It seems to be a problem with my configuration file. I tried the one from
Section 2.3
of haproxy.org/download/1.5/doc/configuration.txt, and it works good now:
global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
daemon
maxconn 256
defaults
log global
mode http
timeout connect 5000ms
timeout client 50000ms
timeout server 50000ms
frontend http-in
bind *:80
default_backend servers
backend servers
server nginx-1 192.168.122.101:80 maxconn 32
server nginx-2 192.168.122.102:80 maxconn 32
Thanks,
- KK
On Tue, Apr 7, 2015 at 11:28 AM, Krishna Kumar Unnikrishnan (Engineering) <
krishna...@flipkart.com> wrote:
> Thanks Igor for the suggestion. I get:
>
> root@haproxy-2:/var/www# curl --http1.0 -X HEAD
> 192.168.122.101:80/check.txt
> curl: (18) transfer closed with 168 bytes remaining to read
> root@haproxy-2:/var/www# curl --http1.0 -X HEAD
> 192.168.122.102:80/check.txt
> curl: (18) transfer closed with 168 bytes remaining to read
>
> And without the flags:
>
> root@haproxy-2:/var/www# curl 192.168.122.102:80/check.txt
> <html>
> <head><title>404 Not Found</title></head>
> <body bgcolor="white">
> <center><h1>404 Not Found</h1></center>
> <hr><center>nginx/1.6.2</center>
> </body>
> </html>
>
> Is this the problem? I am not sure how to fix it.
>
> Thanks,
> - KK
>
> On Tue, Apr 7, 2015 at 11:10 AM, Igor Cicimov <
> ig...@encompasscorporation.com> wrote:
>
>>
>>
>> On Tue, Apr 7, 2015 at 3:24 PM, Krishna Kumar Unnikrishnan (Engineering)
>> <krishna...@flipkart.com> wrote:
>>
>>> Sorry, forgot to mention, this is haproxy version 1.5.11
>>>
>>>
>>> On Tue, Apr 7, 2015 at 10:52 AM, Krishna Kumar Unnikrishnan
>>> (Engineering) <krishna...@flipkart.com> wrote:
>>>
>>>> Hi all,
>>>>
>>>> I am moving from using LXC to KVM for haproxy on my Debian 7 system.
>>>> When I
>>>> start haproxy, I get this error:
>>>> _________________________________________
>>>> Apr 7 10:38:22 localhost haproxy[3418]: Proxy haproxy started.
>>>> Apr 7 10:38:24 localhost haproxy[3420]: Server haproxy/nginx-1 is
>>>> DOWN, reason Layer4 timeout, check duration: 2000ms. 1 active and 0 backup
>>>> servers left. 0 essions active, 0 requeued, 0 remaining in queue.
>>>> Apr 7 10:38:24 localhost haproxy[3419]: Server haproxy/nginx-1 is
>>>> DOWN, reason Layer4 timeout, check duration: 2001ms. 1 active and 0 backup
>>>> servers left. 0 essions active, 0 requeued, 0 remaining in queue.
>>>> Apr 7 10:38:25 localhost haproxy[3420]: Server haproxy/nginx-2 is
>>>> DOWN, reason Layer4 timeout, check duration: 2001ms. 0 active and 0 backup
>>>> servers left. 0 essions active, 0 requeued, 0 remaining in queue.
>>>> Apr 7 10:38:25 localhost haproxy[3420]: proxy haproxy has no server
>>>> available!
>>>> Apr 7 10:38:25 localhost haproxy[3419]: Server haproxy/nginx-2 is
>>>> DOWN, reason Layer4 timeout, check duration: 2001ms. 0 active and 0 backup
>>>> servers left. 0 essions active, 0 requeued, 0 remaining in queue.
>>>> Apr 7 10:38:25 localhost haproxy[3419]: proxy haproxy has no server
>>>> available!
