集群规划
| 节点 | IP | 数据目录 |
|---|---|---|
| node01 | 192.168.180.130 | node01 |
| node02 | 192.168.180.131 | node02 |
| node03 | 192.168.180.132 | node03 |
| node04 | 192.168.180.133 | node04 |
| node05 | 192.168.180.134 | node05 |
CockroachDB安装
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从官网下载core二进制包
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上传并解压到指定目录
tar -zxvf cockroach-v19.2.4.linux-amd64.tgz -C /opt/ronnie/
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修改目录名称
cd /opt/ronnie/ mv cockroach-v19.2.4.linux-amd64/ cockroach
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将目录传送至其他节点
cd /opt/ronnie scp -r cockroach/ root@node02:`pwd` scp -r cockroach/ root@node03:`pwd` scp -r cockroach/ root@node04:`pwd` scp -r cockroach/ root@node05:`pwd`
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启动节点
# node01 /opt/ronnie/cockroach/cockroach start --insecure --store=node01 --host=192.168.180.130 --port=26257 --http-port=8080 & # node02 /opt/ronnie/cockroach/cockroach start --insecure --store=node02 --host=192.168.180.131 --port=26257 --http-port=8080 --join=192.168.180.130:26257 & # node03 /opt/ronnie/cockroach/cockroach start --insecure --store=node03 --host=192.168.180.132 --port=26257 --http-port=8080 --join=192.168.180.130:26257 & # node04 /opt/ronnie/cockroach/cockroach start --insecure --store=node04 --host=192.168.180.133 --port=26257 --http-port=8080 --join=192.168.180.130:26257 & # node05 /opt/ronnie/cockroach/cockroach start --insecure --store=node04 --host=192.168.180.134 --port=26257 --http-port=8080 --join=192.168.180.130:26257 &
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启动界面
* WARNING: RUNNING IN INSECURE MODE! * * - Your cluster is open for any client that can access 192.168.180.130. * - Any user, even root, can log in without providing a password. * - Any user, connecting as root, can read or write any data in your cluster. * - There is no network encryption nor authentication, and thus no confidentiality. * * Check out how to secure your cluster: https://www.cockroachlabs.com/docs/v19.2/secure-a-cluster.html * * * WARNING: running 'cockroach start' without --join is deprecated. * Consider using 'cockroach start-single-node' or 'cockroach init' instead. * CockroachDB node starting at 2020-03-24 03:07:58.791675436 +0000 UTC (took 0.3s) build: CCL v19.2.4 @ 2020/02/06 21:55:19 (go1.12.12) webui: http://192.168.180.130:8080 sql: postgresql://root@192.168.180.130:26257?sslmode=disable RPC client flags: /opt/ronnie/cockroach/cockroach <client cmd> --host=192.168.180.130:26257 --insecure logs: /root/node01/logs temp dir: /root/node01/cockroach-temp051514561 external I/O path: /root/node01/extern store[0]: path=/root/node01 status: initialized new cluster clusterID: ba298af3-801c-433c-a3ea-a8158dddb878 nodeID: 1
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查询集群状态信息
cd /opt/ronnie/cockroach ./cockroach node status --insecure --host=192.168.180.130 # 查询结果 id | address | sql_address | build | started_at | updated_at | locality | is_available | is_live +----+-----------------------+-----------------------+---------+----------------------------------+----------------------------------+----------+--------------+---------+ 1 | 192.168.180.130:26257 | 192.168.180.130:26257 | v19.2.4 | 2020-03-24 03:07:58.660822+00:00 | 2020-03-24 03:16:13.640827+00:00 | | true | true 2 | 192.168.180.131:26257 | 192.168.180.131:26257 | v19.2.4 | 2020-03-24 03:08:06.856781+00:00 | 2020-03-24 03:16:12.903671+00:00 | | true | true 3 | 192.168.180.132:26257 | 192.168.180.132:26257 | v19.2.4 | 2020-03-24 03:08:08.054824+00:00 | 2020-03-24 03:16:14.065921+00:00 | | true | true 4 | 192.168.180.133:26257 | 192.168.180.133:26257 | v19.2.4 | 2020-03-24 03:08:08.886852+00:00 | 2020-03-24 03:16:14.886065+00:00 | | true | true 5 | 192.168.180.134:26257 | 192.168.180.134:26257 | v19.2.4 | 2020-03-24 03:08:09.710603+00:00 | 2020-03-24 03:16:15.735922+00:00 | | true | true (5 rows)
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查询集群ID信息
./cockroach node ls --insecure --host=192.168.180.130 # 查询结果 id +----+ 1 2 3 4 5 (5 rows)
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查询单个节点信息
./cockroach node status 1 --insecure --host=192.168.180.131 # 查询结果 id | address | sql_address | build | started_at | updated_at | locality | is_available | is_live +----+-----------------------+-----------------------+---------+----------------------------------+----------------------------------+----------+--------------+---------+ 1 | 192.168.180.130:26257 | 192.168.180.130:26257 | v19.2.4 | 2020-03-24 03:07:58.660822+00:00 | 2020-03-24 03:17:34.650296+00:00 | | true | true
