http api query failed using '+'

[beijiaxu]

Proposal

Use case. Why is this important?
need memory_uage metric (node_memory_MemTotal - (node_memory_MemFree + node_memory_Cached + node_memory_Buffers))

Bug Report

What did you do?
use graph query and query http api
What did you expect to see?
metric value
What did you see instead? Under which circumstances?
graph query success but http api failed
{
"status": "error",
"errorType": "bad_data",
"error": "parse error at char 79: unexpected identifier "avg_over_time" in paren expression, expected ")""
}

Environment
CentOS 7.3

• System information:
  Linux 3.10.0-514.el7.x86_64 x86_64

• Prometheus version:
  2.2.1

• Alertmanager version:

• Logs:
  no log print in journalctl

While using graph query metric, I can see '+' is encoded to '%2B', I tried to replace '+' with '%2B', http api query succeeded.
But I use web console to encodeURI('+'), it doesn't encode this word.

[brian-brazil]

It makes more sense to ask questions like this on the prometheus-users mailing list rather than in a GitHub issue. On the mailing list, more people are available to potentially respond to your question, and the whole community can benefit from the answers provided.

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.