带有 postgres 的 DOCKER 容器，警告：无法打开统计文件“pg_stat_tmp/global.stat”：不允许操作

问题描述

我有一个 DOCKER 容器，使用 .yml、Dockerfile(s) 等从几个不同的图像构建。到目前为止，一切都构建并运行良好，除了我在标题中看到的这个问题：>

index-db_1   | 2021-02-22 23:18:33.388 UTC [31] WARNING:  Could not open statistics file "pg_stat_tmp/global.stat": Operation not permitted

该数据库索引映射到主机上 Docker 包根目录中的一个文件夹，就数据库而言，其他一切似乎都可以正常工作。我使用的是 Mac，但如果我从 CLI 列出 DB 文件夹的权限，我会得到：

-rw-------@  1 sscotti  staff      3 Feb 22 11:01 PG_VERSION
drwx------@  6 sscotti  staff    192 Feb 22 11:54 base
drwx------@ 60 sscotti  staff   1920 Feb 22 16:00 global
drwx------@  2 sscotti  staff     64 Feb 22 11:01 pg_commit_ts
drwx------@  2 sscotti  staff     64 Feb 22 11:01 pg_dynshmem
-rw-------@  1 sscotti  staff   4782 Feb 22 11:02 pg_hba.conf
-rw-------@  1 sscotti  staff   1636 Feb 22 11:01 pg_ident.conf
drwx------@  5 sscotti  staff    160 Feb 22 17:46 pg_logical
drwx------@  4 sscotti  staff    128 Feb 22 11:01 pg_multixact
drwx------@  2 sscotti  staff     64 Feb 22 11:01 pg_notify
drwx------@  2 sscotti  staff     64 Feb 22 11:01 pg_replslot
drwx------@  2 sscotti  staff     64 Feb 22 11:01 pg_serial
drwx------@  2 sscotti  staff     64 Feb 22 11:01 pg_snapshots
drwx------@  2 sscotti  staff     64 Feb 22 16:00 pg_stat
drwx------@  5 sscotti  staff    160 Feb 22 17:50 pg_stat_tmp
drwx------@  3 sscotti  staff     96 Feb 22 11:01 pg_subtrans
drwx------@  2 sscotti  staff     64 Feb 22 11:01 pg_tblspc
drwx------@  2 sscotti  staff     64 Feb 22 11:01 pg_twophase
drwx------@  4 sscotti  staff    128 Feb 22 11:01 pg_wal
drwx------@  3 sscotti  staff     96 Feb 22 11:01 pg_xact
-rw-------@  1 sscotti  staff     88 Feb 22 11:01 postgresql.auto.conf
-rw-------@  1 sscotti  staff  28073 Feb 22 11:01 postgresql.conf
-rw-------@  1 sscotti  staff     36 Feb 22 16:00 postmaster.opts
-rw-------   1 sscotti  staff     94 Feb 22 16:00 postmaster.pid

pg_stat 文件夹实际上是空的。

和 pg_stat_temp 有：

-rw-------  1 sscotti  staff   1952 Feb 22 17:54 db_0.stat
-rw-------  1 sscotti  staff  20360 Feb 22 17:54 db_13395.stat
-rw-------  1 sscotti  staff   1151 Feb 22 17:54 global.stat

.yml 文件有这个：

  index-db:
      image: postgres
      restart: unless-stopped
      volumes:
          - ./OrthancIndex:/var/lib/postgresql/data

考虑到它是一个 Docker 容器，这是可以忽略的东西吗。

在 UBUNTU 上添加关于相同设置的评论。

数据库文件夹：

drwx------ 19 systemd-coredump root 4096 Jun 30 13:12 OrthancIndex

数据库：

drwx------ 6 systemd-coredump systemd-coredump  4096 Jun 11 13:00 base
drwx------ 2 systemd-coredump systemd-coredump  4096 Jun 30 13:12 global
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_commit_ts
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_dynshmem
-rw------- 1 systemd-coredump systemd-coredump  4782 Mar 12 16:12 pg_hba.conf
-rw------- 1 systemd-coredump systemd-coredump  1636 Mar 12 16:12 pg_ident.conf
drwx------ 4 systemd-coredump systemd-coredump  4096 Jul  1 13:27 pg_logical
drwx------ 4 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_multixact
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_notify
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_replslot
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_serial
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_snapshots
drwx------ 2 systemd-coredump systemd-coredump  4096 Jun 30 13:12 pg_stat
drwx------ 2 systemd-coredump systemd-coredump  4096 Jul  1 13:29 pg_stat_tmp
drwx------ 2 systemd-coredump systemd-coredump  4096 Jun 24 21:04 pg_subtrans
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_tblspc
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_twophase
-rw------- 1 systemd-coredump systemd-coredump     3 Mar 12 16:12 PG_VERSION
drwx------ 3 systemd-coredump systemd-coredump  4096 Jul  1 12:37 pg_wal
drwx------ 2 systemd-coredump systemd-coredump  4096 Mar 12 16:12 pg_xact
-rw------- 1 systemd-coredump systemd-coredump    88 Mar 12 16:12 postgresql.auto.conf
-rw------- 1 systemd-coredump systemd-coredump 28073 Mar 12 16:12 postgresql.conf
-rw------- 1 systemd-coredump systemd-coredump    36 Jun 30 13:12 postmaster.opts
-rw------- 1 systemd-coredump systemd-coredump    94 Jun 30 13:12 postmaster.pid

pg_stat_temp

-rw------- 1 systemd-coredump systemd-coredump  2660 Jul  1 13:30 db_0.stat
-rw------- 1 systemd-coredump systemd-coredump 31157 Jul  1 13:30 db_13395.stat
-rw------- 1 systemd-coredump systemd-coredump  1151 Jul  1 13:30 global.stat

我实际上在 UBUNTU 上遇到了同样的错误：

postgres_index-db_1   | 2021-07-01 18:06:45.140 UTC [266] WARNING:  Could not open statistics file "pg_stat_tmp/global.stat": Operation not permitted
postgres_index-db_1   | 2021-07-01 18:13:45.583 UTC [273] WARNING:  Could not open statistics file "pg_stat_tmp/global.stat": Operation not permitted
postgres_index-db2_1  | 2021-07-01 18:19:43.716 UTC [282] WARNING:  Could not open statistics file "pg_stat_tmp/global.stat": Operation not permitted
postgres_index-db2_1  | 2021-07-01 18:21:43.749 UTC [284] WARNING:  Could not open statistics file "pg_stat_tmp/global.stat": Operation not permitted

虽然这里的用户和组是 systemd-coredump。

解决方法

使用本地卷挂载需要 postgres 容器内的用户映射。 https://hub.docker.com/_/postgres README 中有一个标题为 Arbitrary --user Notes 的部分，描述了问题的解决方案。

列出的一个建议是使用 docker 卷，初始化已挂载的卷的内容，关闭容器映像，运行递归所有权更改，然后正常重启容器。

$ docker volume create pgdata
$ docker run -it --rm -v pgdata:/var/lib/postgresql/data -e POSTGRES_PASSWORD=mysecretpassword postgres
The files belonging to this database system will be owned by user "postgres".
...
( once it's finished initializing successfully and is waiting for connections,stop it )
$ docker run -it --rm -v pgdata:/var/lib/postgresql/data bash chown -R 1000:1000 /var/lib/postgresql/data
$ docker run -it --rm --user 1000:1000 -v pgdata:/var/lib/postgresql/data postgres