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1
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1answer
3k views

“show_signal_msg: N callbacks suppressed” then pegged at 100% and machine unresponsive

This happened on an Ubuntu 14.04 64-bit DigitalOcean Droplet: Apr 22 02:17:02 localhost CRON[32514]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) Apr 22 03:16:59 localhost ...
7
votes
3answers
123 views

How can you distinguish between a crash and a reboot on RHEL7?

Is there a way to determine whether a RHEL7 server was rebooted via systemctl (or reboot / shutdown aliases), or whether the server crashed? Pre-systemd this was fairly easy to determine with last -x ...
2
votes
5answers
7k views

How can I fix Purple Screen of Death for ESX 5.5?

I have a ESX 5.5 installed on my HP Proliant DL 180 G6 with a configuration of 8X Intel(R) Xeon(R) CPU E5540 @ 2.53GHz, 24 Gb RAM. Recently the server has crashed four times, showing the Purple ...
5
votes
1answer
2k views

Analyzing BSOD dump file from Windows 2008 R2 SP1

I have a problem with a virtual Windows Server 2008 R2 SP1 server running withing VMWare. The server is running Citrix and also has Symantec Endpoint protection installed. It randomly crashes and goes ...
1
vote
1answer
2k views

firewalld service is running, but firewall-cmd doesn't work

I am new to Centos 7/Server management. I am trying to figure out how to work with firewalld. my kernel release is: 2.6.32-042stab084.20(OpenVZ) And: #firewall-cmd --version #0.3.9 The problem is ...
3
votes
3answers
7k views

Is a hardware watchdog already active at my CentOS server?

I rent a dedicated server (with Intel Haswell CPU and custom hardware) at a lowcost hosting service and use it with CentOS 6.4 / 64 bit Linux (with stock kernel: 2.6.32-358.14.1.el6.x86_64). Every ...
0
votes
0answers
54 views

Windows Server 2012 R2 - Printing causes any application to crash

We have a problem when trying to print on a new virtual machine using windows server 2012 r2 on all (ipv4) network printers. When we try to print from Adobe Reader, SQL server management and all ...
2
votes
1answer
10k views

Server crashed, some MySQL databases are broken. Trying to recover with InnoDB recovery, but ibdata1 seems corrupt

I've a problem. Some days ago my root server crashes after a power outage. I realised that the MySQL server won't start. In the logs I find out that an error occured with InnoDB's ibdata1. I've ...
1
vote
1answer
47 views

KVM based VPS crashes every 3-7 days. Is it an issue on VPS side or node's?

I'm wondering could it be so that a VPS is a root cause of crashes which occurs every 3-7 days at night 03:00 - 04:00 time (kernel bug, or something else), or is it a node on which the virtual server ...
-3
votes
2answers
57 views

How unlikely it is that 2 SSD disks in a RAID 1 crash and how to recover from it? [closed]

How unlikely is it that a mirrored raid of 2 ssd drives fail together. (Both sector 0) unreadable. Me is told that ssd generally never breaks. So that both break at same time seems unique. What ...
1
vote
0answers
22 views

BSOD BugCheck on Multi-core system - What thread caused the crash?

I am aware that a Windows' system will crash with a stop error and "blue screen" for a few common reasons, some of which may be: A device driver or OS function that runs in kernel-mode space ...
2
votes
0answers
62 views

Kernel Crash - kernel: BUG: unable to handle kernel paging request at 00000000ff8179b9

One of my Oracle Linux 6.5 Server running Oracle ASM/GRID experienced a kernel crash, it didn't respond i have performed a hard reboot. Server is Oracle Linux 6.5, kernel 2.6.39-400.214.3.el6uek....
1
vote
0answers
27 views

Apache hanging after updating website files

I have a Linux server running Apache and PHP. Sometimes (about once every dozen or so), after updating the PHP files and/or static files, Apache will hang some 5 to 10 minutes afterwards (depending ...
0
votes
0answers
18 views

Terminal servers, VM clone keep getting kernel-power 2008r2 crashing both servers

I'm desperate at the moment to get an answer to the following problem. Als servers are managed in our VMWare-vcenter environment. We've got 2 terminal servers, term01 and term01 and we also got a ...
-3
votes
1answer
113 views

How to know if the reboot cause is a linux kernel crash? [closed]

When my system reboot. I want to know the cause of the reboot especially when the reboot cause is a kernel crash. Are there a way to know if the reboot cause is linux kernel crash? like read ...
4
votes
3answers
67 views

How do you force Windows to keep memory dumps?