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集群验证
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登录第一个节点
./cockroach sql --insecure --host=192.168.180.130
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创建数据库
root@192.168.180.130:26257/defaultdb> create database pandemic; CREATE DATABASE Time: 15.636534ms
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查看数据库
root@192.168.180.130:26257/defaultdb> show databases; database_name +---------------+ defaultdb pandemic postgres system (4 rows) Time: 1.049492ms
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创建表
create table pandemic.countries(id int not null primary key, country_name varchar(20), comfirmed_cases int, total_deaths int, total_recovered int);
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插入数据
insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(1,'China', 81498, 3274, 72822); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(2,'Italy', 63927, 6077, 7432); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(3,'United State', 43901, 610, 0); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(4,'Spain', 35136, 2311, 3355); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(5,'Germany', 29056, 123, 453); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(6,'Iran', 23049, 1812, 8376); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(7,'France', 20123, 862, 2207); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(8,'South Korea', 8961, 111, 3507); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(9,'Switzerland', 8795, 120, 131); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(10,'United Kingdom', 67267, 336, 140); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(11,'Netherlands', 4764, 214, 3); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(12,'Austria', 4474, 21, 9); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(13,'Belgium', 3743, 88, 401); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(14,'Norway', 2621, 10, 6); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(15,'Canada', 2621, 25, 0); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(16,'Portugal', 2060, 23, 14); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(17,'Sweden', 2046, 27, 16); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(18,'Brazil', 1924, 34, 2); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(19,'Australia', 1924, 7, 119); insert into pandemic.countries(id,country_name,comfirmed_cases,total_deaths,total_recovered)values(20,'Denmark', 1572, 24, 24);
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查看数据
root@192.168.180.130:26257/defaultdb> select * from pandemic.countries; id | country_name | comfirmed_cases | total_deaths | total_recovered +----+----------------+-----------------+--------------+-----------------+ 1 | China | 81498 | 3274 | 72822 2 | Italy | 63927 | 6077 | 7432 3 | United State | 43901 | 610 | 0 4 | Spain | 35136 | 2311 | 3355 5 | Germany | 29056 | 123 | 453 6 | Iran | 23049 | 1812 | 8376 7 | France | 20123 | 862 | 2207 8 | South Korea | 8961 | 111 | 3507 9 | Switzerland | 8795 | 120 | 131 10 | United Kingdom | 67267 | 336 | 140 11 | Netherlands | 4764 | 214 | 3 12 | Austria | 4474 | 21 | 9 13 | Belgium | 3743 | 88 | 401 14 | Norway | 2621 | 10 | 6 15 | Canada | 2621 | 25 | 0 16 | Portugal | 2060 | 23 | 14 17 | Sweden | 2046 | 27 | 16 18 | Brazil | 1924 | 34 | 2 19 | Australia | 1924 | 7 | 119 20 | Denmark | 1572 | 24 | 24
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查找死亡率最低和最高的国家
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死亡率最低的国家
select country_name, total_deaths/comfirmed_cases as death_rate from pandemic.countries order by death_rate asc limit 1;
- 查询结果
country_name | death_rate +--------------+--------------------------+ Australia | 0.0036382536382536382536 (1 row)
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死亡率最高的国家
select country_name, total_deaths/comfirmed_cases as death_rate from pandemic.countries order by death_rate desc limit 1;
- 查询结果
country_name | death_rate +--------------+-------------------------+ Italy | 0.095061554585699313279 (1 row)
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查找治愈率最高和最低的国家
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治愈率最低的国家
select country_name, total_recovered/comfirmed_cases as recover_rate from pandemic.countries order by recover_rate asc limit 1;
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查询结果
country_name | recover_rate +--------------+--------------+ United State | 0 (1 row)
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治愈率最高的国家
