Short note: redirect local root mails (cron, mdadm, …) to an external address:
# install postfix
apt-get install postfix
# add alias for root
echo "root: otto@example.com" >> /etc/aliases
# reload aliases for postfix
newaliases
The Vigor 130 works very well as VDSL (Vectoring) modem in connection with a Sophos UTM. Therefore the modem is configured in PPPOE pass-through mode – this way all connection related details like credentials are configured by the Sophos UTM.
Because the vigor 130 has only one Ethernet interface I always had to re-plug some network cables just to watch the DSL status via the webinterface of the „modem“.
Here are some hints on how to connect to the modem interface (using just basic routing).
In my case my LAN subnet is 192.168.23.0/24.
here: 192.168.24.0/24, ip of the modem: 192.168.24.2
the vigor allows not to change the default route, but that is also not neccessary if you have only one LAN subnet.
In my setup the WAN interface is used as PPPOE interface for the modem, but its easy to add the modem subnet on top of it:
you should now be able to connect to your modem webinterface from your LAN via http://192.168.24.2/
To ignore hostkey checking for a subnet (i.e. when hosts got changed/provisioned/scaled often) use the following snippet:
# ~/.ssh/config Host 172.18.* StrictHostKeyChecking no UserKnownHostsFile=/dev/null
But use with care, in general hostkey checking is a good idea!
How to force a filesystem check on next boot?
touch /forcefsck
Since macOS sierra the system don’t adds ssh-keys to the agent automatically anymore. Add the following ssh-config file to restore the previous behaviour:
# ~/.ssh/config
Host *
UseKeychain yes
AddKeysToAgent yes
after connecting to a remote shell and typing the passphrase once the key/passphrase will be remembered in the macOS keychain.
Nginx has unfortunately no really usable „rewrite log“ for regex location matches. But you can create your own small (but sometimes very useful) debug output:
location ~ ^/(.*?)/(.*) {
return 200 'Debug: 1:$1 2:$2';
add_header Content-Type text/plain;
# try_files $uri /$1/index.php?$args;
}
Nginx now simply returns the generated content:
Debug: 1:xxxxx 2:yyyyy
The add_header statement is used to force text-output if you’re debugging using a web-browser (otherwise a download would be created).
A bit Elasticsearch dominated this time ;-)