# Random 503 service unavailable error

**URL:** <https://discourse.haproxy.org/t/random-503-service-unavailable-error/7838>\
**Category:** Help!\
**Created:** [July 16, 2022, 3:35pm UTC](https://discourse.haproxy.org/t/random-503-service-unavailable-error/7838 "2022-07-16T15:35:38Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![gesora](https://avatars.discourse-cdn.com/v4/letter/g/2bfe46/32.png) [@gesora](https://discourse.haproxy.org/u/gesora)\
**Post date:** [July 16, 2022, 3:35pm UTC](https://discourse.haproxy.org/t/random-503-service-unavailable-error/7838/1 "2022-07-16T15:35:38Z")

</div>

Hi I’m new to HAPROXY I was able to configure it for my webapp but sometimes I got a 503 error, I checked my config seems to be fine don’t know if maybe I’m doing something wrong here

Here is my config:

global  
log 127.0.0.1 local2  
chroot /var/lib/haproxy  
pidfile /var/run/haproxy.pid  
user haproxy  
group haproxy  
daemon

```
# turn on stats unix socket
stats socket /var/lib/haproxy/stats
ssl-default-bind-ciphers PROFILE=SYSTEM
ssl-default-server-ciphers PROFILE=SYSTEM
ssl-dh-param-file /etc/haproxy/dhparams.pem

```

#---------------------------------------------------------------------

# common defaults that all the ‘listen’ and ‘backend’ sections will

# use if not designated in their block

#---------------------------------------------------------------------  
defaults  
mode http  
log global  
option httplog  
option dontlognull  
option http-server-close  
option forwardfor except 127.0.0.0/8  
option redispatch  
retries 3  
timeout http-request 10s  
timeout queue 1m  
timeout connect 10s  
timeout client 1000s  
timeout server 1000s  
timeout http-keep-alive 10s  
timeout check 10s  
maxconn 30000

#---------------------------------------------------------------------

# haproxy monitor

#---------------------------------------------------------------------  
#---------------------------------------------------------------------  
listen monitor  
bind \*:64080  
mode http  
monitor-uri /health  
option httplog

#---------------------------------------------------------------------

# haproxy proxy stats

#---------------------------------------------------------------------  
#---------------------------------------------------------------------

# enable statistics

```
stats enable
stats uri /stats
stats auth admin:mysecurepass2023
stats refresh 15s
stats show-legends
stats show-node

```

#---------------------------------------------------------------------

# Frontend VIP [myapp1.com](http://myapp1.com)

#---------------------------------------------------------------------  
#---------------------------------------------------------------------

frontend [myapp1.com](http://myapp1.com)  
mode http  
bind 10.10.213.111:80  
bind 10.10.213.111:443 ssl crt /etc/haproxy/certs/star.myapp1.com.pem  
http-request redirect scheme https unless { ssl\_fc }  
default\_backend [myapp1.com](http://myapp1.com)

#---------------------------------------------------------------------

# Backend Web Servers [myapp1.com](http://myapp1.com)

#---------------------------------------------------------------------  
#---------------------------------------------------------------------

backend [myapp1.com](http://myapp1.com)  
balance leastconn  
server mywebsvr01 10.10.33.31:443 check cookie [myapp1.com](http://myapp1.com) maxconn 10000 ssl verify none check-sni [myapp1.com](http://myapp1.com) sni str([myapp1.com](http://myapp1.com)) ca-file /etc/haproxy/certs/star.myapp1.com.pem  
server mywebsvr02 10.10.33.41:443 check cookie [myapp1.com](http://myapp1.com) maxconn 10000 ssl verify none check-sni [myapp1.com](http://myapp1.com) sni str([myapp1.com](http://myapp1.com)) ca-file /etc/haproxy/certs/star.myapp1.com.pem

#---------------------------------------------------------------------

# Frontend VIP [myapp2.com](http://myapp2.com)

#---------------------------------------------------------------------  
#---------------------------------------------------------------------

frontend [myapp2.com](http://myapp2.com)  
mode http  
bind 10.10.213.112:80  
bind 10.10.213.112:443 ssl crt /etc/haproxy/certs/star.myapp2.com.pem  
http-request redirect scheme https unless { ssl\_fc }  
default\_backend [myapp2.com.com](http://myapp2.com.com)

#---------------------------------------------------------------------

# Backend Servers [myapp2.com](http://myapp2.com)

#---------------------------------------------------------------------  
#---------------------------------------------------------------------

backend [myapp2.com](http://myapp2.com)  
balance leastconn  
server mywebsvr01 10.10.33.32:443 check cookie [myapp2.com.com](http://myapp2.com.com) maxconn 10000 ssl verify none check-sni [myapp2.com](http://myapp2.com) sni str([myapp2.com](http://myapp2.com)) ca-file /etc/haproxy/certs/star.myapp2.com.pem  
server mywebsvr02 10.10.33.42:443 check cookie [myapp2.com.com](http://myapp2.com.com) maxconn 10000 ssl verify none check-sni [myapp2.com](http://myapp2.com) sni str([myapp2.com](http://myapp2.com)) ca-file /etc/haproxy/certs/star.myapp2.com.pem