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setup.sh
executable file
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setup.sh
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#! /bin/bash
#=========================================================================
# Copyright (C) GemStone Systems, Inc. 2010.
#
# Name - install.sh
#
# Purpose - Make sure MagLev and GemStone are setup correctly in the system.
# You only need to run this once.
#
# Be both verbose and idempotent, so we can easily diagnose
# any problems.
#
# $Id:$
#
# Description:
# Does a basic setup of memory and services for MagLev
# Setup for manual MagLev startup rather than automatic startup upon boot
# Safe to run multiple times. Only saves one prior backup repository though.
# Requires root access (using sudo) to change setings and create directories
#
# Actions:
# Add shared memory setup to /etc/sysctl.conf
# Add GemStone netldi service port to /etc/services
#=========================================================================
# Detect operating system
PLATFORM="`uname -sm | tr ' ' '-'`"
# Macs with Core i7 use the same software as older Macs
[[ $PLATFORM == "Darwin-x86_64" ]] && PLATFORM="Darwin-i386"
# We're good to go. Let user know.
machine_name="`uname -n`"
echo "[Info] Configuring $machine_name to run MagLev"
# Figure out how much total memory is installed
echo "[Info] Setting up shared memory"
#
# Ref: http://wiki.finkproject.org/index.php/Shared_Memory_Regions_on_Darwin
# Ref: http://developer.postgresql.org/pgdocs/postgres/kernel-resources.html
# Ref: http://www.idevelopment.info/data/Oracle/DBA_tips/Linux/LINUX_8.shtml
#
case "$PLATFORM" in
Linux-x86_64)
# use TotalMem: kB because Ubuntu doesn't have Mem: in Bytes
totalMemKB=`awk '/MemTotal:/{print($2);}' /proc/meminfo`
totalMem=$(($totalMemKB * 1024))
# Figure out the max shared memory segment size currently allowed
shmmax=`cat /proc/sys/kernel/shmmax`
# Figure out the max shared memory currently allowed
shmall=`cat /proc/sys/kernel/shmall`
;;
Darwin-i386)
totalMem="`sysctl hw.memsize | cut -f2 -d' '`"
# Figure out the max shared memory segment size currently allowed
shmmax="`sysctl kern.sysv.shmmax | cut -f2 -d' '`"
# Figure out the max shared memory currently allowed
shmall="`sysctl kern.sysv.shmall | cut -f2 -d' '`"
;;
SunOS-i86pc)
# TODO: figure memory needs for Solaris-x86
# Investigate project.max-shm-memory
totalMemMB="`/usr/sbin/prtconf | grep Memory | cut -f3 -d' '`"
totalMem=$(($totalMemMB * 1048576))
shmmax=$(($totalMem / 4))
shmall=$(($shmmax / 4096))
;;
*)
echo "[Error] Can't determine operating system. Check script."
