We are running Haproxy and 3 nginx processes inside a single docker on the host network to access it from localhost. We have installed HaProxy version 2.6.6. 3 nginx servers are running behind it as backend servers. We are able to access them individually What is wrong with the haproxy configuration here? we are always getting the below error on curl (curl http://localhost:80) requests. Please suggest
<html><body><h1>503 Service Unavailable</h1>
No server is available to handle this request.
global
log /dev/log local0
log /dev/log local1 notice
chroot /var/lib/haproxy
user haproxy
group haproxy
daemon
pidfile /usr/local/etc/haproxy/haproxy.pid
defaults
timeout http-request 2000
timeout queue 1000
timeout check 2000
timeout connect 2000
timeout client 5000
timeout server 5000
log global
option dontlognull
option clitcpka
option srvtcpka
option tcpka
unique-id-format %[uuid()]
unique-id-header X-Request-ID
log-format "%ci:%cp [%tr] %ft %b/%s %TR/%Tw/%Tc/%Tr/%Ta %ST %B %CC %CS %tsc %ac/%fc/%bc/%sc/%rc %sq/%bq %hr %hs %ID %{+Q}r"
frontend http-in
mode http
option forwardfor
bind *:80
use_backend webservers
backend webservers
mode http
server localhost-01 localhost:8000
server localhost-02 localhost:8001
server localhost-03 localhost:8002
Related
I'm experiencing high latency with haproxy load balancer when backend configuration uses private network IP addresses.
But when I replace backend server addresses with public IP address or Reverse DNS name I experience no latency.
What is causing the latency?
If one uses public IP or fqdn or
Reverse DNS name, does network traffic bypasses haproxy?
Is it
allowed to use public IP or fqdn or Reverse DNS name for backend
servers in haproxy conf?
Configuration With Private Network IP Addresses
global
log /dev/log local0
log 127.0.0.1 local1 notice
chroot /var/lib/haproxy
user haproxy
group haproxy
daemon
maxconn 18000
# Default SSL material locations
ca-base /etc/ssl/certs
crt-base /etc/ssl/private
defaults
log global
mode http
option httplog
timeout client 30s
timeout connect 4s
timeout server 30s
frontend www
bind *:80
default_backend webservers
backend webservers
mode http
balance roundrobin
server server1 10.0.0.20:80
server server2 10.0.0.30:80
Configuration With Reverse DNS or Public IP Addresses
global
log /dev/log local0
log 127.0.0.1 local1 notice
chroot /var/lib/haproxy
user haproxy
group haproxy
daemon
maxconn 18000
# Default SSL material locations
ca-base /etc/ssl/certs
crt-base /etc/ssl/private
defaults
log global
mode http
option httplog
timeout client 30s
timeout connect 4s
timeout server 30s
frontend www
bind *:80
default_backend webservers
backend webservers
mode http
balance roundrobin
server server1 90-80-70-40.aws.com:80
server server2 90-80-70-50.aws.com:80
It looks like it was a DNS issue on the host Windows machines. Added entries to host file and it worked as expected with private network IP settings.
I'm running HAproxy with backend Spring Boot Rest controllers. My spring log shows constant errors that look like the following:
[reactor-http-epoll-26] ERROR o.s.w.s.a.HttpWebHandlerAdapter - [9df8bfcf] Error [io.netty.channel.unix.Errors$NativeIoException: writeAddress(..) failed: Connection reset by peer] for HTTP GET "/api/v1/status", but ServerHttpResponse already committed (200 OK)
HAproxy performs an HTTP check on the url /api/v1/status. What would be the reason that I'm getting these errors?
HAProxy Config
global
log 127.0.0.1 local2
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
maxconn 4000
user haproxy
group haproxy
# daemon
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
ssl-default-bind-ciphers EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH+aRSA+RC4:EECDH:EDH+aRSA:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EX$
ssl-default-bind-options no-sslv3 no-tlsv10
tune.ssl.default-dh-param 4096
defaults
mode http
log global
option httplog
option http-server-close
option forwardfor except 127.0.0.0
option redispatch
retries 3
timeout http-request 30s
timeout queue 1m
timeout connect 30s
timeout client 30s
timeout server 30s
frontend https-in
bind *:443 ssl crt /etc/cert.pem
default_backend api
backend api
mode http
option httpchk GET /api/v1/status HTTP/1.0
http-check expect status 200
balance roundrobin
server api1 127.0.0.1:8001 check fall 3 rise 2
server api2 127.0.0.1:8002 check fall 3 rise 2
HAproxy is doing GET request, reads http response code and closing connection.
