No HW Raid - FreeBSD Gmirror (soft-raid1) As Best Practice For Data Integrity?
Jul 30, 2006
Dedicated server has 2 HDD but I am not going to pay another $25/month for the hardware RAID solution (already stretched too far).
My plan is to install FreeBSD 6 and use Gmirror to establish a raid-1 "soft" mirror.
Advantages: Entire drive is mirrored including the OS. Drives can be remotely inserted or removed from the mirror set using a console command so its possible to uncouple the mirror and perform software updates on a single drive then re-establish the mirror only after the updates have proved successful.
Disadvantages: Lower I/O than hardware solution (not a problem for me) others???
I rarely see people consider software raid for a tight-budget server and I am wondering why? Could it be that other OS's dont have a solution as good as gmirror? Or is it just that crappy soft-raid in the past has left a bitter taste in admins mouths? Or perhaps admins need the extra I/O of hardware?
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Oct 1, 2007
I plan to install one server with RAID with that run on a dedicated card which support FreeBSD. As i have not much experience in this,
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Oct 21, 2009
I have a question about soft raid 1 performance, what's the normal IO speed for a two disk soft raid 1.
We have two servers, and we have run following command in each server,
dd if=/dev/zero of=test.bin bs=1000M count=1
In one server we can get about 80MB/s, another one is about 40-45MB/s
Which one is normal?
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Oct 25, 2009
Recently we ordered a few servers with soft raid1, but seems the soft raid doesn't perform well, copy a 1G file, it takes about 40 seconds.
also sometimes it takes very very long time, I haven't count it, at least a few minutes, just like the server is dead.
I have run this command.
dd if=/dev/zero of=test.bin bs=1000M count=1
1+0 records in
1+0 records out
1048576000 bytes (1.0 GB) copied, 1.14416 seconds, 916 MB/s
But obviously it takes more more than 1 second, why it shows only takes 1 second?
I'm using two ST31000528AS hard disks.
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Apr 20, 2008
SOFT LAYERS data center did not fulfill its legal obligations with regards to the protection against hackers. I complained to SOFT LAYERS against the server hosting the Hackers sites two times and although they shut them down they keep coming back. They don't reply to my messages. These hackers are causing a lot of damage, what can I do to shut them down permanently. Please advice, SOFT LAYERS only talk to these guys to ask them to remove the hacking contents but they never do and SL don't bother to check on the.
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Mar 25, 2007
We are planning on using FreeBSD's in-built mirroring to create a RAID disk. We've tested this with two drives, but they had different geometry and we think this is the reason that the second drive was unable to boot when connected alone instead of the first drive
If we get a server with 2 identical HDs, will this mean that the software RAID will make a full duplicate on the mirrored drive, including master boot record, partitions etc?
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Dec 19, 2008
about the hd,there are two options, the first one is four 7200rpm sata to do raid 10,
the second one is two 10000rpm sata to do raid 1, about the performance, which one will be better?
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Dec 5, 2007
If there is a failed drive in RAID-1 running on Dell 2850, FreeBSD 5.4, can I just take out the failed drive and replace it with a new one, while the server is running? Will FreeBSD cope & rebuild the drive on the fly?
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Oct 21, 2007
Does anyone know whether if its possible to recover data on FreeBSD server?
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Oct 19, 2007
if its possible to recovred deleted data on Freebsd based systems?
Forum search didnt returned similar topics,anyone?
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Mar 7, 2007
Quote:
Today we are going to conduct a detailed study of RAIDability of contemporary 400GB hard drives on a new level. We will take two "professional" drives from Seagate and Western Digital and four ordinary "desktop" drives for our investigation. The detailed performance analysis and some useful hints on building RAID arrays are in our new detailed article.
[url]
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Jun 12, 2007
Windows Application 2003 crashed on RAID 5 server, we tried to take the NTFS files from the hardrive and mount them on a knobix which was booted from a cdrom drive. Knopix could read the files but it was unable to mount them I guess for compatiblity reasons.
Is there anyway we can get a backup of that ntfs file and restore our data?
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Nov 4, 2008
Anyone have any input on best practice for running vps servers it seems that there is a grey area when it comes to different configurations.
Ive seen so many
OpenVz
Hypervm with openVz
Virtuozo
Vmware
way to go about running a vps server and or servers and recomended configurations for each type.
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Sep 6, 2007
Our colo has two carriers, call them A and B. I have discovered the colo provider is round-robining traffic out it's two carriers on a per-packet basis, not per flow.
Assume we want to reach destination IP a.b.c.d.
%> traceroute -q5 a.b.c.d
Results show that at the hop leaving the colo's border router, some packets transit Carrier A and some Carrier B, to the same destination IP, during the same traceroute.
