Reduce all command timeouts to 2-3 seconds max

With 10-second host heartbeat timeout, all command timeouts must be significantly lower to ensure total collection time stays under 10 seconds.

Changed timeouts:
- smartctl: 10s → 3s (critical: multiple drives queried sequentially)
- du: 5s → 2s
- lsblk: 5s → 2s
- systemctl list commands: 5s → 3s
- systemctl show/is-active: 3s → 2s
- docker commands: 5s → 3s
- df, ip commands: 3s → 2s

Total worst-case collection time now capped at more reasonable levels, preventing false host offline alerts from blocking operations.

Cargo.lock

@@ -279,7 +279,7 @@ checksum = "a1d728cc89cf3aee9ff92b05e62b19ee65a02b5702cff7d5a377e32c6ae29d8d"
 
 [[package]]
 name = "cm-dashboard"
-version = "0.1.186"
+version = "0.1.187"
 dependencies = [
  "anyhow",
  "chrono",
@@ -301,7 +301,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-agent"
-version = "0.1.186"
+version = "0.1.187"
 dependencies = [
  "anyhow",
  "async-trait",
@@ -324,7 +324,7 @@ dependencies = [
 
 [[package]]
 name = "cm-dashboard-shared"
-version = "0.1.186"
+version = "0.1.187"
 dependencies = [
  "chrono",
  "serde",

agent/src/collectors/disk.rs

@@ -117,7 +117,7 @@ impl DiskCollector {
         let mut cmd = Command::new("lsblk");
         cmd.args(&["-rn", "-o", "NAME,MOUNTPOINT"]);
 
-        let output = run_command_with_timeout(cmd, 5).await
+        let output = run_command_with_timeout(cmd, 2).await
             .map_err(|e| CollectorError::SystemRead {
                 path: "block devices".to_string(),
                 error: e.to_string(),
@@ -427,7 +427,7 @@ impl DiskCollector {
             cmd.args(&["-a", &format!("/dev/{}", drive_name)]);
         }
 
-        let output = run_command_with_timeout(cmd, 10).await
+        let output = run_command_with_timeout(cmd, 3).await
             .map_err(|e| CollectorError::SystemRead {
                 path: format!("SMART data for {}", drive_name),
                 error: e.to_string(),
@@ -764,7 +764,7 @@ impl DiskCollector {
     fn get_drive_info_for_path(&self, path: &str) -> anyhow::Result<PoolDrive> {
         // Use lsblk to find the backing device with timeout
         let output = Command::new("timeout")
-            .args(&["5", "lsblk", "-rn", "-o", "NAME,MOUNTPOINT"])
+            .args(&["2", "lsblk", "-rn", "-o", "NAME,MOUNTPOINT"])
             .output()
             .map_err(|e| anyhow::anyhow!("Failed to run lsblk: {}", e))?;
             

agent/src/collectors/memory.rs

@@ -105,8 +105,8 @@ impl MemoryCollector {
             return Ok(());
         }
 
-        // Get usage data for all tmpfs mounts at once using df (with 3 second timeout)
+        // Get usage data for all tmpfs mounts at once using df (with 2 second timeout)
-        let mut df_args = vec!["3", "df", "--output=target,size,used", "--block-size=1"];
+        let mut df_args = vec!["2", "df", "--output=target,size,used", "--block-size=1"];
         df_args.extend(tmpfs_mounts.iter().map(|s| s.as_str()));
 
         let df_output = std::process::Command::new("timeout")

agent/src/collectors/network.rs

@@ -110,7 +110,7 @@ impl NetworkCollector {
         // Parse VLAN configuration
         let vlan_map = Self::parse_vlan_config();
 
-        match Command::new("timeout").args(["3", "ip", "-j", "addr"]).output() {
+        match Command::new("timeout").args(["2", "ip", "-j", "addr"]).output() {
             Ok(output) if output.status.success() => {
                 let json_str = String::from_utf8_lossy(&output.stdout);
 

agent/src/collectors/systemd.rs

@@ -251,18 +251,18 @@ impl SystemdCollector {
 
     /// Auto-discover interesting services to monitor
     fn discover_services_internal(&self) -> Result<(Vec<String>, std::collections::HashMap<String, ServiceStatusInfo>)> {
-        // First: Get all service unit files (with 5 second timeout)
+        // First: Get all service unit files (with 3 second timeout)
         let unit_files_output = Command::new("timeout")
-            .args(&["5", "systemctl", "list-unit-files", "--type=service", "--no-pager", "--plain"])
+            .args(&["3", "systemctl", "list-unit-files", "--type=service", "--no-pager", "--plain"])
             .output()?;
 
         if !unit_files_output.status.success() {
             return Err(anyhow::anyhow!("systemctl list-unit-files command failed"));
         }
 
