-
Notifications
You must be signed in to change notification settings - Fork 120
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Browse files
Browse the repository at this point in the history
- Loading branch information
1 parent
78d4fe5
commit 66b1ee4
Showing
13 changed files
with
195 additions
and
19 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,94 @@ | ||
--- | ||
title: 为已有 TiDB 集群部署负载均衡 TiProxy | ||
summary: 了解如何在 Kubernetes 上为已有 TiDB 集群部署负载均衡 TiProxy。 | ||
--- | ||
|
||
# 为已有 TiDB 集群部署负载均衡 TiProxy | ||
|
||
本文介绍在 Kubernetes 上如何为已有的 TiDB 集群部署或删除 TiDB 负载均衡 [TiProxy](https://docs.pingcap.com/zh/tidb/v7.6/tiproxy/tiproxy-overview)。TiProxy 放置在客户端和 TiDB server 之间,为 TiDB 提供负载均衡、连接保持、服务发现等功能。 | ||
|
||
> **注意:** | ||
> | ||
> 如果尚未部署 TiDB 集群, 你可以在[配置 TiDB 集群](configure-a-tidb-cluster.md)时增加 TiProxy 相关配置,然后[部署 TiDB 集群](deploy-on-general-kubernetes.md),因此无需参考本文。 | ||
## 部署 TiProxy | ||
|
||
如果你需要在现有的 TiDB 集群上部署 TiProxy 组件,请进行以下操作: | ||
|
||
> **注意:** | ||
> | ||
> 如果服务器没有外网,请参考[部署 TiDB 集群](deploy-on-general-kubernetes.md#部署-tidb-集群)在有外网的机器上将 `pingcap/tiproxy` Docker 镜像下载下来并上传到服务器上, 然后使用 `docker load` 将 Docker 镜像安装到服务器上。 | ||
1. 编辑 TidbCluster Custom Resource (CR): | ||
|
||
``` shell | ||
kubectl edit tc ${cluster_name} -n ${namespace} | ||
``` | ||
|
||
2. 按照如下示例增加 TiProxy 配置: | ||
|
||
```yaml | ||
spec: | ||
tiproxy: | ||
baseImage: pingcap/tiproxy | ||
replicas: 3 | ||
``` | ||
|
||
3. 配置 TidbCluster CR 中 `spec.tiproxy.config` 的相关参数。例如: | ||
|
||
```yaml | ||
spec: | ||
tiproxy: | ||
config: | ||
config: | | ||
[log] | ||
level = "info" | ||
``` | ||
|
||
要获取更多可配置的 TiProxy 配置参数,请参考 [TiProxy 配置文档](https://docs.pingcap.com/zh/tidb/v7.6/tiproxy/tiproxy-configuration)。 | ||
|
||
TiProxy 启动后,可通过以下命令找到对应的 `tiproxy-sql` 负载均衡服务。 | ||
|
||
``` shell | ||
kubectl get svc -n ${namespace} | ||
``` | ||
|
||
## 移除 TiProxy | ||
|
||
如果你的 TiDB 集群不再需要 TiProxy,执行以下操作移除。 | ||
|
||
1. 执行以下命令修改 `spec.tiproxy.replicas` 为 `0` 来移除 TiProxy Pod。 | ||
|
||
```shell | ||
kubectl patch tidbcluster ${cluster_name} -n ${namespace} --type merge -p '{"spec":{"tiproxy":{"replicas": 0}}}' | ||
``` | ||
|
||
2. 检查 TiProxy Pod 状态。 | ||
|
||
```shell | ||
kubectl get pod -n ${namespace} -l app.kubernetes.io/component=tiproxy,app.kubernetes.io/instance=${cluster_name} | ||
``` | ||
|
||
如果输出为空,则表示 TiProxy 集群的 Pod 已经被成功删除。 | ||
|
||
3. 删除 TiProxy StatefulSet。 | ||
|
||
1. 使用以下命令修改 TiDB Cluster CR,删除 `spec.tiproxy` 字段。 | ||
|
||
```shell | ||
kubectl patch tidbcluster ${cluster_name} -n ${namespace} --type json -p '[{"op":"remove", "path":"/spec/tiproxy"}]' | ||
``` | ||
|
||
2. 使用以下命令删除 TiProxy StatefulSet: | ||
|
||
```shell | ||
kubectl delete statefulsets -n ${namespace} -l app.kubernetes.io/component=tiproxy,app.kubernetes.io/instance=${cluster_name} | ||
``` | ||
|
||
3. 执行以下命令,检查是否已经成功删除 TiProxy 集群的 StatefulSet: | ||
|
||
```shell | ||
kubectl get sts -n ${namespace} -l app.kubernetes.io/component=tiproxy,app.kubernetes.io/instance=${cluster_name} | ||
``` | ||
|
||
如果输出为空,则表示 TiProxy 集群的 StatefulSet 已经被成功删除。 |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Oops, something went wrong.