fix(promtail): 修 Sprintf 缺参导致清单非法 + Ingress 模板固定命名空间 + 资源名去 opsxloki
=== 一、致命 bug:Promtail 清单第 10 个 %s 缺参数(导致日志采集中断)=== go vet 报:"format %s reads arg #10, but call has 9 args"。 模板里 DaemonSet 的 `namespace: %s`(第 9 个)和 `image: %s`(第 10 个) 是两个独立占位符,但 Sprintf 只传了 9 个参数,第 10 个变成 %!s(MISSING), 整个多文档 YAML 解析失败: "解析 Kubernetes YAML: yaml: line 23: found character that cannot start any token" 而 installDaemonset 是「先删 daemonset/configmap/serviceaccount 再 apply」, 所以每次失败都会把上一份 Promtail 删掉却不重建 → 日志采集中断。 修复: 1) Sprintf 补上 DaemonSet 命名空间参数(第 9 位) 2) 新增 validateManifest():在删旧资源之前先本地解析校验清单, 校验不过直接中止、不碰任何现有资源 —— 让模板错误永远不会再打断采集 3) 新增回归测试 promtail_manifest_test.go:用平台同一套 YAMLOrJSONDecoder 解析 3 种参数组合,断言各解析出 5 个对象且无 TAB === 二、快捷 LogQL:Ingress 访问日志不再跟随所选命名空间 === 原实现:next = applyLabelFilter(next,'namespace', namespace.trim() || 'ingress-nginx') → 选了 monitor 就生成 {namespace="monitor"} |= "HTTP/",查不到任何日志 (ingress controller 的 Pod 只在 ingress-nginx 命名空间里) 修复:ingress 模板独立处理 - 固定用 ingress controller 命名空间(ingress-nginx,缺失则回退 ingress) - 不叠加当前选中的 app / pod 过滤(那些属于业务服务) - 结果是 {namespace="ingress-nginx"} |= "HTTP/" === 三、K8s 资源名去掉 opsxloki === ClusterRole / ClusterRoleBinding:opsxloki-promtail → loki-promtail - PromtailDaemonsetYAML 里 3 处 name 全部改名 - uninstallDaemonset 同步改名,并保留对旧名 opsxloki-promtail 的兼容清理, 避免升级后留下孤儿 ClusterRole - 集群侧已实测:新建 loki-promtail,旧的 opsxloki-promtail 已删除 保留的 opsxloki(有兼容性约束,改动会丢数据/掉登录): - Go module 导入路径 opsxloki/xxx(149 处,纯内部包名) - 数据文件 opsxloki.json(改了读不到历史数据) - 前端 localStorage key opsxloki.auth.* / opsxloki.theme.* 等(改了在线用户掉登录) - Dockerfile 里的 opsxloki 系统用户/二进制名 镜像:lghost/lokistack:latest + v0.1 = sha256:4a5590580cbb
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@@ -200,12 +200,20 @@ func (d *CollectorDeployer) installDaemonset(ctx context.Context, endpoint strin
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clusterName = cluster.Name
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}
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manifest := PromtailDaemonsetYAML(ns, endpoint, clusterName, d.collector.Labels,
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d.collector.TargetNamespaces, d.collector.AppLabelSource, d.collector.AppInclude)
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// 关键顺序:先本地校验清单,再删旧资源。
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// 否则模板有误时会出现「旧 DaemonSet 已删、新的建不出来」→ 日志采集直接中断。
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if err := validateManifest(manifest); err != nil {
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d.log("error", fmt.Sprintf("生成的 Promtail 清单无效,已中止且未改动现有资源: %v", err), "")
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return fmt.Errorf("Promtail 清单校验失败(现有采集器未受影响): %w", err)
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}
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// 删除历史残留并通过 Kubernetes API 提交资源。
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for _, kind := range []string{"daemonset", "configmap", "serviceaccount"} {
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_ = deleteK8sResource(ctx, cluster, kind, ns, "promtail")
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}
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manifest := PromtailDaemonsetYAML(ns, endpoint, clusterName, d.collector.Labels,
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d.collector.TargetNamespaces, d.collector.AppLabelSource, d.collector.AppInclude)
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if err := d.applyYAML(ctx, nil, manifest, "promtail"); err != nil {
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return err
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}
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@@ -245,7 +253,13 @@ func (d *CollectorDeployer) uninstallDaemonset(ctx context.Context) error {
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if ns == "" {
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ns = "log"
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}
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for _, item := range [][2]string{{"daemonset", "promtail"}, {"configmap", "promtail"}, {"serviceaccount", "promtail"}, {"clusterrole", "opsxloki-promtail"}, {"clusterrolebinding", "opsxloki-promtail"}} {
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// clusterrole / clusterrolebinding 用 loki-promtail;
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// 旧版本曾用 opsxloki-promtail,这里一并清理以免升级后留下孤儿资源。
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for _, item := range [][2]string{
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{"daemonset", "promtail"}, {"configmap", "promtail"}, {"serviceaccount", "promtail"},
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{"clusterrole", "loki-promtail"}, {"clusterrolebinding", "loki-promtail"},
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{"clusterrole", "opsxloki-promtail"}, {"clusterrolebinding", "opsxloki-promtail"},
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} {
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if err := deleteK8sResource(ctx, cluster, item[0], ns, item[1]); err != nil {
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return err
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}
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@@ -287,7 +287,7 @@ metadata:
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRole
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metadata:
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name: opsxloki-promtail
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name: loki-promtail
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rules:
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- apiGroups: [""]
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resources: ["pods", "nodes"]
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@@ -296,11 +296,11 @@ rules:
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apiVersion: rbac.authorization.k8s.io/v1
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kind: ClusterRoleBinding
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metadata:
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name: opsxloki-promtail
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name: loki-promtail
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roleRef:
