Install Edge components on a node

After you install the Edge apigee-setup utility on a node, use the apigee-setup utility to install one or more Edge components on the node.

The apigee-setup utility uses a command in the form:

/opt/apigee/apigee-setup/bin/setup.sh -p component -f configFile

Where component is the Edge component to install, and configFile is the silent configuration file containing the installation information. The configuration file must be accessible or readable by the "apigee" user. For example, you can create a new directory for the files, place them in the /usr/local or /usr/local/share directory, or anywhere else on the node accessible by the "apigee" user.

For example, to install the Edge Management Server:

/opt/apigee/apigee-setup/bin/setup.sh -p ms -f /usr/local/myConfig

For information on installing the Edge apigee-setup, see Install the Edge apigee-setup utility.

Installation considerations

As you write your config file, take into consideration the following options.

Setting up Postgres master-standby replication

By default, Edge installs all Postgres nodes in master mode. However, in production systems with multiple Postgres nodes, you must configure them to use master-standby replication so that if the master node fails, the standby node can continue to server traffic.

You can enable and configure master-standby replication at install time by using properties in the silent config file. Or, you can enable master-standby replication after installation. For more, see Set up master-standby replication for Postgres.

Enabling Cassandra authentication

By default, Cassandra installs without authentication enabled. That means anyone can access Cassandra. You can enable authentication after installing Edge, or as part of the installation process.

For more, see Enable Cassandra authentication.

Using a protected port when creating a virtual host

If you want to create a virtual host that binds the Router to a protected port, such as port numbers less than 1000, then you have to configure the Router to run as a user with access to those ports. By default, the Router runs as the user "apigee" which does not have access to privileged ports.

For information about how to configure a virtual host and Router to access ports below 1000, see Setting up a virtual host.

Install the new Edge UI

After you complete the initial installation, Apigee recommends that you install the new Edge UI, which is an enhanced user interface for developers and administrators of Apigee Edge for Private Cloud. (The Classic UI is installed by default.)

Note that the Edge UI requires that you disable Basic authentication and use an IDP such as SAML or LDAP.

For more information, see Install the new Edge UI.

Specifying the components to install

The following table lists the options you pass to the -p option of the apigee-service utility to specify which components to install on the node:

Component Description

c

Install Cassandra only.

zk install ZooKeeper only.

ds

Install ZooKeeper and Cassandra.

ld

Install OpenLDAP only.

mt

Install Edge Management Server, which also installs OpenLDAP.

If you set USE_LDAP_REMOTE_HOST=y in the config file, the OpenLDAP installation is skipped and the Management Server uses OpenLDAP installed on a different node.

ms

Install Edge Management Server, which also installs the Edge UI and OpenLDAP.

If you set USE_LDAP_REMOTE_HOST=y in the config file, the OpenLDAP installation is skipped and the Management Server uses OpenLDAP installed on a different node.

r

Install Edge Router only.

mp

Install Edge Message Processor only.

rmp

Install Edge Router and Message Processor.

ui

Install the Edge UI.

qs

Install Qpid Server only.

ps

Install Postgres Server only.

pdb Install Postgres database only - used only when installing the Apigee Developer Services portal (or simply, the portal). See Install the portal.

sax

Install the analytics components, meaning Qpid and Postgres.

Use this option for development and testing only, not for production.

sso Install the Apigee SSO module.

mo

Install Monetization.

sa

Install Edge standalone, meaning Cassandra, ZooKeeper, Management Server, OpenLDAP, Edge UI, Router, and Message Processor. This option omits the Edge analytics components: Qpid and Postgres.

Use this option for development and testing only, not for production.

aio

Install all components on a single node.

Use this option for development and testing only, not for production.

dp

Install the portal.

Creating a configuration file

The configuration file contains all the information necessary to install Edge. You can often use the same configuration file to install all components in an Edge installation.

However, you will have to use different configuration files, or modify your configuration file, if:

  • You are installing multiple OpenLDAP servers and need to configure replication as part of a 13-node installation. Each file requires different values for LDAP_SID and LDAP_PEER.
  • You are creating multiple data centers as part of a 12-node installation. Each data center requires different settings for properties such as ZK_CLIENT_HOSTS and CASS_HOSTS.

Each installation topology described below shows an example config file for that topology. For a complete reference on the config file, see Edge Configuration File Reference.

