Linux, programming and more
While signing a certificate for a new OpenVPN user, I received the following error message which stops the whole process (exit code 1)
Certificate is to be certified until Nov 6 08:53:05 2023 GMT (3650 days)
Sign the certificate? [y/n]:y
failed to update database
TXT_DB error number 2
Problem:
Because you have generated your own self signed certificate with the same CN (Common Name) information that the CA certificate that you’ve generated before.
Enter another Common Name.
Since Debian 6 (squeeze) this is the working method to disable permanent IPv6 implementation. This method is also reboot safe.
cat /etc/sysctl.d/disable-ipv6.conf net.ipv6.conf.all.disable_ipv6=1 |
If you have no possibility to restart your system yet, this change can be made immediately work by executing:
sysctl -p /etc/sysctl.d/disable-ipv6.conf |
Anothe method – perfect for firewall scripts:
echo 1 > /proc/sys/net/ipv6/conf/all/disable_ipv6 |
I forgot to set the correct time zone as I installed my new Fedora 18 system.
So this can be also done after the completed installation:
1 | ln -sf /usr/share/zoneinfo/Europe/Berlin /etc/localtime |
The localtime symlink will show to the proper timezone file.
Two days after I installed Tiny Tiny RSS (ttrss) v1.7.2 was released a new version of it 1.7.4. Thats great!
To be able to install Update from preferences are some fixes in config.php required. Maybe its only my problem!?; but my updater was not active. [Read more…]
I came across this Apple specific DNS cache situation this morning.
I changed a DNS record for my GIT-server and was trying to access it again, the DNS was still showing the old IP-Address. After some attempts to clear Linux DNS cache with “rndc flush” I recognized that dns is was cached by my Mac.
Mac OS X keeps a local cache of successful resolved DNS queries for a time defined by the DNS server.
To clean DNS Cache in Mac OS X versions 10.7 and 10.8, run this command from your Terminal:
1 | sudo killall -HUP mDNSResponder |