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KingbaseES V8R6 手工创建主备流复制集群案例

2021-11-05 21:03:19 作者：互联网

案例说明：

KingbaseES V8R6部署一般可采用图形化方式快速部署，但在生产一线，有的服务器系统未启用图形化环境，所以对于KingbaseES V8R6的集群需采用手工字符界面方式部署，本次文档记录了在一线环境下的字符界面部署操作步骤。

1）本案例在通用机环境下完成。

2）需要首先安装KingbaseES R6 cluster版本的软件包。

3）本案例主要用于系统环境不能提供图形化部署或者图形化部署中出现故障时。

4）本案例在通用机环境完成，专用机环境可用于参考。

5）通用机环境的操作基本由kingbase用户完成。

6）在通过脚本一键部署R6集群时，请先做好系统环境的准备工作：（如ssh信任关系、防火墙、selinux配置、进程资源管理配置、用户创建、ip分配等）。

一、系统环境

1.1 集群架构

1.2 数据库版本

KingbaseES_V008R006C003B0062_Aarch64

1.3 系统CPU架构（鲲鹏920）

[root@ECOLABAPP37 ~]# lscpu

Architecture:                    aarch64

CPU op-mode(s):                  64-bit

Byte Order:                      Little Endian

CPU(s):                          192

On-line CPU(s) list:             0-191

Thread(s) per core:              1

Core(s) per socket:              48

Socket(s):                       4

NUMA node(s):                    8

Vendor ID:                       HiSilicon

Model:                           0

Model name:                      Kunpeng-920

Stepping:                        0x1

CPU max MHz:                     3000.0000

CPU min MHz:                     200.0000

......

1.4 系统内存信息

[root@ECOLABAPP37 ~]# free -m

total used free shared buff/cache

available

Mem: 522103 18400 501575 63 2127

501458

Swap: 65535 0 65535

1.5 网卡信息

nm-bond: flags=5187<UP,BROADCAST,RUNNING,MASTER,MULTICAST> mtu 1500

inet 10.248.52.* netmask 255.255.240.0 broadcast 10.248.63.255

inet6 fe80::1728:3b0b:9694:6c2c prefixlen 64 scopeid 0x20<link>

ether 00:07:45:c2:d1:20 txqueuelen 1000 (Ethernet)

RX packets 83667032 bytes 5305257118 (4.9 GiB)

RX errors 0 dropped 16629 overruns 0 frame 0

TX packets 513509 bytes 44561399 (42.4 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

1.6 系统内核信息

[root@ECOLABAPP37 ~]# uname -a

Linux ECOLABAPP37 4.19.90-2003.4.0.0036.oe1.aarch64 #1 SMP Mon Mar 23 19:06:43 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux

二、配置系统环境（all nodes）

2.1 创建kingbase用户

[root@ECOLABAPP37 ~]# id kingbase

uid=1002(kingbase) gid=1002(kingbase) groups=1002(kingbase)

2.2 关闭主机系统防火墙

[root@ECOLABAPP37 Scripts]# systemctl stop firewalld

[root@ECOLABAPP37 Scripts]# systemctl disable firewalld

[root@ECOLABAPP38 ~]# systemctl status firewalld

firewalld.service - firewalld - dynamic firewall daemon

Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled)

Active: inactive (dead)

Docs: man:firewalld(1)