Test system requirements without running an install

Edge for the Private Cloud supports the ENABLE_SYSTEM_CHECK=y property to check CPU and memory requirements on a machine as part of an install. However, in previous releases of Edge, that check required you to actually perform the install.

You can now use the "-t" flag to make that check without having to do an install. For example, to check the system requirements for an "aio" install without actually doing the install, use the following command:

/opt/apigee/apigee-setup/bin/setup.sh -p aio -f configFile -t

This command displays any errors with the system requirements to the screen.

See Installation requirements for a list of system requirements for all Edge components.

Installation log files

By default, the setup.sh utility writes log information about the installation to:

/opt/apigee/var/log/apigee-setup/setup.log

If the user running the setup.sh utility does not have access to that directory, it writes the log to the /tmp directory as a file named setup_username.log.

If the user does not have access to /tmp, the setup.sh utility fails.

Install Edge components

This section describes how to install Edge components for the different topologies. The order of component installation is based on your desired topology.

All of the installation example shown below assume that you are installing:

  • With Cassandra authentication disabled (default). See Enable Cassandra authentication for more.
  • With Postgres master-standby replication disabled (default). See Set up master-standby replication for Postgres for more.
  • Message Processor and Router on the same node. If you install the Message Processors and Routers on different nodes, install all the Message Processors first, and then all the Routers.

Prerequisites

Before you can install Edge components, you must:

  • Check the Installation requirements for prerequisites and a list of required files to obtain before proceeding with the installation. Ensure that you have reviewed the requirements before beginning the installation process.
  • Disable SELinux or set it to permissive mode. See Install the Edge apigee-setup utility for more.

All-in-one installation

  1. Install all components on a single node using the command:
    /opt/apigee/apigee-setup/bin/setup.sh -p aio -f configFile
  2. Restart the Classic UI component after the installation is complete:
    /opt/apigee/apigee-service/bin/apigee-service edge-ui restart

    This applies to the Classic UI, not the new Edge UI whose component name is edge-management-ui.

  3. Test the installation as described at Test the install.
  4. Onboard your organization as described at Onboard an organization.

See a video of an Edge all-in-one install here.

Shown below is a silent configuration file for this topology. For a complete reference on the config file, see Edge Configuration File Reference.

# With SMTP
IP1=IP_or_DNS_name_of_Node_1
HOSTIP=$(hostname -i)
ENABLE_SYSTEM_CHECK=y
ADMIN_EMAIL=opdk@google.com
# Admin password must be at least 8 characters long and contain one uppercase
# letter, one lowercase letter, and one digit or special character
APIGEE_ADMINPW=ADMIN_PASSWORD
LICENSE_FILE=/tmp/license.txt
MSIP=$IP1
LDAP_TYPE=1
APIGEE_LDAPPW=LDAP_PASSWORD
MP_POD=gateway
REGION=dc-1
ZK_HOSTS="$IP1"
ZK_CLIENT_HOSTS="$IP1"
# Must use IP addresses for CASS_HOSTS, not DNS names.
CASS_HOSTS="$IP1"
# Default is postgres
PG_PWD=postgres
SKIP_SMTP=n
SMTPHOST=smtp.example.com
SMTPUSER=smtp@example.com
# omit for no username
SMTPPASSWORD=SMTP_PASSWORD
# omit for no password
SMTPSSL=n
SMTPPORT=25
SMTPMAILFROM="My Company <myco@company.com>"

2-node standalone installation

See Installation topologies for the list of Edge topologies and node numbers.

  1. Install Standalone Gateway and node 1
    /opt/apigee/apigee-setup/bin/setup.sh -p sa -f configFile
  2. Install Analytics on node 2:
    /opt/apigee/apigee-setup/bin/setup.sh -p sax -f configFile
  3. Restart the Classic UI component on node 1:
    /opt/apigee/apigee-service/bin/apigee-service edge-ui restart

    This applies to the Classic UI, not the new Edge UI whose component name is edge-management-ui.

  4. Test the installation as described at Test the install.
  5. Onboard your organization as described at Onboard an organization.

Shown below is a silent configuration file for this topology. For a complete reference on the config file, see Edge Configuration File Reference.

