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Online Airline Management Simulation
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Author Topic: Server downtime expected shortly [completed!]  (Read 1249 times)

Offline Sami

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Server downtime expected shortly [completed!]
« on: July 04, 2009, 10:01:06 PM »
Some users may have noticed occasional issues with the game world 'clock' lately, mainly in the 'Air Travel Boom' game. The in-game timer/clock has stopped about 3-4 times during the last month, every 5 days or so, for about an hour or two until administration has come online to reset the calculation.

We have been tracing the issue and have found that the probable cause for this is a bug in the server core software (ie. the server 'operating system') that causes a memory leak and thus a system halt after a certain period of uptime. After some further investigation it has become apparent that there is no single simple patch for this issue so instead we have elected to change the core software of the server to another brand that is also used on our other servers. This AirwaySim server is using the older / other software as it was commissioned 1,5 years ago and since then we have changed to another core software in the new servers (used in other projects).

So we'll be updating also this server's core software to the new status. This however is a complete re-installation of the system and it will take a few days all-in-all. We will be moving the whole AirwaySim service to another server so that the website and simulation worlds will stay open, and at the same time we can work on configuring this current server with the new software.

We will proceed with the update works immediately during the upcoming days. This may cause occasional downtime to our services but they shouldn't be longer than 30 minutes each.

Unfortunately this extra work means also less time available to code the AirwaySim's new features and prepare for the needed changes for the next game worlds so in other words this probably means a slight delay for the start of the new worlds. But the software update being done is necessary in order to maintain a high level of uptime on our servers.
« Last Edit: July 05, 2009, 07:53:02 PM by sami »

Offline Sami

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Re: Server downtime expected shortly
« Reply #1 on: July 05, 2009, 12:02:44 PM »

We are now running on the secondary / temporary server... All systems should be normal and run normally also here but occasional problems may occur. We'll proceed now with the installation of the previous machine to get it back online as soon as possible.

Offline Sami

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Re: Server downtime expected shortly
« Reply #2 on: July 05, 2009, 07:52:54 PM »

The maintenance is now completed, the installation procedure was faster than we expected so we moved all services back to the original server already now!

There may still be some minor tweaking needed which may cause the server to be unavailable for 1-2 minutes max for each change needed but this is unlikely.

Offline Sami

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Re: Server downtime expected shortly [completed!]
« Reply #3 on: July 11, 2009, 11:55:01 AM »

We made some final adjustements and changes to the server today.

This included also changing some character encoding settings so please let me know if you have problems with for example airport names with special characters, such as and  (try looking up airports from Finland or Sweden ...).

Changes included also updates to the game sources to make the different versions more controllable .. or to avoid mixing them.
« Last Edit: July 11, 2009, 11:57:43 AM by sami »

 

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