……

2.3 配置selinux

[kingbase@node3 ~]$ cat /etc/sysconfig/selinux |grep -v ^#|grep -v ^$

SELINUXTYPE=targeted

SELINUX=disabled

三、通过脚本构建集群

3.1 配置部署环境

Kingbase用户在宿主目录下创建文件夹：

[kingbase@ECOLABAPP37 ~] mkdir R6_install

将部署脚本、配置文件及数据库license.dat文件放置到当前目录下。

[kingbase@ECOLABAPP37 ~]$ cd R6_install/

[kingbase@ECOLABAPP37 R6_install]$ ls -lh

total 80K

-rw------- 1 kingbase kingbase 5.0K Apr 19 17:28 install.conf

-rw-r--r-- 1 kingbase kingbase 2.9K Apr 19 17:20 license.dat

-r-xr-xr-x 1 kingbase kingbase 2.1K Apr 19 16:57 trust_cluster.sh

-rw------- 1 kingbase kingbase 32K Apr 19 16:57 V8R6_cluster_install.sh

-rw------- 1 kingbase kingbase 31K Apr 19 16:57 V8R6一键部署集群脚本操作手册.docx

1) 查看和编辑集群配置文件（根据系统环境进行修改）

[kingbase@node3 ~]$ cat install.conf |grep -v ^#|grep -v ^$

on_bmj=0

all_ip=(10.248.52.165 10.248.52.166)

install_dir="/home/kingbase/cluster"

zip_package="/opt/Kingbase/ES/V8/DeployTools/zip/Aarch64/db.zip"

license_file=(license.dat)

db_user="system" # the user name of database

db_password="123456" # the password of database

db_port="54321" # the port of database, defaults is 54321

db_mode="oracle" # database mode: pg, oracle

db_auth="scram-sha-256" # database authority: scram-sha-256, md5, default is scram-sha-256

trusted_servers="10.248.48.1"

virtual_ip="10.248.52.174/20"

net_device=(nm-bond nm-bond)

ipaddr_path="/sbin"

arping_path="/usr/sbin"

ping_path="/bin"

super_user="root"

execute_user="kingbase"

reconnect_attempts="6" # the number of retries in the event of an error

reconnect_interval="10" # retry interval

recovery="manual" # the way of cluster recovery: automatic/manual

ssh_port="22" # the port of ssh, default is 22

2) 配置主机间ssh互信（可以手工配置，也可以通过以下脚本配置，建议手工配置）

注意：
需要配置kingbase用户之间、root用户之间、kingbase和root用户之间，配置完成后检查用户信任关系

查看脚本内容（部分内容）：

[kingbase@ECOLABAPP37 R6_install]$ cat trust_cluster.sh

#!/bin/bash

# you should change two parameters: general_user and all_ip

# general_user is the general user which you want to config SSH password free

# all_ip is the devices that you want to config SSH password free

shell_folder=$(dirname $(readlink -f "$0"))

install_conf="${shell_folder}/install.conf"

primary_host=""

curren_user=`whoami`

......

for ips in ${all_ip[@]}

ssh -p ${ssh_port} root@$ips "cp -r /root/.ssh /home/$general_user/"

ssh -p ${ssh_port} root@$ips "chmod 700 /home/$general_user/.ssh/"

ssh -p ${ssh_port} root@$ips "chown -R $general_user:$general_user /home/$general_user/.ssh/"

done

3）查看cluser部署脚本（部分内容）

[kingbase@ECOLABAPP37 R6_install]$ cat V8R6_cluster_install.sh

#!/bin/bash

shell_folder=$(dirname $(readlink -f "$0"))

install_conf=""

#all_ip=(192.168.28.10 192.168.28.11)

all_ip=()

#install_dir="/home/kingbase/tmp_kingbase"

install_dir=""

#zip_package="${shell_folder}/db.zip"

zip_package=""

#license_path="${shell_folder}"

license_path="${shell_folder}"

#BMJ Kingbase install path

soft_dir="/opt/Kingbase/ES/V8/Server"

......

# start up the cluster

echo "[INSTALL] start up the whole cluster ..."

execute_command ${execute_user} ${all_ip[-2]} "${sys_bindir}/sys_monitor.sh start"

[ $? -ne 0 ] && exit 1

echo "[INSTALL] start up the whole cluster ... OK"