# With SMTP
IP1=IP_of_Node_1
HOSTIP=$(hostname -i)
ENABLE_SYSTEM_CHECK=y
ADMIN_EMAIL=opdk@google.com
APIGEE_ADMINPW=ADMIN_PASSWORD
LICENSE_FILE=/tmp/license.txt
MSIP=$IP1
LDAP_TYPE=1
APIGEE_LDAPPW=LDAP_PASSWORD
MP_POD=gateway
REGION=dc-1
ZK_HOSTS="$IP1"
ZK_CLIENT_HOSTS="$IP1"
# Must use IP addresses for CASS_HOSTS, not DNS names.
CASS_HOSTS="$IP1"
# Default is postgres
PG_PWD=postgres
SKIP_SMTP=n
SMTPHOST=smtp.example.com
SMTPUSER=smtp@example.com
# omit for no username
SMTPPASSWORD=SMTP_PASSWORD
# omit for no password
SMTPSSL=n
SMTPPORT=25
SMTPMAILFROM="My Company <myco@company.com>"

5-node installation

See Installation topologies for the list of Edge topologies and node numbers.

  1. Install Datastore cluster on nodes 1, 2 and 3:
    /opt/apigee/apigee-setup/bin/setup.sh -p ds -f configFile
  2. Install Management Server on node 1:
    /opt/apigee/apigee-setup/bin/setup.sh -p ms -f configFile
  3. Install Router and Message Processor on nodes 2 and 3:
    /opt/apigee/apigee-setup/bin/setup.sh -p rmp -f configFile
  4. Install Analytics on node 4 and 5:
    /opt/apigee/apigee-setup/bin/setup.sh -p sax -f configFile
  5. Restart the Classic UI component on node 1:
    /opt/apigee/apigee-service/bin/apigee-service edge-ui restart

    This applies to the Classic UI, not the new Edge UI whose component name is edge-management-ui.

  6. Test the installation as described at Test the install.
  7. Onboard your organization as described at Onboard an organization.

Shown below is a silent configuration file for this topology. For a complete reference on the config file, see Edge Configuration File Reference.

# With SMTP
IP1=IP_of_Node_1
IP2=IP_of_Node_2
IP3=IP_of_Node_3
IP4=IP_of_Node_4
IP5=IP_of_Node_5
HOSTIP=$(hostname -i)
ENABLE_SYSTEM_CHECK=y
ADMIN_EMAIL=opdk@google.com
APIGEE_ADMINPW=ADMIN_PASSWORD
LICENSE_FILE=/tmp/license.txt
MSIP=$IP1
USE_LDAP_REMOTE_HOST=n
LDAP_TYPE=1
APIGEE_LDAPPW=LDAP_PASSWORD
MP_POD=gateway
REGION=dc-1
ZK_HOSTS="$IP1 $IP2 $IP3"
ZK_CLIENT_HOSTS="$IP1 $IP2 $IP3"
# Must use IP addresses for CASS_HOSTS, not DNS names.
CASS_HOSTS="$IP1 $IP2 $IP3"
# Default is postgres
PG_PWD=postgres
PG_MASTER=$IP4
PG_STANDBY=$IP5
SKIP_SMTP=n
SMTPHOST=smtp.example.com
SMTPUSER=smtp@example.com
# omit for no username
SMTPPASSWORD=SMTP_PASSWORD
# omit for no password
SMTPSSL=n
SMTPPORT=25
SMTPMAILFROM="My Company <myco@company.com>"

9-node clustered installation

See Installation topologies for the list of Edge topologies and node numbers.

  1. Install Datastore Cluster Node on node 1, 2 and 3:
    /opt/apigee/apigee-setup/bin/setup.sh -p ds -f configFile
  2. Install Apigee Management Server on node 1:
    /opt/apigee/apigee-setup/bin/setup.sh -p ms -f configFile
  3. Install Router and Message Processor on nodes 4 and 5:
    /opt/apigee/apigee-setup/bin/setup.sh -p rmp -f configFile
  4. Install Apigee Analytics Qpid Server on node 6 and 7:
    /opt/apigee/apigee-setup/bin/setup.sh -p qs -f configFile
  5. Install Apigee Analytics Postgres Server on node 8 and 9:
    /opt/apigee/apigee-setup/bin/setup.sh -p ps -f configFile
  6. Restart the Classic UI component on node 1:
    /opt/apigee/apigee-service/bin/apigee-service edge-ui restart

    This applies to the Classic UI, not the new Edge UI, whose component name is edge-management-ui.

  7. Test the installation as described at Test the install.
  8. Onboard your organization as described at Onboard an organization.

Shown below is a silent configuration file for this topology. For a complete reference on the config file, see Edge Configuration File Reference.

# With SMTP
IP1=IP_of_Node_1
IP2=IP_of_Node_2
IP3=IP_of_Node_3
IP8=IP_of_Node_8
IP9=IP_of_Node_9
HOSTIP=$(hostname -i)
ENABLE_SYSTEM_CHECK=y
ADMIN_EMAIL=opdk@google.com
APIGEE_ADMINPW=ADMIN_PASSWORD
LICENSE_FILE=/tmp/license.txt 
MSIP=$IP1 
USE_LDAP_REMOTE_HOST=n 
LDAP_TYPE=1
APIGEE_LDAPPW=LDAP_PASSWORD
MP_POD=gateway
REGION=dc-1 
ZK_HOSTS="$IP1 $IP2 $IP3" 
ZK_CLIENT_HOSTS="$IP1 $IP2 $IP3" 
# Must use IP addresses for CASS_HOSTS, not DNS names.
# Optionally use Cassandra racks
CASS_HOSTS="$IP1 $IP2 $IP3" 
# Default is postgres
PG_PWD=postgres
SKIP_SMTP=n
PG_MASTER=$IP8
PG_STANDBY=$IP9
SMTPHOST=smtp.example.com
SMTPUSER=smtp@example.com
# omit for no username
SMTPPASSWORD=SMTP_PASSWORD
# omit for no password
SMTPSSL=n
SMTPPORT=25
SMTPMAILFROM="My Company <myco@company.com>"

13-node clustered installation

This section describes the order of installation for a 13-node cluster. For a list of Edge topologies and node numbers, see Installation topologies.

The order of installation for a 13-node cluster is as follows:

  1. Install Datastore Cluster Node on node 1, 2 and 3:
    /opt/apigee/apigee-setup/bin/setup.sh -p ds -f configFile
  2. Install OpenLDAP on node 4 and 5:
    /opt/apigee/apigee-setup/bin/setup.sh -p ld -f configFile
  3. Install Apigee Management Server on node 6 and 7:
    /opt/apigee/apigee-setup/bin/setup.sh -p ms -f configFile
  4. Install Apigee Analytics Postgres Server on node 8 and 9:
    /opt/apigee/apigee-setup/bin/setup.sh -p ps -f configFile
  5. Install Router and Message Processor on nodes 10 and 11:
    /opt/apigee/apigee-setup/bin/setup.sh -p rmp -f configFile
  6. Install Apigee Analytics Qpid Server on node 12 and 13:
    /opt/apigee/apigee-setup/bin/setup.sh -p qs -f configFile
  7. Restart the Classic UI component on nodes 6 and 7:
    /opt/apigee/apigee-service/bin/apigee-service edge-ui restart

    This applies to the Classic UI, not the new Edge UI whose component name is edge-management-ui.

  8. Test the installation as described at Test the install.
  9. Onboard your organization as described at Onboard an organization.

Shown below is a sample silent configuration file for this topology. For a complete reference on the config file, see Edge Configuration File Reference.

# For all nodes except IP4 and IP5
# (which are the OpenLDAP nodes)
IP1=IP_of_Node_1
IP2=IP_of_Node_2
IP3=IP_of_Node_3
IP4=IP_of_Node_4
IP5=IP_of_Node_5
IP6=IP_of_Node_6
IP7=IP_of_Node_7
IP8=IP_of_Node_8
IP9=IP_of_Node_9
HOSTIP=$(hostname -i)
ENABLE_SYSTEM_CHECK=y
ADMIN_EMAIL=opdk@google.com
APIGEE_ADMINPW=ADMIN_PASSWORD
LICENSE_FILE=/tmp/license.txt
# Management Server on IP6 only
MSIP=$IP6
USE_LDAP_REMOTE_HOST=y
LDAP_HOST=$IP4
LDAP_PORT=10389
# Management Server on IP7 only
# MSIP=$IP7
# USE_LDAP_REMOTE_HOST=y
# LDAP_HOST=$IP5
# LDAP_PORT=10389
# Use the same password for both OpenLDAP nodes
APIGEE_LDAPPW=LDAP_PASSWORD 
MP_POD=gateway
REGION=dc-1
ZK_HOSTS="$IP1 $IP2 $IP3"
ZK_CLIENT_HOSTS="$IP1 $IP2 $IP3"
# Must use IP addresses for CASS_HOSTS, not DNS names.
# Optionally use Cassandra racks
CASS_HOSTS="$IP1 $IP2 $IP3"
# Default is postgres
PG_PWD=postgres
PG_MASTER=$IP8
PG_STANDBY=$IP9
SKIP_SMTP=n
SMTPHOST=smtp.example.com
SMTPUSER=smtp@example.com
# omit for no username
SMTPPASSWORD=SMTP_PASSWORD
# omit for no password
SMTPSSL=n
SMTPPORT=25
SMTPMAILFROM="My Company <myco@company.com>"
# For OpenLDAP nodes only (IP4 and IP5)
IP1=IP_of_Node_1
IP2=IP_of_Node_2
IP3=IP_of_Node_3
IP4=IP_of_Node_4
IP5=IP_of_Node_5
IP6=IP_of_Node_6
IP7=IP_of_Node_7
IP8=IP_of_Node_8
IP9=IP_of_Node_9
HOSTIP=$(hostname -i)
ENABLE_SYSTEM_CHECK=y
ADMIN_EMAIL=opdk@google.com
APIGEE_ADMINPW=ADMIN_PASSWORD

# For the OpenLDAP Server on IP4 only
MSIP=$IP6
USE_LDAP_REMOTE_HOST=n
LDAP_TYPE=2
LDAP_SID=1
LDAP_PEER=$IP5

# For the OpenLDAP Server on IP5 only
# MSIP=$IP7
# USE_LDAP_REMOTE_HOST=n
# LDAP_TYPE=2
# LDAP_SID=2
# LDAP_PEER=$IP4
# Set same password for both OpenLDAPs.
APIGEE_LDAPPW=LDAP_PASSWORD

12-node clustered installation

Before you install Edge on a 12-node clustered topology (two data centers), you must understand how to set the ZooKeeper and Cassandra properties in the silent config file.

  • ZooKeeper

    For the ZK_HOSTS property for both data centers, specify the IP addresses or DNS names of all ZooKeeper nodes from both data centers, in the same order, and mark any nodes with the with :observer modifier. Nodes without the :observer modifier are called "voters". You must have an odd number of "voters" in your configuration.

    In this topology, the ZooKeeper host on host 9 is the observer:

    For the ZK_CLIENT_HOSTS property for each data center, specify the IP addresses or DNS names of only the ZooKeeper nodes in the data center, in the same order, for all ZooKeeper nodes in the data center. In the example configuration file shown below, node 9 is tagged with the :observer modifier so that you have five voters: Nodes 1, 2, 3, 7, and 8.

  • Cassandra

    All datacenters must to have the same number of Cassandra nodes.

    For CASS_HOSTS for each data center, ensure that you specify all Cassandra IP addresses (not DNS names) for both data centers. For data center 1, list the Cassandra nodes in that data center first. For data center 2, list the Cassandra nodes in that data center first. List the Cassandra nodes in the same order for all Cassandra nodes in the data center.

    All Cassandra nodes must have a suffix ":d,r". For example ip:1,1 = datacenter 1 and rack/availability zone 1; and ip:2,1 = datacenter 2 and rack/availability zone 1.

    For example, "192.168.124.201:1,1 192.168.124.202:1,1 192.168.124.203:1,1 192.168.124.204:2,1 192.168.124.205:2,1 192.168.124.206:2,1"

    The first node in rack/availability zone 1 of each datacenter will be used as the seed server.

    In this deployment model, Cassandra setup will look like the following:

See Installation topologies for the list of Edge topologies and node numbers.

  1. Install Datastore Cluster Node on node 1, 2, 3, 7, 8, and 9:
    /opt/apigee/apigee-setup/bin/setup.sh -p ds -f configFile
  2. Install Apigee Management Server with OpenLDAP replication on node 1 and 7:
    /opt/apigee/apigee-setup/bin/setup.sh -p ms -f configFile
  3. Install Router and Message Processor on nodes 2, 3, 8 and 9:
    /opt/apigee/apigee-setup/bin/setup.sh -p rmp -f configFile
  4. Install Apigee Analytics Qpid Server on node 4, 5, 10, and 11:
    /opt/apigee/apigee-setup/bin/setup.sh -p qs -f configFile
  5. Install Apigee Analytics Postgres Server on node 6 and 12:
    /opt/apigee/apigee-setup/bin/setup.sh -p ps -f configFile
  6. Restart the Classic UI component on nodes 1 and 7:
    /opt/apigee/apigee-service/bin/apigee-service edge-ui restart

    This applies to the Classic UI, not the new Edge UI whose component name is edge-management-ui.