I'm trying to debug a sporadic problem with some Dell tablets out in the field that crash intermittently. Looking at the Event Viewer logs, it seems that Windows automatically creates a memory dump ...
1
vote
1answer
198 views

HP ProLiant ML350p Gen8 server keeps crashing (full speed fans)

I have a problem with a HP ProLiant ML350p Gen8 server. Most of the time it runs fine, but after several weeks of uptime, the server crashes out of the blue. This happened about 5 times now. When it ...
0
votes
0answers
12 views

yet another “Task blocked for more than 120 seconds”

RHEL5 linux host running on a VM was non-responsive. The data center operators took a screenshot of the console then rebooted the box. What they show was INFO: task txThread:IWFCDI:7496 blocked for ...
3
votes
2answers
203 views

Windows 2012 R2 server, crash, no dump file

I have a Windows 2012 R2 dedicated server. 64 GB RAM. Sitting in a remote datacenter. It crashes about 1-2 times a day. I have a KVM over the internet that I can view the screen. Screen says ...
0
votes
1answer
60 views

Apache crashing with short bursts of traffic

Our Apache server crashes whenever we have short bursts of traffic (200+ users at a given time). We have to manually restart it to get it back online. I'm hoping to find out some common issues that ...
2
votes
0answers
71 views

After Upgrading to Ubuntu 15.10 from 15.04, EC2 Webservers are Crashing

I have a variety of Ubuntu machines on EC2 running in production, with about 30 that were upgraded from 15.04 to 15.10. With most of the machines, the upgrade went flawlessly and experienced no issues ...
2
votes
0answers
97 views

Sudden failure of networking interface on CentOS 7

We're running a LAMP stack VPS on CentOS 7 hosting a few websites, MariaDB databases, and associated services. In the middle of the night our server mysteriously went completely offline. When we ...
0
votes
0answers
15 views

How to stop cloud server crashes

I have had this ongoing problem with my server hosting this domain http://www.independentlondon.com, a dedicated cloud server i'm trying to manage myself. It just keeps crashing despite many changes i'...
1
vote
2answers
272 views

How to disable core dumps on Debian 8

I pretend I've already tried everything out there, but my Debian 8 keeps creating core dumps when something crashes. It's happening about once or twice in a month. It's a production server for a few ...
0
votes
1answer
233 views

Server 2012 R2 unexpected crash DRIVER_IRQL_NOT_LESS_OR_EQUAL

I've a Windows Server 2012 R2 server which acts as Hyper-V host for multiplice Windows/Linux VMs. Since yesterday the server is offline from one second to another, and will reboot automatically. I ...
-1
votes
1answer
88 views

I launch stress-ng -d 9 and my server crashes

I'm trying to understand why my server crashes. It reboots itself after some minutes when launching stress-ng -d 9 The last logs I received are these ones: [pid 1547] write(3, "Z\26\260\2273\0Z\...
2
votes
0answers
32 views

Perf crashing my RH

We are running perf on a 2.6.32-358.56.1.el6.x86_64 on an 8-core, dual socket machine. We have CPU iso on CPUs 1-31 (all except for 0), and our application is using CPUs 1-31. A few seconds into ...
0
votes
1answer
59 views

How to fix HP MSM760 Wi-Fi controller crash?

The HP MSM760 Wi-Fi Controller Team composed by four HP MSM760 is crashing and rebooting once a week at least. Each controller crashes at random if there is load on it (it only crashes at weekdays at ...
0
votes
0answers
125 views

php5-fpm crashes VM in nginx

I have been having ongoing 504 errors (503s). It has gotten to the point where it is so bad everytime someone trys an update in wordpress they get a 504. When troubleshooting I tried to adjust a ...
0
votes
1answer
134 views

CentOS Development Server Crashing Frequently

I am running a development server on a fairly old version of CentOS 5. This server has been live almost constantly for the past five years ago, so has been pretty stable. A while ago, it crashed ...
5
votes
2answers
135 views

MCE Error Codes/Pink Screen - Should they be a cause for concern?

So I recently purchased a server grade system along with all server grade peripherals. I'm licensed for ESXi 6 and have all recent patches installed. System has been running around 2 weeks now and ...
0
votes
1answer
183 views

PC with windows 7 block entire network during Update installation

I manage a domain with 80 PC that take the updates from the WSUS on server 2k8 R2, I have set the update to be installed once a week at 14:00 since in this time all the PC are on. Once a 2-3 month ...
15
votes
2answers
2k views

CRITICAL STRUCTURE CORRUPTION on Windows Server 2012 R2

I have a Windows Server 2012 R2 virtual machine; yes with all the updates. Additional software include Microsoft SQL Server 2014 (was 2012 on a previous VM). The web hosting company includes xenpci....
0
votes
1answer
36 views

MySQL Story + Crash

My MySQL crashed yesterday, and in a panic I ended up (stupidly) deleting the ibdata1 and innodb logfiles. I then used the testdisk feature and recovered the old ibdata1, but was unable to recover ...
1
vote
1answer
248 views

Windows Server 2008R2 crash every hour

I have a Windows Server 2008R2 which crash every 1 hour. The server is physical and is provided by fasthosts but I can access the server(out of the country). So I checked for Event Viewer before crash ...
4
votes
3answers
3k views

Can disk space be the reason for a server crash?