select country_name, total_recovered/comfirmed_cases as recover_rate from pandemic.countries order by recover_rate desc limit 1;
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查询结果
country_name | recover_rate +--------------+------------------------+ China | 0.89354339983803283516 (1 row)
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登录其他节点查看数据
cd /opt/ronnie/cockroach ./cockroach sql --insecure --host=192.168.180.130 root@192.168.180.130:26257/defaultdb> select * from pandemic.countries; id | country_name | comfirmed_cases | total_deaths | total_recovered +----+----------------+-----------------+--------------+-----------------+ 1 | China | 81498 | 3274 | 72822 2 | Italy | 63927 | 6077 | 7432 3 | United State | 43901 | 610 | 0 4 | Spain | 35136 | 2311 | 3355 5 | Germany | 29056 | 123 | 453 6 | Iran | 23049 | 1812 | 8376 7 | France | 20123 | 862 | 2207 8 | South Korea | 8961 | 111 | 3507 9 | Switzerland | 8795 | 120 | 131 10 | United Kingdom | 67267 | 336 | 140 11 | Netherlands | 4764 | 214 | 3 12 | Austria | 4474 | 21 | 9 13 | Belgium | 3743 | 88 | 401 14 | Norway | 2621 | 10 | 6 15 | Canada | 2621 | 25 | 0 16 | Portugal | 2060 | 23 | 14 17 | Sweden | 2046 | 27 | 16 18 | Brazil | 1924 | 34 | 2 19 | Australia | 1924 | 7 | 119 20 | Denmark | 1572 | 24 | 24 (20 rows) Time: 2.119906ms root@192.168.180.130:26257/defaultdb> select * from pandemic.countries; id | country_name | comfirmed_cases | total_deaths | total_recovered +----+----------------+-----------------+--------------+-----------------+ 1 | China | 81498 | 3274 | 72822 2 | Italy | 63927 | 6077 | 7432 3 | United State | 43901 | 610 | 0 4 | Spain | 35136 | 2311 | 3355 5 | Germany | 29056 | 123 | 453 6 | Iran | 23049 | 1812 | 8376 7 | France | 20123 | 862 | 2207 8 | South Korea | 8961 | 111 | 3507 9 | Switzerland | 8795 | 120 | 131 10 | United Kingdom | 67267 | 336 | 140 11 | Netherlands | 4764 | 214 | 3 12 | Austria | 4474 | 21 | 9 13 | Belgium | 3743 | 88 | 401 14 | Norway | 2621 | 10 | 6 15 | Canada | 2621 | 25 | 0 16 | Portugal | 2060 | 23 | 14 17 | Sweden | 2046 | 27 | 16 18 | Brazil | 1924 | 34 | 2 19 | Australia | 1924 | 7 | 119 20 | Denmark | 1572 | 24 | 24 (20 rows) Time: 2.5979ms root@192.168.180.130:26257/defaultdb> select * from pandemic.countries; id | country_name | comfirmed_cases | total_deaths | total_recovered +----+----------------+-----------------+--------------+-----------------+ 1 | China | 81498 | 3274 | 72822 2 | Italy | 63927 | 6077 | 7432 3 | United State | 43901 | 610 | 0 4 | Spain | 35136 | 2311 | 3355 5 | Germany | 29056 | 123 | 453 6 | Iran | 23049 | 1812 | 8376 7 | France | 20123 | 862 | 2207 8 | South Korea | 8961 | 111 | 3507 9 | Switzerland | 8795 | 120 | 131 10 | United Kingdom | 67267 | 336 | 140 11 | Netherlands | 4764 | 214 | 3 12 | Austria | 4474 | 21 | 9 13 | Belgium | 3743 | 88 | 401 14 | Norway | 2621 | 10 | 6 15 | Canada | 2621 | 25 | 0 16 | Portugal | 2060 | 23 | 14 17 | Sweden | 2046 | 27 | 16 18 | Brazil | 1924 | 34 | 2 19 | Australia | 1924 | 7 | 119 20 | Denmark | 1572 | 24 | 24 (20 rows) Time: 2.077044ms root@192.168.180.130:26257/defaultdb> select * from pandemic.countries; id | country_name | comfirmed_cases | total_deaths | total_recovered +----+----------------+-----------------+--------------+-----------------+ 1 | China | 81498 | 3274 | 72822 2 | Italy | 63927 | 6077 | 7432 3 | United State | 43901 | 610 | 0 4 | Spain | 35136 | 2311 | 3355 5 | Germany | 29056 | 123 | 453 6 | Iran | 23049 | 1812 | 8376 7 | France | 20123 | 862 | 2207 8 | South Korea | 8961 | 111 | 3507 9 | Switzerland | 8795 | 120 | 131 10 | United Kingdom | 67267 | 336 | 140 11 | Netherlands | 4764 | 214 | 3 12 | Austria | 4474 | 21 | 9 13 | Belgium | 3743 | 88 | 401 14 | Norway | 2621 | 10 | 6 15 | Canada | 2621 | 25 | 0 16 | Portugal | 2060 | 23 | 14 17 | Sweden | 2046 | 27 | 16 18 | Brazil | 1924 | 34 | 2 19 | Australia | 1924 | 7 | 119 20 | Denmark | 1572 | 24 | 24 (20 rows) Time: 2.177364ms
- 看到数据都是一致的就OK了。
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可视化UI界面
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默认端口为8080, 可以在启动时自行修改
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集群总览
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度量指标
- 包括 SQL查询, 执行SQL的延迟, 每个节点的副本数, 事件的记录等。
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数据库
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对操作的一些陈述, 包括底层的一些执行
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点进去可以看到底层的一些操作
- 比如使用了Hash Join, 渲染, 虚拟表, 过滤 等等。
- 任务跑了多久, 预计多少延迟, 实际多少延迟, 执行次数, 重试次数, 最大重试次数......
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任务
来源：https://www.cnblogs.com/ronnieyuan/p/12558260.html