Server Rebooting frequently


 
Thread Tools Search this Thread
Operating Systems Solaris Server Rebooting frequently
# 1  
Old 06-16-2011
Server Rebooting frequently

Deall All,

I have facing some problem. I have a Sun 4500 Server at the customer place. Now the server is not booting mean's once the server is coming up it is automatically rebooting. As this is the critical server for the customer that is use for production .


Can this be solved by running FSCK on ROOT. Please send me the process of running FSCK,if bootblk is corupted can we repair it.

Also how to copy bootblk form CD


Please help.... Thank you.
# 2  
Old 06-16-2011
without knowning the problem there won't be a solution... use a serial line to the server and catch the output from boot process. would be good to start from ok> prompt with a "boot -v" for more output...
# 3  
Old 06-16-2011
In addition to what DukeNuke2 said, I would also try to bring it up to single user mode
Code:
boot -v -m milestone=single-user

or
Code:
boot -v -s

# 4  
Old 06-16-2011
i agree with DukeNuke2, we need a console output. Because we don't know why your server is rebooting/crashing...
# 5  
Old 06-17-2011
Dear DukeNuke/fpmurphy/beta17

Thank you all for your valuable output. When i give hard reboot once the screen is available it throws some errors like

Code:
"mount:WARNING: line 'i' in vfstab has too many entries"
 
The system is coming up,please wait.......
Hostname:pavana

Now the problem starts:
Code:
WARNING: unable to repair one or more File System. Run FSCK manually.
 
Type control-d to proceed with normal startup
(To give root password for system maintance)

After that when i tried with Ctrl+d option,it enters into gui mode,b4 gui mode coming properly,it syncing the File System and after that rebooting and coming bck to previous state.

When i tried with the root password,it enters into the maintance mode.

These are the steps I followed there.

-> I boot the system into single user mode by CD

-> Running FSCK on All file system, I even run FSCK on alternative superblok by hoping that it may be corrupted.

-> after that i rebooted the server but the problem still persist.

I am not able to take console or eeven capture the logs..

Please suggest me.............

Last edited by DukeNuke2; 06-17-2011 at 11:59 AM..
# 6  
Old 06-17-2011
Sounds like an entry in /etc/vsftab is incorrect. Did you or somebody else edit this file recently?
# 7  
Old 06-17-2011
as suggested... you will need a serial line and forget about the display. if you're not able to boot the system to single user mode and check the /etc/vfstab you might need a boot cd or a bootserver to boot your system from remote media and then edit your vfstab on the internal drive.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Red Hat

Server health Checks pre & post Rebooting

Hi, Earlier we used to reboot servers based on adhoc request, never checked anything on it pre-reboot., But now i need to reboot regularly but most of the info is not available, I need to know want to make sure that server to be rebooted without any issues, so I want to do few prechecks which will... (5 Replies)
Discussion started by: nanz143
5 Replies

2. Red Hat

Server rebooting unexpectedly

hi, I have been working on Solaris am very new to linux. My concern is as it goes....our server is getting rebooted automatically and I am not able to understand anything from the var log messages. Could anybody help me out in troubleshooting the issue. 2.6.18-128.el5 #1 x86_64 GNU/Linux is... (1 Reply)
Discussion started by: EmbedUX
1 Replies

3. Solaris

How to auto start MySQL server on Opensolaris after rebooting the machine?

Hi, In Linux, I will do it by editing the /etc/rc.d/rc.local . However, I can't find a rc.local file in Opensolaris. So, how can I do it in Opensolaris? I am new to opensolaris, so please teach me step by step. Thanks in advance. (4 Replies)
Discussion started by: AlexCheung
4 Replies

4. Solaris

problem in rebooting solaris server

Hi, While we rebooting solaris server ,the system going to Maintenance mode instead of login console. even we are not able to run fsck command . Thanks in advanced for help. log attached FYI Executing last command: boot Boot device: /pci@83,4000/FJSV,ulsa@2,1/disk@0,0 File and args:... (3 Replies)
Discussion started by: helplineinc
3 Replies

5. Shell Programming and Scripting

Not able to 'su' to other user when rebooting the server

Hi All, I have created one script with starting letter 'S' (Example: Start) and stored in the path "/etc/rc.d/". This script was called automatically when we reboot the server. In this script i am using 'su' command to switch other user but it is not working, it giving some error. su... (2 Replies)
Discussion started by: Selva_Kumar
2 Replies

6. Shell Programming and Scripting

How to call the ksh script when rebooting the server

Hi all, Can any one help me....... I just want to run one shell script whenever i am rebooting the server. Is there any easy way to do that???? Thanks, selva (7 Replies)
Discussion started by: Selva_Kumar
7 Replies

7. HP-UX

Server Hanging frequently - urgent help required

hi, I am facing a sever problem in mu HO-UX 11.11.0 Server which is getting hanged for last 3/4 days. Its giveing error insufficient memory. Earlier this problem was not there. We are using oour ERP & informix on the same. There no heavy & sudden increase of data. When I checked the... (3 Replies)
Discussion started by: micku_100
3 Replies

8. UNIX for Dummies Questions & Answers

Server rebooting frequently

O/P of the uname -a Server Server 4.0 3.0 3516 Pentium IV(TM)-ISA/PCI Server is getting rebooted frequetly... I don't know what is the problem in server ... Any help why the server is getting rebooted frequetly. Can i check what is the problem like in log files (5 Replies)
Discussion started by: srikanthus2002
5 Replies

9. UNIX for Advanced & Expert Users

Solaris 9 server hangs, when rebooting

Hi, We have a SunFire V880, hooked up with 2 T3 arrays. When ever we issue a reboot command on the system, it hangs at the same place right where it says syncing file systems done. To bring it back we shutdown power and it comes clean. By the way init 6 command works fine. Has anyone come... (3 Replies)
Discussion started by: smohd
3 Replies

10. UNIX for Advanced & Expert Users

Server name + IP address removed from host table after rebooting

Hi, I have a problem with a Unix server (SCO Unix version 3.2). If this server is rebooted the own server name and it's IP address is removed from the host table. How is this possible? How can i solve this problem? (3 Replies)
Discussion started by: FIRE
3 Replies
Login or Register to Ask a Question