chore: combine centralized guide and tutorial and reorder guides (#526)

Author: MSevey

.vitepress/config.ts

@@ -322,8 +322,8 @@ function sidebarHome() {
           link: "/guides/use-rollkit-cli",
         },
         {
-          text: "Create genesis for your rollup",
-          link: "/guides/create-genesis",
+          text: "Use Ignite to create a Rollkit app",
+          link: "/guides/ignite-rollkit",
         },
         {
           text: "Restart your rollup",
@@ -337,17 +337,13 @@ function sidebarHome() {
           text: "Run a rollup full node",
           link: "/guides/full-node",
         },
-        {
-          text: "Run a centralized sequencer",
-          link: "/guides/centralized-sequencer",
-        },
         {
           text: "CometBFT into a Rollkit app",
           link: "/guides/cometbft-to-rollkit",
         },
         {
-          text: "Use Ignite to create a Rollkit app",
-          link: "/guides/ignite-rollkit",
+          text: "Create genesis for your rollup",
+          link: "/guides/create-genesis",
         },
         {
           text: "Configuration",

guides/centralized-sequencer.md

@@ -30,6 +30,8 @@ make build
 ./build/centralized-sequencer -h
 ```
 
+You should see the following output:
+
 ```sh
 Usage:
   -host string
@@ -50,6 +52,7 @@ Usage:
     	DA namespace where the sequencer submits transactions
   -db_path string
     	path to the database
+...
 ```
 
 As shown by the help command, a centralized sequencer is configured to serve a rollup (via `rollup_id`). The DA network to persist the sequenced batches are specified using `da_address`, `da_auth_token` and `da_namespace`.
@@ -113,6 +116,24 @@ Then after a few blocks you should see this message confirming that your sequenc
 I[2024-11-15|16:04:07.698] successfully submitted Rollkit headers to DA layer module=BlockManager gasPrice=-1 daHeight=1 headerCount=14
 ```
 
+## Metrics {#metrics}
+
+The `centralized-sequencer` node reports Prometheus metrics when the `-metrics` flag is enabled.
+
+By default, metrics are exported to `http://localhost:8080/metrics`.
+
+The listening address and port can be configured with the `-metrics-address` flag.
+
+The following metrics are available:
+
+| **Name**                                  | **Type**  | **Tags**  | **Description**                                                        |
+|-------------------------------------------|-----------|-----------|------------------------------------------------------------------------|
+| sequencer_gas_price                       | Gauge     |           | Gas price of the DA transaction                                         |
+| sequencer_last_blob_size                  | Gauge     |           | Last blob size submitted to the DA                                      |
+| sequencer_transaction_status              | Gauge     |           | Transaction status of the DA transaction                                |
+| sequencer_num_pending_blocks              | Gauge     |           | Number of blocks pending DA submission                                  |
+| sequencer_included_block_height           | Gauge     |           | Block height of the last DA transaction                                 |
+
 ## Summary {#summary}
 
 By following these steps, you will have successfully set up and connected your chain to the centralized sequencer. You can now start submitting transactions to your chain.