JSreport on Alpine Docker image missing symbols

Rogier Doekes

We are trying to package JSreport in a Docker for running on Kubernetes.
Our server.js reads a config file where we use environment variables. We get the docker to compile and run. The studio comes up.
However, we have some issues with chrome and puppeteer on Alpine when rendering reports. So far we included the following chromium dependencies

RUN apk update &&
wget https://pkgs.alpinelinux.org/package/edge/main/x86/libbsd && apk add --no-cache libbsd && _
apk add --no-cache gcompat nss cairo pango at-spi2-core-doc at-spi2-atk nspr atk cups-dev libdrm libxkbcommon libxcomposite libxdamage libxfixes libxrandr mesa-gbm alsa-lib &&
apk upgrade

The running container ldd chrome | grep not gives us these missing symbols:

Error relocating chrome: __vsnprintf_chk: symbol not found
Error relocating chrome: __vfprintf_chk: symbol not found
Error relocating chrome: __memcpy_chk: symbol not found
Error relocating chrome: __res_nclose: symbol not found
Error relocating chrome: __res_ninit: symbol not found
Error relocating chrome: __memset_chk: symbol not found
Error relocating chrome: __fprintf_chk: symbol not found
Error relocating chrome: __snprintf_chk: symbol not found
Error relocating chrome: __longjmp_chk: symbol not found
Error relocating chrome: __mbrlen: symbol not found
Error relocating chrome: strtoll_l: symbol not found
Error relocating chrome: strtoull_l: symbol not found
Error relocating chrome: gnu_get_libc_version: symbol not found
Error relocating chrome: __fdelt_chk: symbol not found
Error relocating chrome: backtrace: symbol not found
Error relocating chrome: __strncat_chk: symbol not found
Error relocating chrome: __sched_cpualloc: symbol not found
Error relocating chrome: __sched_cpufree: symbol not found
Error relocating chrome: __close: symbol not found
Error relocating chrome: initstate_r: symbol not found
Error relocating chrome: random_r: symbol not found
Error relocating chrome: __memmove_chk: symbol not found
Error relocating chrome: __register_atfork: symbol not found
Error relocating chrome: __longjmp_chk: symbol not found
Error relocating chrome: __libc_stack_end: symbol not found

Which additional Alpine packages do we need to include in our Dockerfile to ensure jsreport works correctly on Alpine?

jan_blaha

Any reason why not to use our official image as a base? This would make sure you get always the right deps. Here is docummentation
https://jsreport.net/learn/docker

If you really need to build the image from the scratch, you can get inspiration in our Dockerfile
https://github.com/jsreport/jsreport/blob/master/packages/jsreport/docker/default/Dockerfile

Rogier Doekes

Our business case is that we would like to run multiple jsreport images each with their own MS Azure Storage Account. So for each instance we have an account/key pair.

What would be the correct environment variables we need to use to connect to the storage account where the templates are persisted?

jan_blaha

here is described how to translate configuration objects into environment variables
https://jsreport.net/learn/configuration#environment-variables

If you plan to store templates into the azure blob storage, then you want to look here
https://jsreport.net/learn/fs-store#azure-storage

Rogier Doekes

This is what we end of doing:

jsreport.config.json

{
  "store": {
    "provider": "fs"
  },
  "mountOnAppPath": true, 
  "trustUserCode": true,
  "extensions": {
    "fs-store": {
      "persistence": {
        "provider": "azure-storage"
      }
    },
    "fs-store-azure-storage-persistence": {
      "accountName": "x",
      "accountKey": "xx"
    }
  }
}

This is the Dockerfile to create [name].azurecr.io/my-jsreport-image:1.1

FROM jsreport/jsreport:3.9.0
COPY --chown=jsreport:jsreport jsreport.config.json /app
#add here the license key
COPY --chown=jsreport:jsreport license-key.txt /app
RUN npm install @jsreport/jsreport-fs-store-azure-storage-persistence

The deployment to Kubernetes was this

apiVersion: apps/v1
kind: Deployment
metadata:
  name: jsreport
  labels:
    app: jsreport
spec:
  replicas: 1
  selector:
    matchLabels:
      app: jsreport
  template:
    metadata:
      labels:
        app: jsreport
    spec:
      serviceAccountName: jsreport
      containers:
      - name: jsreport
        image: [name].azurecr.io/my-jsreport-image:1.1
        ports: 
        - containerPort: 5488
        resources:
            requests:
              memory: 512Mi
              cpu: "250m"
            limits:
              memory: 3Gi
              cpu: "2"
        env:
        - name: extensions_fsStoreAzureStoragePersistence_accountName
		  value: [account name]
        - name: extensions_fsStoreAzureStoragePersistence_accountKey
          value:  [account key]