Saturday, January 17, 2004
Friday, January 16, 2004
Wednesday, January 14, 2004
Enable cores in Linux
================
Sometimes you may have noticed "core" files not getting created in Linux boxes when tux servers crash.
Do the following to enable cores in your Linux environment.
ulimit -c unlimited
And restart your servers.
================
Sometimes you may have noticed "core" files not getting created in Linux boxes when tux servers crash.
Do the following to enable cores in your Linux environment.
ulimit -c unlimited
And restart your servers.
Increase The IPC parameters in Linux
------------------------------------
edit the file /etc/sysctl.conf and load them dynamically into
your System by doing
sysctl -p /etc/sysctl.conf
The following prints the current values.
sysctl -a
The values from My Box are,
# Disables packet forwarding
net.ipv4.ip_forward = 0
# Enables source route verification
net.ipv4.conf.default.rp_filter = 1
# Disables the magic-sysrq key
kernel.sysrq = 0
#Added By Nambi For tuxedo tuneup
kernel.msgmni = 3000
# msgmap=msgmnb
kernel.msgmnb = 18000
kernel.shmmax=2147483647
kernel.shmall=268435456
# semmnu semume
# semmsl semmns semopm semmni
kernel.sem = 250 32000 2001 128
# Max FD Limit Default 8192
fs.file-max = 65535
------------------------------------
edit the file /etc/sysctl.conf and load them dynamically into
your System by doing
sysctl -p /etc/sysctl.conf
The following prints the current values.
sysctl -a
The values from My Box are,
# Disables packet forwarding
net.ipv4.ip_forward = 0
# Enables source route verification
net.ipv4.conf.default.rp_filter = 1
# Disables the magic-sysrq key
kernel.sysrq = 0
#Added By Nambi For tuxedo tuneup
kernel.msgmni = 3000
# msgmap=msgmnb
kernel.msgmnb = 18000
kernel.shmmax=2147483647
kernel.shmall=268435456
# semmnu semume
# semmsl semmns semopm semmni
kernel.sem = 250 32000 2001 128
# Max FD Limit Default 8192
fs.file-max = 65535
Ever wondered how to look at the packets that are transmitted in the network by the computer.
Solaris has a utility called "snoop"
Linux equivalent is "tcpdump"
Both of them can be run only by the root user.
Also they are same only in the basic functionality.
Solaris has a utility called "snoop"
Linux equivalent is "tcpdump"
Both of them can be run only by the root user.
Also they are same only in the basic functionality.
Tuesday, January 13, 2004
Fantastic Articles about INDIA. Site needs registration, but it is FREE! :)
BusinessWeek Online: BW Magazine
BusinessWeek Online: BW Magazine