>>>>
>>>> From outside the haproxy, I get the error:
>>>> # wget 192.168.122.112:80
>>>> --2015-04-07 10:48:47-- http://192.168.122.112/
>>>> Connecting to 192.168.122.112:80... connected.
>>>> HTTP request sent, awaiting response... 503 Service Unavailable
>>>> 2015-04-07 10:48:47 ERROR 503: Service Unavailable.
>>>> _______________________________________________________________
>>>>
>>>> The config file is:
>>>> global
>>>> log 127.0.0.1 local0
>>>> log 127.0.0.1 local1 notice
>>>> maxconn 65536
>>>> daemon
>>>> quiet
>>>> nbproc 2
>>>> debug
>>>> user haproxy
>>>> group haproxy
>>>>
>>>> defaults
>>>> log global
>>>> mode http
>>>> option dontlognull
>>>> retries 3
>>>> option redispatch
>>>> maxconn 65536
>>>> timeout connect 5000
>>>> timeout client 50000
>>>> timeout server 50000
>>>>
>>>> #listen haproxy 192.168.122.112:80
>>>> listen haproxy *:80
>>>> mode http
>>>> stats enable
>>>> stats auth someuser:somepassword
>>>> balance roundrobin
>>>> option prefer-last-server
>>>> option forwardfor
>>>> option httpchk HEAD /check.txt HTTP/1.0
>>>>
>>>
>> Check if the above health check is really working, you show that
>> requesting the root page works but we don't see you checking the /check.txt
>> file (does it exist at all?). Run:
>>
>> $ curl --http1.0 -X HEAD 192.168.122.101:80 <http://192.168.122.101/>
>> /check.txt
>> $ curl --http1.0 -X HEAD 192.168.122.102:80 <http://192.168.122.101/>
>> /check.txt
>>
>> from the HAP server.
>>
>> server nginx-1 192.168.122.101:80 check
>>>> server nginx-2 192.168.122.102:80 check
>>>>
>>>> BTW, I could not use "listen haproxy 192.168.122.112:80", but had to
>>>> use *:80
>>>> as haproxy does not start up with the former. It seems like haproxy
>>>> startup is
>>>> happening ahead of networking.
>>>> ______________________________________________________
>>>>
>>>> I also stopped/restarted haproxy, but I still get the same error at
>>>> start.
>>>>
>>>> root@haproxy-2:~# netstat -apn | grep :80
>>>> tcp 0 0 0.0.0.0:80 0.0.0.0:*
>>>> LISTEN 3558/haproxy
>>>> _______________________________________________________________
>>>> From outside haproxy, I can do a wget/curl" to either of the two
>>>> servers:
>>>>
>>>> # wget 192.168.122.101:80
>>>> --2015-04-07 10:42:28-- http://192.168.122.101/
>>>> Connecting to 192.168.122.101:80... connected.
>>>> HTTP request sent, awaiting response... 200 OK
>>>> Length: 867 [text/html]
>>>> Saving to: `index.html'
>>>>
>>>> 100%[======================================>] 867 --.-K/s in
>>>> 0s
>>>>
>>>> 2015-04-07 10:42:28 (104 MB/s) - `index.html' saved [867/867]
>>>> _______________________________________________________________
>>>>
>>>> And I can do the same from haproxy:
>>>> root@haproxy-2:~# wget 192.168.122.101
>>>> --2015-04-07 10:43:48-- http://192.168.122.101/
>>>> Connecting to 192.168.122.101:80... connected.
>>>> HTTP request sent, awaiting response... 200 OK
>>>> Length: 867 [text/html]
>>>> Saving to: `index.html'
>>>>
>>>> 100%[======================================>] 867 --.-K/s in
>>>> 0s
>>>>
>>>> 2015-04-07 10:43:48 (80.3 MB/s) - `index.html' saved [867/867]
>>>> _______________________________________________________________
>>>>
>>>> How do I fix this problem?
>>>>
>>>> Thank you,
>>>> - KK
>>>>
>>>
>>>
>>
>