-        // Second: Get runtime status of all units (with 5 second timeout)
+        // Second: Get runtime status of all units (with 3 second timeout)
         let units_status_output = Command::new("timeout")
-            .args(&["5", "systemctl", "list-units", "--type=service", "--all", "--no-pager", "--plain"])
+            .args(&["3", "systemctl", "list-units", "--type=service", "--all", "--no-pager", "--plain"])
             .output()?;
 
         if !units_status_output.status.success() {
@@ -358,16 +358,16 @@ impl SystemdCollector {
             }
         }
 
-        // Fallback to systemctl if not in cache (with 3 second timeout)
+        // Fallback to systemctl if not in cache (with 2 second timeout)
         let output = Command::new("timeout")
-            .args(&["3", "systemctl", "is-active", &format!("{}.service", service)])
+            .args(&["2", "systemctl", "is-active", &format!("{}.service", service)])
             .output()?;
 
         let active_status = String::from_utf8(output.stdout)?.trim().to_string();
 
-        // Get more detailed info (with 3 second timeout)
+        // Get more detailed info (with 2 second timeout)
         let output = Command::new("timeout")
-            .args(&["3", "systemctl", "show", &format!("{}.service", service), "--property=LoadState,ActiveState,SubState"])
+            .args(&["2", "systemctl", "show", &format!("{}.service", service), "--property=LoadState,ActiveState,SubState"])
             .output()?;
 
         let detailed_info = String::from_utf8(output.stdout)?;
@@ -427,9 +427,9 @@ impl SystemdCollector {
             return Ok(0.0);
         }
 
-        // No configured path - try to get WorkingDirectory from systemctl (with 3 second timeout)
+        // No configured path - try to get WorkingDirectory from systemctl (with 2 second timeout)
         let output = Command::new("timeout")
-            .args(&["3", "systemctl", "show", &format!("{}.service", service_name), "--property=WorkingDirectory"])
+            .args(&["2", "systemctl", "show", &format!("{}.service", service_name), "--property=WorkingDirectory"])
             .output()
             .map_err(|e| CollectorError::SystemRead {
                 path: format!("WorkingDirectory for {}", service_name),
@@ -449,15 +449,15 @@ impl SystemdCollector {
         Ok(0.0)
     }
     
-    /// Get size of a directory in GB (with 5 second timeout)
+    /// Get size of a directory in GB (with 2 second timeout)
     async fn get_directory_size(&self, path: &str) -> Option<f32> {
         use super::run_command_with_timeout;
 
-        // Use -s (summary) and --apparent-size for speed, 5 second timeout
+        // Use -s (summary) and --apparent-size for speed, 2 second timeout
         let mut cmd = Command::new("sudo");
         cmd.args(&["du", "-s", "--apparent-size", "--block-size=1", path]);
 
-        let output = run_command_with_timeout(cmd, 5).await.ok()?;
+        let output = run_command_with_timeout(cmd, 2).await.ok()?;
 
         if !output.status.success() {
             // Log permission errors for debugging but don't spam logs
@@ -783,9 +783,9 @@ impl SystemdCollector {
         let mut containers = Vec::new();
 
         // Check if docker is available (cm-agent user is in docker group)
-        // Use -a to show ALL containers (running and stopped) with 5 second timeout
+        // Use -a to show ALL containers (running and stopped) with 3 second timeout
         let output = Command::new("timeout")
-            .args(&["5", "docker", "ps", "-a", "--format", "{{.Names}},{{.Status}}"])
+            .args(&["3", "docker", "ps", "-a", "--format", "{{.Names}},{{.Status}}"])
             .output();
 
         let output = match output {
@@ -826,9 +826,9 @@ impl SystemdCollector {
     /// Get docker images as sub-services
     fn get_docker_images(&self) -> Vec<(String, String, String, f32)> {
         let mut images = Vec::new();
-        // Check if docker is available (cm-agent user is in docker group) with 5 second timeout
+        // Check if docker is available (cm-agent user is in docker group) with 3 second timeout
         let output = Command::new("timeout")
-            .args(&["5", "docker", "images", "--format", "{{.Repository}}:{{.Tag}},{{.Size}}"])
+            .args(&["3", "docker", "images", "--format", "{{.Repository}}:{{.Tag}},{{.Size}}"])
             .output();
 
         let output = match output {