Server Crash: Detective Work Advice
Sep 5, 2007
I am running FC2 with cPanel.
My server stopped responding to everything from http to ping and I had to do a hard reboot on it.
Now, I'd like to figure out what happened but am not sure where to start. I've been sifting through /var/log/messages but can't pin point what I'm looking for.
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Mar 25, 2008
I've never purchased a dedicated server before, so I was wondering on what some of the more experienced members here thought.
This server I'm getting needs to be able to run VoIP (all details below), and maybe some E-commerce Software.
Details on what I need :
Two IBM Xeon+ servers having 2 GB RAM 250 GB HDD with fedora core 4 installed and live ip(public Ip) on those two boxes.
2Mbps direct line in one server.
Both boxes Should be in local LAN.
Would you recommend a Core2Duo server over the Xeon+ ?
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Mar 4, 2008
Seven days ago, I purchased a HiVelocity server. A week later and I am still waiting. It has had non-stop problems.
HiVelocity have agreed (after my asking, nothing was offered) to move my start date forward so I don't pay for this downtime, nonetheless, after a week of this I am beginning to feel some other effort is required on there part.
What's normal after a weeks setup time and still no working server? Refund? Upgrade to better working machine? Or just chargeback?
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Jan 3, 2009
I have in my possession a new server which is running cPanel. For some unknown reason it keeps crashing about every 4-6 hours where I must get a remote reboot done.
Its starting to annoy me that I'm unable connect to anything. What I suspect is high disk red/write. As what I'm finding is over 10k blocks being written per second with only 300 being read per second. I also am not seeing any bandwidth out/in usage being high.
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May 27, 2009
I have a dedicated server with NyNOC and earlier on today the server dissapeared off the net, wouldn't respond to ssh, http etc, nor pings
I submitted a ticket and the server got rebooted, went through the FSCK check and came back up ok, but now I'm concerned as to what caused it
Andy the technician said he couldn't find out the reason why and neither can I
I can only put it down to PERHAPS faulty hardware somewhere?
The /var/log/messages file doesn't say anything useful, the last entries show..
Quote:
May 27 06:41:17 server kernel: Firewall: *UDP_IN Blocked* IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:xxxxxxxx SRC=xxxxxxxx DST=255.255.255.255 LEN=153 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=8778 DPT=11777 LEN=133
May 27 06:56:43 server kernel: Firewall: *UDP_IN Blocked* IN=eth0 OUT= MAC=ff:ff:ff:ff:ff:ff:00:xxxxxxxx SRC=xxxxxxxxx DST=255.255.255.255 LEN=153 TOS=0x00 PREC=0x00 TTL=64 ID=0 DF PROTO=UDP SPT=8778 DPT=11777 LEN=133
May 27 07:02:56 server kernel: Firewall: *UDP_IN Blocked* IN=eth0 OUT= MAC=00:14:d1:14:a7:c0:00xxxxxxxxx SRC=xxxxxxxxx DST=xxxxxxxx LEN=622 TOS=0x00 PREC=0x00 TTL=48 ID=0 DF PROTO=UDP SPT=54284 DPT=1027 LEN=602
May 27 07:03:13 server kernel: Firewall: *TCP_IN Blocked* IN=eth0 OUT= MAC=00:14:d1:14:a7:c0:xxxxxxx SRC=xxxxxxxx DST=xxxxxxxx LEN=48 TOS=0x00 PREC=0x00 TTL=117 ID=47647 PROTO=TCP SPT=21173 DPT=22 WINDOW=65535 RE$
May 27 13:01:45 server syslogd 1.4.1: restart.
May 27 13:01:45 server kernel: klogd 1.4.1, log source = /proc/kmsg started.
May 27 13:01:45 server kernel: Linux version 2.6.18-128.1.10.el5PAE (mockbuild@builder16.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)) #1 SMP Thu May 7 11:14:31 EDT 2009
May 27 13:01:45 server kernel: BIOS-provided physical RAM map:
May 27 13:01:45 server kernel: BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
May 27 13:01:45 server kernel: BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
May 27 13:01:45 server kernel: BIOS-e820: 00000000000e7000 - 0000000000100000 (reserved)
May 27 13:01:45 server kernel: BIOS-e820: 0000000000100000 - 00000000affb0000 (usable)
May 27 13:01:45 server kernel: BIOS-e820: 00000000affb0000 - 00000000affc0000 (ACPI data)
May 27 13:01:45 server kernel: BIOS-e820: 00000000affc0000 - 00000000afff0000 (ACPI NVS)
May 27 13:01:45 server kernel: BIOS-e820: 00000000afff0000 - 00000000b0000000 (reserved)
May 27 13:01:45 server kernel: BIOS-e820: 00000000fec00000 - 00000000fec01000 (reserved)
May 27 13:01:45 server kernel: BIOS-e820: 00000000fee00000 - 00000000fef00000 (reserved)
May 27 13:01:45 server kernel: BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
May 27 13:01:45 server kernel: BIOS-e820: 0000000100000000 - 0000000140000000 (usable)
May 27 13:01:45 server kernel: 4224MB HIGHMEM available.
