1) Define and download a new version of haproxy
You can view all current versions of haproxy on the page:
We just use the command below and for convenience write the latest version into the variable:
LATEST_HAPROXY=$(wget -qO- http://www.haproxy.org/download/2.6/src/ | egrep -o "haproxy-2\.[0-9]+\.[0-9]+" | head -1)
Lets download and unpack
cd /usr/src/
wget http://www.haproxy.org/download/2.6/src/${LATEST_HAPROXY}.tar.gz
tar xzvf ${LATEST_HAPROXY}.tar.gz
2) Environment preparation and installation
Installing the necessary packages to build haproxy
yum install gcc-c++ openssl-devel pcre-static pcre-devel systemd-devel -y
Haproxy assembly and installation
cd /usr/src/${LATEST_HAPROXY}
make TARGET=linux-glibc USE_PCRE=1 USE_OPENSSL=1 USE_ZLIB=1 USE_CRYPT_H=1 USE_LIBCRYPT=1 USE_SYSTEMD=1
mkdir /etc/haproxy
make install
Create a systemd service
cat > /usr/lib/systemd/system/haproxy.service << 'EOL' [Unit] Description=HAProxy Load Balancer After=syslog.target network.target [Service] Environment="CONFIG=/etc/haproxy/haproxy.cfg" "PIDFILE=/run/haproxy.pid" ExecStartPre=/usr/local/sbin/haproxy -f $CONFIG -c -q ExecStart=/usr/local/sbin/haproxy -Ws -f $CONFIG -p $PIDFILE ExecReload=/usr/local/sbin/haproxy -f $CONFIG -c -q ExecReload=/bin/kill -USR2 $MAINPID KillMode=mixed Restart=always SuccessExitStatus=143 Type=notify [Install] WantedBy=multi-user.target EOL systemctl daemon-reload
3) Creating a haproxy config and launching
Let’s create a config with tcp forwarding port 80 to 127.0.0.1
cat > /etc/haproxy/haproxy.cfg << 'EOL'
global
log /dev/log local0
log /dev/log local1 notice
daemon
defaults
log global
option dontlognull
timeout connect 50000
timeout client 50000
timeout server 50000
listen LietenName
bind *:80
mode tcp
server YourServer 127.0.0.1:80
EOL
Haproxy launch
systemctl start haproxy
Check the status of the service
systemctl status haproxy
From: https://idolsgate.com/blog/how-to-install-the-latest-version-of-haproxy-on-centos-7/