Boot is trying to send remaining parts (http headers and some json payload) but connection is already closed.
Just replace GET with OPTIONS in the line:
option httpchk GET /api/v1/status HTTP/1.0
I am running an haproxy configuration on mac that works perfect on linux but I can't get the proxy to even respond. Here is my config:
defaults
mode http
timeout connect 5000ms
timeout client 5000ms
timeout server 5000ms
frontend http
bind *:80
acl oracle_content hdr(ContentType) -i application/vnd.api+json
acl oracle_accept hdr(Accept) -i application/vnd.api+json
use_backend oracle_be if oracle_content
use_backend oracle_be if oracle_accept
default_backend matrix_be
backend oracle_be
balance roundrobin
server oracle1 theoracle.stage.company.com:8080
backend matrix_be
balance roundrobin
server matrix1 192.168.1.6:3000
docker run -d --name cc -v /Users/cbongiorno/development/haproxy.cfg:/usr/local/etc/haproxy/haproxy.cfg:ro haproxy
docker -v
Docker version 1.12.0, build 8eab29e
the only machine specific config is the IP adress of the matrix_be entry which has to be my local interface. It's not working on 2 macs and I have tried binding the proxy to multiple interfaces. I am not even getting a 504 which would indicate the proxy is fine but one of the backend services is misconfigured.
Ideas?
Due to current docker on mac limitations, the -p 80:80 flag must be passed even if the container declares port 80 open for business
Can someone help be understand why haproxy fails to detect my tomcat instance running on port 8080? I can reach the server just fine when browsing to 127.0.0.1:8080
On start up haproxy spits out the following error:
WARNING] 141/163609 (23336) : Server cim/cim is DOWN, reason: Layer7 wrong status, code: 404, info: "Not Found", check duration: 1ms. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue.
[ALERT] 141/163609 (23336) : backend 'cim' has no server available!
Here's the haproxy config.
global
maxconn 128
chroot /var/lib/haproxy
pidfile /var/run/haproxy.pid
tune.ssl.default-dh-param 2048
defaults
mode http
log global
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
option httplog
option forwardfor
option httpclose
option redispatch
option httpchk HEAD / HTTP/1.0
retries 3
timeout http-request 10s
timeout queue 1m
timeout connect 10s
timeout client 1m
timeout server 1m
timeout http-keep-alive 20s
timeout check 10s
frontend in-http
bind *:80
acl restricted_urls path_beg /trm/ws/v2
use_backend cim if restricted_urls
backend cim
balance roundrobin
server cim 127.0.0.1:8080 check
Tomcat is definitely up and running, and I can telnet to 127.0.0.1 8080 and receive an http response.
My haproxy.cfg
global
log 127.0.0.1 local0
maxconn 20000
user haproxy
group haproxy
stats socket /var/run/haproxy/haproxy.sock level admin
stats timeout 2m
listen admin
bind *:8080
stats enable
defaults
log global
mode http
option httplog
option dontlognull
retries 3
option redispatch
# timeout http-request 5s
timeout connect 5000
timeout client 60000
timeout server 60000
frontend http-in
bind *:80
default_backend monkey
backend monkey
stats enable
stats uri /haproxy?stats
stats realm Strictly\ Private
stats auth admin:hello
stats auth Another_User:hi
mode http
compression algo gzip
compression type text/html text/plain text/css application/json
balance roundrobin
option httpclose
option forwardfor
default-server inter 1s fall 1
server cd-test-1 1.2.3.4:80 check
server cd-test-2 5.6.7.8:80 check
I have been using socat to disable a node from HAproxy cluster.
below is the command
echo "disable server monkey/cd-test-1"| socat stdio /var/run/haproxy/haproxy.sock
The above disables my node from haproxy. But if I use the ip address(1.2.3.4) instead of "cd-test-1" it returns No such server.
I am using ansible to automated this. I use {{inventory_hostname}} and delegate the command to my HAproxy server. Hence the issue.
- name: Disable {{ inventory_hostname }} in haproxy and letting the services drain
shell: echo "disable server monkey/{{inventory_hostname}}"| socat stdio /var/run/haproxy/haproxy.sock
become_user: root
delegate_to: "{{ item }}"
with_items: groups.haproxy_backend
This returns "No such server." and moves along.
Can someone please help me find the issue with using the IP instead of the name of server. Might be doing something very silly. Any help is appreciated.
Disabling and enabling HAproxy using socat, the server alias name has to be mentioned.
Otherwise, we will be getting a No such server error.