This guide describes how to install HAProxy with Let’s Encrypt as a service. This is possible in case you are hosting ThingsBoard in the cloud and have a valid DNS name assigned to your instance.
RHEL/CentOS 7 with valid DNS name assigned to the instance. Network settings should allow connections on Port 80 (HTTP) and 443 (HTTPS).
In order to open 80 and 443 ports execute the following command:
sudo firewall-cmd --zone=public --add-port=80/tcp --permanent
sudo firewall-cmd --zone=public --add-port=443/tcp --permanent
sudo firewall-cmd --reload
Below is example command for AWS as a reference:
$ ssh -i <PRIVATE-KEY> ubuntu@<PUBLIC_DNS_NAME>
or consult your cloud vendor for different options.
Execute the following commands to install HAProxy package:
dnf update -y
dnf install haproxy
sudo yum remove haproxy
sudo yum -y install centos-release-scl
sudo yum -y install rh-haproxy18-haproxy rh-haproxy18-haproxy-syspaths
sudo yum -y install ftp://ftp.pbone.net/mirror/ftp5.gwdg.de/pub/opensuse/repositories/home:/IFAD:/RHEL/RHEL_7/x86_64/haproxy-1.7.11-1.1.x86_64.rpm
RHEL 7 ONLY - Enable the optional channel:
sudo yum -y install yum-utils
sudo yum-config-manager --enable rhui-REGION-rhel-server-extras rhui-REGION-rhel-server-optional
Execute the following commands to install Certbot package:
sudo yum -y install ca-certificates certbot
Execute the following commands to install default self-signed certificate:
(copy-paste full text of the command as-is)
cat <<EOT | sudo tee /usr/bin/haproxy-default-cert
#!/bin/sh
set -e
HA_PROXY_DIR=/usr/share/tb-haproxy
CERTS_D_DIR=\${HA_PROXY_DIR}/certs.d
TEMP_DIR=/tmp
PASSWORD=\$(openssl rand -base64 32)
SUBJ="/C=US/ST=somewhere/L=someplace/O=haproxy/OU=haproxy/CN=haproxy.selfsigned.invalid"
KEY=\${TEMP_DIR}/haproxy_key.pem
CERT=\${TEMP_DIR}/haproxy_cert.pem
CSR=\${TEMP_DIR}/haproxy.csr
DEFAULT_PEM=\${HA_PROXY_DIR}/default.pem
if [ ! -e \${HA_PROXY_DIR} ]; then
mkdir -p \${HA_PROXY_DIR}
fi
if [ ! -e \${CERTS_D_DIR} ]; then
mkdir -p \${CERTS_D_DIR}
fi
# Check if default.pem has been created
if [ ! -e \${DEFAULT_PEM} ]; then
openssl genrsa -des3 -passout pass:\${PASSWORD} -out \${KEY} 2048 &> /dev/null
sleep 1
openssl req -new -key \${KEY} -passin pass:\${PASSWORD} -out \${CSR} -subj \${SUBJ} &> /dev/null
sleep 1
cp \${KEY} \${KEY}.org &> /dev/null
openssl rsa -in \${KEY}.org -passin pass:\${PASSWORD} -out \${KEY} &> /dev/null
sleep 1
openssl x509 -req -days 3650 -in \${CSR} -signkey \${KEY} -out \${CERT} &> /dev/null
sleep 1
cat \${CERT} \${KEY} > \${DEFAULT_PEM}
echo \${PASSWORD} > \${HA_PROXY_DIR}/password.txt
fi
EOT
Execute the following commands:
sudo chmod +x /usr/bin/haproxy-default-cert
touch ~/.rnd
sudo haproxy-default-cert
Execute the following command to create HAProxy Load Balancer configuration file:
(copy-paste full text of the command as-is)
cat <<EOT | sudo tee /etc/haproxy/haproxy.cfg
#HA Proxy Config
global
ulimit-n 500000
maxconn 99999
maxpipes 99999
tune.maxaccept 500
log 127.0.0.1 local0
log 127.0.0.1 local1 notice
ca-base /etc/ssl/certs
crt-base /etc/ssl/private
ssl-default-bind-ciphers ECDH+AESGCM:DH+AESGCM:ECDH+AES256:DH+AES256:ECDH+AES128:DH+AES:ECDH+3DES:DH+3DES:RSA+AESGCM:RSA+AES:RSA+3DES:!aNULL:!MD5:!DSS
ssl-default-bind-options no-sslv3
