You are viewing Apigee side documents, see Apigee X paperwork.

You are viewing Apigee side documents, see Apigee X paperwork.

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Enjoy the following video to learn more about solving 500 Internal Server problems.


The client software becomes an HTTP condition laws of 500 with all the content “interior Server mistake” as a reply for API calls. The 500 Internal host error could be caused by a mistake during the delivery of every coverage within sides or by one throughout the target/backend servers.

The HTTP reputation laws 500 are a simple error feedback. This means your host encountered surprise problem that averted they from rewarding the consult. This mistake is generally came back because of the host whenever hardly any other error laws would work.

Mistake Information

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You may get here mistake content:

Sometimes, you may see another error message that has additional information. Let me reveal an example error information:

Feasible Factors

The 500 inner Server Error could be thrown due to a number of different reasons. In advantage, the reasons are categorized into two major kinds considering where in fact the mistake taken place:

Delivery Mistake in a benefit Plan

An insurance policy within the API proxy may fail for whatever reason. This section explains just how to diagnose the issue in the event that 500 inner machine mistake takes place while in the performance of an insurance plan.


Symptomatic Tips for Personal and Market Affect Users

If you possess the trace UI period for any error, then:

  1. Check your mistake was due to the performance of a policy. Discover Determining the foundation associated with difficulties for info.
  2. When the error happened during rules execution, continue.. In the event the error ended up being caused by the backend servers, head to Error for the Backend host.
  3. Find the API request which faltering with 500 interior Server mistake in trace.
  4. Study the consult and select the precise coverage with which has unsuccessful and/or stream known as “mistake” definitely rigtht after the unsuccessful policy from inside the trace.
  5. Find out more information about the mistake either by examining the “error” area in land area or the mistake material.
  6. Utilising the facts you’ve collected regarding mistake, attempt to figure out the influence.

Diagnostic Strategies for Personal Affect Consumers Merely

Without having the trace UI program, after that:

  1. Check the error took place throughout performance of a policy. See identifying the foundation for the difficulties for info.
  2. In the event that mistake got caused by policy delivery, manage. In the event the error took place during policy delivery, continue. When the mistake had been due to the backend host, go to mistake during the Backend Server.
  3. Make use of the Nginx accessibility logs as explained in Deciding the origin regarding the difficulty to look for the failing rules from inside the API proxy and also the unique consult content id
  4. Look into the content Processor logs ( /opt/apigee/var/log/edge-message-processor/logs/system.log ) and search for exclusive demand content id in it.
  5. When you do get the distinctive demand information ID, try to acquire more information regarding the reason when it comes down to problems.


When you yourself have determined the main cause of the condition using the rules, try to ideal the difficulty by fixing the insurance policy and redeploying the proxy.

The next advice express just how to establish the cause and quality for various types of problems.

If you need further help in troubleshooting 500 inner servers mistake or you believe it’s something within sides, get in touch with Apigee service.

Example 1: Failure operating Callout coverage because of one within the backend host

If the phone call to the backend servers fails inside the Service Callout coverage with any error such as for instance 4XX or 5XX, then it are handled as 500 inner machine mistake.

  1. Here is a good example where in actuality the backend services fails with a 404 error within the services Callout rules. The next error message is distributed toward consumer:
  2. These trace UI session demonstrates 500 condition rule caused because of a mistake operating Callout plan:

  • Within instance, the “error” home details the explanation for the Service Callout policy troubles as “ResponseCode 404 is actually handled as error”. This error may occur in the event the source becoming utilized via the backend servers Address inside provider Callout rules is certainly not offered.
  • Check out the availability of the resource throughout the backend machine. It could not be readily available temporarily/permanently or it may have been relocated to a separate place.
  • Instance 1 Resolution

    1. Look into the accessibility to the reference regarding the backend host. It may not available temporarily/permanently or it could have already been gone to live in an alternate area.
    2. Fix the backend servers URL from inside the provider Callout plan to point out a legitimate and existing source.
    3. If site is just temporarily unavailable, then test making the API consult as soon as the reference is present.

    Sample 2: Breakdown in Herb Variables Plan

    Let us now see another sample, where 500 interior host mistake try caused due to an error inside Extract factors rules to discover ideas on how to troubleshoot and fix the challenge.

      The next trace in UI session shows 500 status rule because one in herb factors coverage:

    Choose the weak Extract factors plan, scroll down and look at the “Error material” section for lots more facts:

  • The mistake Content suggests that the”serviceCallout.oamCookieValidationResponse” varying isn’t found in the Extract factors rules. Given that identity from the changeable means, it ought to be keeping the feedback of the preceding provider Callout rules.
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  • Find the provider Callout rules in trace and also you will dsicover the “serviceCallout.oamCookieValidationResponse” diverse had not been arranged. This indicates the label into backend services failed, resulting in a vacant reaction changeable.
  • Although Service Callout coverage enjoys were unsuccessful, the performance associated with plans after provider Callout policy carry on due to the fact “continueOnError” banner within the solution Callout plan is placed to real, as shown below:

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