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Displaying posts with tag: iptables (reset)

Connection Failures Between Nodes in MySQL Cluster
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If you're setting up MySQL Cluster on Oracle Linux or another Linux such as Red Hat, CentOS or Fedora, you might have come across some problems getting the nodes to communicate. There are two ways you might bump into problems with network connectivity: The iptables firewall, and SELinux. These security mechanisms might prevent your various nodes—management, data, and API—from communicating with each other in various ways and with various symptoms.

Let's have a look at what you're likely to see. 

Data nodes stuck at "starting"

The first thing you might notice is that your data nodes get stuck in the "starting" state. …

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Asterisk attack
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There was a lot of talk about this being the next menace after email spam. I’m not actually sure what it’s called for VoIP systems, but my Asterisk setup has started to be attacked over the last few days. Lots of entries like: [Aug 27 19:20:30] NOTICE[18826] chan_sip.c: Registration from '"742"<sip:742@a.b.c.d>' failed for '208.109.86.187' - [...]

Log Buffer #182, a Carnival of the Vanities for DBAs
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This is the 182nd edition of Log Buffer, the weekly review of database blogs. Make sure to read the whole edition so you do not miss where to submit your SQL limerick!

This week started out with me posting about International Women’s Day, and has me personally attending Confoo (Montreal) which is an excellent conference I hope to return to next year. I learned a lot from confoo, especially the …

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Showing entries 1 to 3

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