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apiGroup: rbac.authorization.k8s.io
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kind: ClusterRole
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name: opsxloki-promtail
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name: loki-promtail
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subjects:
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- kind: ServiceAccount
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name: promtail
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@@ -482,7 +482,7 @@ spec:
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- name: containers
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hostPath:
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path: /var/lib/docker/containers
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`, ns, ns, ns, lokiURL, extLabels, nsFilter, appSourceLine, promtailImage, appIncludeFilter)
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`, ns, ns, ns, lokiURL, extLabels, nsFilter, appSourceLine, appIncludeFilter, ns, promtailImage)
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}
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// FluentbitConfig Sidecar 模式 Fluent Bit 配置(采集 logPath,推送至 lokiHost:lokiPort)
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@@ -39,6 +39,39 @@ func ensureNamespace(ctx context.Context, cluster *models.Cluster, namespace str
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return err
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}
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// validateManifest 只做本地 YAML 解析校验,不访问集群。
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//
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// 用途:采集器 install 流程是「先删旧资源再 apply」,一旦模板生成有误
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// (例如 fmt.Sprintf 占位符错位产生 %!s(MISSING)),就会出现
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// 「旧的已删、新的没建成」→ 日志采集中断。所以在删之前先跑一遍解析。
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func validateManifest(manifest string) error {
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decoder := yamlutil.NewYAMLOrJSONDecoder(strings.NewReader(manifest), 4096)
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count := 0
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for {
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var raw map[string]interface{}
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if err := decoder.Decode(&raw); err == io.EOF {
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break
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} else if err != nil {
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return fmt.Errorf("解析 Kubernetes YAML: %w", err)
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}
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if len(raw) == 0 {
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continue
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}
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obj := &unstructured.Unstructured{Object: raw}
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if obj.GetKind() == "" || obj.GetAPIVersion() == "" {
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return fmt.Errorf("清单缺少 apiVersion/kind")
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}
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if obj.GetName() == "" {
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return fmt.Errorf("Kubernetes %s 缺少 metadata.name", obj.GetKind())
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}
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count++
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}
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if count == 0 {
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return fmt.Errorf("清单为空")
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}
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return nil
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}
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// applyManifest 使用 API Server 的 server-side apply,保留已有 YAML 模板与字段所有权。
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func applyManifest(ctx context.Context, cluster *models.Cluster, manifest string) error {
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cfg, err := clusterRESTConfig(cluster, 30*time.Second)
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@@ -0,0 +1,66 @@
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package services
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import (
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"bytes"
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"io"
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"strings"
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"testing"
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"k8s.io/apimachinery/pkg/util/yaml"
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)
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// 复现平台 install 时的 YAML 解析,定位非法 token
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func TestPromtailManifestParses(t *testing.T) {
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cases := []struct {
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name string
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labels string
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ns []string
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src string
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inc []string
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}{
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{"空labels+空ns+空来源", "", nil, "", nil},
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{"正常labels", `{"cluster":"pre-k8s"}`, []string{"astralx", "log"}, "k8s.kuboard.cn/name", []string{"cex-spot-api"}},
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{"空labels但带ns", "", []string{"astralx"}, "controller_name", []string{"a", "b"}},
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}
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for _, c := range cases {
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t.Run(c.name, func(t *testing.T) {