May 27 13:01:45 server kernel: 896MB LOWMEM available.
May 27 13:01:45 server kernel: found SMP MP-table at 000ff780
May 27 13:01:45 server kernel: Memory for crash kernel (0x0 to 0x0) notwithin permissible range
May 27 13:01:45 server kernel: disabling kdump
You can see it was down for some 6 hours, but I can't find a reason why
Diskspace is ample, there's no odd programs/scripts installed (it's a Centos server running whm with CSF firewall)
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Jul 1, 2008
I reboot my cpanel server twice last night and it had crash
I am now running e2fsck and it's trying to fix the inode thing.. i've been pressing <y> 10000 times! Poor thing my fingers cramp
I've been thinking to mount my primary drive into another cpanel server (not a fresh server) as secondary drive and restore from there. The question is how? I need detailed steps by steps as it's urgent for me..
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Aug 15, 2007
I just got a new server the other day, installed cpanel and all my usual stuff in it.
Then I started transferring some accounts off my other server on the same network. It would transfer small accounts ok but I have this one big account,. the sql is like 300 mb. It would get to the restore on it then the server would crash and be totally unresponsive.
It has to be manually rebooted at the datacenter. There is nothing in any logs. At first I thought it was the load getting hi and doing it but I ran the unix bench and got the load to 14 and it didnt hurt it.
It only does this on restoring big sql db. At the dc they say the screen on the console goes blank.
Ive done looked and cant find anything in the box. Its actually the same exact setup I use for my other servers.
So the dc is looking at it today. Has anyone ever ran into a problem like this and if so what was the cause?
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Feb 16, 2007
What could cause the following on one of our servers?
Rebooted and was fine.
May have happened before, will have to dig deeper into logs.
Running CestOS 4.4 (cPanel/WHM)
Assertion failure in __journal_file_buffer() at fs/jbd/transaction.c:1966: "jbd_is_locked_bh_state(bh)"
------------[ cut here ]------------
kernel BUG at fs/jbd/transaction.c:1966!
invalid operand: 0000 [#1]
SMP
Modules linked in: ipt_state ipt_TOS iptable_mangle ip_conntrack_ftp ip_conntrack_irc ip_conntrack ipt_REJECT ipt_LOG ipt_limit iptable_filter ipt_multiport ip_tables autofs4 sunrpc md5 ipv6 loop dm_mirror dm_mod button battery ac uhci_hcd ehci_hcd e100 mii ext3 jbd ata_piix libata sd_mod scsi_mod
CPU: 1
EIP: 0060:[<f8830dfc>] Not tainted VLI
EFLAGS: 00010216 (2.6.9-42.ELsmp)
EIP is at __journal_file_buffer+0x42/0x221 [jbd]
eax: 0000006b ebx: e5b6d3dc ecx: da83add0 edx: f88361ca
esi: f6da3300 edi: 00000001 ebp: 00000000 esp: da83adcc
ds: 007b es: 007b ss: 0068
Process pdflush (pid: 5216, threadinfo=da83a000 task=cb5ad2b0)
Stack: f88361ca f8835eac f88361b5 000007ae f8836634 e5b6db3c 00000000 dcca5660
e5b6d3dc f7638d68 f7f48200 f8830165 f7f482e4 00000000 00001000 f7638d68
dcca5660 00000000 f8898e42 00001000 00000000 dcca5660 f8898cda dcca5660
Call Trace:
[<f8830165>] journal_dirty_data+0x17d/0x1bc [jbd]
[<f8898e42>] ext3_journal_dirty_data+0xc/0x2a [ext3]
[<f8898cda>] walk_page_buffers+0x62/0x87 [ext3]
[<f889927a>] ext3_ordered_writepage+0xee/0x13a [ext3]
[<f889917a>] journal_dirty_data_fn+0x0/0x12 [ext3]
[<c0178962>] mpage_writepages+0x1c2/0x314
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Jan 28, 2007
we have dual xeon linux server redhat 9 / cpanel
we have a strange crash .... you cant access ftp /ssh / httpd ...
i need to request a server reboot to get access ... and everything after this run ok...
i have check message log .. nothing in it for example
10:20:10 ftp log
11:15:60 rebootlog
also the same in httpd log ...
so as you see there is a gab between the server crash till reboot....
this happen 3 times till now ...
