HAProxy : SSL/TLS Setting2024/04/16

Configure HAProxy with SSL/TLS connection.
The connection between HAproxy and Clients are encrypted with SSL.

-----------+---------------------------+--------------------------+------------
           |                           |                          |
           |10.0.0.30                  |10.0.0.51                 |10.0.0.52
+----------+-----------+   +-----------+----------+   +-----------+----------+
|   [ dlp.srv.world ]  |   | [ node01.srv.world ] |   | [ node02.srv.world ] |
|        HAProxy       |   |      Web Server#1    |   |      Web Server#2    |
+----------------------+   +----------------------+   +----------------------+

[1]	Get SSL certificates, refer to here.
[2]	In addition to previous basic HTTP Load Balancing setting, add settings for SSL/TLS.

# concatenate cert and key

root@dlp:~ #

cat /usr/local/etc/letsencrypt/live/dlp.srv.world/fullchain.pem \
/usr/local/etc/letsencrypt/live/dlp.srv.world/privkey.pem > /usr/local/etc/haproxy.pem

root@dlp:~ #

vi /usr/local/etc/haproxy.conf

# add into frontend section
# * comment out the 80 port line if you do not need unencrypted connection

frontend http-in
    bind *:80
    bind *:443 ssl crt /usr/local/etc/haproxy.pem

root@dlp:~ #

service haproxy reload

[3]	Verify working normally to access to frontend HAproxy Server.

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