Maria Connection Errors Test

Sometimes, errors may be detected when connections to the Maria Database server are established. These errors when left unnoticed may causes severe performance bottleneck on the database server. For an improved and enhanced performance of the database server, it is necessary for the administrators to capture errors on the database server and rectify them as soon as they are detected. The Maria Connection Errors helps administrators in this regard!

This test reports the number of hosts connected to the target database server, the various types of errors encountered by the database server. Using this test, administrators can also figure out the percentage of connection errors encountered by the database server.

Target of the test : A Maria Database server

Agent deploying the test : An internal agent

Outputs of the test : One set of results for the Maria Database server being monitored.

Configurable parameters for the test
Parameter	Description
Test Period	How often should the test be executed.
Host	The IP address of the Maria Database server.
Port	The port on which the server is listening.
Database	Specify the name of the database that is to be monitored on the target Maria Database server
User and Password	The eG agent has to be configured with the credentials of a user who has server-wide PROCESS and SELECT privileges on the monitored Maria Database server. To know how to create such a user, refer to Configuring the eG Agent with Access Privileges section.
Confirm Password	Confirm the password by retyping it here.
SSL	This indicates that the eG agent will communicate with the Maria Database via HTTPS or not. By default, this flag is set to No, as the target Maria database is not SSL-enabled by default. If the target database is SSL-enabled, then set this flag to Yes.
Verify CA	If the eG agent is required to establish an encrypted connection with the target Maria Database server by authenticating the server's identity through verifying the server CA certificate, set Verify CA flag to Yes. By default, this flag is set to No.
Detailed Diagnosis	To make diagnosis more efficient and accurate, the eG Enterprise embeds an optional detailed diagnostic capability. With this capability, the eG agents can be configured to run detailed, more elaborate tests as and when specific problems are detected. To enable the detailed diagnosis capability of this test for a particular server, choose the On option. To disable the capability, click on the Off option. The option to selectively enable/disable the detailed diagnosis capability will be available only if the following conditions are fulfilled: The eG manager license should allow the detailed diagnosis capability Both the normal and abnormal frequencies configured for the detailed diagnosis measures should not be 0.

Measurements made by the test
Measurement	Description	Measurement Unit	Interpretation
Connected hosts	Indicates the number of hosts that are connected to the database server.	Number
Connection errors	Indicates the number of times protocol handshake errors were encountered when hosts were being validated for a connection to the database server.	Number	A high value may indicate network connectivity issues with the database server. The detailed diagnosis shows the IP, Host and first seen, last seen, error seen values for a host that faces connection problem with server
Maximum connection errors	Indicates the maximum number of times the connections from a host failed and beyond which the host is blocked from contacting the database server.	Number
Percentage of connection errors	Indicates the percentage of connection errors that occurred on the database server.	Percentage	If this value is high or close to 100, then hosts may not be able to connect to the database server.
Host blocked connection errors	Indicates the number of connections that were blocked due to the connections exceeding the Maximum connection errors.	Number
Transient errors	Indicates the number of transient erorrs that occurred during IP to host DNS lookups.	Number
Permanent errors	Indicates the number of permanent errors that occurred during IP to host DNS lookups.	Number
Host name format errors	Indicates the number of hostname format errors.	Number
Reverse lookup DNS errors	Indicates the number of errors that occurred during DNS reverse lookups.	Number
Host not privileged errors	Indicates the number of errors that were captured due to the users from the host are not permitted to login.	Number
Authentication errors	Indicates the number of errors that were captured due to authentication failures.	Number	Authentication failures generally occur when incorrect username or password is provided to connect to the database server. The detailed diagnosis of this measure lists the IP, Host and first seen, last seen, error seen values.
Authentication plug-in errors	Indicates the number of errors that were reported by an authentication plugin.	Number
Handshake errors	Indicates the number of errors that were detected at the wire protocol level.	Number
Proxy users errors	Indicates the errors that occurred when a proxy user of a user that does not exists tries logging in.	Number
Max user authentication errors	Indicates the maximum number of times authentication errors were detected for a user after the quota of that user exceeded the tries.	Number
Default database errors	Indicates the number of errors that occurred due to the user not having required permission to access the default database.	Number
Local errors	Indicates the number of local server errors such as out-of-memory errors, unrelated to network, authentication, or authorization errors detected.	Number