Should write crossdomain.xml automatically for k8s volume.

[winlinvip]

Description'

Please ensure that the markdown structure is maintained.

Please describe the issue you encountered here.
'
Make sure to maintain the markdown structure.

1. SRS version: 3.0.112

Replay

How to replay bug?

Steps to reproduce the bug

Steps to reproduce the bug:

1. Create a shared volume in k8s for SRS and Nginx to share HLS distribution directory.
2. When the disk is in emptyDir mode, the crossdomain.xml file cannot be found when playing HLS with Flash.
3. Access: http://39.107.238.185/crossdomain.xml

Expected behavior:

Make sure to maintain the markdown structure.

When SRS starts the HTTP Server, if the HTTP root directory does not exist, write the default crossdomain.xml.

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[winlinvip]

crossdomain.xml can be set as default:

<cross-domain-policy>
  <allow-access-from domain="*"/>
</cross-domain-policy>

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[winlinvip]

index.html can be set as default: https://github.com/ossrs/srs-docker/blob/v3/index.html

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[winlinvip]

There is another one, console: http://localhost:1985/console

[root@ee1f99606509 srs]# ll objs/nginx/html/console/
-rw-r--r-- 1 root root   32 Dec 26 13:11 README.md
-rw-r--r-- 1 root root 3676 Dec 26 13:11 en_index.html
-rw-r--r-- 1 root root  263 Dec 26 13:11 index.html
drwxr-xr-x 6 root root 4096 Dec 26 13:52 js
-rw-r--r-- 1 root root 3711 Dec 26 13:11 ng_index.html
drwxr-xr-x 2 root root 4096 Dec 26 13:11 views

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[winlinvip]

A simple approach is to start another container and copy the default files of SRS to the shared volume.

For example, for Deployment:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: srs-deployment
  labels:
    app: srs
spec:
  replicas: 1
  selector:
    matchLabels:
      app: srs
  template:
    metadata:
      labels:
        app: srs
    spec:
      volumes:
      - name: cache-volume
        emptyDir: {}
      containers:
      - name: srs
        image: ossrs/srs:3
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 1935
        - containerPort: 1985
        - containerPort: 8080
        volumeMounts:
        - name: cache-volume
          mountPath: /usr/local/srs/objs/nginx/html
          readOnly: false
      - name: nginx
        image: nginx
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 80
        volumeMounts:
        - name: cache-volume
          mountPath: /usr/share/nginx/html
          readOnly: true
      - name: srs-cp-files
        image: ossrs/srs:3
        imagePullPolicy: IfNotPresent
        volumeMounts:
        - name: cache-volume
          mountPath: /tmp/html
          readOnly: false
        command: ["/bin/sh"]
        args:
        - "-c"
        - >
          if [[ ! -f /tmp/html/index.html ]]; then
            cp -R ./objs/nginx/html/* /tmp/html
          fi &&
          sleep infinity

Among them, the srs-cp-files container is responsible for copying files and then sleeping continuously.

Validation successful:

• http://r.ossrs.net/
• http://r.ossrs.net/crossdomain.xml
• http://r.ossrs.net:1985/console

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[winlinvip]

Player migration completed:
http://ossrs.net/players?autostart=true

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