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- JohnMark
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- #166
TL;DR: The firewall on one of my servers was blocking another one of my servers.
One of my worker nodes in my cluster is having issues communicating with the master node. When my app goes to reach out to Ford's website on the worker node, it is having trouble looking up the website. I identified that there was a problem from some graphs I have...
Yellow good; red bad
I moved all my apps to the working master node while I tried to fix the issue. There were a few spikes while I moved apps back and forth to test the issue, but generally it's flattened out to a normal level.
I identified the issue to be a misconfigured firewall in my server cluster. I felt like an idiot when I saw it! Apparently that node never worked to begin with haha. I only started seeing the issue yesterday when my server balanced some applications to the misconfigured node and so roughly 50% of people had issues.
Two days ago when the issue first started (app was balanced to another server node):
All good now
One of my worker nodes in my cluster is having issues communicating with the master node. When my app goes to reach out to Ford's website on the worker node, it is having trouble looking up the website. I identified that there was a problem from some graphs I have...
Yellow good; red bad
I moved all my apps to the working master node while I tried to fix the issue. There were a few spikes while I moved apps back and forth to test the issue, but generally it's flattened out to a normal level.
I identified the issue to be a misconfigured firewall in my server cluster. I felt like an idiot when I saw it! Apparently that node never worked to begin with haha. I only started seeing the issue yesterday when my server balanced some applications to the misconfigured node and so roughly 50% of people had issues.
Two days ago when the issue first started (app was balanced to another server node):
All good now
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