Differences

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--- scraps [2024/05/17 13:25] – [Raspberry Pi Heartbeat] admin
+++ scraps [2025/03/13 13:08] (current) – millerjs
@@ Line 51: / Line 51: @@
 </code>
-===== Quick Pi ID =====
+===== cycle systemd logs =====
+<code>sudo journalctl --rotate ; sudo journalctl --vacuum-time=1s</code>
+==== show systemd logs from boot ====
+<code>sudo journalctl -b</code>
+===== Raspberry Pi =====
+==== Quick Pi ID ====
 Easy way to get a quick visual indicator to ID a Pi you're remoted into:
@@ Line 69: / Line 76: @@
 </code>
-===== Raspberry Pi =====
+==== Heartbeat LED ===
-====== Heartbeat LED =====
 set in config.txt
@@ Line 78: / Line 84: @@
 </code>
-===== Grow partition on first boot =====
+==== Grow partition on first boot ====
 Add to the end of /boot/cmdline.txt
@@ Line 212: / Line 218: @@
 allow
 cmdallow
+</code>
+===== Set NIC to promiscuous mode at boot =====
+Using systemd:
+`/etc/systemd/system/promisc-eth0.service`
+<code>
+[Unit]
+Description=Control promiscuous mode for interface eth0
+After=network.target
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/ip link set eth0 promisc on
+ExecStop=/usr/bin/ip link set eth0 promisc off
+RemainAfterExit=yes
+[Install]
+WantedBy=multi-user.target
 </code>