defaults
log global
mode http
timeout connect 5000ms
timeout client 50000ms
timeout server 50000ms
timeout tunnel 1h # timeout to use with WebSocket and CONNECT
default-server init-addr none
frontend http-in
bind *:80
option forwardfor
reqadd X-Forwarded-Proto:\ http
acl letsencrypt_http_acl path_beg /.well-known/acme-challenge/
redirect scheme https if !letsencrypt_http_acl { env(FORCE_HTTPS_REDIRECT) -m str true }
use_backend letsencrypt_http if letsencrypt_http_acl
default_backend tb-backend
frontend https_in
bind *:443 ssl crt /usr/share/tb-haproxy/default.pem crt /usr/share/tb-haproxy/certs.d/ ciphers ECDHE-RSA-AES256-SHA:RC4-SHA:RC4:HIGH:!MD5:!aNULL:!EDH:!AESGCM
option forwardfor
reqadd X-Forwarded-Proto:\ https
default_backend tb-backend
backend letsencrypt_http
server letsencrypt_http_srv 127.0.0.1:8090
backend tb-backend
balance leastconn
option tcp-check
option log-health-checks
server tb1 127.0.0.1:8080 check inter 5s
http-request set-header X-Forwarded-Port %[dst_port]
EOT
Execute the following commands to create Certbot with Let’s Encrypt configuration and helper files:
(copy-paste full text of the command as-is)
sudo mkdir -p /usr/local/etc/letsencrypt \
&& sudo mkdir -p /usr/share/tb-haproxy/letsencrypt \
&& sudo rm -rf /etc/letsencrypt \
&& sudo ln -s /usr/share/tb-haproxy/letsencrypt /etc/letsencrypt
cat <<EOT | sudo tee /usr/local/etc/letsencrypt/cli.ini
authenticator = standalone
agree-tos = True
http-01-port = 8090
tls-sni-01-port = 8443
non-interactive = True
preferred-challenges = http-01
EOT
cat <<EOT | sudo tee /usr/bin/haproxy-refresh
#!/bin/sh
HA_PROXY_DIR=/usr/share/tb-haproxy
LE_DIR=/usr/share/tb-haproxy/letsencrypt/live
DOMAINS=\$(ls -I README \${LE_DIR})
# update certs for HA Proxy
for DOMAIN in \${DOMAINS}
do
cat \${LE_DIR}/\${DOMAIN}/fullchain.pem \${LE_DIR}/\${DOMAIN}/privkey.pem > \${HA_PROXY_DIR}/certs.d/\${DOMAIN}.pem
done
# restart haproxy
exec service haproxy restart
EOT
cat <<EOT | sudo tee /usr/bin/certbot-certonly
#!/bin/sh
/usr/bin/certbot certonly -c /usr/local/etc/letsencrypt/cli.ini "\$@"
EOT
cat <<EOT | sudo tee /usr/bin/certbot-renew
#!/bin/sh
/usr/bin/certbot -c /usr/local/etc/letsencrypt/cli.ini renew "\$@"
EOT
sudo chmod +x /usr/bin/haproxy-refresh /usr/bin/certbot-certonly /usr/bin/certbot-renew
Execute the following command to create certificates auto renewal cron job:
(copy-paste full text of the command as-is)
cat <<EOT | sudo tee /etc/cron.d/certbot
# /etc/cron.d/certbot: crontab entries for the certbot package
#
# Upstream recommends attempting renewal twice a day
#
# Eventually, this will be an opportunity to validate certificates
# haven't been revoked, etc. Renewal will only occur if expiration
# is within 30 days.
SHELL=/bin/sh
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
0 */12 * * * root test -x /usr/bin/certbot && perl -e 'sleep int(rand(3600))' && certbot -c /usr/local/etc/letsencrypt/cli.ini -q renew && haproxy-refresh
EOT
Finally restart HAProxy Load Balancer service in order changes take effect:
sudo service haproxy restart
Don’t forget to replace your_domain and your_email before executing the command below:
sudo certbot-certonly --domain your_domain --email your_email
Finally restart HAProxy:
sudo haproxy-refresh