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Add Preferred Hostname Troubleshooting steps (#1773)
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@ -75,3 +75,32 @@ logged in the `Azure/acs-engine repo on GitHub <https://github.com/Azure/acs-eng
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This is apparently fixed in Kubernetes v1.7.2 which include a new disk driver,
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This is apparently fixed in Kubernetes v1.7.2 which include a new disk driver,
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but is yet to tested by us.
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but is yet to tested by us.
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5. MongoDB Monitoring Agent throws a dial error while connecting to MongoDB
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---------------------------------------------------------------------------
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You might see something similar to this in the MongoDB Monitoring Agent logs:
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.. code:: bash
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Failure dialing host without auth. Err: `no reachable servers`
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at monitoring-agent/components/dialing.go:278
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at monitoring-agent/components/dialing.go:116
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at monitoring-agent/components/dialing.go:213
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at src/runtime/asm_amd64.s:2086
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The first thing to check is if the networking is set up correctly. You can use
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the (maybe using the `toolbox` container).
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If everything looks fine, it might be a problem with the ``Preferred
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Hostnames`` setting in MongoDB Cloud Manager. If you do need to change the
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regular expression, ensure that it is correct and saved properly (maybe try
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refreshing the MongoDB Cloud Manager web page to see if the setting sticks).
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Once you update the regular expression, you will need to remove the deployment
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and add it again for the Monitoring Agent to discover and connect to the
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MongoDB instance correctly.
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More information about this configuration is provided in
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:doc:`this document <cloud-manager>`.
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