linux shell脚本自动化搭建redis三主机三主三从6节点集群

#!/bin/bash
echo "本地yum源是否配置完毕，是请忽略，否请按CTRL+C退出！"
sleep 3
echo "自动化安装redis-5.0.9版本3台服务器集群："
read -p "请根据实际数据挂载盘输入redis-cluster安装的主目录(譬如/wls或是/data)：" maindir
echo "---使用3台机6节点的交叉部署模式，3台机均需执行该脚本---"
if [ -f /root/redis-5.0.9.tar.gz ];then
echo "系统内核参数优化！"

echo never > /sys/kernel/mm/transparent_hugepage/enabled

echo "net.core.somaxconn=551" >> /etc/sysctl.conf

echo "vm.overcommit_memory=1" >> /etc/sysctl.conf

sysctl -p
dir=$maindir/redis-cluster

mkdir -p $dir/bin
yum -y install zlib-devel openssl-devel gcc-c++

echo "redis编译安装！"

cd /root

tar xf redis-5.0.9.tar.gz

cd redis-5.0.9

make

cd src

cp redis-server redis-cli redis-check-aof redis-check-rdb redis-sentinel redis-benchmark $dir/bin

echo "如有异常，请按CTRL+C退出！如正常，将继续执行下一步！"

sleep 2
ip addr

echo "redis5集群配置："

read -p "请输入本地内网IP地址(参考上面输出信息,非127.0.0.1)：" ip

read -p "请输入节点端口1(3台机一致)：" port1

read -p "请输入节点端口2(3台机一致)：" port2

read -p "请输入加密密码(3台机一致)：" password

echo "redis节点端口为：${port1}和${port2}"

mkdir $dir/{$port1,$port2}
cat >$dir/$port1/redis.conf <<EOF

port $port1

daemonize yes

bind $ip 127.0.0.1

dir $dir/$port1

pidfile $dir/$port1/redis.pid

logfile $dir/$port1/redis.log

cluster-enabled yes

cluster-config-file nodes.conf

cluster-node-timeout 15000

appendonly yes

appendfsync everysec

masterauth $password

requirepass $password

EOF
cat >$dir/$port2/redis.conf <<EOF

port $port2

daemonize yes

bind $ip 127.0.0.1

dir $dir/$port2

pidfile $dir/$port2/redis.pid

logfile $dir/$port2/redis.log

cluster-enabled yes

cluster-config-file nodes.conf

cluster-node-timeout 15000

appendonly yes

appendfsync everysec

masterauth $password

requirepass $password

EOF
echo "如有异常，请按CTRL+C退出！如正常，将继续执行下一步！"

sleep 2
$dir/bin/redis-server $dir/$port1/redis.conf &

$dir/bin/redis-server $dir/$port2/redis.conf &

sleep 2

ps -ef|grep redis
read -p "3台机6个redis节点是否已经全部安装并启动(是请输入"y"或者"Y",否请输入"n"或者"N")：" answer

if [ "$answer" = y -o "$answer" = Y ];then

read -p "是否创建redis集群？只需要在3台机中的任1台执行即可(是请输入"y"或者"Y",否请输入"n"或者"N")：" answer1

if [ "$answer1" = y -o "$answer1" = Y ];then

read -p "请输入集群第1台机的IP：" ip1

read -p "请输入集群第2台机的IP：" ip2

read -p "请输入集群第3台机的IP：" ip3

echo "以下若出现交互，请输入yes并回车"

sleep 2

$maindir/redis-cluster/bin/redis-cli -a $password --cluster create $ip1:$port1 $ip2:$port1 $ip3:$port1 --cluster-replicas 0

string1=$maindir/redis-cluster/bin/redis-cli -a $password --cluster check $ip1:$port1|grep " $ip1:$port1" 2&gt;/dev/null|grep -v Performing |awk -F ' ' '{print $2}'

string2=$maindir/redis-cluster/bin/redis-cli -a $password --cluster check $ip1:$port1|grep " $ip2:$port1" 2&gt;/dev/null|grep -v Performing |awk -F ' ' '{print $2}'

string3=$maindir/redis-cluster/bin/redis-cli -a $password --cluster check $ip1:$port1|grep " $ip3:$port1" 2&gt;/dev/null|grep -v Performing |awk -F ' ' '{print $2}'

$maindir/redis-cluster/bin/redis-cli -a $password --cluster add-node $ip2:$port2 $ip1:$port1 --cluster-slave --cluster-master-id $string1

$maindir/redis-cluster/bin/redis-cli -a $password --cluster add-node $ip3:$port2 $ip2:$port1 --cluster-slave --cluster-master-id $string2

$maindir/redis-cluster/bin/redis-cli -a $password --cluster add-node $ip1:$port2 $ip3:$port1 --cluster-slave --cluster-master-id $string3

echo "以下为集群创建后的最终状态信息："

$maindir/redis-cluster/bin/redis-cli -a $password --cluster check $ip1:$port1

echo "###已完成3台机6个redis节点的集群模式部署###"

echo "注意：如果6个节点交叉分布在3台机（主主和主从节点均不在同1台出现），这样的话，挂掉其中任何1台服务器将不会影响集群使用，但是需要在机器恢复后，须把主节点还原回去，办法就是：停止新的主节点，此时新从节点会变成原先旧主节点，再开启刚刚关闭的节点，让其变成从节点。"

else

echo "退出集群创建！"

fi

else

echo "请继续安装redis节点并启动！"

exit 0

fi
else

echo "请把相应的包上传到/root目录，再进行下一步！"

exit 0

fi