s3://hmn-backup/static/media/
+
+echo "Done."
+rm "$DUMP"

server/deploy.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 
 set -eo pipefail
+source /home/hmn/hmn/server/hmn.conf
 
 branch=$1
 if [ -z "$branch" ]; then

server/deploy_hook.sh

@@ -1,8 +1,7 @@
 #!/bin/bash
 
 set -eo pipefail
-
-. /home/hmn/hmn/server/deploy.conf
+source /home/hmn/hmn/server/hmn.conf
 
 echo 'Content-Type: text/plain'
 echo ''

server/download_database.sh

@@ -0,0 +1,19 @@
+#!/bin/bash
+
+# Downloads a database backup from DigitalOcean. Does not restore it on its own; we have the
+# seedfile command for that.
+
+set -euo pipefail
+source /home/hmn/hmn/server/hmn.conf
+
+s3cmd --config /home/hmn/.s3cfg ls s3://hmn-backup/db/
+
+echo ""
+echo "Above is a list of all the available database backups."
+echo "Enter the name of the one you would like to download (e.g. \"hmn_pg_dump_live_2021-09-01\"):"
+read filename
+
+s3cmd --config /home/hmn/.s3cfg get s3://hmn-backup/db/$filename $filename
+
+echo ""
+echo "Downloaded $filename to $(pwd)."

server/hmn.conf.example

@@ -1 +1,2 @@
+export HMN_ENV=<ENV NAME>
 export GITLAB_SECRET=<GITLAB WEBHOOK SECRET>

server/restore_static_files.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+
+set -eo pipefail
+source /home/hmn/hmn/server/hmn.conf
+
+if [ "$(whoami)" != "hmn" ]; then
+  echo "WARNING! You are not running this script as the hmn user. This will probably screw up file permissions."
+  echo "Press Ctrl-C to cancel, or press enter to continue."
+  read
+fi
+
+s3cmd sync s3://hmn-backup/static/media/ /home/hmn/hmn/public/media/

server/root.Makefile

@@ -11,13 +11,13 @@ help: ## Print this help.
 		| sed 's/^.*\/\(.*\)/\1/' \
 		| awk 'BEGIN {FS = ":[^:]*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'
 
-deploy:
-	/home/hmn/hmn/server/deploy.sh $1
+deploy: ## Manually build and deploy a branch of the website.
+	/home/hmn/hmn/server/deploy.sh
 
-build:
+build: ## Rebuild the website binary
 	sudo -u hmn --preserve-env=PATH bash -c "cd ~/hmn && go build -o /home/hmn/bin/hmn src/main.go"
 
-edit-config:
+edit-config: ## Edit the website config
 	vim /home/hmn/hmn/src/config/config.go
 	@echo 'Now that you have edited the config, you probably want to re-deploy the site:'
 	@echo ''
@@ -29,3 +29,9 @@ logs: ## View logs for the website
 
 logs-caddy: ## View logs for Caddy
 	journalctl -u caddy.service -f
+
+download-database: ## Download a database backup
+	sudo -u hmn bash -c "cd ~ && ~/hmn/server/download_database.sh"
+
+restore-static-files: ## Download static files from the backup.
+	sudo -u hmn bash -c "cd ~/hmn && /home/hmn/hmn/server/restore_static_files.sh"

server/serversetup.sh

@@ -61,7 +61,8 @@ if [ $checkpoint -lt 30 ]; then
     apt update
     apt install -y \
         build-essential \
-        libcurl4-openssl-dev byacc flex
+        libcurl4-openssl-dev byacc flex \
+        s3cmd
     
     savecheckpoint 30
 fi
@@ -205,12 +206,16 @@ if [ $checkpoint -lt 100 ]; then
     cp /home/hmn/hmn/server/logrotate /etc/logrotate.d/hmn
     
     cp /home/hmn/hmn/src/config/config.go.example /home/hmn/hmn/src/config/config.go
-    cp /home/hmn/hmn/server/deploy.conf.example /home/hmn/hmn/server/deploy.conf
+    cp /home/hmn/hmn/server/hmn.conf.example /home/hmn/hmn/server/hmn.conf
     cp /home/hmn/hmn/cinera/cinera.conf.sample /home/hmn/hmn/cinera/cinera.conf
     chown hmn:hmn /home/hmn/hmn/src/config/config.go
-    chown hmn:hmn /home/hmn/hmn/server/deploy.conf
+    chown hmn:hmn /home/hmn/hmn/server/hmn.conf
     chown hmn:hmn /home/hmn/hmn/cinera/cinera.conf
 
+    cp /home/hmn/hmn/server/.s3cfg /home/hmn/.s3cfg
+    chown hmn:hmn /home/hmn/.s3cfg
+    chmod 600 /home/hmn/.s3cfg
+
     cp /home/hmn/hmn/server/root.Makefile /root/Makefile
 
     systemctl daemon-reload
@@ -218,6 +223,14 @@ if [ $checkpoint -lt 100 ]; then
     savecheckpoint 100
 fi
 
+# Set up crons
+if [ $checkpoint -lt 105 ]; then
+  # See https://stackoverflow.com/a/9625233/1177139
+  (crontab -l 2>/dev/null; echo "50 4 * * * /home/hmn/hmn/server/backup.sh") | crontab -
+
+  savecheckpoint 105
+fi
+
 # Build the site for the first time (despite bad config)
 if [ $checkpoint -lt 110 ]; then    
     do_as hmn <<'SCRIPT'
@@ -272,20 +285,24 @@ ${BLUE_BOLD}Website${RESET}: /home/hmn/hmn/src/config/config.go
     You don't need to deploy the site yet; wait until you've
     configured everything.
 
-${BLUE_BOLD}Deploy Secret${RESET}: /home/hmn/hmn/server/deploy.conf
+${BLUE_BOLD}HMN Environment Vars${RESET}: /home/hmn/hmn/server/hmn.conf
 
     First, go to GitLab and add a webhook with a secret. Set it to trigger on
     push events for the branch you are using for deploys.
 
         https://git.handmade.network/hmn/hmn/hooks
 
-    Then, edit the above file and fill in the secret value from the
-    GitLab webhook.
+    Then, edit the above file and fill in all the environment vars, including
+    the secret value from the GitLab webhook.
 
 ${BLUE_BOLD}Cinera${RESET}: /home/hmn/hmn/cinera/cinera.conf
 
     Add the correct domain.
 
+${BLUE_BOLD}s3cmd${RESET}: /home/hmn/.s3cfg
+
+    Add the DigitalOcean Spaces credentials, and ensure that the bucket info is correct.
+
 
 ${BLUE_BOLD}===== Next steps =====${RESET}
 
@@ -293,11 +310,18 @@ Make sure you have everything on your path:
 
     source ~/.bashrc
 
-Restore a database backup:
+Download and restore a database backup:
+
+    make download-database
 
     su hmn
     cd ~
-    hmn seedfile <I dunno man figure it out>
+    hmn migrate --list
+    hmn seedfile <your backup file> <ID of initial migration>
+
+Restore static files:
+
+    make restore-static-files
 
 Start up Caddy: