daylight savings time DOES NOT change the clock running in UTC, which is how the internal clock keeps time. It just changes how the values provided by the clock get translated into human readable form.
This affects log timestamps, etc. It also means that cron entries may run twice - this happens going from DST to standard time. Or may run not at all - this happens going to DST from standard time.
So for example, if you want to change to DST, and you do it on a Sunday at 2:00am
you can check for problem cron entries maybe this way:
Hyphens or other special syntax may cause an early morning job to run with no "2" in the hours field. So the above may need changing. For Fall you need to look for "1"
Hi,
I want to synchronize time on several AIX servers - I don't want to set very precise time value, but I want all the servers to have same time value.
How do I do that ?
thanks
Vilius (2 Replies)
I am trying to write a script to change passwords for the same user on multiple servers.
My environment runs purely ssh / scp not rsh / rcp and therefore coping using rcp is not an option.
I have been playing with expect to perform tasks but think there must be a better way.
Has anyone got... (7 Replies)
Hi,
I am very bad at scripting. I need help from scripting experts...
I need to change password of around 100 linux remote servers. I have been given a script for changing the password that automates the task. however I do not understand the usage and meaning of the script, the script is an... (0 Replies)
Hello Folks
Scenario :
I have a linux box (expect tool installed) which connects to 1000+ other boxes (either Solaris or AIX or Linux ) with a specific id and password using SSH.
I now wish to write a script (Shell and/or expect and/or Python) which will change this existing password to a... (1 Reply)
Hi,
I need to Change passwd for bulk servers using SSH script.
I have one server, from which i can reach all the servers without password via SSH.
There is some expect script, from which i can achieve it.
Can any one help me out here.
Thanks in advance.
Vicky (1 Reply)
I have the following requirement;
I need to compare set of files in 2 different servers A and B.
Both have same sets of files and directory structure
First I need to move the files from Server A to server B
Compare the corresponding file in B server and see if it has modified (not... (1 Reply)
All,
I re-wrote our scripts to speed-up the compiling time, original time is about 1hrs. now dispatch the sub task to different servers through SSH. Now my question is that:
If dispatch these tasks into the current server, there is no errors during compiling process.
If dispatch these tasks... (0 Replies)
Hello,
I have 3 AIX 6.1 machines running INFORMIX 11.7 database engine.
One of these servers is the database server and the other 2 servers are connecting to it.
I am doing a test to determine the time of query execution between these servers and i see that in specific times one of these... (12 Replies)
Hey Gurus,
I have this requirement to change the password for other servers remotely from one server. So, I installed public keys on all servers and wrote the following script to do the job. Something appears to be wrong with my loop, as it only changes one server and ignores the rest. I'm... (24 Replies)
Discussion started by: Hiroshi
24 Replies
LEARN ABOUT OSF1
ntp.drift
ntp.drift(4) Kernel Interfaces Manual ntp.drift(4)NAME
ntp.drift - Network Time Protocol (NTP) drift file
DESCRIPTION
When the NTP daemon (xntpd) is first started, it computes the error in the intrinsic frequency of the clock on the computer it is running
on. This process usually takes about a day or two after the daemon is started to compute a good estimate of this (and it needs a good
estimate to synchronize closely to its server). Once the initial value is computed, it will change only by relatively small amounts during
the course of continued operation.
The driftfile declaration should always be included in the ntp.conf file. This provides xntpd with complete path name to a file in which
it can store the current value of the frequency error. That way, if the daemon is stopped and restarted, it can reinitialize itself to the
previous estimate without spending time recomputing the frequency estimate.
The ntp.drift file contains one line with the following format: freq_offset flag Specifies the nominal frequency offset. DO NOT modify
this field. Specifies the method used to improve system clock accuracy. Specifies that xntpd runs a Phase-Locked Loop (PLL) algorithm to
keep synchronized with other hosts. This is the default. Specifies the use of the PLL algorithm in the kernel. This requires the
NTP_TIME kernel option. After the option is configured in the kernel, edit the ntp.drift file and change the flag value to 1.
See System Administration for information on the NTP_TIME kernel option.
FILES
Conventional name of the drift file
RELATED INFORMATION
Commands: ntpdate(8), ntpq(8), xntpd(8), xntpdc(8)
Files: ntp.conf(4)
Network Administration, System Administration delim off
ntp.drift(4)