Announcing HAProxy 2.3

blog20201105-01.cfg

log-forward syslog-lb
    bind :::7514       # Listen on TCP IPv4/IPv6
    dgram-bind :::7514 # Listen on UDP IPv4/IPv6

    # load balance messages on 4 udp syslog servers
    log 10.1.0.2:10001 format rfc5424 sample 1:4 local0 info
    log 10.1.0.3:10002 format rfc5424 sample 2:4 local0 info
    log 10.1.0.4:10003 format rfc5424 sample 3:4 local0 info 
    log 10.1.0.5:10004 format rfc5424 sample 4:4 local0 info

blog20201105-02.sh

$ echo "show stat domain dns" |socat tcp-connect:127.0.0.1:9999 -

# id,          send_error, valid, update, cname, cname_error, any_err, nx, timeout, refused, other, invalid, too_big, truncated, outdated,
  nameserver1, 0,          20,    0,      0,     10,          10,      0,  0,       0,       0,     0,       0,       0,         0,

blog20201105-03.cfg

frontend stats
    bind :8404
    stats enable
    stats uri /
    stats refresh 10s
    stats show-modules
    no log

blog20201105-04.cfg

# The old replace-path directive only replaces the path
# Add /foo to the end of the path
# /a/b/c?x=y  -->  /a/b/c/foo?x=y
http-request replace-path ([^?]+)(\?{1}[^?]+)? \1/foo

blog20201105-05.cfg

# Strip off the query string
# /a/b/c?x=y  -->  /a/b/c/foo
http-request replace-pathq ([^?]+)(\?{1}[^?]+)? \1/foo

# Add x=y to the query string
# /a/b/c?x=y  -->  /a/b/c/foo?x=y&foo=bar
http-request replace-pathq ([^?]+)(\?{1}[^?]+)? \1/foo\2&foo=bar

blog20201105-06.cfg

# The old set-path directive
# Prepend /foo to the path
# /a/b/c?x=y  -->  /foo/a/b/c?x=y
http-request set-path /foo%[path]

# The new set-pathq directive
# Strip off the query string
# /a/b/c?x=y  -->  /foo/a/b/c
http-request set-pathq /foo%[path]

blog20201105-07.cfg

http-request set-header x-forwarded-proto %[ssl_fc,iif(https,http)]

blog20201105-08.cfg

http-after-response set-header x-cache %[res.cache_hit,iif(Hit,Miss)]