Lessons in CentOS
How to set-up hotspot.
Firefox URL: http://detectportal.firefox.com/success.txt
Google Chrome URL: connectivitycheck.gstatic.com/generate_204
Internet Explorer URL:
Chomium URL: chrome.google.com
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 vgs 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.
CentOS minimal install can be stripped down to a more bare minimum.
Whether you are using CentOS for a build server or simply testing out a new configuration, you can quickly create a VM (virtual machine) that is under 1GB. You can do this without downloading any s…
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