数据盘升级步骤:
1 es数据迁移
2 磁盘升级
3 数据迁回

一、ucloud磁盘容量扩容
1.1、ES迁移数据
curl -X PUT "10.19.86.53:9200/_cluster/settings" -H 'Content-Type: application/json' -d' { "transient" : { "cluster.routing.allocation.exclude._ip" : "10.19.153.121" } }'
10.19.86.53集群主节点 10.19.153.121迁移数据的节点
ES数据迁回（暂停迁移）
curl -X PUT "10.19.86.53:9200/_cluster/settings" -H 'Content-Type: application/json' -d' { "transient" : { "cluster.routing.allocation.exclude._ip" : "" } }'
数据迁移完后下掉节点:
jps|grep -i elasticsearch
1300 Elasticsearch
kill -SIGTERM 1300

1.2.1、磁盘升级
//针对ext4文件格式的操作系统（如CentOS6）：//
umount /dev/vdb
e2fsck -f /dev/vdb
resize2fs /dev/vdb
mount /dev/vdb /data

//针对xfs文件格式的操作系统（如CentOS7）//
umount /dev/vdb
xfs_repair /dev/vdb
mount /dev/vdb /data
xfs_growfs /data

1.2.2、更换磁盘
ansible 10.9.160.129 -m script -a 'umount.sh' -k
卸载磁盘脚本：
more umount.sh 

#!/bin/bash
echo "关闭所有服务"
supervisorctl stop all
jps|grep -i elasticsearch |awk -F " " '{print $1}'|xargs kill -SIGTERM
echo "备份data"
cp /data/* /mnt/ -R
echo "卸载磁盘"
lsof |grep /data|awk -F " " '{print $2}'|xargs kill -9
umount /data

云控制台卸载磁盘购买新的磁盘
ansible 10.9.160.129 -m script -a 'mount.sh' -k
挂载磁盘脚本：
more mount.sh 

#!/bin/bash
sed -i '/data/'d /etc/fstab
echo "初始化磁盘"
mkfs.xfs /dev/vdb
echo "挂载磁盘"
mount /dev/vdb /data
systemctl daemon-reload
echo "开机自动挂载"
UUID=$(blkid |grep vdb|awk -F ' ' '{print $2}')
echo "$UUID /data xfs defaults 0 0" >> /etc/fstab
echo "迁回配置授权es启动用户"
cp /mnt/* /data/ -R
chown -R elsearch:elsearch /data/e*

1.3、数据迁回
集群老机器恢复数据:
3.1、启动服务
su elsearch -c "/data/elasticsearch/bin/elasticsearch -d"
3.2、数据迁回
curl -X PUT "10.19.153.121:9200/_cluster/settings" -H 'Content-Type: application/json' -d' { "transient" : { "cluster.routing.allocation.exclude._ip" : "" } }'

查看文档：
https://yq.aliyun.com/articles/672521

二、腾讯云数据盘更换
2.1、ES数据迁移
curl -X PUT "172.21.16.76:9200/_cluster/settings" -H 'Content-Type: application/json' -d' { "transient" : { "cluster.routing.allocation.exclude._ip" : "172.21.16.64" } }'
172.21.16.76:9200 ###是主节点IP
172.21.16.64 ###要移除的节点IP
2.2、卸载磁盘
ansible远程执行脚本：
ansible 172.21.16.73 -m script -a 'umount.sh' -k
more umount.sh 

#!/bin/bash
echo "迁移完数据关闭es"
jps|grep -i elasticsearch |awk -F " " '{print $1}'|xargs kill  -SIGTERM
echo "关闭所有服务"
supervisorctl stop all
/etc/init.d/zabbix_agentd stop
chkconfig zabbix_agentd off
echo "备份data"
cp /data/* /mnt/ -R
echo "卸载磁盘"
lsof |grep /data|awk -F " " '{print $2}'|xargs kill -9
umount /data

2.3、挂载磁盘：
ansible执行远程挂载磁盘脚本：
ansible 172.21.16.73 -m script -a 'mount.sh' -k
more mount.sh

#!/bin/bash  
sed -i '/data/'d /etc/fstab
. /root/.bash_profile
set -m  
echo "初始化磁盘"
echo "n
p
1

w
" | fdisk /dev/vdb
mkfs.xfs /dev/vdb1
mount /dev/vdb1 /data
systemctl daemon-reload
echo "开机自动挂载"
UUID=$(blkid |grep sdb|awk -F ' ' '{print $2}')
echo "$UUID /data xfs defaults 0 0" >> /etc/fstab
cp /mnt/* /data/ -R
chown -R elsearch:elsearch /data/e*

2.4、启动服务：
ansible执行远程启动脚本：
ansible 172.21.16.73 -m script -a 'services.sh' -k
more services.sh

cp  /mnt/* /data/ -R
chown -R elsearch:elsearch /data/e*
systemctl start supervisord
supervisorctl restart elasticsearch