Collecting logs and reproducing issues slow down the diagnostics and degrade the user experience. The Tracing On feature eases such efforts. Tracing is enabled for the Linux VDA by default.
ctxlogd daemon and the
setlog utility are now included in the Linux VDA release package. By default, the
ctxlogd daemon starts after you install and configure the Linux VDA.
All the other services that are traced depend on the
ctxlogd daemon. You can stop the
ctxlogd daemon if you do not want to keep the Linux VDA traced.
Tracing On is configured using the
setlog utility, which is under the /opt/Citrix/VDA/bin/ path. Only the root user has the privilege to run it. You can use the GUI or run commands to view and change the configurations. Run the following command for help with the
setlog help <!--NeedCopy-->
By default, Log Output Path is set to /var/log/xdl/hdx.log, Max Log Size is set to 200 MB, and you can save up to two old log files under Log Output Path.
View the current
setlog values log_path (Log Output Path) = /var/log/xdl/hdx.log log_size (Max Log Size (MiB)) = 200 log_count (Max Old Log Files) = 2 <!--NeedCopy-->
View or set a single
setlog value <name> [<value>] <!--NeedCopy-->
setlog value log_size 100 <!--NeedCopy-->
By default, log levels are set to warning (case-insensitive).
To view log levels set for different components, run the following command:
setlog levels <!--NeedCopy-->
To set log levels (including Disabled, Inherited, Verbose, Information, Warnings, Errors, and Fatal Errors), run the following command:
setlog level <class> [<level>] <!--NeedCopy-->
|Log Level||Command Parameter (Case-Insensitive)|
<class> variable specifies one component of the Linux VDA. To cover all components, set it to all. For example:
setlog level all error <!--NeedCopy-->
By default, the flags are set as follows:
setlog flags DATE = true TIME = true NAME = true PID = true TID = false SID = true UID = false GID = false CLASS = false LEVEL = false FUNC = true FILE = false <!--NeedCopy-->
View the current flags:
setlog flags <!--NeedCopy-->
View or set a single log flag:
setlog flag <flag> [<state>] <!--NeedCopy-->
Revert all levels, flags, and values to the default settings:
setlog default <!--NeedCopy-->
ctxlogdservice is configured using the /var/xdl/.ctxlog file, which only root users can create. Other users do not have write permission to this file. Citrix recommends that root users not give write permission to other users. Failure to comply can cause the arbitrary or malicious configuration to
ctxlogd, which can affect server performance and therefore the user experience.
ctxlogd daemon fails and you cannot restart the
ctxlogd service when the /var/xdl/.ctxlog file is missing (for example, accidentally deleted).
Apr 1 02:28:21 RH72 citrix-ctxlogd: Failed to open logging configuration file. Apr 1 02:28:21 RH72 systemd: ctxlogd.service: main process exited, code=exited, status=1/FAILURE Apr 1 02:28:21 RH72 systemd: Unit ctxlogd.service entered failed state. Apr 1 02:28:21 RH72 systemd: ctxlogd.service failed. <!--NeedCopy-->
To solve this issue, run
setlog as a root user to recreate the /var/xdl/.ctxlog file. Then restart the
ctxlogd service on which other services depend.