}

main

exit 0

3.2 执行脚本部署

注意：
必须将license.dat文件也存放到当前目录下，缺少license.dat将会出现错误。

当前集群手工部署文件存储目录：

[kingbase@ECOLABAPP37 ~]$ cd R6_install/

[kingbase@ECOLABAPP37 R6_install]$ ls -lh

total 80K

-rw------- 1 kingbase kingbase 5.0K Apr 19 17:28 install.conf

-rw-r--r-- 1 kingbase kingbase 2.9K Apr 19 17:20 license.dat

-r-xr-xr-x 1 kingbase kingbase 2.1K Apr 19 16:57 trust_cluster.sh

-rw------- 1 kingbase kingbase 32K Apr 19 16:57 V8R6_cluster_install.sh

-rw------- 1 kingbase kingbase 31K Apr 19 16:57 V8R6一键部署集群脚本操作手册.docx

执行部署脚本：

根据输出日志信息，判断部署过程中的故障。完整阅读输出日志，结合图形化部署工具，可以加深repmgr集群部署的工作机制。

[kingbase@ECOLABAPP37 ~]$ cd R6_install/

[kingbase@ECOLABAPP37 R6_install]$ sh V8R6_cluster_install.sh

[CONFIG_CHECK] file format is correct ... OK

[CONFIG_CHECK] check if the virtual ip "10.248.52.*" already exist ...

[CONFIG_CHECK] there is no "10.248.52.*" on any host, OK

[CONFIG_CHECK] the number of net_device matches the length of all_ip or the number of net_device is 1 ... OK

[CONFIG_CHECK] the number of license_num matches the length of all_ip or the number of license_num is 1 ... OK

[RUNNING] check if the host can be reached ...

[RUNNING] success connect to the target "10.248.52.*" ..... OK

[RUNNING] check the db is running or not...

[RUNNING] the db is not running on "10.248.52.*:54321" ..... OK

[RUNNING] check if the install dir is already exist ...

[RUNNING] the install dir is not exist on "10.248.52.*" ..... OK

[INSTALL] create the install dir "/home/kingbase/cluster/kingbase" on every host ...

[INSTALL] success to create the install dir "/home/kingbase/cluster/kingbase" on "10.248.52.*" ..... OK

[INSTALL] decompress the "/opt/Kingbase/ES/V8/DeployTools/zip/Aarch64/db.zip" to "/home/kingbase/cluster/kingbase"

[INSTALL] success to decompress the "/opt/Kingbase/ES/V8/DeployTools/zip/Aarch64/db.zip" to "/home/kingbase/cluster/kingbase" on "10.248.52.*"..... OK

[INSTALL] create the dir "/home/kingbase/cluster/kingbase/etc" on all host

[INSTALL] scp the dir "/home/kingbase/cluster/kingbase" to other host

[INSTALL] try to copy the install dir "/home/kingbase/cluster/kingbase" to "10.248.52.*" .....

[INSTALL] success to scp the install dir "/home/kingbase/cluster/kingbase" to "10.248.52.*" ..... OK

[RUNNING] chmod u+s for "/sbin" and "/home/kingbase/cluster/kingbase/bin"

[RUNNING] chmod u+s /sbin/ip on "10.248.52.*" ..... OK

[RUNNING] chmod u+s /home/kingbase/cluster/kingbase/bin/arping on "10.248.52.*" ..... OK

[RUNNING] chmod u+s /sbin/ip on "10.248.52.*" ..... OK

[RUNNING] chmod u+s /home/kingbase/cluster/kingbase/bin/arping on "10.248.52.*" ..... OK

[INSTALL] check license_file "license.dat"

[INSTALL] success to access license_file: /home/kingbase/R6_install/license.dat

[INSTALL] Copy license to /home/kingbase/cluster/kingbase/../: license.dat

[INSTALL] success to copy /home/kingbase/R6_install/license.dat to /home/kingbase/cluster/kingbase/../ on 10.248.52.*

[INSTALL] check license_file "license.dat"

[INSTALL] success to access license_file: /home/kingbase/R6_install/license.dat

[INSTALL] Copy license to /home/kingbase/cluster/kingbase/../: license.dat

[INSTALL] success to copy /home/kingbase/R6_install/license.dat to /home/kingbase/cluster/kingbase/../ on 10.248.52.*

[INSTALL] begin to init the database on "10.248.52.*" ...

