fix: dashboard metrics 慢查询优化(index+UNIX_TIMESTAMP分组) + 批量升级版本号修复

backend/internal/api/handlers/agent_install.go

@@ -6,6 +6,7 @@ import (
 	"net"
 	"net/http"
 	"strconv"
+	"strings"
 	"time"
 
 	"ezops/internal/models"
@@ -423,9 +424,9 @@ func (h *AgentInstallHandler) BatchUpgradeAgent(c *gin.Context) {
 				binaryFile = "aiops-agent-linux-arm64"
 			}
 
-			// 下载新二进制 + 重启服务
+			// 下载新二进制 + 获取版本号 + 重启服务
 			upgradeScript := fmt.Sprintf(
-				`curl -fsSL -o /tmp/aiops-agent %s/api/agent/bin/%s && chmod +x /tmp/aiops-agent && systemctl stop aiops-agent 2>/dev/null; mv /tmp/aiops-agent /usr/local/bin/aiops-agent && systemctl start aiops-agent && echo "UPGRADE_OK"`,
+				`curl -fsSL -o /tmp/aiops-agent %s/api/agent/bin/%s && chmod +x /tmp/aiops-agent && systemctl stop aiops-agent 2>/dev/null; mv /tmp/aiops-agent /usr/local/bin/aiops-agent && systemctl start aiops-agent; ver=$(/usr/local/bin/aiops-agent output 2>/dev/null | grep 'agent.version' | awk -F'[|[|]' '{print $2}' | tr -d ' '); echo "UPGRADE_OK ver=$ver"`,
 				serverURL, binaryFile,
 			)
 
@@ -437,9 +438,15 @@ func (h *AgentInstallHandler) BatchUpgradeAgent(c *gin.Context) {
 				continue
 			}
 
-			// 更新版本号
+			// 从输出提取版本号
+			agentVersion := "unknown"
+			parts := strings.Split(out, "ver=")
+			if len(parts) > 1 {
+				agentVersion = strings.TrimSpace(parts[1])
+			}
+
 			h.db.Model(&server).Updates(map[string]interface{}{
-				"agent_version": "v0.1.0",
+				"agent_version": agentVersion,
 				"last_check_at": time.Now(),
 			})
 			log.Printf("[BatchUpgrade] %s Agent 升级成功", server.Hostname)