From a5c74fee7e7e3b819092a26c7988f452bd80f2cc Mon Sep 17 00:00:00 2001
From: Agent <agent@example.com>
Date: Sat, 18 Apr 2026 11:51:36 +0000
Subject: [PATCH] =?UTF-8?q?fix:=20[nomad-step-5]=20S5-fix-5=20=E2=80=94=20?=
 =?UTF-8?q?chat.hcl=20tmpfs=20syntax:=20use=20mount=20block=20not=20tmpfs?=
 =?UTF-8?q?=20argument=20(#1012)?=
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---
 nomad/jobs/chat.hcl | 23 ++++++++++++++++-------
 1 file changed, 16 insertions(+), 7 deletions(-)

diff --git a/nomad/jobs/chat.hcl b/nomad/jobs/chat.hcl
index ead8e71..195f728 100644
--- a/nomad/jobs/chat.hcl
+++ b/nomad/jobs/chat.hcl
@@ -10,7 +10,7 @@
 #
 # Sandbox hardening (#706):
 #   - Read-only root filesystem (enforced via entrypoint)
-#   - tmpfs /tmp:size=64m for runtime temp files
+#   - tmpfs /tmp for runtime temp files (64MB)
 #   - cap_drop ALL (no Linux capabilities)
 #   - pids_limit 128 (prevent fork bombs)
 #   - mem_limit 512m (matches compose sandbox hardening)
@@ -89,19 +89,28 @@ job "chat" {
       config {
         image      = "disinto/chat:local"
         force_pull = false
-        # Sandbox hardening (#706): cap_drop ALL (no Linux capabilities)
-        # tmpfs /tmp for runtime files (64MB)
-        # pids_limit 128 (prevent fork bombs)
         # ReadonlyRootfs enforced via entrypoint script (fails if running as root)
-        cap_drop   = ["ALL"]
-        tmpfs      = ["/tmp:size=64m"]
-        pids_limit = 128
         # Security options for sandbox hardening
         # apparmor=unconfined needed for Claude CLI ptrace access
         # no-new-privileges prevents privilege escalation
         security_opt = ["apparmor=unconfined", "no-new-privileges"]
       }
 
+      # ── Sandbox hardening (#706) ────────────────────────────────────────────
+      # cap_drop ALL (no Linux capabilities)
+      # tmpfs /tmp for runtime files (64MB)
+      # pids_limit 128 (prevent fork bombs)
+      cap_drop        = ["ALL"]
+      pids_limit      = 128
+      mount {
+        type     = "tmpfs"
+        target   = "/tmp"
+        readonly = false
+        tmpfs_options {
+          size = 67108864  # 64MB in bytes
+        }
+      }
+
       # ── Volume mounts ──────────────────────────────────────────────────────
       # Mount chat-history for conversation persistence
       volume_mount {