如何在linux服务器上运行弹性搜索
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我通过Putty客户端使用ssh访问我的服务器但是当我的putty变为不活动或我关闭它时弹性搜索停止.我想让它一直运行.我怎样才能做到这一点？
解决方法:
您遇到的问题是elasticsearch不是作为守护程序(服务器)启动的.相反,你就像正常程序一样启动它.因此,当您停止SSH会话时,程序将停止运行.
为了在服务器本身重新启动时启动elasticsearch,您需要将elasticsearch添加到服务器启动.
您没有说明您在服务器上运行的是哪个操作系统.假设它是Debian(例如Ubuntu)系统),您必须创建一个可以放在目录/etc/init.d中的文件.
我从下面的自己的服务器复制了该文件.你可能已经拥有它了.
查找文件/etc/init.d/elasticsearch
$more /etc/init.d/elasticsearch
获得文件后,即可运行该命令
sudo update-rc.d elasticsearch defaults 95 10
这将“安装”elasticsearch作为服务.
要启动和停止服务,您可以运行命令：
sudo service elasticsearch start
sudo service elasticsearch stop
如果您还没有该文件,则该文件位于下方.
#!/bin/sh
#
# /etc/init.d/elasticsearch -- startup script for Elasticsearch
#
# Written by Miquel van Smoorenburg <miquels@cistron.nl>.
# Modified for Debian GNU/Linux by Ian Murdock <imurdock@gnu.ai.mit.edu>.
# Modified for Tomcat by Stefan Gybas <sgybas@debian.org>.
# Modified for Tomcat6 by Thierry Carrez <thierry.carrez@ubuntu.com>.
# Additional improvements by Jason Brittain <jason.brittain@mulesoft.com>.
# Modified by Nicolas Huray for Elasticsearch <nicolas.huray@gmail.com>.
#
### BEGIN INIT INFO
# Provides: elasticsearch
# Required-Start: $network $remote_fs $named
# Required-Stop: $network $remote_fs $named
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Starts elasticsearch
# Description: Starts elasticsearch using start-stop-daemon
### END INIT INFO
PATH=/bin:/usr/bin:/sbin:/usr/sbin
NAME=elasticsearch
DESC="Elasticsearch Server"
DEFAULT=/etc/default/$NAME
if [ `id -u` -ne 0 ]; then
echo "You need root privileges to run this script"
exit 1
fi
. /lib/lsb/init-functions
if [ -r /etc/default/rcS ]; then
. /etc/default/rcS
fi
# The following variables can be overwritten in $DEFAULT
# Run Elasticsearch as this user ID and group ID
ES_USER=elasticsearch
ES_GROUP=elasticsearch
# The first existing directory is used for JAVA_HOME (if JAVA_HOME is not defined in $DEFAULT)
JDK_DIRS="/usr/lib/jvm/java-8-oracle/ /usr/lib/jvm/j2sdk1.8-oracle/ /usr/lib/jvm/jdk-7-oracle-x64 /usr/lib/jvm/java-7-oracle /usr/lib/jvm/j2sdk1.7-oracle/ /usr/lib/jvm/jav
a-7-openjdk /usr/lib/jvm/java-7-openjdk-amd64/ /usr/lib/jvm/java-7-openjdk-armhf /usr/lib/jvm/java-7-openjdk-i386/ /usr/lib/jvm/default-java"
# Look for the right JVM to use
for jdir in $JDK_DIRS; do
if [ -r "$jdir/bin/java" -a -z "${JAVA_HOME}" ]; then
JAVA_HOME="$jdir"
fi
done
export JAVA_HOME
# Directory where the Elasticsearch binary distribution resides
ES_HOME=/usr/share/$NAME
# Heap size defaults to 256m min, 1g max
# Set ES_HEAP_SIZE to 50% of available RAM, but no more than 31g
#ES_HEAP_SIZE=2g
# Heap new generation
#ES_HEAP_NEWSIZE=
# max direct memory
#ES_DIRECT_SIZE=
# Additional Java OPTS
#ES_JAVA_OPTS=
# Maximum number of open files
MAX_OPEN_FILES=65535
# Maximum amount of locked memory
#MAX_LOCKED_MEMORY=
# Elasticsearch log directory
LOG_DIR=/var/log/$NAME
# Elasticsearch data directory
DATA_DIR=/var/lib/$NAME
# Elasticsearch work directory
WORK_DIR=/tmp/$NAME
