diff --git a/README.md b/README.md
index 3798edd..155c212 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # 哪吒面板
 
-服务期状态监控，报警通知，被动接收，极省资源 64M 小鸡也能装 Agent。
+系统状态、API(SSL证书变更、即将到期、到期)/TCP端口存活/PING 监控，报警通知，被动接收，极省资源 64M 小鸡也能装 Agent。
 
 |  哪吒面板    |   首页截图1   |   首页截图2   |
 | ---- | ---- | ---- |
@@ -131,7 +131,7 @@ URL 里面也可放置占位符，请求时会进行简单的字符串替换。
   - net_in_speed(入站网速)、net_out_speed(出站网速)、net_all_speed(双向网速)、transfer_in(入站流量)、transfer_out(出站流量)、transfer_all(双向流量)：Min/Max 数值为字节（1kb=1024，1mb = 1024*1024）
   - offline：不支持 Min/Max 参数
 - Duration：持续秒数，监控比较简陋，取持续时间内的 70 采样结果
-
+- Ignore: `{"1": true, "2":false}` 忽略此规则的服务器ID列表
 ## 常见问题
 
 ### 数据备份恢复
@@ -182,7 +182,19 @@ URL 里面也可放置占位符，请求时会进行简单的字符串替换。
 
 ## 变更日志
 
-- `0.2.0` **重大更新**
+- `dashboard 0.2.1` `agent 0.2.1`
+   
+   - dashboard
+     - 修复了默认开启IP变更通知
+     - hotaru 主题的服务状态页面
+     - **新增可以指定服务器忽略监控规则**
+     - 修复info透明 @ilay1678
+
+   - agent
+     - 优化了 IPv6/IPv4 双栈问题
+     - 增加 SSL 证书过期、即将过期提醒
+
+- `dashboard 0.2.0` `agent 0.2.0` **重大更新**
 
    增加了服务监控（TCP端口延迟、Ping、HTTP-SSL 证书）功能，此版本 Agent 与旧面板不兼容，而 Agent 是通过 GitHub Release 自动更新的 所以务必更新面板开启最新功能。
 
diff --git a/cmd/agent/main.go b/cmd/agent/main.go
index 4564339..6871779 100644
--- a/cmd/agent/main.go
+++ b/cmd/agent/main.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"crypto/tls"
 	"errors"
 	"fmt"
 	"log"
@@ -50,6 +51,9 @@ var (
 	ctx            = context.Background()
 	delayWhenError = time.Second * 10
 	updateCh       = make(chan struct{}, 0)
+	httpClient     = &http.Client{Transport: &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}}
 )
 
 func doSelfUpdate() {
@@ -151,6 +155,7 @@ func run(cmd *cobra.Command, args []string) {
 func receiveTasks(tasks pb.NezhaService_RequestTaskClient) error {
 	var err error
 	var task *pb.Task
+
 	defer log.Printf("receiveTasks exit %v %v => %v", time.Now(), task, err)
 	for {
 		task, err = tasks.Recv()
@@ -159,30 +164,31 @@ func receiveTasks(tasks pb.NezhaService_RequestTaskClient) error {
 		}
 		var result pb.TaskResult
 		result.Id = task.GetId()
+		result.Type = task.GetType()
 		switch task.GetType() {
 		case model.MonitorTypeHTTPGET:
 			start := time.Now()
-			resp, err := http.Get(task.GetData())
+			resp, err := httpClient.Get(task.GetData())
 			if err == nil {
 				result.Delay = float32(time.Now().Sub(start).Microseconds()) / 1000.0
 				if resp.StatusCode > 299 || resp.StatusCode < 200 {
 					err = errors.New("\n应用错误：" + resp.Status)
 				}
 			}
-			var certs cert.Certs
 			if err == nil {
 				if strings.HasPrefix(task.GetData(), "https://") {
-					certs, err = cert.NewCerts([]string{task.GetData()})
+					c := cert.NewCert(task.GetData()[8:])
+					if c.Error != "" {
+						if strings.Contains(c.Error, "expired") {
+							result.Data = "SSL证书错误：证书已过期"
+						} else {
+							result.Data = "SSL证书错误：" + c.Error
+						}
+					} else {
+						result.Data = c.Issuer + "|" + c.NotAfter
+						result.Successful = true
+					}
 				}
-			}
-			if err == nil {
-				if len(certs) == 0 {
-					err = errors.New("\n获取SSL证书错误：未获取到证书")
-				}
-			}
-			if err == nil {
-				result.Data = certs[0].Issuer
-				result.Successful = true
 			} else {
 				result.Data = err.Error()
 			}
diff --git a/cmd/dashboard/controller/controller.go b/cmd/dashboard/controller/controller.go
index 99a1831..d25ef7b 100644
--- a/cmd/dashboard/controller/controller.go
+++ b/cmd/dashboard/controller/controller.go
@@ -42,6 +42,9 @@ func ServeWeb(port uint) {
 		"ts": func(s string) string {
 			return strings.TrimSpace(s)
 		},
+		"float32f": func(f float32) string {
+			return fmt.Sprintf("%.2f", f)
+		},
 		"divU64": func(a, b uint64) float32 {
 			if b == 0 {
 				if a > 0 {
@@ -49,6 +52,10 @@ func ServeWeb(port uint) {
 				}
 				return 0
 			}
+			if a == 0 {
+				// 这是从未在线的情况
+				return 1 / float32(b) * 100
+			}
 			return float32(a) / float32(b) * 100
 		},
 		"div": func(a, b int) float32 {
@@ -58,6 +65,10 @@ func ServeWeb(port uint) {
 				}
 				return 0
 			}
+			if a == 0 {
+				// 这是从未在线的情况
+				return 1 / float32(b) * 100
+			}
 			return float32(a) / float32(b) * 100
 		},
 		"addU64": func(a, b uint64) uint64 {
diff --git a/cmd/dashboard/rpc/rpc.go b/cmd/dashboard/rpc/rpc.go
index 1c6b45b..e8072d5 100644
--- a/cmd/dashboard/rpc/rpc.go
+++ b/cmd/dashboard/rpc/rpc.go
@@ -2,7 +2,6 @@ package rpc
 