The files belonging to this database system will be owned by user "kingbase".

This user must also own the server process.

The database cluster will be initialized with locale "en_US.UTF-8".

The default database encoding has accordingly been set to "UTF8".

The default text search configuration will be set to "english".

Data page checksums are disabled.

creating directory /home/kingbase/cluster/kingbase/data ... ok

creating subdirectories ... ok

selecting dynamic shared memory implementation ... posix

selecting default max_connections ... 100

selecting default shared_buffers ... 128MB

selecting default time zone ... Asia/Shanghai

creating configuration files ... ok

Begin setup encrypt device

initializing the encrypt device ... ok

running bootstrap script ... ok

performing post-bootstrap initialization ... ok

create security database ... ok

load security database ... ok

create initial audit rules ... ok

syncing data to disk ... ok

Success. You can now start the database server using:

/home/kingbase/cluster/kingbase/bin/sys_ctl -D /home/kingbase/cluster/kingbase/data -l logfile start

[INSTALL] end to init the database on "10.248.52.*" ... OK

[INSTALL] wirte the kingbase.conf on "10.248.52.*" ...

[INSTALL] wirte the kingbase.conf on "10.248.52.*" ... OK

[INSTALL] wirte the es_rep.conf on "10.248.52.*" ...

[INSTALL] wirte the es_rep.conf on "10.248.52.*" ... OK

[INSTALL] wirte the sys_hba.conf on "10.248.52.*" ...

[INSTALL] wirte the sys_hba.conf on "10.248.52.*" ... OK

[INSTALL] wirte the .encpwd on every host

[INSTALL] write the repmgr.conf on every host

[INSTALL] write the repmgr.conf on "10.248.52.*" ...

[INSTALL] write the repmgr.conf on "10.248.52.*" ... OK

[INSTALL] write the repmgr.conf on "10.248.52.*" ...

[INSTALL] write the repmgr.conf on "10.248.52.*" ... OK

[INSTALL] start up the database on "10.248.52.*" ...

[INSTALL] /home/kingbase/cluster/kingbase/bin/sys_ctl -w -t 60 -l /home/kingbase/cluster/kingbase/logfile -D /home/kingbase/cluster/kingbase/data start

waiting for server to start.... done

server started

[INSTALL] start up the database on "10.248.52.*" ... OK

[INSTALL] create the database "esrep" and user "esrep" for repmgr ...

CREATE DATABASE

CREATE ROLE

[INSTALL] create the database "esrep" and user "esrep" for repmgr ... OK

[INSTALL] register the primary on "10.248.52.*" ...

INFO: connecting to primary database...

NOTICE: attempting to install extension "repmgr"

NOTICE: "repmgr" extension successfully installed

NOTICE: PING 10.248.52.* (10.248.52.*) 56(84) bytes of data.

--- 10.248.52.* ping statistics ---

2 packets transmitted, 0 received, 100% packet loss, time 1005ms

WARNING: ping host"10.248.52.*" failed

DETAIL: average RTT value is not greater than zero

INFO: loadvip result: 1, arping result: 1

NOTICE: node (ID: 1) acquire the virtual ip 10.248.52.* success

NOTICE: primary node record (ID: 1) registered

[INSTALL] register the primary on "10.248.52.*" ... OK

[INSTALL] clone and start up the standby ...

clone the standby on "10.248.52.*" ...

/home/kingbase/cluster/kingbase/bin/repmgr -h 10.248.52.* -U esrep -d esrep -p 54321 standby clone

NOTICE: destination directory "/home/kingbase/cluster/kingbase/data" provided

INFO: connecting to source node

DETAIL: connection string is: host=10.248.52.* user=esrep port=54321 dbname=esrep

DETAIL: current installation size is 64 MB

NOTICE: checking for available walsenders on the source node (2 required)

NOTICE: checking replication connections can be made to the source server (2 required)

INFO: creating directory "/home/kingbase/cluster/kingbase/data"...