exit 1
;;
esac
totalMemMB=$(($totalMem / 1048576))
shmmaxMB=$(($shmmax / 1048576))
shmallMB=$(($shmall / 256))
# Print current values
echo " Total memory available is $totalMemMB MB"
echo " Max shared memory segment size is $shmmaxMB MB"
echo " Max shared memory allowed is $shmallMB MB"
# Figure out the max shared memory segment size (shmmax) we want
# Use 75% of available memory but not more than 2GB
shmmaxNew=$(($totalMem * 3/4))
[[ $shmmaxNew -gt 2147483648 ]] && shmmaxNew=2147483648
shmmaxNewMB=$(($shmmaxNew / 1048576))
# Figure out the max shared memory allowed (shmall) we want
# The MacOSX default is 4MB, way too small
# The Linux default is 2097152 or 8GB, so we should never need this
# but things will certainly break if it's been reset too small
# so ensure it's at least big enough to hold a fullsize shared memory segment
shmallNew=$(($shmmaxNew / 4096))
[ $shmallNew -lt $shmall ] && shmallNew=$shmall
shmallNewMB=$(($shmallNew / 256))
# Increase shmmax if appropriate
if
[[ $shmmaxNew -gt $shmmax ]]
then
echo "[Info] Increasing max shared memory segment size to $shmmaxNewMB MB"
[[ $PLATFORM == "Darwin-i386" ]] && sudo sysctl -w kern.sysv.shmmax=$shmmaxNew
[[ $PLATFORM == "Linux-x86_64" ]] && sudo bash -c "echo $shmmaxNew > /proc/sys/kernel/shmmax"
[[ $PLATFORM == "SunOS-i86pc" ]] && echo "[Warning] shmmax must be set manually on Solaris-x86"
else
echo "[Info] No need to increase max shared memory segment size"
fi
# Increase shmall if appropriate
if
[[ $shmallNew -gt $shmall ]]
then
echo "[Info] Increasing max shared memory allowed to $shmallNewMB MB"
[[ $PLATFORM == "Darwin-i386" ]] && sudo sysctl -w kern.sysv.shmall=$shmallNew
[[ $PLATFORM == "Linux-x86_64" ]] && sudo bash -c "echo $shmallNew > /proc/sys/kernel/shmall"
[[ $PLATFORM == "SunOS-i86pc" ]] && echo "[Warning]shmall must be set manually on Solaris-x86"
else
echo "[Info] No need to increase max shared memory allowed"
fi
# At this point, shared memory settings contain the values we want,
# put them in sysctl.conf so they are preserved.
if
[[ -f /etc/sysctl.conf ]] &&
GREP_OPTIONS="" \grep "kern.*.shm" /etc/sysctl.conf >/dev/null
then
echo "[Info] The following shared memory settings already exist in /etc/sysctl.conf"
echo "To change them, remove the following lines from /etc/sysctl.conf and rerun this script"
grep "kern.*.shm" /etc/sysctl.conf
else
case "$PLATFORM" in
Linux-x86_64)
echo "# kernel.shm* settings added by MagLev installation" > /tmp/sysctl.conf.$$
echo "kernel.shmmax=`cat /proc/sys/kernel/shmmax`" >> /tmp/sysctl.conf.$$
echo "kernel.shmall=`cat /proc/sys/kernel/shmall`" >> /tmp/sysctl.conf.$$
;;
Darwin-i386)
# On Mac OS X Leopard, you must have all five settings in sysctl.conf
# before they will take effect.
echo "# kern.sysv.shm* settings added by MagLev installation" > /tmp/sysctl.conf.$$
sysctl kern.sysv.shmmax kern.sysv.shmall kern.sysv.shmmin kern.sysv.shmmni \
kern.sysv.shmseg | tr ":" "=" | tr -d " " >> /tmp/sysctl.conf.$$
;;
SunOS-i86pc)
# Do nothing in Solaris-x86 since /etc/sysctl.conf is ignored on Solaris 10.
# Must configure shared memory settings manually.
;;
*)
echo "[Error] Can't determine operating system. Check script."
exit 1
;;
esac
# Do nothing on Solaris-x86 since /etc/sysctl.conf is ignored on Solaris 10.
if
[[ "$PLATFORM" != "SunOS-i86pc" ]]
then
echo "[Info] Adding the following section to /etc/sysctl.conf"
cat /tmp/sysctl.conf.$$
sudo bash -c "cat /tmp/sysctl.conf.$$ >> /etc/sysctl.conf"
/bin/rm -f /tmp/sysctl.conf.$$
fi
fi
# Now setup for NetLDI in case we ever need it.
echo "[Info] Setting up GemStone netldi service port"
if
GREP_OPTIONS="" \grep "^gs64ldi" /etc/services >/dev/null
then
echo "[Info] GemStone netldi service port is already set in /etc/services"
echo "To change it, remove the following line from /etc/services and rerun this script"
grep "^gs64ldi" /etc/services
else
echo '[Info] Adding "gs64ldi 50378/tcp" to /etc/services'
sudo bash -c 'echo "gs64ldi 50378/tcp # Gemstone netldi" >> /etc/services'
fi