安装单机部署TiDB

1、下载并安装 TiUP

curl --proto '=https' --tlsv1.2 -sSf https://tiup-mirrors.pingcap.com/install.sh | sh

2、声明全局环境变量

注意看第一步执行完的内容，页面的日志中会打印相关的source相关信息，直接复制执行即可

source ${your_shell_profile}

3、安装 TiUP 的 cluster 组件

tiup cluster

执行如上命令，若机器已经安装 TiUP cluster，需要更新软件版本：

tiup update --self && tiup update cluster

4、修改配置

由于模拟多机部署，需要通过 root 用户调大 sshd 服务的连接数限制：

修改 /etc/ssh/sshd_config 将 MaxSessions 调至 20。
重启 sshd 服务：

service sshd restart

5、创建并启动集群

按下面的配置模板，编辑配置文件，命名为 topo.yaml
host：设置为本部署主机的 IP

# # Global variables are applied to all deployments and used as the default value of
# # the deployments if a specific deployment value is missing.
global:
 user: "tidb"
 ssh_port: 22
 deploy_dir: "/tidb-deploy"
 data_dir: "/tidb-data"

# # Monitored variables are applied to all the machines.
monitored:
 node_exporter_port: 9100
 blackbox_exporter_port: 9115

server_configs:
 tidb:
   log.slow-threshold: 300
 tikv:
   readpool.storage.use-unified-pool: false
   readpool.coprocessor.use-unified-pool: true
 pd:
   replication.enable-placement-rules: true
   replication.location-labels: ["host"]
 tiflash:
   logger.level: "info"

pd_servers:
 - host: 192.168.30.43

tidb_servers:
 - host: 192.168.30.43

tikv_servers:
 - host: 192.168.30.43
   port: 20160
   status_port: 20180
   config:
     server.labels: { host: "logic-host-1" }

 - host: 192.168.30.43
   port: 20161
   status_port: 20181
   config:
     server.labels: { host: "logic-host-2" }

 - host: 192.168.30.43
   port: 20162
   status_port: 20182
   config:
     server.labels: { host: "logic-host-3" }

tiflash_servers:
 - host: 192.168.30.43

monitoring_servers:
 - host: 192.168.30.43

grafana_servers:
 - host: 192.168.30.43

6、执行集群部署命令

#tiup cluster deploy <cluster-name> <tidb-version> ./topo.yaml --user root -p

tiup cluster deploy tidb_v640 v6.4.0 ./topo.yaml --user root -p

参数 <cluster-name> 表示设置集群名称
参数 <tidb-version> 表示设置集群版本，可以通过 tiup list tidb 命令来查看当前支持部署的 TiDB 版本

注意错误提示：ssh: unable to authenticate, attempted methods [none password], no supported methods remain

[root@HAST04 tidb]# tiup cluster deploy tidb_v640 v6.4.0 ./topo.yaml -i ~/.ssh/ --user root -p
tiup is checking updates for component cluster ...
Starting component `cluster`: /root/.tiup/components/cluster/v1.11.0/tiup-cluster deploy tidb_v640 v6.4.0 ./topo.yaml -i /root/.ssh/ --user root -p
Input SSH password: 

+ Detect CPU Arch Name
  - Detecting node 192.168.30.43 Arch info ... Error

Error: failed to fetch cpu-arch or kernel-name: executor.ssh.execute_failed: Failed to execute command over SSH for 'root@192.168.30.43:22' {ssh_stderr: , ssh_stdout: , ssh_command: export LANG=C; PATH=$PATH:/bin:/sbin:/usr/bin:/usr/sbin uname -m}, cause: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none password], no supported methods remain

Verbose debug logs has been written to /root/.tiup/logs/tiup-cluster-debug-2022-11-22-17-07-18.log.

问题原因：跟TiDB依赖的SSH秘钥相关

解决方法：所在服务器上生成密钥，再次执行部署命令

[root@master spark]# ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa): 
/root/.ssh/id_rsa already exists.
Overwrite (y/n)? y
Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /root/.ssh/id_rsa.
Your public key has been saved in /root/.ssh/id_rsa.pub.  #注意此时可以看到公共密钥的位置存放地址，记住这个，下面会用到
The key fingerprint is:
SHA256:7bUrm6Bob+rSnLSXwp+uu8guOkZr+pNCOcp2Zzv6JVc root@localhost.localdomain
The key's randomart image is:
+---[RSA 2048]----+
|                 |
|                 |
|                 |
|         .       |
|  .     SE. .    |
| =  .   .. . .   |
|= o* + +. . .    |
|=B+oO=Bo ... .   |
|O***%#O   oo.    |
+----[SHA256]-----+

tiup cluster deploy tidb_v640 v6.4.0 ./topo.yaml --user root i

执行完如上的操作后，若还是继续报错，则继续向下执行：

vim /etc/ssh/sshd_config

[root@localhost tidb]# service sshd restart
Redirecting to /bin/systemctl restart sshd.service

