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18
votes
6answers
5k views

Bidirectional real-time sync of large file tree between two distant linux servers

By large file tree I mean about 200k files, and growing all the time. A relatively small number of files are being changed in any given hour though. By bidirectional I mean that changes may occur on ...
10
votes
5answers
6k views

Rsync : copying over timestamps only

Currently I have two directories A/ and B/ which are identical in every respect, with the exception of the timestamps. Therefore if I run the command : rsync --dry-run -crvv A/ B/ then all files ...
10
votes
4answers
5k views

Is execution of sync(8) still required before shutting down linux?

I still see people recommend use of "sync; sync; sync; sleep 30; halt" incantations when talking about shutting down or rebooting Linux. I've been running Linux since its inception and although this ...
9
votes
4answers
3k views

Synchronizing very large folder structures

We have a folder structure on our intranet which contains around 800,000 files divvied up into around 4,000 folders. We need to synchronize this to a small cluster of machines in our DMZs. The depth ...
5
votes
5answers
526 views

Do you know of an online back up & sync solution for Windows that actually works?

I've been looking for some time for a program that backups your data to the cloud and is also able to sync 2 or more computers. By syncing I mean, if I change something on one computer that it should ...
5
votes
4answers
275 views

Copying/syncing email from a live server over network

The scenario is as follows: Copying and then syncing from a live mail server via network(only) to another server. The mail server is live meaning that lots of files (mails) are being altered, ...
5
votes
2answers
1k views

csync2 ERROR: Connection to remote host failed

I was unable to find any articles to answer this question, so my best bet was to post this here: Scenario We have 2x application servers in production hosting a PHP website and I would like some ...
4
votes
2answers
676 views

syncing local folders

What is a best way to keep in sync two local folders ? I know I can use rsync -Ra but I need to keep in sync all the time. Is it possible to make rsync sit in background and constantly sync local ...
3
votes
3answers
253 views

How to keep the time on multiple servers in sync

I want a cluster of servers to have the exact same time. All are using UTC time zone. Using NTP currently, i still see they seem to be off by 10-20 miliseconds each. Whats the best way to have them ...
3
votes
1answer
978 views

Is it really necessary to call /bin/sync twice before an unmanaged power-off?

My company sells an "embedded device" which is implemented as a headless Linux box with ext4 on an internal SSD. Some of our users have a habit of doing a "save current settings" on this box, and ...
3
votes
2answers
304 views

How can I test apt-get updates on a test box before deploying to production?

I would like to schedule updates on my ubuntu servers, but would like to test the updates first on a test server. I'd like to run all updates on the test box at the beginning of a development cycle, ...
3
votes
1answer
350 views

Need to make all the timestamps on local files match their corresponding ftp hosted file's timestamp

I screwed up and downloaded ~10GB worth of files from my offsite backup location (ftp server) without checking the 'preserve timestamp' option in the client. The PC with the local files is a netbook ...
3
votes
1answer
266 views

Linux bidirectional file sync over a WAN with immediate/incremental syncing

Does anyone know of a solution that lets you sync files bidirectionally over a WAN, but also syncs immediately/incrementally? Basically Unison is perfect for the file syncing, but it doesn't sync ...
3
votes
1answer
1k views

MacOS X 10.6 Portable Home Directory sync fails due to FileSync agent crashing

On one of our cleanly installed MacPro machines running MacOS X 10.6.6 connected to our MacOS X 10.6.6 Server, syncing data using Portable Home Directories fails. It seems to be due to the filesync ...
3
votes
1answer
2k views

SQL Server 2008 Replication & Sync Framework - Practical Limits

We are looking at hosting our client's data on our own system and using the MS Sync Framework to replicate data with a SQL Server instance on each client's site. Each client might have on average ...
2
votes
4answers
386 views

Best server sync software/methods [closed]

I have a test server at home and a test server at the office. I'd like to somehow sync multiple folders in both directions automatically so I can work at home and to also provide an offsite backup. ...
2
votes
6answers
2k views

Standalone tool to synchronize two folders in windows?

