Mysql Helm图表不断重启

Question

我正在按照 helm 图表 运行在 azure aks 中运行的 Mysql 数据库。最初，数据库按预期运行，直到此日志开始出现：

[Warning] [MY-013360] [Server] Plugin mysql_native_password reported: ''mysql_native_password' is deprecated and will be removed in a future release. Please use caching_sha2_password instead'

应用了此处的建议来解决问题，但日志语句仍然出现

升级图表后，pod 继续关闭并显示以下日志：

[System] [MY-013172] [Server] Received SHUTDOWN from user <via user signal>. Shutting down mysqld (Version: 8.0.35).

这些是我添加到版本 9.14.1 的自定义值

architecture: replication
secondary:
  replicaCount: 2

metrics:
  enabled: true

我能够端口转发 mysql-metrics 服务，但不确定要在日志中查找什么。

这是一个小型数据库，由 5 个表组成，每个表不到 1000 行

查看命名空间的事件，发现内存不足：

The node was low on resource: memory. Container mysql was using 421440Ki, which exceeds its request of 0. Container metrics was using 15092Ki, which exceeds its request of 0.

但启用自动缩放后，Pod 仍会重新启动

Answer 1

警告仅供参考，不应导致 Pod 重新启动。您遇到的问题可能与其他一些配置问题有关。根据 Excessivelogging thread ，不要升级 helm，而是尝试创建一个新的命名空间，并在添加 test.yaml

后重新安装它。

它应该可以正常工作，正如您在日志中看到的那样 -

2023-10-27T09:44:21.538670Z 1 [System] [MY-013576] [InnoDB] InnoDB initialization has started.
2023-10-27T09:44:21.704571Z 1 [System] [MY-013577] [InnoDB] InnoDB initialization has ended.
2023-10-27T09:44:21.911205Z 0 [Warning] [MY-010068] [Server] CA certificate ca.pem is self signed.
2023-10-27T09:44:21.911239Z 0 [System] [MY-013602] [Server] Channel mysql_main configured to support TLS. Encrypted connections are now supported for this channel.
2023-10-27T09:44:21.926974Z 0 [System] [MY-011323] [Server] X Plugin ready for connections. Bind-address: '::' port: 33060, socket: /tmp/mysqlx.sock
2023-10-27T09:44:21.927008Z 0 [System] [MY-010931] [Server] /opt/bitnami/mysql/bin/mysqld: ready for connections. Version: '8.0.31'  socket: '/opt/bitnami/mysql/tmp/mysql.sock'  port: 3306  Source distribution.

我正在使用 mysql helm-chart，如下所示-

PS C:\Windows\system32> kubectl create namespace mysql
namespace/mysql created
PS C:\Windows\system32> kubectl get ns
NAME                STATUS   AGE
default             Active   16m
gatekeeper-system   Active   16m
kube-node-lease     Active   16m
kube-public         Active   16m
kube-system         Active   16m
mysql               Active   3s
PS C:\Windows\system32> kubectl config set-context --current --namespace=mysql
Context "MySQL" modified.
PS C:\Windows\system32> helm install mysql azure-marketplace/mysql
NAME: mysql
LAST DEPLOYED: Fri Oct 27 15:12:59 2023
NAMESPACE: mysql
STATUS: deployed
REVISION: 1
TEST SUITE: None
NOTES:
CHART NAME: mysql
CHART VERSION: 9.4.3
APP VERSION: 8.0.31

** Please be patient while the chart is being deployed **

Tip:

  Watch the deployment status using the command: kubectl get pods -w --namespace mysql

Services:

  echo Primary: mysql.mysql.svc.cluster.local:3306

Execute the following to get the administrator credentials:

  echo Username: root
  MYSQL_ROOT_PASSWORD=$(kubectl get secret --namespace mysql mysql -o jsonpath="{.data.mysql-root-password}" | base64 -d)

Pod 已启动

PS C:\Windows\system32> kubectl get pods
NAME           READY   STATUS    RESTARTS   AGE
mysql-0        1/1     Running   0          11m
mysql-client   1/1     Running   0          4m41s

可以访问数据库