Is this a routing Best Practice, or am I correct in thinking this is the Lazy Man's way of load balancing across multiple circuits, multiple carriers? BGP route selection does not seem to apply here (i.e., either Carrier A or Carrier B but not both at the same time).
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Sep 21, 2009
Well I was quite surprised to see this but basically if you cancel a server at softlayer unless you go through after the fact and cancel all the associated orphans like ip ranges, vpn users, etc that was allocated to the servers you cancelled they will still bill you for this.
I have seen the notice on the cancellation process and I have always stated in cancellation ticket to cancel this server and all addons for it.
I find out today that I have been paying for at least 20 ip ranges, 15 vpn users and even a cpanel license for servers that I have cancelled months ago. How insane is that?
When a person cancels a server, they expect that server and all addons such as ip ranges, licenses and vpn users that was allocated to those servers to be cancelled as well. This seems not to be the case at softlayer and this is nothing more then an obvious way to bill clients for things that they are not even using or really cannot even use.
I guess that is what someone can expect from some wal-mart style network but I think this is simply an unethical practice. Most people would assume all items associated with a cancelled server would be cancelled with the server, that is what softlayer depends on .
IN the end I guess it is my fault for not reading "the fine print" but Im about sick of this fine print crap where hosts can outright decieve you and rip you off and then later point out some fine print validating their reasons.
Has anyone else had this issue at softlayer?
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Apr 15, 2009
Do you access your server remotely (RDC) and administer your website or do you use SSL from any machine?
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Aug 4, 2008
I use tripwire for a long time on my FreeBSD servers
one thing that's bugging me is that it takes like 20 minutes to check the system with the default config:
so I'd like to know:
1) is there currently some other tool that does tripwire job better?
2) anyone has a list of "probably changed files when a server is hacked", or something like that?
I mean, I'll be happy if tests can take 2 minutes instead of 20 and I detect intrusion 99% of the times instead of 99,9%
so "key files/dirs" would probably be enough instead of checking a lot of dirs with recursion
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Jan 15, 2008
Are the following file from Cpanel? Cpanel just update itself (set to automatic update to stable release) and got the following file integrity check.
/usr/bin/chattr: FAILED
/usr/bin/encode_keychange: FAILED
/usr/bin/gdb: FAILED
/usr/bin/gdbserver: FAILED
/usr/bin/gdbtui: FAILED
/usr/bin/lsattr: FAILED
/usr/bin/snmpbulkget: FAILED
/usr/bin/snmpbulkwalk: FAILED
/usr/bin/snmpdelta: FAILED
/usr/bin/snmpdf: FAILED
/usr/bin/snmpget: FAILED
/usr/bin/snmpgetnext: FAILED
/usr/bin/snmpinform: FAILED
/usr/bin/snmpnetstat: FAILED
/usr/bin/snmpset: FAILED
/usr/bin/snmpstatus: FAILED
/usr/bin/snmptable: FAILED
/usr/bin/snmptest: FAILED
/usr/bin/snmptranslate: FAILED
/usr/bin/snmptrap: FAILED
/usr/bin/snmpusm: FAILED
/usr/bin/snmpvacm: FAILED
/usr/bin/snmpwalk: FAILED
/usr/bin/uuidgen: FAILED
/usr/bin/wbemexec: FAILED
/usr/bin/xmlcatalog: FAILED
/usr/bin/xmllint: FAILED
/usr/sbin/ext2online: FAILED
/usr/sbin/filefrag: FAILED
/usr/sbin/mklost+found: FAILED
/usr/sbin/snmpd: FAILED
/sbin/badblocks: FAILED
/sbin/blkid: FAILED
/sbin/debugfs: FAILED
/sbin/dumpe2fs: FAILED
/sbin/e2fsck: FAILED
/sbin/e2image: FAILED
/sbin/e2label: FAILED
/sbin/findfs: FAILED
/sbin/fsck: FAILED
/sbin/fsck.ext2: FAILED
/sbin/fsck.ext3: FAILED
/sbin/logsave: FAILED
/sbin/mke2fs: FAILED
/sbin/mkfs.ext2: FAILED
/sbin/mkfs.ext3: FAILED
/sbin/resize2fs: FAILED
/sbin/tune2fs: FAILED
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Jun 27, 2007
I am currently web hosting my own site (at home) through port 8000 using firewire. My activation is by invitation only. This means that I have to manually activate you before you can post on my board. I do this for security reasons and plus there is no need to invite the outside world. However, anyone on the outside world can view the site. The url is in the form of xyz.abc.uvw.rst:8000/forums/ where xyz.abc.uvw.rst is the IP address and 8000 of course is the port.
In order to make my site more secure, I have also changed the admin dir so that you can't just url to .../forums/admin/ and then start typing in passwords.
In addition, the version of my board is hidden and html is disabled.
I believe that I am secure but I would like to know other best web hosting practice methodologies that will allow me to be even more secure, particularly in the case where I am hosting on my own computer in my own home.
