Package: monit Version: 1:5.34.3-1 Severity: important Dear Maintainer,
After upgrading from Debian Bookworm to Trixie, Monit began failing to start whenever a "check program" block executes a script *directly*. Monit validates the configuration successfully (`monit -t` reports "Control file syntax OK"), but the daemon then crashes or starts without the HTTP interface, leading to `systemctl status monit` showing: monit.service: Main process exited, status=1/FAILURE This problem occurs only on Trixie’s Monit 5.34.3 package. The same config worked fine on Bookworm. ------------------------------------------------------------------------------- Minimal reproducible example ------------------------------------------------------------------------------- 1. Create a simple script: #!/bin/bash exit 1 2. Monit configuration that **fails**: check program test with path "/home/user/test.sh <https://bitli.pro/2Ehxf_cda8f386>" timeout 15 seconds if status != 0 then exec "/bin/true" 3. Monit reports configuration OK, but the daemon crashes or refuses HTTP. 4. Changing only the path to use a shell wrapper makes it work: check program test with path "/bin/sh -c '/home/user/test.sh <https://bitli.pro/2Ehxg_d8e2d88c>'" timeout 15 seconds if status != 0 then exec "/bin/true" With `/bin/sh -c`, Monit starts normally and all behavior is restored. Without it, Monit consistently fails on Trixie. ------------------------------------------------------------------------------- Real-world configuration that broke after upgrading ------------------------------------------------------------------------------- check program ISP with path "/home/pi/checkISP.sh <https://bitli.pro/2Ehxh_d7b03e4d>" timeout 15 seconds start program = "/home/pi/Mullvad.sh <https://bitli.pro/2Ehxi_16963e2f> start" timeout 15 seconds stop program = "/home/pi/Mullvad.sh <https://bitli.pro/2Ehxj_8a78cced> stop" timeout 15 seconds restart program = "/home/pi/Mullvad.sh <https://bitli.pro/2Ehxk_82bad976> restart" timeout 15 seconds if status != 0 for 2 cycles then restart if 5 restarts within 5 cycles then timeout This worked on Bookworm. On Trixie, Monit fails unless the script paths are rewritten: path "/bin/sh -c '/home/pi/checkISP.sh <https://bitli.pro/2Ehxl_b471b4eb> '" ------------------------------------------------------------------------------- Expected behavior ------------------------------------------------------------------------------- Monit should be able to execute a script directly via `check program` without requiring `/bin/sh -c`. ------------------------------------------------------------------------------- Actual behavior ------------------------------------------------------------------------------- - Monit daemon fails to start cleanly - `monit summary` reports “daemon not running” - systemd marks the service as exited with status=1 ------------------------------------------------------------------------------- System info ------------------------------------------------------------------------------- Debian version: 13 (Trixie) Package: monit 1:5.34.3-1 Init system: systemd 256 ------------------------------------------------------------------------------- Thank you.
