Error getaddrinfo EAI_AGAIN after running out of memory

dave1904

Hi,

last week my droplet running nodebb ran out of memory. After resizing I could start nodebb again without problems but now I have problems fetching URLs with a getaddrinfo EAI_AGAIN error. After googling it could be a problem due to dns lookup.

I can't fetch the current nodebb version in acp for example:

2024-02-17T10:35:42.107Z [4567/138146] - error: [acp] Failed to fetch latest version
TypeError: fetch failed
    at Object.fetch (node:internal/deps/undici/undici:11730:11)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async call (/home/nodebb/NodeBB/src/request.js:36:19)
    at async getLatestVersion (/home/nodebb/NodeBB/src/admin/versions.js:22:44)
    at async getLatestVersion (/home/nodebb/NodeBB/src/middleware/render.js:500:11)
    at async Promise.all (index 4)
    at async loadAdminHeaderFooterData (/home/nodebb/NodeBB/src/middleware/render.js:253:19)
    at async loadHeaderFooterData (/home/nodebb/NodeBB/src/middleware/render.js:137:11)
    at async renderMethod (/home/nodebb/NodeBB/src/middleware/render.js:87:30)
    at async ServerResponse.renderOverride [as render] (/home/nodebb/NodeBB/src/middleware/render.js:111:5)

I also have problems fetching the used url in the rss widget plugin:

Loading Jenkler RSS widget 3.2.10001
Error: getaddrinfo EAI_AGAIN news.google.com
    at GetAddrInfoReqWrap.onlookupall [as oncomplete] (node:dns:118:26)
    at GetAddrInfoReqWrap.callbackTrampoline (node:internal/async_hooks:130:17) {
  errno: -3001,
  code: 'EAI_AGAIN',
  syscall: 'getaddrinfo',
  hostname: 'news.google.com'
}

I also cannot send emails:

Fehler

getaddrinfo
EAI_AGAIN
smtp.strato.de

I currently have no idea what causes the issue or how I could fix it easily. Does anyone have an idea maybe?

phenomlab

@dave1904 that looks very much like a DNS failure to me. From the CLI, are you able to ping news.google.com and get a response?

At a guess, I'd say this won't work as you have a resolver issue.

dave1904

@phenomlab said in Error getaddrinfo EAI_AGAIN after running out of memory:

@dave1904 that looks very much like a DNS failure to me. From the CLI, are you able to ping news.google.com and get a response?

At a guess, I'd say this won't work as you have a resolver issue.

You are right:

:~# ping news.google.com
ping: news.google.com: Temporary failure in name resolution

dave1904

/support/how-do-i-debug-my-droplets-network-configuration/

(docs.digitalocean.com)

Will try these steps later. Hope it helps

phenomlab

@dave1904 let me know if it doesn't. Are you running Ubuntu there?

dave1904

@phenomlab Thanks! Yes, running Ubuntu 20.04 (LTS) x64

dave1904

Update: Still no luck yet after trying with CloudFlare or Google nameservers. Ping via IP (e.g. 8.8.8.8) is working fine. I've reached out to the DigitalOcean support.

dave1904

Fortunately, the problem has been solved. I don't know yet if DigitalOcean has changed anything, but the last thing I did were these prompts for diagnostics:

ping 8.8.8.8
ping google.com
dig google.com
dig google.com @1.1.1.1
cat /etc/resolv.conf
systemd-resolve --status
cat /etc/*release