Linux

How to configure a Vlan on Linux Mint ?

Install vlan

sudo apt-get install vlan

Configuration

root@mint:~# sudo modprobe 8021q

root@mint:~# ifconfig
ens19: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 10.10.18.83  netmask 255.255.255.0  broadcast 10.10.18.255
        inet6 2001:db8:1:2:9506:5fcd:1c61:1279  prefixlen 64  scopeid 0x0<global>
        inet6 2001:db8:1:2:a9:c50b:1348:1ec6  prefixlen 64  scopeid 0x0<global>
        inet6 2001:db8:1:2:e064:b0ec:a08f:7fd8  prefixlen 64  scopeid 0x0<global>
        inet6 2001:db8:1:2:a015:7ec:eef0:1a75  prefixlen 64  scopeid 0x0<global>
        inet6 2001:db8:1:2:a028:b890:ffe8:5231  prefixlen 64  scopeid 0x0<global>
        inet6 2001:db8:1:2:c80:addb:1273:95d5  prefixlen 64  scopeid 0x0<global>
        inet6 fe80::9cc2:b22d:cc15:2946  prefixlen 64  scopeid 0x20<link>
        ether 4e:e5:10:00:06:83  txqueuelen 1000  (Ethernet)
        RX packets 181  bytes 58337 (58.3 KB)
        RX errors 0  dropped 7  overruns 0  frame 0
        TX packets 271  bytes 48413 (48.4 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 138  bytes 13723 (13.7 KB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 138  bytes 13723 (13.7 KB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

root@mint:~# vconfig add ens19 158
Added VLAN with VID == 158 to IF -:ens18:-
root@mint:~#

root@mint:~# ip addr add 100.60.100.83/24 dev ens19.158
root@mint:~#

root@mint:~# ip link set up ens19.158
root@mint:~#

Make Permanent

sudo su -c 'echo "8021q" >> /etc/modules'

/etc/network/interfaces
auto ens19.158
iface ens19.158 inet static
    address 100.60.100.83
    netmask 255.255.255.0
    vlan-raw-device ens19.158
    up route add -net 10.0.0.0 netmask 255.0.0.0 gw 100.60.100.1

Any Comments ?

sha256: e69d61613b45307405014943049154d70c8cf140d2a3bcf5bbf7679fbefa798f

doas, an alternative to sudo

Everybody knows sudo … right ? but the openbsd guys hacked a small and secure replacement called doas …

simple, secure and clever

here a good and quick tutorial

An introduction on Vultr, the Source Code on Github and the Man Page

Installation OpenBSD

On OpenBSD, it’s already in the Base System and no need to install anything.

Installation Linux

On Linux, for Example, you have to add the Package

How to Install LibreNMS on Debian

https://docs.librenms.org/Installation/Installation-Ubuntu-1804-Apache/

Packages

apt-get install acl apache2 borgbackup curl fping hping3 htop ipcalc jq lftp lynx mlocate mtr nmap pwgen rsync sipcalc tmate tree tshark unzip vim vnstat wget zip curl apache2 composer fping git graphviz imagemagick python-memcache python-mysqldb rrdtool snmp snmpd whois mariadb-client mariadb-server mtr-tiny nmap libapache2-mod-php7.3

apt-get install php7.3-cli php7.3-curl php7.3-gd php7.3-json php7.3-mbstring php7.3-mysql php7.3-snmp php7.3-xml php7.3-zip

add User

useradd librenms -d /opt/librenms -M -r
usermod -a -G librenms www-data

get Git

cd /opt
git clone https://github.com/librenms/librenms.git

set Permission

chown -R librenms:librenms /opt/librenms
chmod 770 /opt/librenms
setfacl -d -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/
setfacl -R -m g::rwx /opt/librenms/rrd /opt/librenms/logs /opt/librenms/bootstrap/cache/ /opt/librenms/storage/

add Dependencis

su - librenms
./scripts/composer_wrapper.php install --no-dev
exit

Configure MySQL

systemctl restart mysql
mysql -uroot -p

CREATE DATABASE librenms CHARACTER SET utf8 COLLATE utf8_unicode_ci;
CREATE USER 'librenms'@'localhost' IDENTIFIED BY 'password';
GRANT ALL PRIVILEGES ON librenms.* TO 'librenms'@'localhost';
FLUSH PRIVILEGES;
exit

MySQL Conf

vi /etc/mysql/mariadb.conf.d/50-server.cnf

Within the [mysqld] section please add:
innodb_file_per_table=1
lower_case_table_names=0

systemctl restart mysql

PHP Ini

vi /etc/php/7.3/apache2/php.ini
[Date]
date.timezone = Europe/Zurich

vi /etc/php/7.3/cli/php.ini
[Date]
date.timezone = Europe/Zurich

Update Apache

a2enmod php7.3
a2dismod mpm_event
a2enmod mpm_prefork

Configure Apache

cat << EOF > /etc/apache2/sites-available/librenms.conf
<VirtualHost *:80>
  DocumentRoot /opt/librenms/html/
  ServerName  host211.planet

  AllowEncodedSlashes NoDecode
  <Directory "/opt/librenms/html/">
    Require all granted
    AllowOverride All
    Options FollowSymLinks MultiViews
  </Directory>
</VirtualHost>
EOF

Enable Site librenms.conf

a2ensite librenms.conf
a2enmod rewrite
systemctl restart apache2

SNMP

cp /opt/librenms/snmpd.conf.example /etc/snmp/snmpd.conf
vi /etc/snmp/snmpd.conf

curl -o /usr/bin/distro https://raw.githubusercontent.com/librenms/librenms-agent/master/snmp/distro
chmod +x /usr/bin/distro
systemctl restart snmpd

Crontab

cp /opt/librenms/librenms.nonroot.cron /etc/cron.d/librenms

Logrotate

cp /opt/librenms/misc/librenms.logrotate /etc/logrotate.d/librenms

Configure Web

http://host211.planet/install.php

Fix Permission

chown librenms:librenms /opt/librenms/config.php