Updating Raspberry Pi to Raspbian Stretch
...yes this blog is alive, sometimes...
Got some headache with instructions from https://www.raspberrypi.org/blog/raspbian-stretch/ with my eth0 interface.
While you running Debian / Raspbian Jessie (8) you world is fine with only one line "iface eth0 inet manual" in "/etc/network/interfaces" and looking like
pi@raspberrypi:~ $ ps ax|grep dhcp
426 ? Ss 1:14 /sbin/dhcpcd -q -b
But before dist-upgrade and reboot to Stretch (9.1 for today) do not forget add "auto eth0" to your "/etc/network/interfaces", so it will be looking like this:
auto eth0
iface eth0 inet dhcp
this will help you avoid missing eth0. Actually it could be found using "ifconfig -a" and "ifup eth0" in new world living with new dhcp client behavior where it started per interface and for each interface explicitly:
root@...:/home/tonchik# ps ax|grep dhcp
720 ? Ss 0:00 /sbin/dhclient -4 -v -pf /run/dhclient.eth0.pid -lf /var/lib/dhcp/dhclient.eth0.leases -I -df /var/lib/dhcp/dhclient6.eth0.leases eth0
PS: Not starting mosquitto after this upgrade? Do not worry, maybe all you need is "chown":
root@...:~# /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
1510085176: Error: Unable to open log file /var/log/mosquitto/mosquitto.log for writing.
root@...:~# ll /var/log/mosquitto/mosquitto.log
-rw-r--r-- 1 root root 85970 Nov 7 19:04 /var/log/mosquitto/mosquitto.log
root@...:~# chown -R mosquitto /var/log/mosquitto
Got some headache with instructions from https://www.raspberrypi.org/blog/raspbian-stretch/ with my eth0 interface.
While you running Debian / Raspbian Jessie (8) you world is fine with only one line "iface eth0 inet manual" in "/etc/network/interfaces" and looking like
pi@raspberrypi:~ $ ps ax|grep dhcp
426 ? Ss 1:14 /sbin/dhcpcd -q -b
But before dist-upgrade and reboot to Stretch (9.1 for today) do not forget add "auto eth0" to your "/etc/network/interfaces", so it will be looking like this:
auto eth0
iface eth0 inet dhcp
this will help you avoid missing eth0. Actually it could be found using "ifconfig -a" and "ifup eth0" in new world living with new dhcp client behavior where it started per interface and for each interface explicitly:
root@...:/home/tonchik# ps ax|grep dhcp
720 ? Ss 0:00 /sbin/dhclient -4 -v -pf /run/dhclient.eth0.pid -lf /var/lib/dhcp/dhclient.eth0.leases -I -df /var/lib/dhcp/dhclient6.eth0.leases eth0
PS: Not starting mosquitto after this upgrade? Do not worry, maybe all you need is "chown":
root@...:~# /usr/sbin/mosquitto -c /etc/mosquitto/mosquitto.conf
1510085176: Error: Unable to open log file /var/log/mosquitto/mosquitto.log for writing.
root@...:~# ll /var/log/mosquitto/mosquitto.log
-rw-r--r-- 1 root root 85970 Nov 7 19:04 /var/log/mosquitto/mosquitto.log
root@...:~# chown -R mosquitto /var/log/mosquitto