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Mar 10, 2007
The Apache server on one of my box crashed last night and the log file simply states:
[Fri Mar 09 23:51:49 2007] [notice] caught SIGTERM, shutting down
One thing puzzled me is that there are a couple of symbolic links created in Apache home directory:
lrwxrwxrwx 1 root root 25 Mar 9 23:51 build;45f23959 -> ../../usr/lib/httpd/build
lrwxrwxrwx 1 root root 19 Mar 9 23:51 logs;45f23959 -> ../../var/log/httpd
They were created around the same time when Apached stopped.
Has anyone seen similar things like this? What could be the root cause?
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Apr 21, 2007
My server is constantly crashing (halting to dead) and needing reboot literally every few hours. I cannot trace the cause of this whatsoever. Please help out.
CPU/Memory/MySQL Usage shows no accounts in red or yellow zone ....
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Apr 14, 2009
I have a windows 2003 server with Plesk installed. It keeps crashing and requires a reboot every couple of days.
Here are screenshots of event logs and task manager.
Also, its a Pentium HT with 1GB memory, so it isn't too slow for Windows.
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Mar 19, 2008
I have a lynix root server with 1and1.com and recently the server has been going down I have no access to FTP/the sites or root. Their support tells me to look in var/log but im not sure what file to look in or what im looking for as far as to why the server would crash.
So far my solution has been to re boot the server and it has been working but i need to find the cause of this...any suggestions on where to look or what to look for?
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Oct 29, 2009
I have server load like 40.
Nothing lags.
Server has RAM usage 20% and CPU usage goes up to 25%
Swap isnt used at all.
Should I be afraid of server crash incase server load goes up to 60 or 80 without ram and cpu usage rising that much?
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Jun 13, 2008
I have a Linux server running some reasonable setups:
Opteron 180, 4 GB RAM, running 8x 36gb 15k scsi with hardware raid 10 -- this is one of the servers from WebNX advertised here not long ago
Running CentOS 4(?), Apache2/MySql 4/PHP5.2, the normal stuff.
I have only one main site on the server, which runs a pretty old PostNuke CMS in Chinese (0.7.2.3 Phoenix) + PNphpBB2 + Gallery 1.5.7 (all integrated into PostNuke). This site is pretty light in "human" traffic, getting about 20K hits per day.
Now, the problem I have noticed with this site, is related to the many MP3 files stored in the Gallery albums. There are lots of HTTP requests to these files, most maybe from Chinese search engine bots (judging from IP), that slows the server to a crawl and even crashes Apache. This happens in the late hours here when it's day time in China. As a matter of fact I just did a reboot, and in 5 minutes there are more than 1000 HTTP requests to MP3 files resulting in a traffic of 2.1+ Gb. So within minutes, the server is brought to its knees again and I can't even get the "apache status" from CPanel now: "Unable to retrieve apache status".
The company that manages the server for me said there's no security problem here. We have installed an Apache extension to limit the number of simultaneous requests to media files to 1. However that doesn't seem to help.
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Oct 12, 2007
for months my server has been running fine, since about a week ago the server crashed and was up and down
the fault was found to be faulty ram which has been replaced.
now I have had every tom, dick & harry take a look at the server to get it stable again but im still having issues.
The server seems to run fine but crashes when I try and repair or backup my database.
the database is large like 30gig but the server used to do this fine before but it wont now, it get so far then hangs.
Server:
Dual Core Xeon
4GB Ram
2x 250GB HDD
Raid 1
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Dec 3, 2007
My RAM is 2G.
The cache memory of my server is eating, After 2 weeks, the cache memory is below 1G, then the server crashed.
After I reboot the machine, the cache memory back to normal. But it starts to eating again.
I have attached the graph.
I am using lighttpd, php, mysql
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Apr 5, 2007
I have a problem. to buy dedicated server but I don't really know what to buy. I need some kind of stress test for server so that I can be assured that my website won't crash when it will be on front page of digg. Does something like that even exists?
