Proposed Change

Updated Linux package scripts and install script to support user defined username and group.

• BDOT_USER: Defaults to bdot
• BDOT_GROUP: Defaults to bdot

These options are intended to be used during first install. We do not support modifying these options after initial install.

The updater did not require changes as it already dynamically sets the Systemd group based on the group configured in the install unit file. It does not set the user, nor does it need to. We use a systemd override when running as non root, the updater does not touch this override file.

Testing

Defaults

Local install and Test Kitchen are passing fine. All files that should be owned by bdot:bdot were verified successfully.

Custom user / group

I configured /etc/default/observiq-otel-collector.

BDOT_USER=otelu
BDOT_GROUP=otelg
BDOT_UNPRIVILEGED=true

After installing with the install script, permissions are set correctly:

$ sudo ls -la /opt/observiq-otel-collector/

total 324120
drwxr-xr-x 5 otelu otelg      4096 Aug 20 15:01 .
drwxr-xr-x 4 root  root       4096 Aug 20 15:01 ..
-rw-r--r-- 1 otelu otelg     11339 Mar  3 13:43 LICENSE
-rw-r--r-- 1 otelu otelg        44 Aug 20 14:59 VERSION.txt
-rw-r----- 1 otelu otelg      1293 Aug 20 14:59 config.yaml
drwxr-x--- 2 otelu otelg      4096 Aug 20 15:01 log
-rw-r----- 1 otelu otelg       232 Aug 20 14:59 logging.yaml
-rwxr-xr-x 1 otelu otelg 323416248 Aug 20 14:59 observiq-otel-collector
drwxr-x--- 2 otelu otelg      4096 Aug 20 15:01 plugins
drwxr-x--- 2 otelu otelg      4096 Aug 20 15:00 storage
-rwxr-xr-x 1 otelu otelg   8429752 Aug 20 14:59 updater

The process is running as otelu user.

$ sudo ps aux | grep otelu

otelu       7029  0.0  1.9 1544084 156892 ?      Ssl  15:01   0:00 /opt/observiq-otel-collector/observiq-otel-collector --config config.yaml

The systemd unit file and override** look correct:

sudo systemctl cat observiq-otel-collector
# /lib/systemd/system/observiq-otel-collector.service
[Unit]
Description=observIQ's distribution of the OpenTelemetry collector
After=network.target
StartLimitIntervalSec=120
StartLimitBurst=5
[Service]
Type=simple
User=root
Group=otelg
....

# /etc/systemd/system/observiq-otel-collector.service.d/10-package-customizations-username.conf
[Service]
User=otelu

**The systemd override logic was implemented previously, here #2443. This PR updates the postinall script to use the configured user instead of bdot.. defaulting to bdot.

Checklist

• Changes are tested
• CI has passed