I keep data on a USB drive, but I also keep a copy of all of that data on a hard disk. I like using the hard disk because it's faster and gives me a backup. What standalone tools would work to keep ...
2
votes
2answers
351 views

Compare & Copy missing files from identical directory on Remote Server

I have a development server on which I want to keep certain data directories in sync with the live server. Any files in these directories which exist on the live server, but not on the dev server, I ...
2
votes
3answers
2k views

TracError: Repository not found

I'm getting that error when trying to execute trac-admin /path/to/trac repository resync /path/to/svnroot/repo1 Both paths exist. I'm trying to use Trac 0.12 with several svn repositories. I could ...
2
votes
3answers
536 views

Unified Authentication between Windows AD and Linux LDAP Server

Does anyone know of a solution that would allow me to do user account synchronization between Windows Active Directory and an LDAP Server hosted on a Linux Server? I'm currently looking at FreeIPA ...
2
votes
1answer
558 views

Constantly having to net stop start dnscache after adding new entries in dns

Occasionally I must add new DNS entries in AD DNS. The zone is the domain's zone, and the server which I use to add it is in the same subnet as the clients affected by this issue. After adding the ...
2
votes
2answers
1k views

How does one make sure or even guarantee server time are sync correctly between dozens of servers across multiple datacenter on different location?

Currently our web applications contain a logic to check if the data sent to the web server is expired or not by comparing the timestamp of the data with the date/time of the server. Everything goes ...
2
votes
3answers
430 views

iPhone Exchange Calandar Sync Issues

I am having problems setting up OTA sync of exchange calendars with a users iPhone at work. I set up her exchange account on the iPhone. Have it set to push. Contacts and Email loads up pretty much ...
2
votes
1answer
180 views

Is there a global config file for Unison synchronization tool?

I'd like all my unison profiles to have merge = Name * -> meld CURRENT1 CURRENT2 diff = /usr/bin/meld CURRENT1 CURRENT2 confirmmerge = true as options. I know I can add these options to each ...
2
votes
2answers
305 views

Robocopy with local catalog of remote data for incremental backup

I am currently using robocopy to an extremely slow destination. The compare between source and destination files can take a while to run through. Since the destination will never change (apart from ...
2
votes
2answers
385 views

Watching for Unison errors

We've implemented a folder sync across two servers sitting in two different data centres using Unison. It's crucial for us that this folder sync work as expected as our SLAs depend on the data being ...
2
votes
2answers
227 views

File-sync server software

We are currently using Dropbox in the company and running out of space lately. I'm wondering if there any similar software that we could use on our own server? I've looked at pogoplug, but I'd like ...
2
votes
1answer
6k views

Problems setting NTP sever with w32tm for a DC that is a Hyper-V guest

I have tried to sett my DC to get its time from several NTP severs. I follow this answer ...
2
votes
1answer
303 views

NTP: ntpdate to sync time between the cp's on private network

I have two systems One acts as Primary/Active and has Internet connection and gets time from NTP server. The second system is Secondary/Passive and has no connection to the external world. Primary ...
2
votes
2answers
862 views

Debian Server Daemon: File sync

I'm looking for a way to (auto) sync files on some pcs over the internet and save/backup them on my server. Just like Dropbox and other services like that. I found iFolder (by Novell), but it's not ...
2
votes
1answer
125 views

Maintain EBS data in sync

I'm here again! On my last questions here I was wondering how to sync data on EBS. Ok. I've tested in first time the NFS, but everything goes extremely SLOW! And its a shared volume, if the master ...
2
votes
0answers
952 views

HT Link Sync Error after Ubuntu 10.04 LTS Installation

Update 1 I just assembled an exact replica of this server, and successfully installed Ubuntu 10.04 LTS in a RAID10 configuration. The success was confirmed by a login to the initial account. There ...
2
votes
1answer
116 views

Better folder structure for 1-6mil files?

