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VMware ESXi: howto remove the last snapshot

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Sometimes we need to create a snapshot in VMware ESXi (e.g. for backup purposes) and delete it right afterwards. This kind of operations are usually performed with shell scripts. In this post, I will explain how to remove the last snapshot using the command line.

You can specify the snapshot you want to . . . → Read More: VMware ESXi: howto remove the last snapshot

VMware ESXi: howto wait for commands to complete (e.g. create snapshot)

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In VMware ESXi, you have blocking and non-blocking tasks. When creating scripts to execute non-blocking tasks, it may be useful to wait for non-blocking commands to complete. This can be done by looking to the task list in the command line.

As an example, I used one of the harmless tasks in VMware: . . . → Read More: VMware ESXi: howto wait for commands to complete (e.g. create snapshot)

PPPoE in a multiple-connection Linux firewall

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I had to configure a PPPoE interface as a secondary Internet connection in a Linux firewall, using the CentOS Linux distribution. The idea was to route HTTP and HTTPS traffic through the PPPoE connection to leverage the bandwidth usage of the primary static-IP connection.

There are some things to consider when the PPPoE . . . → Read More: PPPoE in a multiple-connection Linux firewall

Firewall Builder with multiple ISP connections howto

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I’ve been using Firewall Builder to manage Linux (CentOS) firewalls for a while. It’s an excellent tool for middle-sized organizations.

I was a happy sysadmin with my single-ISP fwbuilder configuration. Everything was simple, everything worked out of the box. One day, a PPPoE connection came by. I thought there was a simple solution . . . → Read More: Firewall Builder with multiple ISP connections howto