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For some quite time, I have been visiting Packt to get a new eBook each day. Books are related to IT in the cookbook way. You can download them as PDF, ePub or Mobi format. I always download the ePub format and upload it into Google Books.


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These days, VoIP is very complex. It is hard for some people to make a difference where some elements start their role and when others end it. This is the case of provisioning; provisioning is the fact of letting the SIP Endpoints to pull the needed information (SIP credentials, contacts, buttons actions and more).

Usually, an IP telephone tries to pull the information using a file storage protocol like FTP, TFTP or HTTP. HTTP (or HTTPS) is the most common. I will talk about it because FusionPBX supports it out of the box, however, you are free to use whatever you want. This call depends on your IP phone brand.


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This is one of the most common issues that could carry issues if you have a MariaDB Galera Cluster. After restarting the cluster, the nodes are not joining. If you look into your log, you may find a line like this:

It may not be safe to bootstrap the cluster from this node. It was not the last one to leave the cluster and may not contain all the updates. To force cluster bootstrap with this node, edit the grastate.dat file manually and set safe_to_bootstrap to 1.

Continue reading, here there are some steps I did to recover mine.