Debian

OpnSense & ACME & NSUpdate (bind9 journal problem)

Bsd, Debian, Famille

If you need to use ACME plugin to register certificate (by using nsupdate (RFC2136)), you could be faced on the problem below

Nov  6 07:58:24 Sagitarius named[121]: client @0x7f68640c70d0 10.20.3.1#50544/key opnsense: signer "opnsense" approved
Nov  6 07:58:24 Sagitarius named[121]: client @0x7f68640c70d0 10.20.3.1#50544/key opnsense: updating zone 'clucas.fr/IN': adding an RR at '_acme-challenge.cloud-home.clucas.fr' TXT "-_UEEMEIYvUxwoHWhBbdxiSzil62dgNoHCBfZJCzIiE"
Nov  6 07:58:24 Sagitarius named[121]: /etc/bind/clucas.fr.zone.jnl: create: permission denied
Nov  6 07:58:24 Sagitarius named[121]: client @0x7f68640c70d0 10.20.3.1#50544/key opnsense: updating zone 'clucas.fr/IN': error: journal open failed: unexpected error

You can try to ’touch’ this file, here “clucas.fr.zone.jnl”. Even if you change owner, permission (even 777), you will not ble able to make it work. You will be face this time on :

xrv9k-full, qemu, AMD Ryzen

Cisco, Debian, Telecom

If as me you have EVE-NG (2.0.3) and lab some Cisco XRV9K-Full on a virtualized box running AMD Ryzen processor, you have probably encountered problem to start the image. After reading lot of website, it seems the answer is change the command line.

My original command line is :

-enable-kvm -smbios type=1,manufacturer="cisco",product=\"Cisco IOS XRv 9000\",uuid=[...] -cpu host

I correct to :

-enable-kvm -smbios type=1,manufacturer="cisco",product="Cisco IOS XRv 9000",uuid=[...] -cpu qemu64,+ssse3,+sse4.1,+sse4.2

Bind9 as master DNS server, NSD as backup with TSIG.

Bsd, Debian, Linux

Perhaps it seems easy for you, but it was not for me at begining even if I am running bind9 master/bind9 slave already.

We will begin with TSIG key, on your master DNS server :

root@Sagitarius:~# tsig-keygen mykey > /etc/bind/keys/mykey.key
root@Sagitarius:~# cat /etc/bind/keys/mykey.key
key "mykey" {
        algorithm hmac-sha256;
        secret "+OyXk+FYgsnE6Lei59Qi2LPsctRHPaqcYRpftG4YXKk=";
};
root@Sagitarius:~#

Now we will configure this on my “named.conf.local” file as :

root@Sagitarius:/etc/bind# cat named.conf.local 
[...]
//On indique la clé à utiliser et son algorithme de chiffrement
include "/etc/bind/keys/mykey.key";

//On indique l'adresse IP du serveur "Esclave"
server 192.168.1.81
{
        keys { mykey; };
};
[...]
zone "my-blah-zone.fr" {
       type master;
       file "/etc/bind/my-blah-zone.fr.zone";
       allow-transfer { 192.168.1.81; key mykey; };
       notify yes;
};
[...]

Ok. last command :

Some bashblog tests.

Code, Debian, Famille

For now I will not move from this blog motor, but I have tested bashblog because I have made some search of my really old blog post and it make me think about nanoblogger which is not ever maintained now. So I search only for curiosity if there is now this kind of project. Bashblog is this kind of work. Only some bash and a quick result.

It is simple, just configure EDITOR variable and let’s go :

FRR Routing v8.0 is out and happy to see SR

Bsd, Code, Debian, Telecom

Hey,

For (perhaps) futur projet I read different documentations around Bird, FRR Routing, … and I am really happy to see in FRR Routing v8.0 the new ‘pathd’ daemon, which implement SR (Segment Routing). It is really cool to see this.

There is others new feature which have been implemented in this release and are major IMHO.

  • TI-LFA for OSPF and IS-IS (great too for SR) ;
  • VRF for OSPFv3 ;
  • EVPN full-implementation.

It is really great work !!!

NextCloud and Memcached-APCu

Debian, Linux

For those of you which update your personal cloud to the lastest stable version of Nextcloud due to CVE (https://www.cert.ssi.gouv.fr/avis/CERTFR-2021-AVI-543/), you could encountered this error :

An unhandled exception has been thrown:
OC\HintException: [0]: Memcache \OC\Memcache\APCu not available for local cache (Is the matching PHP module installed and enabled?)

You could solve the issue :

echo 'apc.enable_cli=1' >> /etc/php/7.x/mods-available/apcu.ini

Have fun.

Dennis Ritchie : RIP

Code, Debian, Linux

As lot of people on twitter :

/* For Dennis Ritchie */
#include <stdio.h>
void main ( )
{
        printf("Good bye World n");
        printf("RIP Denis Ritchie");
}

Thank you for UNIX, thank you for C programming language !

Thank you : Dennis M. Ritchie