Book: Switch to docker cluster and adjust URIs

This aims to make development easier. Typically, developers run the
cluster from our docker compose, using `make up`. It would be great for
default URIs to match that, in order to not require passing
`SCYLLA_URI`. This requires changing CI: either to pass SCYLLA_URI, or
to use the docker cluster. For consistency, using docker cluster seemes
like a better option to me.

.github/workflows/book.yml

@@ -21,14 +21,12 @@ jobs:
   build:
     runs-on: ubuntu-latest
     timeout-minutes: 30
-    services:
-      scylladb:
-        image: scylladb/scylla
-        ports:
-          - 9042:9042
-        options: --health-cmd "cqlsh --debug scylladb" --health-interval 5s --health-retries 10
     steps:
     - uses: actions/checkout@v3
+    - name: Setup 3-node ScyllaDB cluster
+      run: |
+        sudo sh -c "echo 2097152 >> /proc/sys/fs/aio-max-nr"
+        docker compose -f test/cluster/docker-compose.yml up -d --wait
     - name: Setup rust toolchain
       uses: actions-rust-lang/setup-rust-toolchain@v1
       with:

docs/source/connecting/compression.md

@@ -20,7 +20,7 @@ use std::error::Error;
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn Error>> {
     let uri = std::env::var("SCYLLA_URI")
-        .unwrap_or_else(|_| "127.0.0.1:9042".to_string());
+        .unwrap_or_else(|_| "172.42.0.2:9042".to_string());
 
     let session: Session = SessionBuilder::new()
         .known_node(uri)
@@ -30,4 +30,4 @@ async fn main() -> Result<(), Box<dyn Error>> {
 
     Ok(())
 }
-```
+```

docs/source/connecting/connecting.md

@@ -14,7 +14,7 @@ use std::net::{IpAddr, Ipv4Addr, SocketAddr};
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn Error>> {
     let uri = std::env::var("SCYLLA_URI")
-        .unwrap_or_else(|_| "127.0.0.1:9042".to_string());
+        .unwrap_or_else(|_| "172.42.0.2:9042".to_string());
 
     let session: Session = SessionBuilder::new()
         .known_node(uri)

docs/source/logging/logging.md

@@ -27,7 +27,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     tracing_subscriber::fmt::init();
 
     let uri = std::env::var("SCYLLA_URI")
-        .unwrap_or_else(|_| "127.0.0.1:9042".to_string());
+        .unwrap_or_else(|_| "172.42.0.2:9042".to_string());
 
     info!("Connecting to {}", uri);
 
@@ -80,7 +80,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     // verbosity.
     env_logger::init();
 
-    let uri = std::env::var("SCYLLA_URI").unwrap_or_else(|_| "127.0.0.1:9042".to_string());
+    let uri = std::env::var("SCYLLA_URI").unwrap_or_else(|_| "172.42.0.2:9042".to_string());
     info!("Connecting to {}", uri);
 
     let session: Session = SessionBuilder::new().known_node(uri).build().await?;
@@ -93,4 +93,4 @@ async fn main() -> Result<(), Box<dyn Error>> {
 ```
 
 The full [example](https://github.com/scylladb/scylla-rust-driver/tree/main/examples/logging_log.rs) is available in the `examples` folder.
-You can run it from main folder of driver repository using `RUST_LOG=trace SCYLLA_URI=<scylla_ip>:9042 cargo run --example logging_log`.
+You can run it from main folder of driver repository using `RUST_LOG=trace SCYLLA_URI=<scylla_ip>:9042 cargo run --example logging_log`.

docs/source/quickstart/example.md

@@ -16,7 +16,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     // Create a new Session which connects to node at 127.0.0.1:9042
     // (or SCYLLA_URI if specified)
     let uri = std::env::var("SCYLLA_URI")
-        .unwrap_or_else(|_| "127.0.0.1:9042".to_string());
+        .unwrap_or_else(|_| "172.42.0.2:9042".to_string());
 
     let session: Session = SessionBuilder::new()
         .known_node(uri)

docs/source/schema/schema.md

@@ -15,7 +15,7 @@ Fetching database schema occurs periodically, but it can also be done on-demand.
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn Error>> {
     let uri = std::env::var("SCYLLA_URI")
-        .unwrap_or_else(|_| "127.0.0.1:9042".to_string());
+        .unwrap_or_else(|_| "172.42.0.2:9042".to_string());
 
     let session: Session = SessionBuilder::new().known_node(uri).build().await?;
     // Schema metadata will be fetched below
@@ -49,7 +49,7 @@ Example showing how to print obtained schema information:
 #[tokio::main]
 async fn main() -> Result<(), Box<dyn Error>> {
     let uri = std::env::var("SCYLLA_URI")
-        .unwrap_or_else(|_| "127.0.0.1:9042".to_string());
+        .unwrap_or_else(|_| "172.42.0.2:9042".to_string());
 
     let session: Session = SessionBuilder::new().known_node(uri).build().await?;
     // Schema metadata will be fetched below

docs/source/statements/timeouts.md

@@ -24,7 +24,7 @@ use scylla::statement::unprepared::Statement;
 use std::time::Duration;
 
 let uri = std::env::var("SCYLLA_URI")
-    .unwrap_or_else(|_| "127.0.0.1:9042".to_string());
+    .unwrap_or_else(|_| "172.42.0.2:9042".to_string());
 
 let no_timeout_profile_handle = ExecutionProfile::builder()
     .request_timeout(None) // no timeout