 import (
 	"fmt"
-	"log"
 	"net"
 	"time"
 
@@ -47,9 +46,7 @@ func DispatchTask(duration time.Duration) {
 				continue
 			}
 			hasAliveAgent = true
-			log.Println("DispatchTask 确认派发 >>>>>", i, index)
 			dao.SortedServerList[index].TaskStream.Send(tasks[i].PB())
-			log.Println("DispatchTask 确认派发 <<<<<", i, index)
 			index++
 		}
 		dao.ServerLock.RUnlock()
diff --git a/cmd/playground/main.go b/cmd/playground/main.go
index 627d7ee..068d2b6 100644
--- a/cmd/playground/main.go
+++ b/cmd/playground/main.go
@@ -1,9 +1,11 @@
 package main
 
 import (
+	"crypto/tls"
 	"fmt"
 	"log"
 	"net"
+	"net/http"
 	"os/exec"
 	"time"
 
@@ -13,11 +15,23 @@ import (
 )
 
 func main() {
+	// 跳过 SSL 检查
+	transCfg := &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}
+	httpClient := &http.Client{Transport: transCfg}
+	_, err := httpClient.Get("https://expired-ecc-dv.ssl.com")
+	fmt.Println(err)
+	// SSL 证书信息获取
+	c := cert.NewCert("expired-ecc-dv.ssl.com")
+	fmt.Println(c.Error)
+	// TCP
 	conn, err := net.DialTimeout("tcp", "example.com:80", time.Second*10)
 	if err != nil {
 		panic(err)
 	}
 	println(conn)
+	// ICMP Ping
 	pinger, err := ping.NewPinger("example.com")
 	if err != nil {
 		panic(err)
@@ -28,11 +42,7 @@ func main() {
 		panic(err)
 	}
 	fmt.Printf("%+v", pinger.Statistics())
-	certs, err := cert.NewCerts([]string{"example.com"})
-	if err != nil {
-		panic(err)
-	}
-	fmt.Println(certs)
+	// 硬盘信息
 	dparts, _ := disk.Partitions(false)
 	for _, part := range dparts {
 		u, _ := disk.Usage(part.Mountpoint)
diff --git a/model/alertrule.go b/model/alertrule.go
index 96dafd1..59d98a3 100644
--- a/model/alertrule.go
+++ b/model/alertrule.go
@@ -18,9 +18,10 @@ type Rule struct {
 	// 指标类型，cpu、memory、swap、disk、net_in_speed、net_out_speed
 	// net_all_speed、transfer_in、transfer_out、transfer_all、offline
 	Type     string
-	Min      uint64 // 最小阈值 (百分比、字节 kb ÷ 1024)
-	Max      uint64 // 最大阈值 (百分比、字节 kb ÷ 1024)
-	Duration uint64 // 持续时间 (秒)
+	Min      uint64          // 最小阈值 (百分比、字节 kb ÷ 1024)
+	Max      uint64          // 最大阈值 (百分比、字节 kb ÷ 1024)
+	Duration uint64          // 持续时间 (秒)
+	Ignore   map[uint64]bool //忽略此规则的ID列表
 }
 
 func percentage(used, total uint64) uint64 {
@@ -30,7 +31,11 @@ func percentage(used, total uint64) uint64 {
 	return used * 100 / total
 }
 
