konung's questions

A bit of background

• We have a Windows 2008 server that users use to store all kinds of data.

• It has smb share to a specific folder, that needs to be accessed by several Ubunutu servers via cifs.

• It worked all great until recently we had to patch Windows server against WannaCry attack.
• Also updated Ubuntu servers ( running Ubuntu 16.04.02 LTS)
• Except for updates nothing changed - all the configuration is the same, and worked great for several years.
• No changes on the network

Problem:

Now samba share on Windows 2008 server times out after a few minutes ( about 10), if clients don't access it. (Normally it it happens once every few hours, when either an import or an export needs to be pulled from share or saved to it). To be clear - the share mounts on Ubuntu clients and works as expected, it just times out after a few minutes if no process uses that connection.

Temporary solution: we setup cron tasks, that touch a file on the windows share every 5 minutes to keep connection alive) . - THIS DOESN"T HELP

Ended up setting up a cron task with a sudo user running mount -a every 5 minutes.

I would like to find out a reason for this and come up with a long term solution.

EDIT:

Per comments:

My mount command in /etc/fstab ( replaced sensitive info with caps)

//SERVER.HOST.NAME/apidata /var/www/pai3/shared/data/production/k_drive/data cifs username=USER,password=PASS,iocharset=utf8,sec=ntlm,workgroup=DOMAIN.COM,rw,uid=1000   0  0

A bit of background.

We run a small in house data center: about 20 virtualized servers (Debian Lenny, Windows 2003, Windows xp and Windows 7 machines), in a Citrix Xen pool running on 3 host servers and a SAN, plus a few standalone machines running legacy or specialized software that can't be vritualized.

There is a big push everywhere now to move to cloud so we considering Ubuntu Cloud.

I was wondering what are the pros / cons of running virtualized pool vs cloud to run all those machines?

Thank you

This may be a stupid question but you never know with proprietary equipment.

We trying to build an internal development Ubuntu Cloud and looking for cheap hardware to use. It looks like there are some cheap refurbished Cisco MCS 7845 I2 K9 servers on ebay. If we get them can they be repurposed and loaded with Ubuntu 10.4? According to the specs on the Cisco site, it's just a server, I don't see any proprietary hardware on it, but I might be wrong.

So did anyone have any experience with a situation like this?

Thank you

We just had a summer daylight change in US. and pc's on my network are behaving strange, some of them change time and some didn't.

My network: 2 locations both in Midwest, same time zone. Location 1: 120 pcs (windows xp & windows 200) , with 1 Active Direcotry Domain Controller on Windows 2003 Standard. A couple of windows 2000 servers (they up to date) the rest of the servers are Xen or Debian machines (all up to date) , Second location connected through OpenVPN link all pc's are running fine - but they are all connecting to our AD domain controller. Locaiton 2: 10 pcs, and a shared LAN NAS. Both of the routers/firewalls in both locations are pFsense boxes with ntp service running - but it's up to date.

Tried all the usual suspects:

• I have all the latest updates installed
• restarted them
• domain controller is running fine
• most computers are running fine
• I have only one domain controller on my network
• also my firewall serves as ntp server (pfsense) but it's up to date.
• all of the linux machines are fine since they are querying firewall / router for the time.

about 1/3 of my pcs are 1 hour behind. If I change them manually they just change back ( the way domain pc's are supposed to).

I've tried everything but I can't think of anything else to try.