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Jul 6, 2007
The company I work for unfortunately runs their site on a IIS server. I want to install some forum software, vBulletin or phpBB onto the server and run it on the same site. PHP of course needs to be installed to do this.
Boss is worried that putting PHP on same server as ASP might take down the site if something goes wrong. What are the odds of this happening if I follow directions and what steps should I take to install?
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Sep 5, 2014
generate crash dumps for apache 2.4.9 at the time freeze or crash in windows environment 2008 server R2.
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Aug 17, 2008
Hey everyone, I've been a loyal customer of 1and1 for a few years now, however some circumstances have come up that require me to upgrade to something with unmetered bandwidth with some better hardware specs, simmilar in the fashion that 1and1 in Europe does (dedicated 100mbit for 2TB or so, then downgraded to 10mbit that can be reset to 100mbit manually for no extra cost). So I was looking at 1and1.co.uk's Buisiness III server ( order.1and1.co.uk/xml/order/ServerRoot ), and I figured i could cut some corners here and there to snag me an account even though I'm in the US, but I realized that their price plus VAC makes them a bit less competitive in terms of price. I was wondering if anyone would know of some place that can offer the freedoms 1and1 offers (basically, "here's your server, here's our ToS, have a blast"), with simmilar and/or better specs as that specific package, and possibly deals internationally?
I've given the foums a good once-over (I've lurked for several years now), and have gotten a general idea, but I figured I'd ask just to get a better idea.
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Feb 28, 2009
I am need a VPS plan which is good enough for handling such CPU intensive programs. I had already read reviews about solarvps,wiredtree and Hostv. I really liked offers from solarvps, but I am a noob when it comes to servers so please advice me hosting talk members. Plus I need full transfer support for my website from hostgator they are ridiculously expensive.
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Aug 31, 2009
I have been in online business for about 5 years, but only this morning found out what DDoS is. Shame on me.
Our site was attacked this morning and the host (shared hosting) has switched off the dns connection so our site is currently down along with email. We are a small firm and we are absolutely getting killed by this right now.
The tech support in this hosting company (icdsoft com) is absolutely phenomenal based on previous experiences and here is what they said throughout the day:
"Your site gets approximately 60 hits/second. Unfortunately there isn't much that can be done in such situation. We already blocked the most active IP addresses in our firewall, but this does not help, as the attack comes from many sources "
About an hour later they tried again and the following was said:
"Unfortunately we do not know how long this attack will last. At the moment there are more than 1100 requests/second towards your site."
about an hour after that the following was said:
"The attack is still going on. Currently, the incoming rate is 8MBit/sec. We will enable your site, and we will notify you when the attack is over."
My questions are the following and I will appreciate any advise as I am absolutely clueless about this:
1. What should I do at this point? Should I move the site to a dedicated server and if so, will this solve the DDOS problem?
2. Should I purchase anti DDoS package? They are extremely expensive it appears.
3. If I move to a new dedicated host, which one should i choose? we are a small site, with about 10,000 uniques per month and do not have massive budget so cost is a big factor.
4. How long will this current attack likely last? I know it's impossible to answer, but approximately how long do these things last and is it likely to repeat in the future if we leave things alone?
Any knowledgable advice on this matter will be greatly appreciated as we are hurting badly due to this and even 1 day loss of income for us is extremely serious and hurtful.
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Jun 4, 2007
to move one of my sites from 1-st dedicated server to 2-nd dedicated server.
Of course i have shell access on both servers. As site is huge one (60gb space and 99% of files in one folder) going to tar -czvf this folder and move it.
or may be mput all files.
the only problem that i have ... is, that i need SSH commands advice.
if i type [mput *] i must keep window opened. but as u understand 60gb is can be transferred during ~10-15 hours. that's why need to know, is there any command that i must type (with mput *) and close window. So, don't be online all this time and/or keep shell window opened during this tranfer.
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Jan 16, 2009
I'd like to go with 1and1, using ASP.net and MS SQL Server, and the ability to setup lots of databases, websites and URLs, but I'm not keen on maintaining the server, updates, backups etc.
I'd also like to access the web space and upload files, from any computer.
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Apr 6, 2008
Can you recommend here some reliable shared host that allow Adult WordPress blog , no movies or images will be hosted at all , it will contain only linking to rapidshare links.