+// Snapshot 未通过规则返回 struct{}{}, 通过返回 nil
 func (u *Rule) Snapshot(server *Server) interface{} {
+	if u.Ignore[server.ID] {
+		return nil
+	}
 	var src uint64
 	switch u.Type {
 	case "cpu":
@@ -72,9 +77,9 @@ func (u *Rule) Snapshot(server *Server) interface{} {
 type AlertRule struct {
 	Common
 	Name     string
-	Rules    []Rule `gorm:"-" json:"-"`
 	RulesRaw string
 	Enable   *bool
+	Rules    []Rule `gorm:"-" json:"-"`
 }
 
 func (r *AlertRule) BeforeSave(tx *gorm.DB) error {
diff --git a/resource/template/component/monitor.html b/resource/template/component/monitor.html
index 0a80f26..6910c56 100644
--- a/resource/template/component/monitor.html
+++ b/resource/template/component/monitor.html
@@ -15,7 +15,7 @@
             <div class="field">
                 <label>类型</label>
                 <select name="Type" class="ui fluid dropdown">
-                    <option value="1">HTTP-GET</option>
+                    <option value="1">HTTP-GET(SSL到期、变更)</option>
                     <option value="2">ICMP-Ping</option>
                     <option value="3">TCP-Ping</option>
                 </select>
diff --git a/resource/template/theme-default/service.html b/resource/template/theme-default/service.html
index 0f43f2b..8ac7a21 100644
--- a/resource/template/theme-default/service.html
+++ b/resource/template/theme-default/service.html
@@ -8,7 +8,7 @@
             <div class="ui grid">
                 <div class="three wide column">
                     <p>{{$service.Monitor.Name}}</p>
-                    <p>30天在线率{{divU64 $service.TotalUp (addU64 $service.TotalUp $service.TotalDown)}}%</p>
+                    <p>30天在线率{{float32f (divU64 $service.TotalUp (addU64 $service.TotalUp $service.TotalDown))}}%</p>
                 </div>
                 <div class="eleven wide column">
                     {{range $i,$d := $service.Delay}}
diff --git a/service/alertmanager/alertmanager.go b/service/alertmanager/alertmanager.go
index e56725a..dac2822 100644
--- a/service/alertmanager/alertmanager.go
+++ b/service/alertmanager/alertmanager.go
@@ -133,33 +133,8 @@ func checkStatus() {
 			// 发送通知
 			max, desc := alert.Check(alertsStore[alert.ID][server.ID])
 			if desc != "" {
-				nID := getNotificationHash(server, desc)
-				var flag bool
-				if cacheN, has := dao.Cache.Get(nID); has {
-					nHistory := cacheN.(NotificationHistory)
-					// 每次提醒都增加一倍等待时间，最后每天最多提醒一次
-					if time.Now().After(nHistory.Until) {
-						flag = true
-						nHistory.Duration *= 2
-						if nHistory.Duration > time.Hour*24 {
-							nHistory.Duration = time.Hour * 24
-						}
-						nHistory.Until = time.Now().Add(nHistory.Duration)
-						// 缓存有效期加 10 分钟
-						dao.Cache.Set(nID, nHistory, nHistory.Duration+time.Minute*10)
-					}
-				} else {
-					// 新提醒直接通知
-					flag = true
-					dao.Cache.Set(nID, NotificationHistory{
-						Duration: firstNotificationDelay,
-						Until:    time.Now().Add(firstNotificationDelay),
-					}, firstNotificationDelay+time.Minute*10)
-				}
-				if flag {
-					message := fmt.Sprintf("报警规则：%s，服务器：%s(%s)，%s，逮到咯，快去看看！", alert.Name, server.Name, server.Host.IP, desc)
-					go SendNotification(message)
-				}
+				message := fmt.Sprintf("报警规则：%s，服务器：%s(%s)，%s，逮到咯，快去看看！", alert.Name, server.Name, server.Host.IP, desc)
+				go SendNotification(message)
 			}
 			// 清理旧数据
 			if max > 0 && max < len(alertsStore[alert.ID][server.ID]) {
@@ -170,13 +145,39 @@ func checkStatus() {
 }
 
