Azure Log Analytics 不检索 Azure Kubernetes 服务上的 NGINX 入口日志答案

【问题标题】：Azure Log Analytics don't retrieve log of NGINX Ingress on Azure Kubernetes ServiceAzure Log Analytics 不检索 Azure Kubernetes 服务上的 NGINX 入口日志
【发布时间】：2018-11-07 13:56:09
【问题描述】：

我是 Microsoft Azure 上的 Kubernetes 和 NGINX Ingress 的新手。我遇到了一个关于分析 NGINX Ingress 日志的问题。

这是我的 NGINX Ingress pod 中的日志：

duc@Azure:~$ kubectl logs ducphuongkhang-ingress-nginx-ingress-controller-869b8b966-877bq -n kube-system | grep 'lua'

2018/11/06 16:36:55 [warn] 961#961: *10059 [lua] log.lua:52: {"timestamp":1541522215,"method":"GET","uri":"\/vulnerabilities\/sqli\/","id":"dba39b7d7dc8646b779e","client":"10.244.0.1","alerts":[{"match":1,"msg":"SQL String Termination","id":41003},{"match":1,"msg":"SQL probing attempt","id":41032},{"logdata":8,"match":8,"msg":"Request score greater than score threshold","id":99001}]} while logging request, client: 10.244.0.1, server: dvwa.thesis.analyticsvn.com, request: "GET /vulnerabilities/sqli/?id=%27&Submit=Submit HTTP/2.0", host: "dvwa.thesis.analyticsvn.com", referrer: "https://dvwa.thesis.analyticsvn.com/vulnerabilities/sqli/?id=1%3D1&Submit=Submit"
2018/11/06 16:37:02 [warn] 961#961: *10059 [lua] log.lua:52: {"timestamp":1541522222,"method":"GET","uri":"\/vulnerabilities\/sqli\/","id":"4ac4e0dfe317dcd86346","client":"10.244.0.1","alerts":[{"match":1,"msg":"SQL String Termination","id":41003},{"match":1,"msg":"SQL probing attempt","id":41032},{"logdata":8,"match":8,"msg":"Request score greater than score threshold","id":99001}]} while logging request, client: 10.244.0.1, server: dvwa.thesis.analyticsvn.com, request: "GET /vulnerabilities/sqli/?id=%27&Submit=Submit HTTP/2.0", host: "dvwa.thesis.analyticsvn.com", referrer: "https://dvwa.thesis.analyticsvn.com/vulnerabilities/sqli/?id=1%3D1&Submit=Submit"
2018/11/06 16:37:02 [warn] 961#961: *10059 [lua] log.lua:52: {"timestamp":1541522222,"method":"GET","uri":"\/vulnerabilities\/sqli\/","id":"d0eae7d54dc99773ecc0","client":"10.244.0.1","alerts":[{"match":1,"msg":"SQL String Termination","id":41003},{"match":1,"msg":"SQL probing attempt","id":41032},{"logdata":8,"match":8,"msg":"Request score greater than score threshold","id":99001}]} while logging request, client: 10.244.0.1, server: dvwa.thesis.analyticsvn.com, request: "GET /vulnerabilities/sqli/?id=%27&Submit=Submit HTTP/2.0", host: "dvwa.thesis.analyticsvn.com", referrer: "https://dvwa.thesis.analyticsvn.com/vulnerabilities/sqli/?id=1%3D1&Submit=Submit"
2018/11/06 16:37:03 [warn] 961#961: *10059 [lua] log.lua:52: {"timestamp":1541522223,"method":"GET","uri":"\/vulnerabilities\/sqli\/","id":"be18d7e7800e86789d5d","client":"10.244.0.1","alerts":[{"match":1,"msg":"SQL String Termination","id":41003},{"match":1,"msg":"SQL probing attempt","id":41032},{"logdata":8,"match":8,"msg":"Request score greater than score threshold","id":99001}]} while logging request, client: 10.244.0.1, server: dvwa.thesis.analyticsvn.com, request: "GET /vulnerabilities/sqli/?id=%27&Submit=Submit HTTP/2.0", host: "dvwa.thesis.analyticsvn.com", referrer: "https://dvwa.thesis.analyticsvn.com/vulnerabilities/sqli/?id=1%3D1&Submit=Submit"

这是我的 Azure 分析日志查询，它没有返回值：

ContainerLog | where LogEntry contains "lua"

我想使用 Azure Log Analytics 收集由 NGINX Ingress（启用 lua-resty-waf）生成的日志。请帮我到达那里。

谢谢。

【问题讨论】：

标签： nginx azure-log-analytics azure-aks

【解决方案1】：

经过研究，我发现 Kubernetes 中带有 OMS 代理的 Azure Log Analytics 不支持在命名空间“kube-system”中收集数据。在另一个命名空间中部署 Ingress 将允许 Log Analytics 收集日志。

参考：https://github.com/Azure/AKS/issues/293

$ kubectl describe deployments omsagent-rs -n kube-system
Pod Template:
  Labels:           rsName=omsagent-rs
  Annotations:      agentVersion=1.6.0-42
                    dockerProviderVersion=2.0.0-3
  Service Account:  omsagent
    Environment:
      DISABLE_KUBE_SYSTEM_LOG_COLLECTION:  true

【讨论】：