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out := PromtailDaemonsetYAML("log", "http://loki.log.svc.cluster.local:3100", "pre-k8s", c.labels, c.ns, c.src, c.inc)
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// 1) 扫控制字符
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for i, line := range strings.Split(out, "\n") {
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if strings.ContainsRune(line, '\t') {
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t.Errorf("line %d contains TAB: %q", i+1, line)
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}
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}
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// 2) 用平台同一套 decoder 解析
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dec := yaml.NewYAMLOrJSONDecoder(bytes.NewReader([]byte(out)), 4096)
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n := 0
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for {
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var raw map[string]interface{}
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if err := dec.Decode(&raw); err == io.EOF {
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break
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} else if err != nil {
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lines := strings.Split(out, "\n")
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// 打印报错行附近
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var from, to int
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if len(lines) > 30 {
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from, to = 1, 30
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} else {
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from, to = 1, len(lines)
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}
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for i := from - 1; i < to && i < len(lines); i++ {
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t.Logf("%3d| %q", i+1, lines[i])
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}
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t.Fatalf("YAML decode failed: %v", err)
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}
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n++
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}
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t.Logf("解析出 %d 个对象", n)
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if n < 4 {
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t.Errorf("期望 >=4 个对象(SA/ClusterRole/CRB/ConfigMap/DaemonSet),实际 %d", n)
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}
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})
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}
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}
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@@ -6,6 +6,9 @@ import { applyLabelFilter, extractSelector } from '../query-utils'
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type Template = 'app' | 'error' | 'warn' | 'pod' | 'ingress'
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/** Ingress 访问日志所在命名空间候选(按顺序取第一个实际存在的) */
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const INGRESS_NAMESPACE_CANDIDATES = ['ingress-nginx', 'ingress']
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function selectorOf(labels: Record<string, string>) {
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const entries = Object.entries(labels).filter(([, value]) => value.trim())
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if (entries.length === 0) return ''
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@@ -117,15 +120,26 @@ export function QuickQueryTemplates({ sourceId, query, onQueryChange, compact }:
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}
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function generate(template: Template) {
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// Ingress 访问日志与当前选中的业务命名空间无关:
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// ingress controller 的 Pod 只在它自己的命名空间(ingress-nginx / ingress)里,
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// 所以这里固定用该命名空间,并且不叠加 app / pod 过滤(那些属于业务服务)。
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// 原实现 `namespace.trim() || 'ingress-nginx'` 会导致选了 monitor 就变成
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// {namespace="monitor"} |= "HTTP/",一条都查不到。
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if (template === 'ingress') {
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const ingressNs =
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INGRESS_NAMESPACE_CANDIDATES.find((n) => namespaces.includes(n)) ??
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INGRESS_NAMESPACE_CANDIDATES[0]
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onQueryChange(`{namespace="${ingressNs}"} |= "HTTP/"`)
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return
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}
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let next = extractSelector(query) || '{}'
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if (template === 'ingress') next = applyLabelFilter(next, 'namespace', namespace.trim() || 'ingress-nginx')
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else if (namespace.trim()) next = applyLabelFilter(next, 'namespace', namespace.trim())
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if (namespace.trim()) next = applyLabelFilter(next, 'namespace', namespace.trim())
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if (app.trim()) next = applyLabelFilter(next, appLabel, app.trim())
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if (pod.trim()) next = applyLabelFilter(next, 'pod', pod.trim())
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if (next === '{}') return
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if (template === 'error') next += ' |= "error"'
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if (template === 'warn') next += ' |= "warn"'
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if (template === 'ingress') next += ' |= "HTTP/"'
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onQueryChange(next)
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}
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