Varnish with Hitch HTTP/2 implement on CentOS 8.0

curl -s https://packagecloud.io/install/repositories/varnishcache/varnish60lts/script.rpm.sh | sudo bash

yum install varnish -y
# or
dnf install varnish -y

varnishd -V
varnishd (varnish-6.0.2 revision 0458b54db26cfbea79af45ca5c4767c7c2925a91)
Copyright (c) 2006 Verdens Gang AS
Copyright (c) 2006-2018 Varnish Software AS

cat /etc/varnish/default.vcl
#
# This is an example VCL file for Varnish.
#
# It does not do anything by default, delegating control to the
# builtin VCL. The builtin VCL is called when there is no explicit
# return statement.
#
# See the VCL chapters in the Users Guide at https://www.varnish-cache.org/docs/
# and https://www.varnish-cache.org/trac/wiki/VCLExamples for more examples.

# Marker to tell the VCL compiler that this VCL has been adapted to the
# new 4.0 format.
vcl 4.0;

# Default backend definition. Set this to point to your content server.
backend default {
    .host = "127.0.0.1";
    .port = "8080";
}

sub vcl_recv {
    # Happens before we check if we have this in cache already.
    #
    # Typically you clean up the request here, removing cookies you don't need,
    # rewriting the request, etc.
}

sub vcl_backend_response {
    # Happens after we have read the response headers from the backend.
    #
    # Here you clean the response headers, removing silly Set-Cookie headers
    # and other mistakes your backend does.
}

sub vcl_deliver {
    # Happens when we have all the pieces we need, and are about to send the
    # response to the client.
    #
    # You can do accounting or modifying the final object here.
}

libev >= 4
openssl (recent, >=1.0.0 recommended)

dnf install epel-release -y
dnf install hitch -y

hitch -V
hitch 1.5.2

cat /etc/hitch/hitch.conf
# Run 'man hitch.conf' for a description of all options.


frontend = {
    host = "*"
    port = "443"
}
backend = "[127.0.0.1]:6086"    # 6086 is the default Varnish PROXY port.
workers = 4                     # number of CPU cores

daemon = on

# We strongly recommend you create a separate non-privileged hitch
# user and group
user = "hitch"
group = "hitch"

# Enable to let clients negotiate HTTP/2 with ALPN. (default off)
# alpn-protos = "h2, http/1.1"

# run Varnish as backend over PROXY; varnishd -a :80 -a localhost:6086,PROXY ..
write-proxy-v2 = on             # Write PROXY header


syslog = on
log-level = 1
# Add pem files to this directory
pem-dir = "/etc/pki/tls/private"

# varnishadm param.show feature

feature
        Value is: none (default)

        Enable/Disable various minor features.
           none                       Disable all features.

        Use +/- prefix to enable/disable individual feature:
           short_panic                Short panic message.
           wait_silo                  Wait for persistent silo.
           no_coredump                No coredumps.
           esi_ignore_https           Treat HTTPS as HTTP in
                                      ESI:includes
           esi_disable_xml_check      Don't check of body looks like
                                      XML
           esi_ignore_other_elements  Ignore non-esi XML-elements
           esi_remove_bom             Remove UTF-8 BOM
           https_scheme               Also split https URIs
           http2                      Support HTTP/2 protocol
           http_date_postel           Relax parsing of timestamps in
                                      HTTP headers

systemctl restart hitch

mv /etc/hitch/hitch.conf /etc/hitch/hitch.conf.bak

echo '
# Run 'man hitch.conf' for a description of all options.

frontend = {
    host = "*"
    port = "443"
}
backend = "[127.0.0.1]:6086"    # 6086 is the default Varnish PROXY port.
workers = 4                     # number of CPU cores

daemon = on

# We strongly recommend you create a separate non-privileged hitch
# user and group
user = "hitch"
group = "hitch"

# Enable to let clients negotiate HTTP/2 with ALPN. (default off)
# Varnish 启动参数必须增加 `-p feature=+http2`，开启 HTTP/2 特性（默认关闭）
alpn-protos = "h2, http/1.1"

# run Varnish as backend over PROXY; varnishd -a :80 -a localhost:6086,PROXY ..
write-proxy-v2 = on             # Write PROXY header

syslog = on
log-level = 1

# Add pem files to this directory
#pem-dir = "/etc/pki/tls/private"

## PEM 文件包含 key、cert 和 chain 的组合，可以支持多个 PEM 文件
## cat example.com.key example.com.crt my-ca-bundle.crt > example.com.pem
pem-file = "/etc/hitch/varnish.pem"
# 定义第二个 PEM 文件
#pem-file = "/etc/hitch/mydomain.pem"
## 官方推荐默认 cipher
ciphers = "EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH"
## Hitch supports TLS (1.0, 1.1, 1.2, 1.3) and SSL 3. By default
tls-protos = TLSv1.2 TLSv1.3
## TCP Fast Open saves up to one full round-trip time (RTT) over the standard three-way connection handshake during a TCP session.
tcp-fastopen = on
' > /etc/hitch/hitch.conf

systemctl reload hitch