Flex Agent release notes

Restrict injectable environment variables to only those within the Contrast namespace. (CFA-565)

Force option added to the agent update command allowing re-download of existing agents. (CFA-221)

Capture CONTRAST_CONFIG_PATH as part of apps details for diagnostics. (CFA-342)

Restrict systemd service writes to only those files and directories required by the Flex Agent. (CFA-439)

Improve Application Fingerprint generation to handle more cases. (CFA-230)

Improve technology detection and reporting to include version of the detected technologies. (CFA-569)

Improve technology detection to account for file handlers added after process start. (CFA-543)

The monitor command has been merged with the standard service actions. (CFA-578)

The profile command now accounts for OS when determining if a process is suitable for Agent instrumentation. (CFA-595)

The profile command now accepts a --pid option to differentiate between processes running the same application. (CFA-600)

The apps list command has had UX improvements to better show the relationship between processes. (CFA-598)

The system-info command no longer requires an Agent to be present to generate a report. (CFA-579)

Improve gRPC pipe generation and management. (CFA-583)

Adjust gRPC client timeouts when making calls from the CLI to the Service. (CFA-593)

Errors from the gRPC client are now better enumerated. (CFA-605)

Honor configuration values set by file for the logger. (CFA-582)

The Flex Agent includes these agent versions:

The Flex Agent includes these agent versions:

The Flex Agent includes these agent versions:

The Flex Agent is available on Alpine version 3.24. (CFA-554)

The Flex Agent now reads its settings from environment variables, similar to other Contrast Agent technologies. (CFA-559)

The Flex Agent includes these agent versions:

Updated for bundled agents

The Flex Agent includes these agent versions:

Flex Agent now reports process lists to the Agent Dashboard. (CFA-452, CFA-455)

Flex Agent enables a Systemd service to facilitate reporting. (CFA-524)

Improve Flex Agent system and container usage details. (CFA-515)

The Flex Agent includes these agent versions:

Cache comms files ready by the agent attachment tool. (CFA-333)

The Flex Agent includes these agent versions:

When attaching the PHP agent to a process, update PHP_INI_SCAN_DIR to maintain its reading of the default directories set at compile time. (CFA-518)

The Flex Agent is now available for Ubuntu 26.04 - Resolute. (CFA-513)

The CLI for the Flex Agent has been updated to better clarify running state and conform to Contrast’s documentation standards. (CFA-425)

The Flex Agent includes these agent versions:

Use Rust’s libc crate to get current user rather than getuid C function. (CFA-467)

Set the umask on flex-comm and flex-agent directories explicitly rather than relying on the user not changing them after installation. (CFA-446)

Write the Flex Agent UUID marker on communications initialization, making it available once any action has executed. (CFA-504)

Add a check to the installation script to avoid overwriting the Flex Agent and injector if the same version is reinstalled. (CFA-512)

Support Go technology detection. (CFA-498)

The Flex Agent includes these agent versions:

If the attach_all_unknown_processes option is used to instrument .NET Core processes, a warning is logged. (CFA-462)

On agent download, file permissions are explicitly set, rather than relying on parent directory permissions, to ensure all applications have read access to the agent. (CFA-460)

On agent attachment, the Flex Agent provides a Flex UUID & Process Fingerprint for the language Agent to forward to the backend. (CFA-496)

The CLI no longer requires root permissions to run; however, it will warn if a non-root user performs an action that may have unexpected results under lower permissions. (CFA-505)

The Flex Agent includes these agent versions:

The buffer used to read comms files did not properly bound the read to ensure a null byte at the end of the read String. (CFA-506)

Previously, the Flex Agent allowed users to disable the integrity check on language agent downloads. That is no longer an optional part of the agent download. (CFA-463)

Agent attachment now honors environment variables, in addition to file markers, when deciding if an attempt should be made to attach to a given language. (CFA-474)

Expand the details provided by the apps command to show what technologies the application is using. (CFA-475)

The Flex Agent includes these agent versions:

The apps command now includes the PPID in its output.

The system-info command now includes the host’s IPs. (CFA-445)

The apps command for individual applications now includes Linux proc memory. (CFA-457)

The system-info command now includes host memory information and a --full option to report agent and process information. (CFA-454)

The AWS CLI is now excluded from attachment logic, no longer instrumented by the Python agent. (CFA-465)

All dependencies are now pinned to the exact version rather than the caret version against patches. (CFA-468)

The Flex Agent includes these agent versions:

The Flex Agent now runs connection testing to confirm reachability from the host machine to Contrast infrastructures as part of the installation process. (CFA-310)

The Flex Agent includes these agent versions:

The Flex Agent now properly identifies Python processes instrumented by the Python agent when the runner is used, avoiding replacing the directly invoked Python agent. (CFA-434)