此时，继续向下执行，执行后的正确打印信息如下：

[root@HAST04 tidb]# tiup cluster deploy tidb_v640 v6.4.0 ./topo.yaml --user root i
tiup is checking updates for component cluster ...
Starting component `cluster`: /root/.tiup/components/cluster/v1.11.0/tiup-cluster deploy tidb_v640 v6.4.0 ./topo.yaml --user root i

+ Detect CPU Arch Name
  - Detecting node 192.168.30.43 Arch info ... Done

+ Detect CPU OS Name
  - Detecting node 192.168.30.43 OS info ... Done
Please confirm your topology:
Cluster type:    tidb
Cluster name:    tidb_v640
Cluster version: v6.4.0
Role        Host           Ports                            OS/Arch       Directories
----        ----           -----                            -------       -----------
pd          192.168.30.43  2379/2380                        linux/x86_64  /tidb-deploy/pd-2379,/tidb-data/pd-2379
............等等

7、启动集群

[root@HAST04 tidb]# tiup cluster start tidb_v640

8、停止集群

[root@HAST04 tidb]#tiup cluster stop tidb_v640

9、查看集群状态

[root@HAST04 tidb]# tiup cluster display tidb_v640
#打印的集群信息如下
tiup is checking updates for component cluster ...
A new version of cluster is available:
The latest version:         v1.11.1
Local installed version:    v1.11.0
Update current component:   tiup update cluster
Update all components:      tiup update --all

Starting component `cluster`: /root/.tiup/components/cluster/v1.11.0/tiup-cluster display tidb_v640
Cluster type:       tidb
Cluster name:       tidb_v640
Cluster version:    v6.4.0
Deploy user:        tidb
SSH type:           builtin
Dashboard URL:      http://192.168.30.43:2379/dashboard   #tidb的面板
Grafana URL:        http://192.168.30.43:3000   #tidb的监控界面
ID                   Role        Host           Ports                            OS/Arch       Status   Data Dir                    Deploy Dir
--                   ----        ----           -----                            -------       ------   --------                    ----------
192.168.30.43:3000   grafana     192.168.30.43  3000                             linux/x86_64  Up       -                           /tidb-deploy/grafana-3000
192.168.30.43:2379   pd          192.168.30.43  2379/2380                        linux/x86_64  Up|L|UI  /tidb-data/pd-2379          /tidb-deploy/pd-2379
192.168.30.43:9090   prometheus  192.168.30.43  9090/12020                       linux/x86_64  Up       /tidb-data/prometheus-9090  /tidb-deploy/prometheus-9090
192.168.30.43:4000   tidb        192.168.30.43  4000/10080                       linux/x86_64  Up       -                           /tidb-deploy/tidb-4000
192.168.30.43:9000   tiflash     192.168.30.43  9000/8123/3930/20170/20292/8234  linux/x86_64  N/A      /tidb-data/tiflash-9000     /tidb-deploy/tiflash-9000
192.168.30.43:20160  tikv        192.168.30.43  20160/20180                      linux/x86_64  Up       /tidb-data/tikv-20160       /tidb-deploy/tikv-20160
192.168.30.43:20161  tikv        192.168.30.43  20161/20181                      linux/x86_64  Up       /tidb-data/tikv-20161       /tidb-deploy/tikv-20161
192.168.30.43:20162  tikv        192.168.30.43  20162/20182                      linux/x86_64  Up       /tidb-data/tikv-20162       /tidb-deploy/tikv-20162
Total nodes: 8

注意：从如上的信息中可以看出：

tiflash状态为N/A：如果你不用tiflash的列存储，只是看tikv的事务能力，则可忽略tiflash的状态，若需要HTAP能力，则需要启动Tiflash，，首先查看tiflash的使用Ports端口是否均未被占用，若被占用，则停止掉被占用的进程，重新启动集群。
tiflash状态为down：则需要等一会，tiflash的启动会相比较慢一些，过一会了再次查看集群状态即可

10、访问集群

安装 MySQL 客户端。如果已安装 MySQL 客户端则可跳过这一步骤。

yum -y install mysql

访问 TiDB 数据库，密码为空：

mysql -h 192.168.30.43 -P 4000 -u root

[root@HAST04 .ssh]# mysql -h 192.168.30.43 -P 4000 -u root
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 407
Server version: 5.7.25-TiDB-v6.4.0 TiDB Server (Apache License 2.0) Community Edition, MySQL 5.7 compatible

Copyright (c) 2021, 2022 StoneAtom Group Holding Limited
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

访问 TiDB 的 Grafana 监控：

通过 http://192.168.30.43:3000/login 访问集群 Grafana 监控页面，默认用户名和密码均为 admin。

访问 TiDB 的 Dashboard：

通过http://192.168.30.43:2379/dashboard/访问集群 TiDB Dashboard 监控页面，默认用户名为 root，密码为空。

执行以下命令确认当前已经部署的集群列表：

tiup cluster list

执行以下命令查看集群的拓扑结构和状态：

tiup cluster display <cluster-name>

增加Tiflash

tiup ctl:v6.4.0 pd -u http://192.168.30.43:2379 config set enable-placement-rules true

posted @ 2022-12-08 22:08 Syw_文阅读(1014) 评论(0) 编辑收藏举报

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