Install Zabbix 4 + PostgreSQL on CentOS 7

# rpm -ivh https://repo.zabbix.com/zabbix/4.0/rhel/7/x86_64/zabbix-release-4.0-1.el7.noarch.rpm
# yum-config-manager --enable rhel-7-server-optional-rpms
# yum install zabbix-server-pgsql zabbix-web-pgsql zabbix-agent -y
# yum install https://download.postgresql.org/pub/repos/yum/10/redhat/rhel-7-x86_64/pgdg-centos10-10-2.noarch.rpm
# yum install postgresql10 -y
# yum install postgresql10-server -y
# /usr/pgsql-10/bin/postgresql-10-setup initdb

# systemctl enable postgresql-10
# systemctl start postgresql-10
# systemctl enable zabbix-server
# systemctl enable zabbix-agent

# su - postgres
# psql -c "alter user postgres with password 'Z4bbix'"
# createuser --pwprompt zabbix
	Enter password for new role: Z4bbix
	Enter it again: Z4bbix

# createdb -O zabbix -E Unicode -T template0 zabbix

# zcat /usr/share/doc/zabbix-server-pgsql*/create.sql.gz | /usr/pgsql-10/bin/psql -U zabbix zabbix -W
	Enter password for user zabbix: Z4bbix

# vi /etc/zabbix/zabbix_server.conf
	DBHost=localhost
	DBName=zabbix
	DBUser=zabbix
	DBPassword=Z4bbix

# cat /etc/zabbix/zabbix_agentd.conf
	PidFile=/var/run/zabbix/zabbix_agentd.pid
	LogFile=/var/log/zabbix/zabbix_agentd.log
	LogFileSize=3
	DebugLevel=0
	Server=127.0.0.1
	ListenPort=10050
	StartAgents=5
	RefreshActiveChecks=60
	Timeout=30
	Include=/etc/zabbix/zabbix_agentd.d/*.conf

# vi /etc/php.ini
	date.timezone = "Europe/Madrid"

# cat /var/www/html/index.html
	<html>
	<head>
	<title>Zabbix Server</title>
	<meta http-equiv="refresh" content="0; URL=http://host.domain.com/zabbix">
	<meta name="keywords" content="automatic redirection">
	</head>
	<body>
	</body>
	</html>

# systemctl restart httpd
# systemctl restart zabbix-server