geneos

README

geneos Utility

The geneos utility will help you manage your Geneos environment.

The documentation for commands and their options is here

Features

• Initialise a new installation with a single command
• Adopt an existing installation created using older tools
• Operate Geneos across a group of servers with a single command
• Create Geneos compatible AES256 encoded passwords and other credentials
• Manage certificates for TLS connectivity between Geneos components
• Change instance settings without editing files
• Download, install and update Geneos software
• Simple installation of Self-Announcing and Floating Netprobes

Aims

• To make your life easier; at least the Geneos part
• Keep it simple through the Principle of least astonishment
• Help you use automation tools with Geneos

Getting Started

First download the latest pre-built binary and make it executable, then install it in a directory you can run it from.

curl -OL https://github.com/ITRS-Group/cordial/releases/download/v1.5.0/geneos-v1.5.0
chmod + x /geneos-v1.5.0
mv geneos-v1.5.0 ${HOME}/bin/geneos

If you prefer you can build from source. For more details see Installation.

You are now ready to go!

If you are on a system or in a container without Geneos, you can try:

geneos init demo -u you@example.com

You will be prompted for your download password and then, after a short while, you will have a running Geneos Demo environment!

Typical Commands

For typical commands the command line will be like this:

geneos COMMAND [flags] [TYPE] [NAMES...]

• COMMAND is the one or two word name of the command
• flags are dash or double-dash prefixed options. Many of these options will require arguments and the details for each command will be in the help text.
• TYPE is the optional component type
• NAMES is an optional list of instance names. They can have an optional @HOST suffix which restricts the match to only the configured HOST.

The overall goal when choosing command names and their options has been to make things more intuitive rather than less. This is not always possible and so some options will be different between commands while performing the same task; One examples is the -f (follow) flags for logs which has similar functionality to the -l (logs) flag for init commands.

Adopting An Existing Installation

If you have a running Geneos environment and you currently use older ITRS tools like gatewayctl and netprobectl to manage it then you can start using the new geneos program straight away! There are a couple of options, but the simplest is to tell geneos where the existing Geneos installation is:

geneos config set geneos=/path/to/geneos

The path you need to use above is the one that contains the bin directory that the existing gatewayctl etc. are located in, typically /opt/itrs or /home/geneos. If you happen to have an environment variable ITRS_HOME already set then you can skip the above step altogether. You can just try listing existing Geneos instances like this, without any risk of changes:

geneos list

If this works then you are ready.

Legacy Command Emulation

To help you migrate from older tools to geneos, the program will emulate the syntax of the older command (with some restrictions, such as no create emulation) if run using those names.

This allows your users or existing automations to continue to work as before.

To back-up your old scripts and create the right link to the new geneos program just run:

geneos migrate -X

This will rename any *ctl programs for Geneos components to an .orig suffix and then create a link to the current location of the geneos program.

To reverse this simply run:

geneos revert -X

This works by taking the first part of the executable name and mapping it to the component type, so for example a legacy command TYPEctl NAME COMMAND becomes geneos COMMAND TYPE NAME

The word all instead of a specific instance name is supported as expected.

Concepts & Terminology

We assumes familiarity with the ITRS Geneos products.

Many of the terms used by the geneos program have been inherited from earlier systems.

Components

A Component is a stand-alone software release that forms one part of the ITRS Geneos product.

The currently supported Component types are listed in Recognised Component Types.

A Component can also refer to a variety of another Component type. The most common one is a Self-Announcing Netprobe which is a variety of Netprobe.

Components are normally referred to as a TYPE in command help and documentation.

Components (more specifically the software releases that they are made up of) are managed through the package subsystem.

Hosts

A Host is the location that components are installed and can be operated. There is always a localhost. There is also a special all host keyword that is implied when no host is specified.

Normally commands will apply to all Hosts. Operations can be limited using the global option --host/-H for most commands.

Hosts are managed through the hosts subsystem.

Instances

An Instance is an example of the running context of a Component. An Instance is primarily made up of a working directory and a configuration file and optionally other related files. The geneos utility uses these to manage the lifecycle of a Component independently of other Instances of the same Component TYPE.

Instances are referred to as NAME in the command help and documentation.

Each Instance must have a unique case-insensitive name for that Component TYPE and on that HOST and must not be one of the reserved names.

Reserved name are those that would be ambiguous on the command line and include Component types and the aliases, command names and their aliases and some special terms (such as all or any).

An instance name can have a suffix that refers to the HOST it is located on in the form NAME@HOST. If not specified then commands will apply to all Instances of NAME across all hosts.

Instance Protection

Individual instances can be protected again being stopped or deleted by setting it to be protected.

geneos protect gateway IMPORTANT_GW

This also applies to almost any command that stops an instance, such as the more obvious ones like restart but also disable and others. The copy command, because it must be given the name for a source, does not check this setting. For most commands that do check the protection setting before running there is a --force flag to override the protection. The delete command already requires that an instance be disabled or called with the --force flag.

