On installation of my OEL (Oracle Enterprise Linux), I've made a mistake, and set the date and time wrong. It's pointing to a date far in the future. So I change the date (and time), all looks OK. But when I boot, all is back to the same date (in 2015). I'm running this OS in VMware, I don't know if this issue relates to VM or not.
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I need to write a small application which needs to detect if the system time is changed by an another application/user and perform some action as soon as it is detected (maybe log the data that time has changed, along with info about which application/user changed it).
How can this be achieved?
I have good programming experiences in shell script, c and beginner level in python.
I don't need to know when it was changed, just need to know who/what changed it.
The system uses NTP to sync the time, but it is also possible for anyone/any application to change the time(for eg: using the simple "date" command as well).
I am using the default CVS available in Fedora 9. I initiated the CVS server by
cvs -d /usr/local/cvsproj init
To check-in and check-out the following exports commands are used
export CVS_RSH=ssh
export CVSROOT=:ext:swathi@SERVER:/usr/local/cvsproj
I shall explain problem by taking an example. A project was checked in long before (for example the checkin date is 25 Feb 2010). And today (i.e. 21 June 2011) I checked out the project from the repository. After checkout, the date of the project in the repository is changed from 25 Feb 2010 to 21 June 2011. This date is set to all the subfolders in that project. But the files in the project retains the checking date i.e. 25 Feb 2010. Why the check-in dates are getting updated/changed to the system time after doing check-out.
logging in a server through putty in the same network when i executed last command its showing system ip logged in time and logged out time the output as followsthis is my system
oot pts1 xx.xx.xx day month date time in time out timeand similarly am geeting other than this likeroot :0day month date time still logged in this is from more than 3 days its logged in
I have been able to find enough information that I need to enable 'time-udp' in /etc/xinetd.d/ But there isn't an entry for time-udp. How do I enable time-udp (Time of Day server) on a Red Hat system? It's RHEL 5.6 64bit.
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On GMT I was waking on LAN at 23:30, all was working fine then we changed to BST. What I usually do is leave the BIOS clock on GMT and change the Wake on Alarm to 22:30. I did this, shut down Ubuntu fine, but its not waking up at all at 22:30, or any other time I set the WOA to. I had this problem a few years ago on an old ASrock mobo and cant remember how I sorted it - maybe by blanking the bios, cant remember.
For the second time in a week, I have set up an unmanaged CentOS 5.5 Storm Server at StormOnDemand, only to discover a ton of unauthorized changes to binaries (updated file checksums and sizes) on the server shortly thereafter.The time stamps do NOT change.If the time stamps did change, I would be hunting down ahat was doing some auto-updates. But the time stamps are not changing.This leads me to believe that either these servers are suffering from:1. A virus or hacker is compromising the box.2. system corruption.3. Something else? To eliminate the possibility of number 1, I toasted the first server and started over with a new server and enabled their firewall from the start to only allow access for two IPs via SSH... my IP and my biz partner's.
Then, one of the first things we installed was a system we created that maintains a snapshot of most directories on the system so that it can be used to watch the live directories for changes. At 4:07am (server time) this morning, we received notice from this system that a massive number of files had changed in these directories. Again, no file time stamps changed.So, my question is this... is there any legitimate reason in a fairly standard CentOS 5.5 install that would cause so many files to change?
I'm having an issue with dual networking on RHEL 5. My initial question is can the order the ethx (0,1) devices are brought up be changed at boot time, so I could bring up eth1 before eth0?
Some background: eth0 is DHCP'd and using DNS, basically this is my primary network. eth1 is an isolated subnet, with a manually configured IP which has no connection to eth0 or the outside world. When I bring up networking it first brings up eth0 and then eth1, what happens is eth1 becomes the 'primary' network of the host and I lose my connection to DNS/NFS/NIS and the outside world.
If I login and manually bring up eth1 first, then eth0 everyone is happy and connections work. So, I'm looking for a solution to either bring up eth1 before eth0 or somehow make eth0 my primary IP and not have it be clobbered by eth1.
When booting Fedora 11, my system hangs for a very long time on starting udev. Sometimes I get an I/O error. However, my hardware is fine. I do eventually get in to the system.
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I can set it right by coping the hareware time to system time with this command:
Code:
hwclock --hctosys
I want to run a crontab to have that command run every minute. But it don't seem to run.
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I'm just wondering what the limits for time are. I have a program that always takes exactly 20 ms, so I assume this is the lowest it can measure, but I want to see if there's some sort of documentation of this.
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View 1 Replies View RelatedI want to give my users option of logging to the system. They should have posibillity for choosing option betweend logging to the system with their default password or one-time password OTPW. I installed OTPW in my Debian. Here is my /etc/pam.d/sshd file:
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I have several file servers in our offices and I am relatively new to Ubuntu / Linux. I get notices that there are updates for the server software from time to time. Is it typical to update everything when available or should I follow "If it ain't broke, don't fix it..." mentality?I would hate for everything to be working fine and then have an update throw me a curve.
View 9 Replies View RelatedI am hosting two Virtual Servers both running Centos 5.3 on a host machine also running the same OS. The VM software in use is Xen, as supplied with the OS.The host machine's time and date is fine, however both Virtual Servers are running ahead of real time consitantly.Running /etc/init.d/ntpd restart will resolve the issue however one of these is running MailScanner and when the time suddenly goes backwards, sometimes by as much as an hour, it stops working properly.
View 1 Replies View RelatedI have a set of machines on a disconnected network. Periodically, one of the machines connects to the internet and synchronizes its time with a time server that is not known until the connection is established. (The machine queries a central command server for the address of the time server it should synchronize to.)
I then use a custom tool to do some calculations to call adjtimex() and adjust the clock so that it runs fairly accurately.
I know ntpd is supposed to be able to handle disconnected networks but I thought you had to preconfigure the servers in the configuration file.
My intent is to run ntpd on this machine (without configured "server"s) so that it can serve time to the internal network. (Periodic synchronization using ntpdate from the internal machine to the bridge machine.)
The problem: ntpd wants to fuss with the values I set using adjtimex(). I want it to quit thinking it needs to adjust the clock and just serve time to the internal network. (Maybe I have a GPS time source hooked directly to the machine!)
I want to synchronize my time to a time server in Singapore. How can i do so with the Time and Date in System - Administration - Time and Date?
View 4 Replies View RelatedIs there a way to get the current time as provided from NTP (not the currently set time on the server)?
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We have 2 applications set as S96 and S98 at rc3.d and rc5.d simultaneously. Both applications create a system V shared memory segment by calling shmget.If the system boot at runlevel 5, both applications can obtain their shared memory segment id correctly, i.e. 98305 and 131074 individually. While there is a root owned segment id 32768 takes first seat on the list. This is the id list:
root, 32768
S96_app, 98305
S98_app, 131074
[code]....
I have an NFS server on Windose Server 2003. I use it to back my Linux/Solaris databases up to. I mounted the NFS share on the Linux box. I was testing the permissions to it, and accidentally did a chown sybase:sybase /OLBackupOLBackup is the root directory of the NFS share. When I did the chown command, it changed the permissions on the share. Now it seems that linux is controlling the permissions. In windose I cant add users/groups. How can I remove Linux from owning the permissions. Im not sure if this is a windose issue or a linux issue, but figured I would start asking here first.
View 1 Replies View RelatedSomeone in my dept rather stupidly changed an IP of a webserver, and ever since we changed it back we cannot mount 3 NFS drives.
The Error
Code:
HTTP1:/etc# /etc/init.d/networking restart
Reconfiguring network interfaces...if-up.d/mountnfs[eth0]: lock /var/run/network/mountnfs exist, not mounting
if-up.d/mountnfs[eth1]: lock /var/run/network/mountnfs exist, not mounting
done.
I have removed that lock file and tried a
Code:
mount -a
but it just hangs?
The FSTAB hasn't changed at all, and the other web servers can mount to the NFS share fine. I have tried alot, removing the lock file and rebooting etc but no luck. Debian Lenny.
I am trying to install OpenSwan VPN but get the following [FAILED] errors. I also changed the redirects but it still reports them as failed?Quote:
[root@localhost /]# /sbin/sysctl -w net.ipv4.conf.all.accept_redirects=0
net.ipv4.conf.all.accept_redirects = 0
[root@localhost /]# /sbin/sysctl -w net.ipv4.conf.all.send_redirects=0
net.ipv4.conf.all.send_redirects = 0
[root@localhost /]# ipsec verify
[Code]...
I use a PHP IDE that has no built-in ability to upload a project to a site. So, I'm looking for common easy to use tool for Linux that would able to upload modified documents to the server instead of uploading of the whole site. I also accept shell scripts that would be able to do this.
View 1 Replies View RelatedI just tried changed the port that apache runs on from 80 to 8080 (I need port 80 for a difference service so I am changing the apache port). After doing this I load 127.0.0.1:8080 in a browser and get a 404 error generated by apache, if I change it back to 80 it works fine.
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