# Elasticsearch configuration directory
CONF_DIR=/etc/$NAME
# Elasticsearch configuration file (elasticsearch.yml)
CONF_FILE=$CONF_DIR/elasticsearch.yml
# Maximum number of VMA (Virtual Memory Areas) a process can own
MAX_MAP_COUNT=262144
# End of variables that can be overwritten in $DEFAULT
# overwrite settings from default file
if [ -f "$DEFAULT" ]; then
. "$DEFAULT"
fi
# Define other required variables
PID_FILE=/var/run/$NAME.pid
DAEMON=$ES_HOME/bin/elasticsearch
DAEMON_OPTS="-d -p $PID_FILE --default.config=$CONF_FILE --default.path.home=$ES_HOME --default.path.logs=$LOG_DIR --default.path.data=$DATA_DIR --default.path.work=$WORK_
DIR --default.path.conf=$CONF_DIR"
export ES_HEAP_SIZE
export ES_HEAP_NEWSIZE
export ES_DIRECT_SIZE
export ES_JAVA_OPTS
# Check DAEMON exists
test -x $DAEMON || exit 0
checkJava() {
if [ -x "$JAVA_HOME/bin/java" ]; then
JAVA="$JAVA_HOME/bin/java"
else
JAVA=`which java`
fi
if [ ! -x "$JAVA" ]; then
echo "Could not find any executable java binary. Please install java in your PATH or set JAVA_HOME"
exit 1
fi
}
case "$1" in
start)
checkJava
if [ -n "$MAX_LOCKED_MEMORY" -a -z "$ES_HEAP_SIZE" ]; then
log_failure_msg "MAX_LOCKED_MEMORY is set - ES_HEAP_SIZE must also be set"
exit 1
fi
log_daemon_msg "Starting $DESC"
pid=`pidofproc -p $PID_FILE elasticsearch`
if [ -n "$pid" ] ; then
log_begin_msg "Already running."
log_end_msg 0
exit 0
fi
# Prepare environment
mkdir -p "$LOG_DIR" "$DATA_DIR" "$WORK_DIR" && chown "$ES_USER":"$ES_GROUP" "$LOG_DIR" "$DATA_DIR" "$WORK_DIR"
touch "$PID_FILE" && chown "$ES_USER":"$ES_GROUP" "$PID_FILE"
if [ -n "$MAX_OPEN_FILES" ]; then
ulimit -n $MAX_OPEN_FILES
fi
if [ -n "$MAX_LOCKED_MEMORY" ]; then
ulimit -l $MAX_LOCKED_MEMORY
fi
if [ -n "$MAX_MAP_COUNT" -a -f /proc/sys/vm/max_map_count ]; then
sysctl -q -w vm.max_map_count=$MAX_MAP_COUNT
fi
# Start Daemon
start-stop-daemon --start -b --user "$ES_USER" -c "$ES_USER" --pidfile "$PID_FILE" --exec $DAEMON -- $DAEMON_OPTS
return=$?
if [ $return -eq 0 ]
then
i=0
timeout=10
# Wait for the process to be properly started before exiting
until { cat "$PID_FILE" | xargs kill -0; } >/dev/null 2>&1
do
sleep 1
i=$(($i + 1))
[ $i -gt $timeout ] && log_end_msg 1
done
else
log_end_msg $return
fi
;;
stop)
log_daemon_msg "Stopping $DESC"
if [ -f "$PID_FILE" ]; then
start-stop-daemon --stop --pidfile "$PID_FILE" \
--user "$ES_USER" \
--retry=TERM/20/KILL/5 >/dev/null
if [ $? -eq 1 ]; then
log_progress_msg "$DESC is not running but pid file exists, cleaning up"
elif [ $? -eq 3 ]; then
PID="`cat $PID_FILE`"
log_failure_msg "Failed to stop $DESC (pid $PID)"
exit 1
fi
rm -f "$PID_FILE"
else
log_progress_msg "(not running)"
fi
log_end_msg 0
;;
status)
status_of_proc -p $PID_FILE elasticsearch elasticsearch && exit 0 || exit $?
;;
restart|force-reload)
if [ -f "$PID_FILE" ]; then
$0 stop
sleep 1
fi
$0 start
;;
*)
log_success_msg "Usage: $0 {start|stop|restart|force-reload|status}"
exit 1
;;
esac
exit 0
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