I'm doing a bit of development work for a start up, and have been asked to work on the directory structure for all the content being served and the scalability of the host servers(load balancing, ...
1
vote
4answers
756 views

How to maintain local Sync of files to multiple computers

I have the requirement to sync files (documents mostly, sound bites, high quality images) between multiple PCs, Macs and Linux clients and servers. The number of files is large and delta syncs would ...
1
vote
3answers
229 views

Subversion bidirectional commit and sync

i have a subversion 1.6, it has one repo and mirrored repo. The mirrored repo is read only ofcourse. is there a way to commit and sync between these repos in both directions ?
1
vote
5answers
1k views

database sync across servers in SQL 2008R2

as we are in the process of expanding of businees, now we are stepping a ahead to add few more datacenter, now we have a requirement where we need to sync the production database with other ...
1
vote
3answers
363 views

Unix timestamp deviation

I have two Ubuntu servers which synchronize their timestamp to europe.pool.ntp.org every night. Just before they sync, I can see a difference of 4 seconds between the two servers. One of the servers ...
1
vote
3answers
723 views

Perl: How to sync files with ftp server

I'm looking for a way to sync a local folder with a remote folder that is only accessible with FTP. Is this possible in Perl or is it possible by calling a System-command in Perl ? I'm in a Windows ...
1
vote
1answer
2k views

Synchronizing local mysql database with remote one with a script or automatically? [closed]

Is there a way to sync a MySQL database with a remote one either automatically or with a script? The data is not time sensitive, but I don't want to have to export it out of the local database and ...
1
vote
2answers
986 views

Synchronizing files between Linux servers, through FTP

I have the following configuration of servers: 1 central linux server, a VPS 8 satellite linux servers, "crappy shared hostings" I have a bunch of files that I need to have in all servers. ...
1
vote
1answer
297 views

Can't sync filesystem without reboot

I'm having an issue with a linux server. Once a week the running mysql instance hangs and there is no way to fully stop it. If I kill it, it remains in zombie status and init does not reap its pid. ...
1
vote
3answers
968 views

Sync files and folders in windows with commands

I am a Linux user. I am looking for a command line tool for Widows(2008 R2) for files & folders synchronization. I am looking for a tool like rsync in Linux. I have to synchronize between two ...
1
vote
2answers
384 views

iPhone calendar sync with Exchange 2010

I have an iPhone user that just recently noticed that his iPhone calendar changes are now overwriting any changes made in Outlook. I checked and didn't see any config settings on the iPhone for ...
1
vote
2answers
308 views

sync a directory between OSX and Ubuntu

I need a good way to sync a directory between my OSX 10.6 laptop and my Ubuntu Desktop. Dropbox would obviously be a great choice, however the directory I need to sync is owned by root on both ...
1
vote
2answers
2k views

SQL Server 'Real Time' Mirroring Possible?

We have a SQL Server that has important databases for our clients, if the server goes down we want another server to be ready to be switched over (we would just change the IP). The question is, how ...
1
vote
6answers
21k views

How to setup workstation “My Documents” to sync to DOMAIN on each logon/off

Me and a couple buddies started up a small business and we have a Domain + 5 workstation set up. A prof. IT guy helped me set it up a while back. Basics that I know of: 1)We have a K:\ main network ...
1
vote
1answer
26 views

Sync GApps users to LDAP (or just passwd file)

Do you know any way to sync users from GApps to LDAP? Or, maybe, is there any tool to sync GApps users with passwd file? I know, that Google has tool to sync users from LDAP to GApps... Why I need ...
1
vote
1answer
92 views

LSI Raid 5 with 2 disks “not synced”

I have a system with a LSI 1064e SAS raid. The system is not booting, and when I enter the raid configuration utility, It says, that has 2 disc "Not synced". I didn't find the option to resync them, ...
1
vote
1answer
65 views

Azure SQL Data Sync between SQL Azure and Azure VM

I used two have 2 SQL Azure databases and they were automatically synced using this service: http://www.windowsazure.com/en-us/documentation/articles/sql-database-get-started-sql-data-sync/ Now one ...
1
vote
2answers
4k views

TCP connection stuck in SYN_RECV state despite ACK received, Linux 2.6.18, embedded, ARM

My client cannot connect to my protocol port (TCP) after some network glitches, even though all other protocols (telnet/HTTP/FTP) work fine. netstat shows that my server is listening and tcpdump on ...