Linux – Page 3

How to translate SNMP MIB to OID

In this article, I will show an example of how to translate SNMP MIB to OID.

Installing Asterisk from source

In this article, I will give an example of installing Asterisk from source code, for example, I needed it to install a new version of Asterisk on Ubuntu Server 22.04, since Asterisk 18 was installed from the default repository, and there were no modules I needed by default, such as Voicemail.

ABillS. Service status change script for tariffs with daily charge

Since in the ABillS bilingual system on tariffs with daily accrual, when the user has no money in the account, the status of the service does not automatically change to Too little deposit, and the customers are driven into a negative balance and then only turned off, I had to make a script from a SQL query and add it to Cron, as there were often cases when users complained that they were driven into a minus.

How to reserve accel-ppp (balancing)

In this article, I will give an example of balancing users on several accel-ppp servers, or in other words, this can also be called redundant accel-ppp servers.

SSH root connection in Ubuntu

Once I needed to use rsync to copy a lot of data from the server to which only the root user had access, so I allowed the root user to connect via ssh.

Solution BUG: Bad page state in process kworker

Once I assembled a new access server with Accel-ppp and Intel XL710 network adapters, and after putting it into operation, I noticed that all processor cores are used evenly, and the tenth core is used almost 100%, and I also noticed messages in the logs:

How to set up iBGP in Bird

For example, I will configure the internal BGP protocol in Bird, in my case iBGP was needed in order to transfer user routes from several access servers to a NAT server. As access servers, I configured Accel-ppp (ipoe) and JuniperMX, they all worked simultaneously and balanced users by making an artificial DHCPOFFER delay.

Category Archives: Linux