If you run geneos delete host HOSTNAME with the --stop flag to stop instance on the remote host first, then the protected settings is also checked and the command will terminate on the first error. This does however mean that unprotected instances on that host may have been stopped in the meantime.

The update command will not run if any protected instance is using the base symlink about to be updated.

Environment Settings

The geneos program uses the packages Cobra and Viper (the latter via a wrapper package) to provide the command syntax and configuration management. There is full support for Viper's layered configuration for non-instance settings, which means you can override global and user settings with environment variables prefixed ITRS_, e.g. ITRS_DOWNLOAD_USERNAME overrides download.username

Instance Settings

Every instance has a configuration file stored in a working directory. This is the most basic set-up for an instance. New instances that you create will have a configuration file named after the component type plus the file type extension .json. Older instances which you have adopted from older control scripts will have a configuration file with the extension .rc

Legacy Configuration Files

Historical (i.e. legacy) .rc files have a simple format like this:

GatePort=1234
GateUser=geneos

Where the prefix (Gate) also implies the component type and the suffix (Port) is the parameter. Any lines that do not contain the prefix are treated as environment variables and are evaluated and passed to the program on start-up. Parameter values that contain environment variables in the format ${HOME} will be expanded at run time. If the configuration is migrated, either through an explicit geneos migrate command or if a setting is changes through geneos set or similar then the value of the environment variable will be carried over and continue to be expanded at run-time. The geneos show command can be passed a --raw flag to show the unexpanded values, if any.

While the geneos program can parse and understand the legacy .rc files above it will never update them, instead migrating them to their .json equivalents either when required or when explicitly told to using the migrate command.

JSON Configuration Files

The .json configuration files share common parameters as well as component type specific settings. For simplicity some of these parameters have different meanings depending on the component type they apply to.

While editing the configuration files directly is possible, it is best to use the set and unset commands to ensure the syntax is correct.

Special parameters

All instances support custom environment variables being set or unset. This is done through the set and unset commands.

Some component types, Gateways, SANs and Floating Netprobes, support other special parameters through options to the various commands that create or edit instance configurations. See the help text for the set and unset commands for more details as well as add and the init subsystem.

To set an environment variable use this syntax:

geneos set netprobe example1 -e PATH_TO_SOMETHING=/file/path

If an entry already exists it is overwritten.

To remove an entry, use unset, like this

geneos unset netprobe example1 -e PATH_TO_SOMETHING

You can specify multiple entries by using the flag more than once:

geneos set netprobe example1 -e JAVA_HOME=/path -e ORACLE_HOME=/path2

If the value of the environment variable contains spaces then use quotes to prevent those spaces being caught by the shell. In bash you can do any of these to achieve the same result:

geneos set netprobe example1 -e MYVAR="a string with spaces"
geneos set netprobe example1 -e "MYVAR=a string with spaces"

You can review the environment for any instance using the show command:

geneos show netprobe example1

Also, output is available from the command command to show what would be run when calling the start command:

geneos command netprobe example1

Other special parameters behave in similar ways. Please see the command documentation for details.

File and URLs

Most configuration file values support URLs, e.g. importing certificate and keys, license files, etc.

The primary exception is for Gateway include files used in templated configurations. If these are given as URLs then they are used in the configuration as URLs.

Component Configuration

For compatibility with earlier tools, the per-component configurations are loaded from .rc files in the working directory of each component. The configuration names are also based on the original names, hence they can be obscure. the migrate command allows for the conversion of the .rc file to a JSON format one, the original .rc file being renamed to end .rc.orig and allowing the revert command to restore the original (without subsequent changes).

If you want to change settings you should first migrate the configuration and then use set to make changes.

Note that execution mode (e.g. GateMode) is not supported and all components run in the background.

Instance Configuration File

These configuration files - in JSON format - should be found in sub-directories under the geneos base directory (typiocally /opt/itrs, /opt/itrs/geneos or /opt/geneos) as GENEOS_BASE_DIRECTORY/TYPE/TYPEs/INSTANCE/TYPE.json where:

• GENEOS_BASE_DIRECTORY is the base directory for geneos.
• TYPE is the component type (licd, gateway, netprobe, san, fa2, fileagent or webservcer).
• TYPEs is the component type followed by the letter "s" (lowercase) to indicate a plural.
• INSTANCE is the instance name.
• TYPE.json is a the file name (e.g. licd.json, gateway.json, etc.).]

Installation

Download the binary

You can download a pre-built binary version (for Linux on amd64 only) from this link or like this:

curl -OL https://github.com/itrs-group/cordial/releases/latest/download/geneos
chmod 555 geneos
sudo mv geneos /usr/local/bin/

Build from source

To build from source you must have Go 1.20 or later installed:

One line installation

go install github.com/itrs-group/cordial/tools/geneos@latest

Make sure that the geneos program is in your normal PATH - or that $HOME/go/bin is if you used the method above - to make things simpler.

Download from github and build manually

Make sure you do not have an existing file or directory called geneos and then:

github clone https://github.com/itrs-group/cordial.git
cd geneos/cmd/geneos
go build
sudo mv geneos /usr/local/bin