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Oct 17, 2009
I have been with IGSoBe for a little over 2 months now, going on 3. And the rates seemed great. I have resold a few servers for them to clients, and everything seemed okay. The server setup times exceeded the 72 hour maximum. I have a C class of IP addresses with them which were supposed to take 7 days MAXIMUM, I was told in the *WORST* case scenario. I think I waited 3 - 5 weeks for the C class which had me at a standstill with VPS sales. Long setup times had a few clients back out. Have had a few comments about slow network in that it isn't blazing fast like some premium providers, although I haven't had a problem myself.
Each month goes by and there's a downtime about this, or a downtime about that. Well this month it has been smooth sailing, I thought all the problems must have been ironed out, and to my dismay come the 15th, the DAY AFTER paying the invoice for the server, BAM the server is offline. IGSoBe main website still up, as well as client servers so I know its not a mass issue. So I open a support ticket on the 15th. It is now the 17th and no reply to the support ticket. Earlier this afternoon I finally emailed the owner John directly and have still not got any response or acknowledgement. John is the only one that can enter the datacenter suite that he colocates in, so contacting him, or him being notified is important.
So going on 72 hours of downtime, no response or support from the provider, I am 100% sure no matter what John could offer me there's just no way I am staying with IGSoBe any longer than I have to. I just paid the invoice, so I am stuck for the rest of the month as all the income went towards the invoices. (One invoice for IP addresses, the other on a different day for the server). Dare I file a paypal dispute? My concern is also my clients data, about 60 VPS' total, and the WHMCS client database which I do not have a recent backup locally (I know better now to keep a backup of the most important of all important data and keep it in a safe place off-site!). If I file a dispute, it is unlikely I will see any of that data again. As if cubichost.org needs any more bad reputation right?
If you do a quick search here on WHT for igsobe you will first notice plenty of complaints.
So this is the deal with IGS:
John, the man with the plan is the sole proprietor (as of earlier this year, I know IGSOBE wasn't a registered LLC in the state of FL as the website might insinuate), he is the only one that physically manages the servers, transiting from his home to the suite he leases in the fibermedia datacenter in the carrier neutral facility in Miami FL. He used to, in the past, transit to and from the datacenter 2 times a day to set up servers, handle reboots, OS reloads, and that sort of thing. Recently, we had a client with a pentium 4 who needed a root password reset, this was on the 7th of this month, it is now the 17th and the password has still not been reset. I am in fear of losing this client because of this which would not help in our hopes to grow and succeed as a provider. I also have admin access in WHMCS at IGSOBE as a sales agent, and have noticed no one else logs in anymore, ESPECIALLY not John. Also, no one is hardly on LiveZilla chat or in IRC anymore.
I hope all goes well for John, I hope he can pull his act together and get IGSoBe back to working order. I would stay loyal but this is not the first time this has happened and I have to go. I have to make a good name for cubichost. I would suggest for the present time though, to stay away from igs!
So by the 7th of next month, hopefully earlier though I plan to make a move to BURST.NET which will hopefully go well I hear great things about them. Only a few bad things, mostly from > 1 year ago.
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Jul 4, 2008
I am wondering if any of you guys can give me some advice. I can not access my geekstorage reseller hosting panel nor will any of the sites come up on the net for me.
I think everyone else can see them but I can't access them. Geekstorage says they my IP is on the allow list and I am not blocked from their end. They said it was with my ISP.
I have embarq dsl. I called embarq this morning and they said that my ip was not blocked any way shape or form on their end. He was even able to pull up my cpanel and some of my sites. Also I can pinged from my computer to my control panel and it went through. I have done system restore on my machine thinking maybe windows update had caused something but that is not the case. Any advice would be greatly apprecaited. I have been with geekstorage several months and never had an issue accessing my accts.
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Apr 4, 2007
I am planning on launching an mp3 site for a music studio. the problem now is, i dont know what type of bandwidth usage to expect from users and i dont want my client to think its my fault. (some of them dont really want to know the technical basics)
To give a hint of the advice i am looking for,: say i have 300 different mp3 files at 3.0 mb per size what size of hosting and bandwidth should i look for that can cater for upwards of 100,000 users who will listen to up to 6 hrs of music on the site.
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Jan 22, 2009
I'm looking to host my own website(s), money isnt really an issue, but I'd like some advice on which package would be most suitable. I can't upgrade to different platforms, so I need to get the right package from the start.
I like the sound of the dedicated server, but my experience of supporting servers isn't great, so I'm wary of getting this option.
The VPS looks good, could anyone please tell me how this works? What the difference between thi sand a dedicated server? Do you need alot of server support experience to use this?
Would the normal MS hosting package be suitable? I take it its not very flexible.
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