I am running FastApi with guvicorn in a function like this:
if __name__ == "__main__":
uvicorn.run(
app="app.main:app",
host="HOSTIP",
port=8000,
reload=True,
# log_config=None,
log_config=log_config,
log_level="info"
)
This is what my log_config looks like:
log_config = {
"version": 1,
"disable_existing_loggers": True,
"formatters": {
"default": {
"()": "uvicorn.logging.DefaultFormatter",
"fmt": "%(asctime)s::%(levelname)s::%(name)s::%(filename)s::%(funcName)s - %(message)s",
"use_colors": None,
},
"access": {
"()": "uvicorn.logging.AccessFormatter",
"fmt": '%(asctime)s::%(levelprefix)s %(client_addr)s - "%(request_line)s" %(status_code)s',
},
},
"handlers":
{
"default":
{
"formatter": "default",
# "class": 'logging.NullHandler',
"class": 'logging.FileHandler',
"filename": CONFIG[SECTION]["default"]
},
"error":
{
"formatter": "default",
# "class": 'logging.NullHandler',
"class": 'logging.FileHandler',
"filename": CONFIG[SECTION]["error"]
},
"access":
{
"formatter": "access",
# "class": 'logging.NullHandler',
"class": 'logging.FileHandler',
"filename": CONFIG[SECTION]["access"]
},
},
"loggers":
{
"uvicorn": {"handlers": ["default"], "level": "INFO", "propagate": False},
"uvicorn.error": {"handlers": ["error"], "level": "ERROR", "propagate": False},
"uvicorn.access": {"handlers": ["access"], "level": "INFO", "propagate": False},
}
}
I have 2 instances of fastapi on 2 servers, running behind haproxy. I was able to put in this option in haproxy to fwd client IP to my API:
option forwardfor
I am able to confirm with TCPDUMP on one of the API servers that I am infact getting some x-fwd headers coming in:
[user@server ~]# tcpdump -i INTERFACE host SERVERIP -AAA | grep -i IP OF MY LAPTOP
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on INTERFACE, link-type EN10MB (Ethernet), capture size 262144 bytes
*X-Forwarded-For: IP OF MY LAPTOP*
But in my logs, I only see the IP of the vip that the requests hit, even though HAproxy is fwding the IP of client, I am not able to log it.
Is there is a custom variable I can use for the log_config access section?
Thanks.
You can use proxy_headers=True
to populate remote address info:
From the documentation:
--proxy-headers / --no-proxy-headers
Enable/Disable X-Forwarded-Proto,
X-Forwarded-For, X-Forwarded-Port to
populate remote address info.
https://www.uvicorn.org/deployment/#running-from-the-command-line