Observium disk full

If your graphs are showing with ‘graph error’ and your disk is almost full, please follow the instructions below.

Add extra disk to your VM or to your machine and type following commands with root privileges.

# display disk name
fdisk -l

# create partition
fdisk /dev/sdb

# type n enter enter enter enter w enter
# means new partition, default values accept, and write out changes

# extend physical volume group
vgextend observium-vg /dev/sdb1

# extend size in volume group and resize file system
lvextend -L +19G /dev/mapper/observium--vg-root
resize2fs /dev/mapper/observium--vg-root

# check everything is ok
df -k

# now regenerate graphs that were missing
cd /opt/observium
php discovery.php -h all
php poller.php -h all

Above assumes you are adding a second disk of 20 GB. sdb and +19G might need to change if your configuration is different.

Mint upgrading from 18.3 to 19 – Netbeans broke

Seems netbeans cannot work with OpenJDK 10/11 and stops silently shortly after start.


uninstall 8.1 from software list and/or remove manual installation from /usr/local

Install OpenJDK 1.8

Download latest 8.2 from netbeans.org.

Install Netbeans 8.2 in current user (aka path /home/youruser). Also install Glassfish/Tomcat in current user. For some reason, installation in /usr/local does fail.

During installation, point your java jdk to /usr/lib/jvm/openjdk-1.8.

Please note that editing the /etc/netbeans.conf file as indicated by some sites is not resolving the issue.

Mint update from 18.3 to 19 – Wine broke

After updating from Linux Mint 18.3 to 19, wine stopped working. This is what was required to correct.

sudo all below commands if required

dpkg --add-architecture i386
apt-add-repository 'deb https://dl.winehq.org/wine-builds/ubuntu/ bionic main'
wget -nc https://dl.winehq.org/wine-builds/Release.key
apt-key add Release.key

Check if you do not have duplicate lines from an earlier install.

vi /etc/apt/sources.list.d/additional-repositories.list

Then the final step.

apt-get update

apt-get install --install-recommends winehq-stable

Source: Ubuntu – WineHQ Wiki

Unknown media type in type Fix

If Linux Mint 19 (Tara) shows error during update fril 18.3.

Unknown media type in type 'all/all'
Unknown media type in type 'all/allfiles'

To fix run following with sudo user:

cd /usr/share/mime
grep -R all/all *

in kde xml, remove the sections containing:
<mime-type type="all/allfiles">
<mime-type type="all/all">

sudo vi packages/kde.xml

the other files showing these sections can remain untouched.

Then run following, no errors should occur

sudo update-mime-database /usr/share/mime

Source: Unknown media type in type Fix