NOTICE: starting backup (using sys_basebackup)...

HINT: this may take some time; consider using the -c/--fast-checkpoint option

INFO: executing:

/home/kingbase/cluster/kingbase/bin/sys_basebackup -l "repmgr base backup" -D /home/kingbase/cluster/kingbase/data -h 10.248.52.* -p 54321 -U esrep -X stream -S repmgr_slot_2

NOTICE: standby clone (using sys_basebackup) complete

NOTICE: you can now start your Kingbase server

HINT: for example: sys_ctl -D /home/kingbase/cluster/kingbase/data start

HINT: after starting the server, you need to register this standby with "repmgr standby register"

clone the standby on "10.248.52.*" ... OK

start up the standby on "10.248.52.*" ...

/home/kingbase/cluster/kingbase/bin/sys_ctl -w -t 60 -l /home/kingbase/cluster/kingbase/logfile -D /home/kingbase/cluster/kingbase/data start

waiting for server to start.... done

server started

start up the standby on "10.248.52.*" ... OK

INFO: connecting to local node "node2" (ID: 2)

INFO: connecting to primary database

WARNING: --upstream-node-id not supplied, assuming upstream node is primary (node ID 1)

INFO: standby registration complete

NOTICE: standby node "node2" (ID: 2) successfully registered

[INSTALL] register the standby on "10.248.52.*" ... OK

[INSTALL] start up the whole cluster ...

2021-04-19 17:31:58 Ready to start all DB ...

2021-04-19 17:31:58 begin to start DB on "[10.248.52.*]".

2021-04-19 17:31:59 DB on "[10.248.52.*]" already started, connect to check it.

2021-04-19 17:32:00 DB on "[10.248.52.*]" start success.

2021-04-19 17:32:00 Try to ping trusted_servers on host 10.248.52.* ...

2021-04-19 17:32:02 Try to ping trusted_servers on host 10.248.52.* ...

2021-04-19 17:32:05 begin to start DB on "[10.248.52.*]".

2021-04-19 17:32:05 DB on "[10.248.52.*]" already started, connect to check it.

2021-04-19 17:32:06 DB on "[10.248.52.*]" start success.

----+-------+---------+-----------+----------+----------+----------+----------+---------------------------------------------------------------------------------------------------------------------------------------------------

2021-04-19 17:32:06 The primary DB is started.

2021-04-19 17:32:12 Success to load virtual ip [10.248.52.*] on primary host [10.248.52.*].

2021-04-19 17:32:12 Try to ping vip on host 10.248.52.* ...

2021-04-19 17:32:14 Try to ping vip on host 10.248.52.* ...

2021-04-19 17:32:17 begin to start repmgrd on "[10.248.52.*]".

[2021-04-19 17:32:17] [NOTICE] using provided configuration file "/home/kingbase/cluster/kingbase/bin/../etc/repmgr.conf"

[2021-04-19 17:32:17] [NOTICE] redirecting logging output to "/home/kingbase/cluster/kingbase/hamgr.log"

2021-04-19 17:32:17 repmgrd on "[10.248.52.*]" start success.

2021-04-19 17:32:17 begin to start repmgrd on "[10.248.52.*]".

[2021-04-19 15:15:45] [NOTICE] using provided configuration file "/home/kingbase/cluster/kingbase/bin/../etc/repmgr.conf"

[2021-04-19 15:15:45] [NOTICE] redirecting logging output to "/home/kingbase/cluster/kingbase/hamgr.log"

2021-04-19 17:32:18 repmgrd on "[10.248.52.*]" start success.

----+-------+---------+-----------+----------+---------+-------+---------+--------------------

1 | node1 | primary | * running | | running | 62956 | no | n/a

/home/kingbase/cluster/kingbase/bin/../etc/all_nodes_tools.conf does not exist

2021-04-19 17:32:22 Done.

[INSTALL] start up the whole cluster ... OKSuccess. You can now start the database server using: