MySQL:8.0 在 Docker 中初始化的时间异常答案

【问题标题】：MySQL:8.0 is taking unusual time to Initialize in DockerMySQL:8.0 在 Docker 中初始化的时间异常
【发布时间】：2018-09-18 18:49:38
【问题描述】：

官方mysql:8.0（又名8.0.4）图像在docker（本地机器）中初始化数据库需要异常时间（大约10+分钟）。

如果您仔细查看日志的时间，最后一行需要 7 分钟才能执行。

Initializing database
2018-04-09T10:00:29.926078Z 0 [Warning] [MY-011070] Disabling symbolic links using --skip-symbolic-links (or equivalent) is the default. Consider not using this option as it is deprecated and will be removed in a future release.
2018-04-09T10:00:29.926165Z 0 [System] [MY-010116] /usr/sbin/mysqld (mysqld 8.0.4-rc) starting as process 30 ...
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
2018-04-09T10:00:46.842725Z 0 [Warning] [MY-010068] CA certificate ca.pem is self signed.
2018-04-09T10:00:46.903128Z 5 [Warning] [MY-010453] root@localhost is created with an empty password ! Please consider switching off the --initialize-insecure option.
2018-04-09T10:07:28.643932Z 5 [Warning] [MY-010315] 'user' entry 'mysql.infoschema@localhost' ignored in --skip-name-resolve mode.

请注意，在同一台机器上，mysql:8.0.3 根本不需要太多时间来初始化数据库。

这是我的配置：

操作系统： ubuntu 16.04

$ docker version
Client:
 Version:   17.12.1-ce
 API version:   1.35
 Go version:    go1.9.4
 Git commit:    7390fc6
 Built: Tue Feb 27 22:17:40 2018
 OS/Arch:   linux/amd64

Server:
 Engine:
  Version:  17.12.1-ce
  API version:  1.35 (minimum version 1.12)
  Go version:   go1.9.4
  Git commit:   7390fc6
  Built:    Tue Feb 27 22:16:13 2018
  OS/Arch:  linux/amd64
  Experimental: false

重新创建和完整日志的过程：

$ docker pull mysql:8.0
8.0: Pulling from library/mysql
2a72cbf407d6: Pull complete 
38680a9b47a8: Pull complete 
4c732aa0eb1b: Pull complete 
c5317a34eddd: Pull complete 
f92be680366c: Pull complete 
e8ecd8bec5ab: Pull complete 
2a650284a6a8: Pull complete 
5127cdce4b46: Pull complete 
e20139ed3159: Pull complete 
4c9ba8a8a3da: Pull complete 
16cd0f3afb27: Pull complete 
0e4872d58e1f: Pull complete 
Digest: sha256:7004063f8bd0c7bade8d1c526b9b8f5188c8288f411d76ee4ba83131e00c6f02
Status: Downloaded newer image for mysql:8.0

$ docker run --name some-mysql -e MYSQL_ROOT_PASSWORD=my-secret-pw -d mysql:8.0
b9c5d67233743dc085c50244526f5b12bd862cd50cdc0cb889b2dc549c4a396d

$ docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
b9c5d6723374        mysql:8.0           "docker-entrypoint.s…"   5 seconds ago       Up 3 seconds        3306/tcp            some-mysql

$ docker logs -f b9c5d6723374
Initializing database
2018-04-09T10:00:29.926078Z 0 [Warning] [MY-011070] Disabling symbolic links using --skip-symbolic-links (or equivalent) is the default. Consider not using this option as it is deprecated and will be removed in a future release.
2018-04-09T10:00:29.926165Z 0 [System] [MY-010116] /usr/sbin/mysqld (mysqld 8.0.4-rc) starting as process 30 ...
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
2018-04-09T10:00:46.842725Z 0 [Warning] [MY-010068] CA certificate ca.pem is self signed.
2018-04-09T10:00:46.903128Z 5 [Warning] [MY-010453] root@localhost is created with an empty password ! Please consider switching off the --initialize-insecure option.
2018-04-09T10:07:28.643932Z 5 [Warning] [MY-010315] 'user' entry 'mysql.infoschema@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:28.644008Z 5 [Warning] [MY-010315] 'user' entry 'mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:28.644033Z 5 [Warning] [MY-010315] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:28.644051Z 5 [Warning] [MY-010315] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:28.644082Z 5 [Warning] [MY-010323] 'db' entry 'performance_schema mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:28.644094Z 5 [Warning] [MY-010323] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:28.644112Z 5 [Warning] [MY-010311] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:28.644240Z 5 [Warning] [MY-010330] 'tables_priv' entry 'user mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:28.644257Z 5 [Warning] [MY-010330] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode.
Database initialized
MySQL init process in progress...
2018-04-09T10:07:44.797619Z 0 [Warning] [MY-011070] Disabling symbolic links using --skip-symbolic-links (or equivalent) is the default. Consider not using this option as it is deprecated and will be removed in a future release.
2018-04-09T10:07:44.797712Z 0 [System] [MY-010116] /usr/sbin/mysqld (mysqld 8.0.4-rc-log) starting as process 64 ...
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
MySQL init process in progress...
2018-04-09T10:07:45.990317Z 0 [Warning] [MY-010068] CA certificate ca.pem is self signed.
2018-04-09T10:07:46.040103Z 0 [Warning] [MY-000000] Insecure configuration for --pid-file: Location '/var/run/mysqld' in the path is accessible to all OS users. Consider choosing a different directory.
2018-04-09T10:07:46.046970Z 0 [Warning] [MY-010315] 'user' entry 'mysql.infoschema@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.047013Z 0 [Warning] [MY-010315] 'user' entry 'mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.047029Z 0 [Warning] [MY-010315] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.047046Z 0 [Warning] [MY-010315] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.047078Z 0 [Warning] [MY-010323] 'db' entry 'performance_schema mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.047091Z 0 [Warning] [MY-010323] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.047107Z 0 [Warning] [MY-010311] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.050079Z 0 [Warning] [MY-010330] 'tables_priv' entry 'user mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.050115Z 0 [Warning] [MY-010330] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:46.058044Z 0 [System] [MY-010931] /usr/sbin/mysqld: ready for connections. Version: '8.0.4-rc-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 0  MySQL Community Server (GPL).
Warning: Unable to load '/usr/share/zoneinfo/iso3166.tab' as time zone. Skipping it.
Warning: Unable to load '/usr/share/zoneinfo/leap-seconds.list' as time zone. Skipping it.
Warning: Unable to load '/usr/share/zoneinfo/zone.tab' as time zone. Skipping it.
Warning: Unable to load '/usr/share/zoneinfo/zone1970.tab' as time zone. Skipping it.
2018-04-09T10:07:50.304129Z 9 [Warning] [MY-010315] 'user' entry 'mysql.infoschema@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:50.304156Z 9 [Warning] [MY-010315] 'user' entry 'mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:50.304166Z 9 [Warning] [MY-010315] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:50.304175Z 9 [Warning] [MY-010315] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:50.304197Z 9 [Warning] [MY-010323] 'db' entry 'performance_schema mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:50.304207Z 9 [Warning] [MY-010323] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:50.304218Z 9 [Warning] [MY-010311] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:50.304321Z 9 [Warning] [MY-010330] 'tables_priv' entry 'user mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:50.304332Z 9 [Warning] [MY-010330] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode.

2018-04-09T10:07:53.074527Z 0 [System] [MY-010910] /usr/sbin/mysqld: Shutdown complete.

MySQL init process done. Ready for start up.

2018-04-09T10:07:53.336773Z 0 [Warning] [MY-011070] Disabling symbolic links using --skip-symbolic-links (or equivalent) is the default. Consider not using this option as it is deprecated and will be removed in a future release.
2018-04-09T10:07:53.336883Z 0 [System] [MY-010116] /usr/sbin/mysqld (mysqld 8.0.4-rc-log) starting as process 1 ...
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
mbind: Operation not permitted
2018-04-09T10:07:54.704270Z 0 [Warning] [MY-010068] CA certificate ca.pem is self signed.
2018-04-09T10:07:54.833645Z 0 [Warning] [MY-000000] Insecure configuration for --pid-file: Location '/var/run/mysqld' in the path is accessible to all OS users. Consider choosing a different directory.
2018-04-09T10:07:54.841847Z 0 [Warning] [MY-010315] 'user' entry 'mysql.infoschema@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.841879Z 0 [Warning] [MY-010315] 'user' entry 'mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.841894Z 0 [Warning] [MY-010315] 'user' entry 'mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.841908Z 0 [Warning] [MY-010315] 'user' entry 'root@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.841931Z 0 [Warning] [MY-010323] 'db' entry 'performance_schema mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.841940Z 0 [Warning] [MY-010323] 'db' entry 'sys mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.841953Z 0 [Warning] [MY-010311] 'proxies_priv' entry '@ root@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.844864Z 0 [Warning] [MY-010330] 'tables_priv' entry 'user mysql.session@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.844947Z 0 [Warning] [MY-010330] 'tables_priv' entry 'sys_config mysql.sys@localhost' ignored in --skip-name-resolve mode.
2018-04-09T10:07:54.850382Z 0 [System] [MY-010931] /usr/sbin/mysqld: ready for connections. Version: '8.0.4-rc-log'  socket: '/var/run/mysqld/mysqld.sock'  port: 3306  MySQL Community Server (GPL).

此外，这个镜像在 minikube 中需要超过 25 分钟来初始化数据库。

Minikube 的配置：

环境：

Minikube 版本：v0.25.2
操作系统：Ubuntu 16.04.4 LTS
VM 驱动程序：虚拟机
ISO 版本：minikube-v0.25.1.iso

我使用的yaml文件：

apiVersion: v1
kind: Namespace
metadata:
  name: demo
spec:
  finalizers:
  - kubernetes
---
apiVersion: v1
kind: Service
metadata:
  name: mysql-gvr
  namespace: demo
spec:
  clusterIP: None
  sessionAffinity: None
  type: ClusterIP

---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  labels:
    app: mysql
  name: mysql-8
  namespace: demo
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql
  serviceName: mysql-gvr
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - env:
        - name: MYSQL_ROOT_PASSWORD
          value : "test"
        image: mysql:8.0
        name: mysql
        ports:
        - containerPort: 3306
          name: db
          protocol: TCP
        volumeMounts:
        - mountPath: /var/lib/mysql
          name: data
  volumeClaimTemplates:
  - metadata:
      annotations:
        volume.beta.kubernetes.io/storage-class: standard
      name: data
    spec:
      accessModes:
      - ReadWriteOnce
      resources:
        requests:
          storage: 1Gi
      storageClassName: standard
---
apiVersion: v1
kind: Service
metadata:
  name: mysql
  namespace: demo
  labels:
    name: mysql
spec:
  ports:
    - port: 3306
  selector:
    name: mysql

这是因为mysql:8.0.4 正在使用新的基础映像debian:stretch？任何指南将不胜感激。

我还在 github docker-library/mysql 存储库中创建了一个问题来跟踪问题。这是issue link。

【问题讨论】：

是否可能存在网络/DNS 问题？或者可能存储速度很慢？一个明显的原因是机器动力不足，例如云提供商上的共享 vCPU。在 GCP 上的 n1-standard-1 机器上，拉取时间不到 10 秒，第一次启动（数据库初始化）是 30 秒，后续启动（数据库已经初始化）不到 3 秒。
看起来这是个问题，因为存储速度慢。

标签： mysql docker kubernetes minikube

【解决方案1】：

看起来，这是一个存储速度慢的问题。将我的磁盘升级到 SSD 后，等待时间大大改善。

在我之前和当前的设置中，我的 minikube 内存都是 4GB。但是，SSD 正在产生巨大的影响。

【讨论】：