TiDB 初体验

部署TiDB就是摆在我们面前的第一节课，其实有很多的部署方式，限于环境，我先开始琢磨单机版如何部署。

在Centos 6的版本中如果要部署，这个难度还是比较大的，而且会有很多未知的坑，根据官方的建议，是需要在Centos 7以上的版本中，否则glibc的版本问题会很快碰到。

我们安装一套Centos7，采用快速的单机部署的方式来尝鲜。

得到二进制的包，大概是100多M.

[root@localhost ~]# wget http://download.pingcap.org/tidb-latest-linux-amd64.tar.gz [root@localhost tidb]# wget http://download.pingcap.org/tidb-latest-linux-amd64.sha256
做信息匹配，查看文件的校验是否正确。
sha256sum -c tidb-latest-linux-amd64.sha256
解压文件。
tar -xzf tidb-latest-linux-amd64.tar.gz [root@localhost tidb]# cd tidb-latest-linux-amd64
启动PD [root@localhost tidb-latest-linux-amd64]# ./bin/pd-server --data-dir=pd --log-file=pd.log & 关键的步骤来了，启动tikv，绝大多数的部署都是在这个步骤失败。 [root@localhost tidb-latest-linux-amd64]# ./bin/tikv-server --pd="127.0.0.1:2379" --data-dir=tikv --log-file=tikv.log & 启动tidb-server [root@localhost tidb-latest-linux-amd64]# ./bin/tidb-server --store=tikv --path="127.0.0.1:2379" --log-file=tidb.log & 使用mysql的方式来登录： [root@localhost tidb-latest-linux-amd64]# mysql -h 127.0.0.1 -P 4000 -u root -D test 
Welcome to the MariaDB monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.7.1-TiDB-v2.0.0-rc.1-6-ge38f406 MySQL Community Server (Apache License 2.0) Copyright (c) 2000, 2017, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. 开始体验一把
MySQL [test]> \s -------------- mysql  Ver 15.1 Distrib 5.5.56-MariaDB, for Linux (x86_64) using readline 5.1 Connection id: 2 Current database: test
Current user: root@127.0.0.1 SSL: Not in use
Current pager: stdout
Using outfile: '' Using delimiter: ; Server: MySQL
Server version: 5.7.1-TiDB-v2.0.0-rc.1-6-ge38f406 MySQL Community Server (Apache License 2.0) Protocol version: 10 Connection: 127.0.0.1 via TCP/IP
Server characterset: latin1
Db     characterset: utf8
Client characterset: utf8
Conn. characterset: utf8
TCP port: 4000 -------------- 查看对应的数据库列表。

MySQL [test]> show databases; +--------------------+ | Database | +--------------------+ | INFORMATION_SCHEMA | | PERFORMANCE_SCHEMA | | mysql | | test | +--------------------+ 4 rows in set (0.00 sec) MySQL [test]> select tidb_version(); +---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | tidb_version() | +---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | Release Version: v2.0.0-rc.1-6-ge38f406
Git Commit Hash: e38f4067569152dd0acb233b4a8e0cc05644dee1
Git Branch: master
UTC Build Time: 2018-03-11 08:28:59 GoVersion: go version go1.10 linux/amd64
TiKV Min Version: 1.1.0-dev.2 | +---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ 1 row in set (0.04 sec) MySQL [test]> select version(); +-----------------------------------+ | version() | +-----------------------------------+ | 5.7.1-TiDB-v2.0.0-rc.1-6-ge38f406 | +-----------------------------------+ 1 row in set (0.00 sec) MySQL [test]> select user,host from mysql.user; +------+------+ | user | host | +------+------+ | root | % | +------+------+ 1 row in set (0.00 sec) MySQL [test]> show master status\G
ERROR 1105 (HY000): line 1 column 11 near " status" (total length 18) MySQL [test]> show slave status\G
ERROR 1105 (HY000): line 1 column 10 near " status" (total length 17) MySQL [test]> MySQL [test]> show binary logs; ERROR 1105 (HY000): line 1 column 11 near " logs" (total length 16) MySQL [test]> show variables like '%innodb%'; +------------------------------------------+------------------------+ | Variable_name | Value | +------------------------------------------+------------------------+ | innodb_locks_unsafe_for_binlog | OFF | | innodb_api_enable_mdl | OFF | | innodb_use_native_aio | OFF |