Customize OneAgent installation on Linux

The Linux installer can be used with command line parameters when you can't use the default settings. Note that all parameters listed below are optional.

Passing installation parameters

To pass the parameters, append them to the installer command and separate them with spaces.

For example:
Dynatrace-OneAgent-Linux.sh --set-host-group=my_host_group --set-infra-only=true

New installation parameters

If you are installing or updating a suitable OneAgent version (see Minimum OneAgent version), we recommend that you use the new --set-param=<value> parameters listed below. The equivalent PARAM=<value> parameters continue to work for the time being, but they will be removed from future releases.

Old PARAM=<value> parameter	New --set-param=<value> parameter	Minimum OneAgent version
SERVER	--set-server	1.185
TENANT	--set-tenant	1.185
TENANT_TOKEN	--set-tenant-token	1.185
PROXY	--set-proxy	1.185
HOST_GROUP	--set-host-group	1.185
APP_LOG_CONTENT_ACCESS	--set-app-log-content-access	1.185
DISABLE_SYSTEM_LOGS_ACCESS	--set-system-logs-access-enabled	1.185
INFRA_ONLY	--set-infra-only	1.187

If you mix equivalent PARAM=<value> and --set-param=<value> settings, the --set-param=<value> setting overrides the PARAM=<value> setting.

Communication endpoint

Default value: environment specific

The address of the OneAgent communication endpoint, which is a Dynatrace component that OneAgent sends data to. Depending on your deployment, it can be a Dynatrace Server, Dynatrace Managed Cluster, or ActiveGate. If you install OneAgent using the Dynatrace Deploy page, this is already set to the correct value. To change it, use the IP address or a name. Add the port number following a colon.

To set the communication endpoint, pass it as a parameter value:
--set-server=https://100.20.10.1:443 (recommended since OneAgent version 1.185)
or
SERVER=https://100.20.10.1:443

If you need to change the server address after installation, use --set-server in the OneAgent command-line interface.

Environment ID

Default value: environment specific

The Dynatrace environment ID you received with your activation email. If you install OneAgent using the Dynatrace Deploy page, this is already set to the correct value. If you're selling Dynatrace-based services, use this option to set your customers' IDs from the pool of IDs you purchased from Dynatrace.

To set the environment ID, pass it as a parameter value:
--set-tenant=abcdefghij (recommended since OneAgent version 1.185)
or
TENANT=abcdefghij

If you need to change the tenant after installation, use --set-tenant in the OneAgent command-line interface.

Token

Default value: environment specific

The internal token that is used for authentication when OneAgent connects to the communication endpoint to send data. If you install OneAgent using the Dynatrace Deploy page, this is already set to the correct value.

To set a token, pass it as a parameter value:
--set-tenant-token=abcdefghij123456 (recommended since version 1.185)
or
TENANT_TOKEN=abcdefghij123456

See Access tokens to learn how to obtain a token.

If you need to change the tenant token after installation, use --set-tenant-token in the OneAgent command-line interface.

Network zones

Default value: unset

To learn about network zone naming rules and other reference information, see Network zones.

Use the --set-network-zone parameter to instruct OneAgent to communicate via the specified network zone:
--set-network-zone=your.network.zone

If you need to change the network zone assignment after installation, use --set-network-zone in OneAgent command-line interface.

Proxy

Default value: unset

The address of the proxy server. Use the IP address or a name, and add the port number following a colon. For an authenticating proxy you can specify a username and password like this username:password@172.1.1.128:8080 where both username and password need to be URL encoded.

To set a proxy, pass it as a parameter value:
--set-proxy=172.1.1.128:8080 (recommended since version 1.185)
or
PROXY=172.1.1.128:8080

Dynatrace also supports IPv6 addresses.

If you need to change the proxy address after installation, use --set-proxy in the OneAgent command-line interface.

Port range

OneAgent version 1.185

Default value: 50000:50100

Use the --set-watchdog-portrange=<arg> parameter to change the watchdog listening port range to <arg>. The <arg> must contain two port numbers separated by a colon (:). For example 50000:50100. The maximum supported port range is from 1024 to 65535. The port range must cover at least 4 ports. The port number starting the range must be lower.
For example:
--set-watchdog-portrange=50000:50100

If you need to change port range after installation, use --set-watchdog-portrange in OneAgent command-line interface.

Host group

Default value: unset

The name of a group you want to assign the host to. For details, see Organize your environment using host groups. Host group string requirements:

• Can contain only alphanumeric characters, hyphens, underscores, and periods
• Must not start with dt.
• Maximum length is 100 characters

To assign a host to the host group, pass the host group name as a parameter value:
–-set-host-group=My.HostGroup_123-456 (recommended since OneAgent version 1.185)
or
HOST_GROUP=My.HostGroup_123-456

To remove the host from a group, you must uninstall OneAgent or pass an empty value –-set-host-group="" when running a OneAgent update. You can't remove the host from a group using the HOST_GROUP parameter when updating OneAgent. The –-set-host-group parameter is available since OneAgent version 1.177. For more information, see OneAgent configuration via command-line interface.

Log Monitoring

Default value: true (OneAgent version 1.187+. For earlier versions false)

When set to true, allows OneAgent to access log files for the purpose of Log Monitoring. Accepted values are (true, false) or (1, 0). This option can alternatively be enabled/disabled through the Web UI.

For example: --set-app-log-content-access=true (recommended since version 1.185)
or
APP_LOG_CONTENT_ACCESS=true

If you need to enable or disble Log Monitoring after installation, use -set-app-log-content-access in OneAgent command-line interface.

Infrastructure monitoring mode

Default value: false

Activates Infrastructure monitoring mode, in place of full-stack monitoring mode. With this approach, you receive infrastructure-only health data, with no application or user performance data. For details, see Infrastructure monitoring.

To enable Infrastructure monitoring mode, set the parameter to:
--set-infra-only=true (recommended since version 1.187)
or
INFRA_ONLY=1

To disable Infrastructure monitoring mode, set the parameter to:
--set-infra-only=false (recommended since version 1.187)
or
INFRA_ONLY=0

If you need to change, enable, or disable Infrastructure monitoring mode after installation, use --set-infra-only in OneAgent command-line interface or set it using the Host settings page.

Custom host name

OneAgent version 1.189

Default value: unset

Use the --set-host-name to override an automatically detected host name. The host name value must not contain the <, >, &, CR (carriage return), and LF (line feed) characters and the maximum length is 256 characters.

To set the host name:
--set-host-name=myhostname

For versions earlier than 1.189, use a host name configuration file.

If you need to change the host name after installation, use --set-host-name in OneAgent command-line interface.

Custom host metadata

OneAgent version 1.189

Default value: unset

Once configured, custom metadata is displayed as a set of properties at the bottom of the Properties and tags section of the host overview page. The property values must not contain the = (except key-value delimiter) and whitespace characters. The maximum length is 256 characters including the key-value delimiter.

To add or change host properties:
--set-host-property=AppName --set-host-property=Environment=Dev

You can add or change more than one property in the same command.

For versions earlier than 1.189, use a host metadata configuration file.

If you need to change the host metadata after installation, use --set-host-property OneAgent command-line interface.

Custom host tags

OneAgent version 1.189

Default value: unset

Once configured, the tags are displayed at the top of the Properties and tags section of the host overview page. The property values must not contain the = (except key-value delimiter) and whitespace characters. The maximum length is 256 characters including the key-value delimiter.

For versions earlier than 1.189, use a host metadata configuration file.

To add or change host tags: --set-host-tag=TestHost --set-host-tag=role=fallback --set-host-tag=Gdansk

You can add or change more than one tag in the same command. It is allowed to define tags with the same key but different values.

If you need to change the host tags after installation, use --set-host-tag in OneAgent command-line interface.

Host ID source

OneAgent version 1.193

Default value: auto

This feature is currently supported only for Citrix Virtual Apps and Desktops.

It's particularly important to keep you host ID static in dynamic virtual environments where hosts are recreated on a daily basis.

To define the source for host ID generation, use --set-host-id-source and set it to one of the predefined values:

• auto let Dynatrace generate the host ID automatically
• ip-addresses generate host ID based on the host IP address
• ip-addresses;namespace=<namespace> if you monitor multiple environments, you can split the hosts with identical IPs using a different namespace for each environment. The namespace can contain only alphanumeric characters, hyphens, underscores, and periods; the maximum length is 256 characters.

For example, to set the host ID source to ip-addresses and assign it to a namespace called test, run the OneAgent installer with the following parameter:
--set-host-id-source="ip-addresses;namespace=test"

Installation path

Default value: /opt/dynatrace/oneagent

INSTALL_PATH parameter allows installation to a different directory. For example:
/bin/sh Dynatrace-OneAgent-Linux.sh INSTALL_PATH=/data/dynatrace/. When this parameter is used, the installer creates the symbolic link opt/dynatrace/oneagent -> /data/dynatrace and all OneAgent files are placed in the specified directory (in this example, /data/dynatrace). Note that this symbolic link needs to be removed manually, once OneAgent has been uninstalled. Using this parameter on Linux when SELinux is enabled requires the semanage binary to be available on your system.

Access to system logs

Default value: true

OneAgent downloads Linux system logs for the purpose of diagnosing issues that may be caused by conditions in your environment. For details, see System logs downloaded by OneAgent.

--set-system-logs-access-enabled=false disables access to logs (recommended since version 1.185)
--set-system-logs-access-enabled=true enables access to logs (recommended since version 1.185) or
DISABLE_SYSTEM_LOGS_ACCESS=1 disables access to logs DISABLE_SYSTEM_LOGS_ACCESS=0 enables access to logs

If you need to change this access after installation, use the OneAgent command-line interface:

Note that this is a self-diagnostics setting and is not related to Log Monitoring.

Non-privileged mode

NON_ROOT_MODE

Default value: 1 (OneAgent version 1.193+. For earlier versions 0)

When you install OneAgent in non-privileged mode, you only need to grant elevated privileges to OneAgent during the installation. Elevated privileges are dropped as soon as OneAgent is deployed.

Since version 1.193, OneAgent is installed in non-privileged mode by default. Existing installations aren't switched to non-privileged mode.

To switch an installed OneAgent to non-privileged mode, you need to manually append the NON_ROOT_MODE=1 parameter to the installation command. Example: sudo /bin/sh Dynatrace-Agent-Linux-1.0.0.sh NON_ROOT_MODE=1
To switch the installer back to the default mode for consecutive updates, run it with NON_ROOT_MODE=0.

Note that non-privileged mode requires Linux kernel capabilities that are available in these versions:

• Linux kernel version 2.6.26+ for OneAgent installation without root privileges.
• Linux kernel version 4.3+ (recommended systemd version 221+) for OneAgent automatic updates and full operation without root privileges. For more information, see Linux non-privileged mode

DISABLE_ROOT_FALLBACK

Default value: 0

Used in conjunction with the NON_ROOT_MODE parameter to block the superuser permission level for OneAgent run in the non-privileged mode. The root privileges are required for automatic updates and selected operations on kernel versions between 2.6.26 and 4.3, that is versions without the support for Linux ambient capabilities.

sudo /bin/sh Dynatrace-OneAgent-Linux-1.0.0.sh NON_ROOT_MODE=1 DISABLE_ROOT_FALLBACK=1

To switch the installer back to use the superuser permission level for subsequent updates, run it with DISABLE_ROOT_FALLBACK=0.

For more information, see the permission requirements for OneAgent installation and operation on Linux.

Specifying non-privileged user and group

USER

Default value: dtuser

Specifies the name of the non-privileged user, which is used by unprivileged OneAgent processes. Unprivileged processes are those that don't need root privileges. These processes on Linux are called Network OneAgent and Plugin OneAgent.

• The default behavior is that the Dynatrace installer uses dtuser for the name of the unprivileged user.
• If the USER=<username> parameter is specified, the installer uses <username> as the name of the unprivileged user.

In either case, the Dynatrace installer checks whether a required user (dtuser or the user specified by the USER parameter) already exists in the system.

• If a user and a group with the same name both exist and this user has that group set as its primary one, the user is used to start the OneAgent network and plugin modules.
• If a user doesn't exist, the Dynatrace installer creates this user and group and later starts these unprivileged processes with this new user.
• If a user exists in the system but doesn't have a group with the same name set as its primary one, the installation is aborted—to use a group with a different name, you must use the GROUP parameter.

USER string requirements:

• Can contain only alphanumeric characters, hyphen -, underscore _, and dot .
• Minimum length is 3 characters
• Maximum length is 32 characters
• Can't be a user identifier string

GROUP

Default value: dtuser

Can only be used in conjunction with the USER parameter and is used to specify the primary group for the user passed via the USER parameter. If you don't specify the GROUP parameter, the installer assumes it's the same as the USER, for both existing and non-existing users. If you specify the group using the GROUP parameter, and a user doesn't exist, the installer creates the user and assigns it to the specified group. You also use the GROUP parameter to specify an unprivileged user that belongs to a specific group, with a different name than the user name. To harden your system security, we strongly recommend use of a dedicated user group to run OneAgent processes.

GROUP string requirements:

• Can contain only alphanumeric characters, hyphen -, underscore _, and dot .
• Minimum length is 3 characters
• Maximum length is 32 characters
• Can't be a group identifier string