The idea is that server don't have easy console access for RS232 or VGA/PS2 access. We do have ethernet and to make this as reliable as possible, bypass the IP stack using cec.
git clone --mirror git://github.com/alejandroliu/lec.git /mirror/git/github.com/alejandroliu/lec.git
rm -rv /union/git/github.com/alejandroliu/lec.git
git clone /mirror/git/github.com/alejandroliu/lec.git /union/git/github.com/alejandroliu/lec.git
cd /union/git/github.com/alejandroliu/lec.git
--- /union/git/github.com/alejandroliu/lec.git/cec.h
+++ /union/git/github.com/alejandroliu/lec.git/cec.h
@@ -40 +40 @@ enum {
- CEC_ETYPE = 0xBCBC,
+ CEC_ETYPE = 0x893C,
make
Console of pet server configured to remove root password and make the font bigger, roughly as follows
cp /usr/system/getty.service /etc/systemd/system/getty@tty1.service sed 's/agetty --noclear/agetty --autologin root --noclear/' /etc/systemd/system/getty@tty1.service systemctl daemon-reload sed s/FONTFACE="Fixed"/FONTFACE="Terminus"/ /etc/default/console-setup sed s/FONTSIZE="16"/FONTFACE="16x32"/ /etc/default/console-setup
Let's make a systemd file to start up and supervise lecd in /etc/systemd/system/lecd.service
Recommend putting on a well protected vlan if using those, such as the highest privileged vlan in network.
[Unit] Requires=network.target After=network.target [Service] #ExecStartPre=/usr/lib/systemd/systemd-networkd-wait-online --interface=VLAN ExecStart=/union/git/github.com/alejandroliu/lec.git/lecd VLAN Type=idle Restart=always
start, stop and check this service with systemctl, also user can "accidently" kill lecd on the server to confirm that systemd will restart it.
Use /union/git/github.com/alejandroliu/lec.git/cec to interact with it from the client.