 func SendNotification(desc string) {
+	// 通知防骚扰策略
+	nID := hex.EncodeToString(md5.New().Sum([]byte(desc)))
+	var flag bool
+	if cacheN, has := dao.Cache.Get(nID); has {
+		nHistory := cacheN.(NotificationHistory)
+		// 每次提醒都增加一倍等待时间，最后每天最多提醒一次
+		if time.Now().After(nHistory.Until) {
+			flag = true
+			nHistory.Duration *= 2
+			if nHistory.Duration > time.Hour*24 {
+				nHistory.Duration = time.Hour * 24
+			}
+			nHistory.Until = time.Now().Add(nHistory.Duration)
+			// 缓存有效期加 10 分钟
+			dao.Cache.Set(nID, nHistory, nHistory.Duration+time.Minute*10)
+		}
+	} else {
+		// 新提醒直接通知
+		flag = true
+		dao.Cache.Set(nID, NotificationHistory{
+			Duration: firstNotificationDelay,
+			Until:    time.Now().Add(firstNotificationDelay),
+		}, firstNotificationDelay+time.Minute*10)
+	}
+
+	if !flag {
+		return
+	}
+
+	// 发出通知
 	notificationsLock.RLock()
 	defer notificationsLock.RUnlock()
 	for i := 0; i < len(notifications); i++ {
 		notifications[i].Send(desc)
 	}
 }
-
-func getNotificationHash(server *model.Server, desc string) string {
-	return hex.EncodeToString(md5.New().Sum([]byte(fmt.Sprintf("%d::%s", server.ID, desc))))
-}
diff --git a/service/rpc/nezha.go b/service/rpc/nezha.go
index e3c1351..da1147e 100644
--- a/service/rpc/nezha.go
+++ b/service/rpc/nezha.go
@@ -3,6 +3,7 @@ package rpc
 import (
 	"context"
 	"fmt"
+	"strings"
 	"time"
 
 	"github.com/naiba/nezha/model"
@@ -21,15 +22,33 @@ func (s *NezhaHandler) ReportTask(c context.Context, r *pb.TaskResult) (*pb.Rece
 		return nil, err
 	}
 	if r.GetType() == model.MonitorTypeHTTPGET {
-		// SSL 证书变更报警
+		// SSL 证书报警
 		var last model.MonitorHistory
 		if err := dao.DB.Where("monitor_id = ?", r.GetId()).Order("id DESC").First(&last).Error; err == nil {
-			if last.Data != "" && last.Data != r.GetData() {
+			var errMsg string
+			if strings.HasPrefix(r.GetData(), "SSL证书错误：") {
+				// 证书错误提醒
+				errMsg = r.GetData()
+			} else {
+				var splits = strings.Split(r.GetData(), "|")
+				// 证书变更提醒
+				if last.Data != "" && last.Data != splits[0] {
+					errMsg = fmt.Sprintf(
+						"SSL证书变更，旧：%s，新：%s。",
+						last.Data, splits[0])
+				}
+				expires, err := time.Parse("2006-01-02 15:04:05 -0700 MST", splits[1])
+				// 证书过期提醒
+				if err == nil && expires.Before(time.Now().AddDate(0, 0, 7)) {
+					errMsg = fmt.Sprintf(
+						"SSL证书将在七天内过期，过期时间：%s。",
+						expires.Format("2006-01-02 15:04:05"))
+				}
+			}
+			if errMsg != "" {
 				var monitor model.Monitor
 				dao.DB.First(&monitor, "id = ?", last.MonitorID)
-				alertmanager.SendNotification(fmt.Sprintf(
-					"监控：%s SSL证书变更，旧：%s，新：%s。",
-					monitor.Name, last.Data, r.GetData()))
+				alertmanager.SendNotification(fmt.Sprintf("服务监控：%s %s", monitor.Name, errMsg))
 			}
 		}
 	}
@@ -38,12 +57,6 @@ func (s *NezhaHandler) ReportTask(c context.Context, r *pb.TaskResult) (*pb.Rece
 	if err := dao.DB.Create(&mh).Error; err != nil {
 		return nil, err
 	}
-	// 更新最后检测时间
-	var m model.Monitor
-	m.ID = r.GetId()
-	if err := dao.DB.Model(&m).Update("last_check", time.Now()).Error; err != nil {
-		return nil, err
-	}
 	return &pb.Receipt{Proced: true}, nil
 }
 
@@ -93,7 +106,7 @@ func (s *NezhaHandler) ReportSystemInfo(c context.Context, r *pb.Host) (*pb.Rece
 		host.IP != "" &&
 		dao.ServerList[clientID].Host.IP != host.IP {
 		alertmanager.SendNotification(fmt.Sprintf(
-			"服务器：%s IP变更提醒，旧IP：%s，新IP：%s。",
+			"IP变更提醒 服务器：%s ，旧IP：%s，新IP：%s。",
 			dao.ServerList[clientID].Name, dao.ServerList[clientID].Host.IP, host.IP))
 	}
 	dao.ServerList[clientID].Host = &host