After looking into the MySQL error file, I found an error regarding disk space. Now I think its the reason for MySQL crashing: [root@xxxx ~]# cat /var/lib/mysql/xxxx.com.err 120528 17:45:05 [Note] ...
0
votes
0answers
175 views

Systemd - run script/unit after system crash

Short version: Is there any simple way how to set up systemd so it runs a script or a unit when system boots after a crash ? And possibly have other units wait on its completion? I suppose I could ...
0
votes
1answer
35 views

kjournald and apache2 hang on xen vps

I have 2 low-traffic wordpress websites on a Debian 7 VPS (1G RAM, 1G SWAP, Dualcore 2.4GHz CPU). Between 5 and 10 days, kjournald hangs, the kernel reports and I/O error and the filesystem (ext3) ...
0
votes
0answers
95 views

system randomly powers off

I've got an HP MicroServer N54L running Linux Mint 17.2 (fresh install). Every few days, I find the machine in a powered-off state (standby, actually - not in the sense that it went to sleep, but in ...
1
vote
0answers
110 views

Simultaneous server crash in fail over cluster

I have 2 servers in a failover cluster. The cluster defines a shared 'ClusterStorage' drive. The drive maps to a SAN device through iScsi. Recently, the 2 servers rebooted on their own at the same ...
0
votes
0answers
44 views

Server crashes with incredibly high load

I got a problem with a KVM-virtualized server (Proxmox-based), running on Debian 7.8 and PLESK. Sometimes there are loads > 200 (sic!) and I just do not get the reason why. The monitoring shows the ...
1
vote
1answer
615 views

Random machine hangs with NFSv4 on CentOS/RHEL 6.5

We have an in-house "compute farm" with about 100 CentOS (free re-distribution of RHEL) 5.7 and 6.5 x86_64 servers. (We are in the process of upgrading all the 5.7 boxes to 6.5.) All these machines ...
0
votes
1answer
591 views

Server high memory and cpu - no leads

I've been asked to troubleshoot a server hosting our application at a client's facility. The client has complained to us on two separate occasions in the last week - week and a half. In one instance ...
1
vote
2answers
433 views

Tomcat 5.5: “Exception processing JAR at resource path” leads to java.lang.OutOfMemoryError

We have an old server running Tomcat 5.5. Yesterday we deployed a war file, and then it started to crash. Looking at catalina.date.log I found some java.util.zip.ZipException and then java.lang....
0
votes
1answer
550 views

MariaDB crashing with “Assertion failure in thread xxx in file rem0rec.cc line 580”

I have three MariaDB servers set up in a Galera cluster. I use one server at a time as a "primary" master (i.e., Galera is just for failover, the app doesn't actively use multiple masters). About ...
0
votes
0answers
224 views

What caused apache to crash?

I have a high load server using php/apache/APC working fine for months. In the last 2 days it has crashed midday. if I restart apache it works so the problem is probably in the apache/php/apc stack. ...
1
vote
0answers
220 views

Nvidia proprietary driver crashes CentOS 6.6 [closed]

I'm having problems using the Nvidia proprietary driver for my GeForce 9100. Xorg starts up and works fine, I am able to use everything, although when I run glxgears the system becomes unresponsive. ...
-2
votes
1answer
123 views

Apache server crashes due to bandwidth spike issue [closed]

The problem I am facing is that my Website (hosted on a dedicated VPS) was working fine for last 6 months. However from last two days, it gets huge spikes of DATA coming in and this causes server to ...
0
votes
2answers
396 views

CentOS - Nginx logs got deleted - unrecognized system restart, why? How to prevent?

I am using CentOS Linux release 7.0.1406 (Core). The last time I logged in to SSH of the server was on April 20. Everything was working fine. Today I logged in once again to check if anything new in ...
-1
votes
2answers
356 views

NAS RAID5 & Crash Scenarios

I need to validate my understanding on RAID. I'm planning to buy a Synology (or QNAP) NAS and plan to mount 4 HDD (4To each) in a RAID5 group. I’m considering several crash scenarios : one hard ...