Fleet Manager Q & A

Introduction

These Fleet Manager questions have arisen directly from the experiences that our support team has had working with our customers.

Note: Most of the questions revolve around the maximum amount of messages Fleet Manager can process (peak load capacity). If a Fleet Manager hits these peak loads there will be some delay in importing messages  — though it will catch up when loads decrease. In the current release of Fleet Manager the interface can slow down and show connection errors — however importing records is not affected and the interface will “recover” when loads decrease (and the backend catches up).

We are working on improving the interface performance at peak loads — but we chose to focus on message loading first (as it is the most important).

When should I add Iguana servers? [top]

  • Question: When is the best time to add Iguana servers to Fleet Manager?
  • Background: Adding new servers places a heavy load on Fleet Manager and can cause the interface to become slow or temporarily unresponsive. So we need to manage this process to minimize disruption to monitoring.
  • Answer: The best time to add Iguana servers is during off-peak times when the message load is lowest and monitoring requirements are minimal. In general this would probably be overnight in the early morning hours.

    Note: Iguana servers with smaller log history will load more quickly and cause less disruption. So you may be happy loading a new server with “only” 5-10GB of logs during normal hours, as it will catch up quite quickly — in around 10-20 minutes.

When you add an Iguana server all it’s historical logs are rapidly imported to Fleet Manager. This causes a heavy load which can cause the Fleet Manager interface to become temporarily unresponsive. Fleet Manager can handle about 50-100GB/hour of messages — so importing 100GB of logs can take several hours. Therefore it is a good idea to add servers during non-peak times when the least number off messages are being processed (by currently monitored channels). It is also a good idea to choose times when the Fleet Manager is least likely to be used (by people) for monitoring purposes.

Can I add multiple Iguana servers at the same time? [top]

  • Question: Is it okay to add multiple Iguana servers to Fleet Manager at the same time?
  • Background: This depends on the total size of the historical logs to be imported — rather than the number of servers.
  • Answer: You can add one or more servers with a total of about 50-100GB of historical logs — if you are doing it at off-peak times.

    Note: If you are loading a server with smaller logs of “only” 5-10GB of logs you may be happy adding it during normal hours, as it will catch up quite quickly (in around 10-20 minutes).

When you add an Iguana server all it’s historical logs are rapidly imported to Fleet Manager. This causes a heavy load which can cause the Fleet Manager interface to become temporarily unresponsive. Fleet Manager can handle about 50-100GB/hour of messages — so importing 100GB of logs can take several hours. Servers with 50GB or more should probably be added separately — and also at off-peak times.

What is the peak message load for Fleet Manager? [top]

  • Question: What is the peak message load recommended for Fleet Manager?
  • Answer: Fleet Manager can handle a peak load of about 50-100GB/hour of messages, depending on the hardware used and the network capacity.

It is difficult to give exact peak loads for Fleet Manager, as capacity will vary depending on hardware, network etc. When Fleet Manager hits peak loads the interface will become (intermittently) unresponsive and can show Iguana server connection errors.

How do I know if Fleet Manager is hitting peak capacity? [top]

  • Question: “a peak load of about 50-100GB/hour” is not exact — how can I tell when Fleet Manager is hitting peak capacity?
  • Background: It is difficult to give exact loads at which Fleet Manager will begin to slow down, as capacity will vary depending on hardware, network etc.
  • Answers:
    • If hardware is the bottleneck then Fleet Manager interface performance starts to become (intermittently) slow/unresponsive, and can show Iguana server connection errors.
    • If the network is the bottleneck then Fleet Manager interface performance will remain responsive — but Fleet Manager will be (intermittently) unable to keep up with importing all the messages from attached Iguana servers.

How can I increase the peak message load capacity? [top]

  • Question: The peak message load for our Fleet Manager is insufficient — how can I increase it?
  • Background: Fleet Manager can handle a peak load of about 50-100GB/hour of messages, depending on the hardware used and the network capacity.
  • Answers:
    • You may need to upgrade hardware or split monitoring over multiple Fleet Manager servers.
    • If Fleet Manager is not keeping up with importing all the records from attached Iguana servers — you may need to upgrade the network capacity.

      Note: The peak message loads that Fleet Manager can handle are high enough to handle most installations without performance issues. For example you could monitor about 20-30 Iguana servers processing high message loads of about 50GB per day.

It is difficult to give exact loads at which Fleet Manager will begin to slow down, as capacity will vary depending on hardware, network etc. When Fleet Manager hits peak loads the interface will become (intermittently) unresponsive and can show Iguana server connection errors. If this occurs you can look at upgrading the server hardware, or splitting your monitoring across multiple Fleet Manager servers.

It is also possible to overload the network capacity. In this case the Fleet Manager interface will (usually) remain responsive but you will start to see a time delay when loading messages (i.e., the latest messages in Fleet Manager will be older than in the attached Iguana servers). If this occurs you should look at upgrading the network capacity — or splitting the load onto multiple servers that use independent network connections (hence increasing the network capacity). You will need to speak to your network/system administrator about increasing network capacity.

Should I purge Iguana log messages before adding Iguana to Fleet Manager? [top]

  • Question: If purge the Iguana logs before adding it to Fleet Manager then it will load faster — is this a good idea?
  • Background:
  • Answers:
    • If you already have an archiving system setup for the Iguana that you wish to import then purging records can make sense. However be aware that it depends on the size/amount of the historical logs, for example reduction from 100GB to 20GB will substantially reduce initial load time, but a smaller reduction from 20GB to 15GB is probably not worth the effort.
    • If you wish to use the Fleet Manager as the history/archive for your message logs then you should not purge records. This method of archiving may be worth considering as Fleet Manager uses the PostgreSQL database to store message logs — which some users may prefer to backing up the Iguana logs.

      Note: Using Fleet Manager for archiving message logs has the advantage that you can use the enterprise level backup tools built into PosgreSQL.

      If you have any further questions about this please contact us at support@interfaceware.com.

 

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