Hi. I am getting the following error from prisma very often now. I am using 

prisma1

 + 

mongo

GraphQL Error: {
  "0": "<",
  "1": "h",
  "2": "t",
  "3": "m",
  "4": "l",
  "5": ">",
  "6": "\r",
  "7": "\n",
  "8": "<",
  "9": "h",
  "10": "e",
  "11": "a",
  "12": "d",
  "13": ">",
  "14": "<",
  "15": "t",
  "16": "i",
  "17": "t",
  "18": "l",
  "19": "e",
  "20": ">",
  "21": "5",
  "22": "0",
  "23": "2",
  "24": " ",
  "25": "B",
  "26": "a",
  "27": "d",
  "28": " ",
  "29": "G",
  "30": "a",
  "31": "t",
  "32": "e",
  "33": "w",
  "34": "a",
  "35": "y",
  "36": "<",
  "37": "/",
  "38": "t",
  "39": "i",
  "40": "t",
  "41": "l",
  "42": "e",
  "43": ">",
  "44": "<",
  "45": "/",
  "46": "h",
  "47": "e",
  "48": "a",
  "49": "d",
  "50": ">",
  "51": "\r",
  "52": "\n",
  "53": "<",
  "54": "b",
  "55": "o",
  "56": "d",
  "57": "y",
  "58": " ",
  "59": "b",
  "60": "g",
  "61": "c",
  "62": "o",
  "63": "l",
  "64": "o",
  "65": "r",
  "66": "=",
  "67": "\"",
  "68": "w",
  "69": "h",
  "70": "i",
  "71": "t",
  "72": "e",
  "73": "\"",
  "74": ">",
  "75": "\r",
  "76": "\n",
  "77": "<",
  "78": "c",
  "79": "e",
  "80": "n",
  "81": "t",
  "82": "e",
  "83": "r",
  "84": ">",
  "85": "<",
  "86": "h",
  "87": "1",
  "88": ">",
  "89": "5",
  "90": "0",
  "91": "2",
  "92": " ",
  "93": "B",
  "94": "a",
  "95": "d",
  "96": " ",
  "97": "G",
  "98": "a",
  "99": "t",
  "100": "e",
  "101": "w",
  "102": "a",
  "103": "y",
  "104": "<",
  "105": "/",
  "106": "h",
  "107": "1",
  "108": ">",
  "109": "<",
  "110": "/",
  "111": "c",
  "112": "e",
  "113": "n",
  "114": "t",
  "115": "e",
  "116": "r",
  "117": ">",
  "118": "\r",
  "119": "\n",
  "120": "<",
  "121": "h",
  "122": "r",
  "123": ">",
  "124": "<",
  "125": "c",
  "126": "e",
  "127": "n",
  "128": "t",
  "129": "e",
  "130": "r",
  "131": ">",
  "132": "n",
  "133": "g",
  "134": "i",
  "135": "n",
  "136": "x",
  "137": "/",
  "138": "1",
  "139": ".",
  "140": "1",
  "141": "4",
  "142": ".",
  "143": "0",
  "144": " ",
  "145": "(",
  "146": "U",
  "147": "b",
  "148": "u",
  "149": "n",
  "150": "t",
  "151": "u",
  "152": ")",
  "153": "<",
  "154": "/",
  "155": "c",
  "156": "e",
  "157": "n",
  "158": "t",
  "159": "e",
  "160": "r",
  "161": ">",
  "162": "\r",
  "163": "\n",
  "164": "<",
  "165": "/",
  "166": "b",
  "167": "o",
  "168": "d",
  "169": "y",
  "170": ">",
  "171": "\r",
  "172": "\n",
  "173": "<",
  "174": "/",
  "175": "h",
  "176": "t",
  "177": "m",
  "178": "l",
  "179": ">",
  "180": "\r",
  "181": "\n",
  "status": 502
}

I am stuck here. What could be the reason? If I wait, half an hour, and send no query, this error would usually go away. It just says GraphQL error :  

bad gateway

Seems like your nginx/ubuntu server is returning 502 bad gateway response. You need to check your server logs what really went wrong.

Are you sure this is because of nginx/ubuntu? No issue with Prisma?

Yes. The error above is actually html response from your server and converted to Json response by character.

I'll check this. Why does it say

GraphQL error

at the beginning of the message?

I’m not sure about that. You need to check server error logs to find out more.

I am checking

@Suhail You need to allocate more memory. It crashes because its out of memory

Yes @joar is correct. This is a memory issue so you would need to allocate more memory.

What is the recommended size? I see CPU usage taking a hit when I run prisma with mongo.

How much is allocated currently?

You would need to provide more memory via the

JAVA_OPTS

option while deploying the Prisma Server. Try adding 50 % more of what you have and deploy.

Do I need to do it before the deployment? Will the sequence matter?

Yes you would need to add it the options in the docker image as specified here.

Could you please give a sample value?

I’m not sure how you have deployed your Prisma server, but if it’s using docker then a sample value would be something like this in added to the environment variable: Key: JAVA_OPTS Value: -Xmx2048m This will allocate 2 GB to the Max heap memory

I had deployed using the docker-compose.yml as suggested in the documentation. Here is also the screenshot of my docker-compose.yml

Then you would need to add it in this manner:

prisma:
    image: prismagraphql/prisma:1.34
    restart: always
    ports:
      - '4466:4466'
    environment:
      JAVA_OPTS: '-Xmx2048m'
      PRISMA_CONFIG: |
        port: 4466
        databases:
          default:
            connector: mongo
            uri: <uri>

Should I increase the heap size to 4096 MB

Yes you could increase it to 4GB

I changed my kubernetes yaml yml as follows

Could you run

docker-compose up

after running

docker-compose down

again? Also if possible inspect the server and check if it has been applied as this is the way the option is added.

You should be fine at 8GB

Okay.