Error: spawn */chrome-linux/chrome EAGAIN on puppeteer launch

Issue description:

An error occurred in my production environment and then my program exist ^_^, the error stack is as follows:

Error 1:

TypeError: input.on is not a function
    at new Interface (readline.js:174:11)
    at Object.createInterface (readline.js:64:10)
    at Promise (/users/hacker/fb/mimi/mimi/node_modules/puppeteer/lib/Launcher.js:327:25)
    at Promise (<anonymous>)
    at waitForWSEndpoint (/users/hacker/fb/mimi/mimi/node_modules/puppeteer/lib/Launcher.js:326:10)
    at Launcher.launch (/users/hacker/fb/mimi/mimi/node_modules/puppeteer/lib/Launcher.js:166:41)
    at module.exports.launch (/users/hacker/fb/mimi/mimi/node_modules/puppeteer/lib/Puppeteer.js:36:27)
    at runScript (/users/hacker/fb/mimi/mimi/scripts/index.js:61:37)
    at keepaliveDefaultStratery (/users/hacker/fb/mimi/mimi/beat/keepAliveSchedule.js:218:22)
    at joinCore (/users/hacker/fb/mimi/mimi/beat/keepAliveSchedule.js:180:20)
    at main (/users/hacker/fb/mimi/mimi/beat/keepAliveSchedule.js:117:28)
    at <anonymous>

Error 2： by process.nextTick

Error: spawn /users/hacker/fb/mimi/mimi/node_modules/puppeteer/.local-chromium/linux-609904/chrome-linux/chrome EAGAIN
    at _errnoException (util.js:1041:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:192:19)
    at onErrorNT (internal/child_process.js:374:16)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickDomainCallback (internal/process/next_tick.js:218:9)

Error analysis:

1. An EAGAIN error occurred when lunch puppeteer, It will be return and does not execute the following code, such as setting stderr for child_process object (chromeProcess object). code
2. waitForWSEndpoint method will use the stderr property. At this time, The stderr property is undefined but will call stderr.on method, So the error 1 will be occurred. code
3. child_process.js will trigger an error by process.nextTick, Puppeteer does not listening error event because Error 1. So the error didn’t catch. Program exist. code

Solution

Set the listen error event before chromeProcess.stderr. Allowing chromeProcess to handle error events.

const exitListenerId = helper.addEventListener(chromeProcess, 'exit', () => onClose());
const errorListenerId = helper.addEventListener(chromeProcess, 'error', error => onClose(error))
const rl = readline.createInterface({ input: chromeProcess.stderr });
let stderr = '';
const listeners = [
  helper.addEventListener(rl, 'line', onLine),
  helper.addEventListener(rl, 'close', () => onClose()),
  exitListenerId,
  errorListenerId
];
const timeoutId = timeout ? setTimeout(onTimeout, timeout) : 0;

[aslushnikov]

@nicoandmee this error might happen when Puppeteer fails to launch Chrome. It might be because the host env runs out of file handles limit or maybe something else - I’m not sure yet, but it’d be nice to re-create this locally to see what’s going on.

[mohini-memane]

Issue description:

An error occurred in my production environment and then my program exist ^_^, the error stack is as follows:

Error 1:

TypeError: input.on is not a function
    at new Interface (readline.js:174:11)
    at Object.createInterface (readline.js:64:10)
    at Promise (/users/hacker/fb/mimi/mimi/node_modules/puppeteer/lib/Launcher.js:327:25)
    at Promise (<anonymous>)
    at waitForWSEndpoint (/users/hacker/fb/mimi/mimi/node_modules/puppeteer/lib/Launcher.js:326:10)
    at Launcher.launch (/users/hacker/fb/mimi/mimi/node_modules/puppeteer/lib/Launcher.js:166:41)
    at module.exports.launch (/users/hacker/fb/mimi/mimi/node_modules/puppeteer/lib/Puppeteer.js:36:27)
    at runScript (/users/hacker/fb/mimi/mimi/scripts/index.js:61:37)
    at keepaliveDefaultStratery (/users/hacker/fb/mimi/mimi/beat/keepAliveSchedule.js:218:22)
    at joinCore (/users/hacker/fb/mimi/mimi/beat/keepAliveSchedule.js:180:20)
    at main (/users/hacker/fb/mimi/mimi/beat/keepAliveSchedule.js:117:28)
    at <anonymous>

Error 2： by process.nextTick

Error: spawn /users/hacker/fb/mimi/mimi/node_modules/puppeteer/.local-chromium/linux-609904/chrome-linux/chrome EAGAIN
    at _errnoException (util.js:1041:11)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:192:19)
    at onErrorNT (internal/child_process.js:374:16)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)
    at process._tickDomainCallback (internal/process/next_tick.js:218:9)

Error analysis:

1. An EAGAIN error occurred when lunch puppeteer, It will be return and does not execute the following code, such as setting stderr for child_process object (chromeProcess object). code
2. waitForWSEndpoint method will use the stderr property. At this time, The stderr property is undefined but will call stderr.on method, So the error 1 will be occurred. code
3. child_process.js will trigger an error by process.nextTick, Puppeteer does not listening error event because Error 1. So the error didn’t catch. Program exist. code

Solution

Set the listen error event before chromeProcess.stderr. Allowing chromeProcess to handle error events.

const exitListenerId = helper.addEventListener(chromeProcess, 'exit', () => onClose());
const errorListenerId = helper.addEventListener(chromeProcess, 'error', error => onClose(error))
const rl = readline.createInterface({ input: chromeProcess.stderr });
let stderr = '';
const listeners = [
  helper.addEventListener(rl, 'line', onLine),
  helper.addEventListener(rl, 'close', () => onClose()),
  exitListenerId,
  errorListenerId
];
const timeoutId = timeout ? setTimeout(onTimeout, timeout) : 0;

M facing the error TypeError: input.on is not a function in red hat 7.8 and have made the changes as suggested in waitForWSEndpoint Still facing the same issue

Error: input.on is not a function\n at new Interface (readline.js:207:11)\n at Object.createInterface (readline.js:75:10)\n at Promise (/apps/cbqpms/credence/microservices/reporting-server/node_modules/puppeteer/lib/Launcher.js:329:27)\n at new Promise (<anonymous>)\n at waitForWSEndpoint (/apps/cbqpms/credence/microservices/reporting-server/node_modules/puppeteer/lib/Launcher.js:326:12)\n at Launcher.launch (/apps/cbqpms/credence/microservices/reporting-server/node_modules/puppeteer/lib/Launcher.js:170:41)