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May 29, 2007
I installed system integrity monitor problem
It says:
[05/29/07 21:35:15]: HTTP service is online.
[05/29/07 21:35:15]: HTTP url request failed, assuming offline.
[05/29/07 21:35:15]: HTTP offline, restart limit exceeded.
How do i increase this so called restart limit?
System integrity monitor on server.dealsreferals.com has taken action in responce to an event. Recent event logs are enclosed below for your inspection. There has been 23 events today, if an average of 1000 events is reached, e-mail alerts will be terminated for the duration of the day.
- Events Summary:
Total event count: 23
Average event count: 2
- Service Summary:
FTP [online - 0 events]
HTTP [offline - 11 events]
DNS [online - 1
1 events]
SSH [restarted - 1 events]
MYSQL [restart failed - 1 events]
XINET [restarted - 1 events]
- System Summary:
LOAD [25.71 - status good - 17 events]
NETWORK [eth0 - online - 0 events]
- SIM Log:
[05/29/07 21:30:12]: XINET service is online.
[05/29/07 21:35:15]: LOAD 25.71 (status good)
[05/29/07 21:35:15]: NETWORK is online.
[05/29/07 21:35:15]: FTP service is online.
[05/29/07 21:35:15]: Error in http.chk, $LPATH_NT not found.
[05/29/07 21:35:15]: HTTP service is online.
[05/29/07 21:35:15]: HTTP url request failed, assuming offline.
[05/29/07 21:35:15]: HTTP offline, restart limit exceeded.
[05/29/07 21:35:15]: DNS service is online.
[05/29/07 21:35:15]: SSH service is offline.
[05/29/07 21:35:15]: Restarted SSH service (1 SSH events today).
[05/29/07 21:35:15]: MYSQL service is offline.
[05/29/07 21:35:15]: MYSQL restart failed, could not find /etc/init.d/mysqld.
[05/29/07 21:35:15]: XINET service is offline.
[05/29/07 21:35:15]: Restarted XINET service (1 XINET events today).
- System Log:
May 29 21:35:48 server smartd[2510]: smartd received signal 15: Terminated May 29 21:35:49 server smartd: smartd shutdown failed May 29 21:35:54 server xinetd[14167]: Exiting...
May 29 21:35:54 server xinetd: xinetd shutdown succeeded May 29 21:35:54 server bandmin: Shutting down bandmin:
May 29 21:36:01 server bandmin: [60G
May 29 21:36:01 server bandmin:
May 29 21:36:01 server rc: Stopping bandmin: succeeded May 29 21:36:05 server sshd: Stopping sshd failed May 29 21:36:06 server acpid: acpid shutdown succeeded May 29 21:36:07 server crond: crond shutdown succeeded May 29 21:36:07 server autofs: Stopping automount:
May 29 21:36:08 server sshd: succeeded
May 29 21:36:12 server xinetd: xinetd shutdown failed May 29 21:36:16 server xinetd: xinetd startup succeeded
===============================================================================
SIM 2.5-3 <sim@r-fx.org> 05/29/07 21:35:15
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Jun 29, 2008
I have a ethics and legality scenario I would like to pose here. This is to be considered a fictional scenario and any similarity to any real company or person is unintentional.
COMPANY X has colo racks in DATACENTER and hosts a client named COMPANY Y. COMPANY Y also hosts 50 small web sites on cpanel and 40 VPS servers on their linux VPS node in exchange for a discount or other compensation. During the month of may and COMPANY Y's bill raises from being 3000 past due to over 12000 past due to various reasons including purchasing of hds from the DATACENTER using COMPANY X's account, tech work dont by DATACENTER for COMPANY Y needed also billed to COMPANY X's account, as well as BW and rack costs. Seeing this alrming bill by the end of May COMPANY X begins putting pressure on COMPANY Y to pay some invoices as no payments were received during the entire month of may and COMPANY X is also having a hard time paying DATACENTER due to not being paid by COMPANY Y but makes efforts to pay 25% of the outstanding bill in June.
Near the end of june COMPANY X has had enough and arrives at the datacetner to attempt to move theritr clients off COMPANY Ys hardware so they can suspend service of COMPANY Y completely. On the visit COMPANY X brings 2 new servers in and begins moving clients of their over and COMPANY X notices this action and begins to suspend and remove access to all of COMPANY X's clients. COMPANY X then decided to power off the boxes of COMPANY Y and removes drives containing COMPANY X customer data for offline recovery. and because they beleived the DATACENTER might be untrustworthy enough to release hardware fromt heir rakcs without their permission. The drives were for as much colatteral purposes as for recoverying customer data. They then pack the drives in boxes and a bag and leave the datacenter having spent nearly 20 hours working and head on a long trip home and signs out of the data center in front of various techs holding the server parts and tools.
