WIP: docs(dashd): add stuff

dashd/README.md

@@ -2,8 +2,115 @@
 title: dashd (alias)
 homepage: https://webinstall.dev/dashcore
 tagline: |
-    `dashd` (dash daemon) is an alias for `dashcore` (the dash suite)
+  `dashd` (dash daemon) is an alias for `dashcore` (the dash suite)
 alias: dashcore
 ---
 
-See [Dash Core](/dashcore).
+To update or switch versions, run `webi dashd@stable` (or `@v0.17`, `@beta`,
+etc).
+
+### Files
+
+These are the files / directories that are created and/or modified with this
+install:
+
+```txt
+~/.config/envman/PATH.env
+~/.local/bin/
+~/.local/opt/dashcore/
+~/.dashcore/
+```
+
+## Cheat Sheet
+
+> The _Dash Daemon_ joins and listens on the Dash network for payment
+> transactions.
+
+You will at least 2GB+ RAM + Swap (or 4GB+ without swap) and 50GB storage (20GB
+for the ledger + another 20gb for indices) for `dashd` to be able to provide
+transaction info and RPC services.
+
+A first run will typically take _several_ hours to sync.
+
+```bash
+dashd -- -conf=/home/app/.dashcore/dash.conf -datadir=/mnt/volume_100gb/dashcore/
+```
+
+### How to configure dashd
+
+`~/.dashcore/dash.conf`:
+
+```txt
+rpcuser=dash
+rpcpassword=local321
+rpcallowip=127.0.0.1/0
+
+#listen=1
+server=1
+#daemon=1
+
+whitelist=127.0.0.1/0
+
+# light mode
+#prune=945
+txindex=1
+addressindex=0
+timestampindex=0
+spentindex=0
+
+zmqpubrawtx=tcp://127.0.0.1:28332
+zmqpubrawtxlock=tcp://127.0.0.1:28332
+zmqpubhashblock=tcp://127.0.0.1:28332
+#ip=
+rpcport=9998
+uacomment=bitcore
+#debug=1
+#testnet=1
+```
+
+### How to run dashd as a system service
+
+```bash
+sudo env PATH="${PATH}" \
+    serviceman add --system --username "$(whoami)" --path "${PATH}" --name dashd -- \
+    dashd -- -conf=/home/app/.dashcore/dash.conf -datadir=/mnt/volume_100gb/dashcore/
+```
+
+### How to enable Swap Space
+
+`dashd` takes a _lot_ of RAM during the initial sync phase. Once that is
+completed, it uses _significantly_ less for daily use.
+
+If you want to save money you can give yourself 4GB+ Swap and although the sync
+process will run a little slower (but probably not that much), you'll be able to
+complete it using disk storage.
+
+To create a swap file:
+
+```bash
+sudo fallocate -l 8G /var/swapfile
+sudo chmod 0600 /var/swapfile
+sudo mkswap /var/swapfile
+```
+
+To temporarily enable swap:
+
+```bash
+sudo swapon /var/swapfile
+```
+
+To permanently enable swap:
+
+```bash
+sudo bash -c 'echo "/var/swapfile none swap sw 0 0" > /etc/fstab'
+```
+
+To disable and delete swap:
+
+```bash
+sudo swapoff /var/swapfile
+```
+
+(don't forget to remove it from `/etc/fstab` as well)
+
+See [vps-addswap](/vps-addswap) for details.