  7. Test the installation as described at Test the install.
  8. Onboard your organization as described at Onboard an organization.

Shown below is a silent configuration file for this topology. For a complete reference on the config file, see Edge Configuration File Reference.

  • Configures OpenLDAP with replication across two OpenLDAP nodes.
  • Specifies the :observer modifier on one ZooKeeper node. In a single data center installation, omit that modifier.
# Datacenter 1
IP1=IP_of_Node_1
IP2=IP_of_Node_2
IP3=IP_of_Node_3
IP6=IP_of_Node_6
IP7=IP_of_Node_7
IP8=IP_of_Node_8
IP9=IP_of_Node_9
IP12=IP_of_Node_12
HOSTIP=$(hostname -i)
MSIP=$IP1
ENABLE_SYSTEM_CHECK=y
ADMIN_EMAIL=opdk@google.com
APIGEE_ADMINPW=ADMIN_PASSWORD
LICENSE_FILE=/tmp/license.txt
USE_LDAP_REMOTE_HOST=n
LDAP_TYPE=2
LDAP_SID=1
LDAP_PEER=$IP7
APIGEE_LDAPPW=LDAP_PASSWORD
MP_POD=gateway-1
REGION=dc-1
ZK_HOSTS="$IP1 $IP2 $IP3 $IP7 $IP8 $IP9:observer"
ZK_CLIENT_HOSTS="$IP1 $IP2 $IP3"
# Must use IP addresses for CASS_HOSTS, not DNS names.
# Optionally use Cassandra racks
CASS_HOSTS="$IP1:1,1 $IP2:1,1 $IP3:1,1 $IP7:2,1 $IP8:2,1 $IP9:2,1"
# Default is postgres
PG_PWD=postgres
PG_MASTER=$IP6
PG_STANDBY=$IP12
SKIP_SMTP=n
SMTPHOST=smtp.example.com
SMTPUSER=smtp@example.com
# omit for no username
SMTPPASSWORD=SMTP_PASSWORD
# omit for no password
SMTPSSL=n
SMTPPORT=25
SMTPMAILFROM="My Company <myco@company.com>"
# Datacenter 2
IP1=IP_of_Node_1
IP2=IP_of_Node_2
IP3=IP_of_Node_3
IP6=IP_of_Node_6
IP7=IP_of_Node_7
IP8=IP_of_Node_8
IP9=IP_of_Node_9
IP12=IP_of_Node_12
HOSTIP=$(hostname -i)
MSIP=$IP7
ENABLE_SYSTEM_CHECK=y
ADMIN_EMAIL=opdk@google.com
APIGEE_ADMINPW=ADMIN_PASSWORD
LICENSE_FILE=/tmp/license.txt
USE_LDAP_REMOTE_HOST=n
LDAP_TYPE=2
LDAP_SID=2
LDAP_PEER=$IP1
APIGEE_LDAPPW=LDAP_PASSWORD
MP_POD=gateway-2
REGION=dc-2
ZK_HOSTS="$IP1 $IP2 $IP3 $IP7 $IP8 $IP9:observer"
ZK_CLIENT_HOSTS="$IP7 $IP8 $IP9"
# Must use IP addresses for CASS_HOSTS, not DNS names.
# Optionally use Cassandra racks
CASS_HOSTS="$IP7:2,1 $IP8:2,1 $IP9:2,1 $IP1:1,1 $IP2:1,1 $IP3:1,1"
# Default is postgres
PG_PWD=postgres
PG_MASTER=$IP6
PG_STANDBY=$IP12
SKIP_SMTP=n
SMTPHOST=smtp.example.com
SMTPUSER=smtp@example.com
# omit for no username
SMTPPASSWORD=SMTP_PASSWORD
# omit for no password
SMTPSSL=n
SMTPPORT=25
SMTPMAILFROM="My Company <myco@company.com>"