Upon arriving back to their office/home
They were informed that the removal of the HDs was not allowed byt he datacenter because the account was past due and it was discovered that several drives with cOMPANY X's clients were left in the datacenter which COMPANY X now wishes they had remembered to get. DATACENTER is furious and demands the account be paid in full by a fixed time or the entire colo will be cut power. COMPANY X scrambles to find others to help them and another major client who has alot at risk decides to help and a payment of $7160 is made to DATACETNER but it came in a few minutes past the deadline. DATACETNER had suspended servuce, and cut power but stated they wil return service shortly. Shortly after this it is discovered that several servers belonging to COMANY X and two other companies who were supsended in the same day were not int he rack anymore. DATACENTER accout rep responds with the following message in ICQ/AIM .....
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Sep 27, 2009
I need to look at a way to run a specific application over the internet, inexpensively of course. The issue is we have a professional association that wants to run an email discussion list using specific email discussion software (ListServ from L-soft). The association currently has a hosted website but no capacity within their current hosting contract to run a specific application like this. I am told that dedication servers run to the cost of $1000/month, which is way too expensive and not very cost effective for this single specific type of application for a 1300 member association.
Are there other options for running ths type of application on a shared server? Anybody have any ideas where I should look? Would prefer an Australian server, but as long as it can use our domain for emails, I would be happy.
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Jul 29, 2008
If I have a company watching my integral services, do I need SIM? Are there benefits to keeping it and having outsourced monitoring alongside it?
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Aug 26, 2014
The latest versions of Apache for Windows sometimes refuse to do a "soft" restart with httpd -k restart.
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Sep 28, 2008
I'm looking for a method to basically clone my plesk site to another hosting provider also running plesk, the idea is so if my site A is down, I can just re-point the dns entry to Site B, and minimize downtime.
It makes sense to me to pay 2x hosting costs so I can have a site mirrored in case the main site goes offline, then I can just switch the dns to the new host. The trick is how can I automatically keep Site B mirrored as part of site A. Using Plesk Backup doesn't seem practical as it's not automatic. Does Cpanel have a site mirroring feature?
Would something like rsync work? Doesn't this require shell access? I'm looking for best practices to be able to mirror Site A to Site B in an automatic method..
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May 20, 2014
I wrote a script to test the integrity of my DNS and run it from time to time on my server...
I just ran it today and it discovered I suddenly have 5 domains with SOA-records that doesn't point to itself. They point to the secondary nameserver.
They are records that exist for years and were for sure correct before (I know this because of that script).
If I do a "restore defaults" it isn't corrected and if I switch to slave and then back to master it doesn't change either...
The file /var/named/run-root/var/obfuscated.com is updated, but the slave-DNS stays in that file...
The only way I'm able to correct it is by deleting the NS-record with the slave DNS and adding it again.
I assume there's some mechanism that scans the NS-records and then decides to make that one the SOA. This has always worked fine... also on this server.
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Jun 5, 2009
My server just hang and whole hard drive was turn to read-only mode.
My KVM shows this
Soft Lockup - CPU#1 stuck for 10s [shutdown:10888]
I can't even google for such error. Anyone experience this before?
Check the attachment for screen shot..
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Apr 20, 2007
Here is what i have:
- Webserver for member to download which is using user/pass from .htpasswd to allow anybody can see file or download.
What i need:
- any software(code) can show me who log in and when, how much they download, how many time did they login. ---> this to prevent account from to be shared between many people.
- some sort of tool or software can allow me to add new user/pass quick since i am manuallly adding new username/password encrypted to .htpasswd file.
what software to use( or to buy if not so exspensive).
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Jan 6, 2009
I have 35 clients hosting on my dedicated server.
I am going to be ending my service as a host provider, and I need to transfer all of my clients to a new host.
Many of my clients sites were written 3-4 years ago in php while global vars was still off, and so many of the sites might not function correctly if I just pop them to a new host.
My first solution would be to bypass the php .ini file with a public_html/ based ini that would override any newer server settings.
Does anyone know of a good host that could take my clients? And also support the php version locally to the shared account?
I need a host that is reliable, and honest.
Am I going about this the right way?
I am open to any suggestions or advice on this.
I should probably add, all of my clients pay on an annual basis from $89-$140. None of my clients run video sites or any heavy media stuff.
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Mar 11, 2007
I never use RAID1, but consider to use RAID1 server.
Let's say one hard drive failed and the DC replaced it with the new one, I was wondering if the system will automatically copy the data into the new drive or we should do some commands to copy the data into the new drive?
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Dec 30, 2014
When I am syncing plans with subscription, it shows
Error: SQLSTATE[23000]: Integrity constraint violation: 1062 Duplicate entry '16-servicePlanId' for key 'PRIMARY'
Which table should I check for the problem in mysql database?
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