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crowdsec: own notification-slack plugin via C+ args, not a follow-up z #38

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Merged
phonkd merged 1 commit into from
Jul 19, 2026
Merged

crowdsec: own notification-slack plugin via C+ args, not a follow-up z #38

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28 changes: 18 additions & 10 deletions modules/homelab/apps/crowdsec.nix
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Original file line number Diff line number Diff line change
Expand Up @@ -149,16 +149,24 @@
};
# The plugin broker refuses plugin binaries not OWNED by the user
# crowdsec runs as — a symlink into the (root-owned) nix store
# fails that check, so copy the binary and chown it. C+ re-copies
# on every tmpfiles run, so package updates propagate; the z line
# fixes ownership/mode after each copy.
"/etc/crowdsec/plugins/notification-slack" = {
"C+".argument = "${config.services.crowdsec.package}/bin/notification-slack";
z = {
user = config.services.crowdsec.user;
group = config.services.crowdsec.group;
mode = "0750";
};
# fails that check, so copy the binary out and own it as crowdsec.
# C+ re-copies on every tmpfiles run, so package updates propagate.
#
# Set owner/mode as arguments ON the C+ line, NOT via a separate z
# line: the module owns the parent /etc/crowdsec/plugins as crowdsec,
# so a root-owned leaf (what C+ produces when mode/uid/gid are "-")
# is a crowdsec-dir → root-file "unsafe path transition". Modern
# systemd-tmpfiles aborts the WHOLE run (exit 73) on that, so the
# follow-up z never chowns, the plugin stays root-owned, and the
# crowdsec LAPI crash-loops refusing to load it (taking the firewall
# bouncer down with connection-refused). Copying straight to
# crowdsec:crowdsec keeps parent and leaf owners equal — no
# transition, one atomic op.
"/etc/crowdsec/plugins/notification-slack"."C+" = {
argument = "${config.services.crowdsec.package}/bin/notification-slack";
user = config.services.crowdsec.user;
group = config.services.crowdsec.group;
mode = "0750";
};
# Webhook config with the secret inline (see sops.templates above).
# Configs, unlike plugin binaries, may be symlinks.
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