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watchdogs:logs
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| + | ====== Looking at the logs for key indicators of potential issues | ||
| + | Overall investigation is a difficult task to summarise as there are a variety of things that could be the issue. It is important to maintain a level head and not be overwhelmed. A good method of following for actually solving a problem is 1) Recreate the Problem and verify it is still there 2) Apply your proposed solution and try recreate the problem multiple times. If it does not happen again you can say you've fixed the issue but if it happens again then your solution is not correct and needs to be rethinked and retested. | ||
| + | As regards logs the word Exception is always a good one to look out for....except in the Ticketer (circa Eoin Joy 2017) as some exception are " | ||
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| + | OutOfMemory is a big issue which usually occurs when the JVM heap has gone over what it is allowed, The Perm Size have gone over what it is allowed or Java isn't allow spin up any more threads. There are other causes but if you see this it is a major red flag, needs investigation and of course the App will need to be restarted. | ||
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| + | Some points to check : | ||
| + | * Ensure the logs are moving and are | ||
| + | * Ensure you can still log into the application and they function normally | ||
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| + | Snmp Active Alarm Exceptions may not be serious* - does need to be fixed eventually | ||
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| + | MySql Exceptions can be a big issue | ||
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| + | Trap processing fail over and how to verify: https:// | ||
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| + | It is good to shadow other people on Watchdogs as watchdogs let us know when problems we have encountered before have occurred and some of these problems can be esoteric. A good rule of thumb is that if you don't know what the watchdog email is for, go to the server that sent the alarm, go into the watchdog ResourceConfig.groovy, | ||
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| + | Alarms remember if you think the issue you are investigating is big or possibly could be a larger issue and you cannot fix it, tell other people and ask for help! | ||
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