docker如何对已经启动的容器添加目录映射(挂载目录)
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1. 背景
在自己安装sharding-proxy时,使用的方式启动时,只挂载了- /opt/shardingsphere-proxy/conf
复制代码 和- /opt/shardingsphere-proxy/ext-lib
复制代码 这两个目录,忘记挂载- /opt/shardingsphere-proxy/logs
复制代码 日志目录,导致每次查看都得要进入容器内部去查看,很是麻烦,于是考虑如何在不删除容器重新启动部署的情况下进行新目录的映射与挂载
2. 开始新增挂载目录
1.查看容器存放目录
- [root@iZ2zedqr9yeos47fg4uor5Z proxy-a]# docker info | grep 'Root'
- Docker Root Dir: /var/lib/docker
- [root@iZ2zedqr9yeos47fg4uor5Z proxy-a]#
复制代码 2.查看要新增挂载的容器id
- [root@iZ2zedqr9yeos47fg4uor5Z proxy-a]# docker ps
- CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
- 6f5f3c195304 apache/shardingsphere-proxy:5.1.1 "/bin/sh -c '${LOCAL…" 4 days ago Up 9 minutes 0.0.0.0:3321->3307/tcp server-proxy-a
复制代码 3.进入要新增文件夹挂载的目录
- [root@iZ2zedqr9yeos47fg4uor5Z proxy-a]# docker ps
- CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
- 6f5f3c195304 apache/shardingsphere-proxy:5.1.1 "/bin/sh -c '${LOCAL…" 4 days ago Up 11 minutes 0.0.0.0:3321->3307/tcp server-proxy-a
- [root@iZ2zedqr9yeos47fg4uor5Z proxy-a]# cd /var/lib/docker/containers/
- [root@iZ2zedqr9yeos47fg4uor5Z containers]# ll
- total 64
- drwx------ 4 root root 4096 Nov 7 14:20 1d0c21204385f60fa8859b0ff199569988218e449155634470cfb14ff2ceebf9
- drwx------ 4 root root 4096 Nov 7 14:20 21a5f8b6e68ee09f8f80381c536b38abec1b8dcb81c69f1c50caeb95e8ebb35f
- drwx------ 4 root root 4096 Nov 7 14:20 28242c9fd16bd610880d42a773e078221a0d34b1c779935fc0c8609a1b63666a
- drwx------ 4 root root 4096 Nov 7 14:22 2bc290c8e158229fdc5291a3ea53c5721f5becd39c8cb47cb2f826f6349ac778
- drwx------ 4 root root 4096 Nov 7 14:20 2fc0e1b1031abe6b1871332b971ccdc40185b7441e94ba3c266f51d2d4728412
- drwx------ 4 root root 4096 Nov 7 14:20 3124c345f129a3c542423c68061c6ded5b41a649b25991125c8e81da7b010e7e
- drwx------ 4 root root 4096 Nov 7 14:20 4a1e699a3711b92918f711d7ab021a5ac62bab1b8353ed321337c6f94ac50533
- drwx------ 4 root root 4096 Nov 7 14:20 4cdc6456250a922e60f3394b26064be0541f04a0c34825c6487e73ed7979705a
- drwx------ 4 root root 4096 Nov 7 14:20 53d710c37c08b9c2ab0c84fea2059d067bbcbc38f22aa2e654e1c62758b1df44
- drwx------ 4 root root 4096 Nov 7 14:41 6f5f3c1953044043672723cdf4f3725c500e77a54e07cd0a4759371c04c0cfa1
- drwx------ 4 root root 4096 Nov 7 14:20 73cc941fd394d42b8cbdc8fd7a50fc098b5d56c0323e5b9a786703d21a102d33
- drwx------ 4 root root 4096 Nov 7 14:35 8dc6124199b0ef6afbc9d2b542c5a46c8767e7daafd52bfedd53a83491e17db0
- drwx------ 4 root root 4096 Nov 7 14:20 9c554d94d5eb6c2c6015994b52ae3f3c31d182dde189d86427840b4a1c5d6477
- drwx------ 4 root root 4096 Nov 7 14:20 a073fcd724623a98168564707dccfb9562d94d89c0882ad2fd92798a2137be0d
- drwx------ 4 root root 4096 Nov 7 14:21 b1191679d1ecea73a74f44ee74b33281fbcccc942307630db02f2cb9e86869d0
- drwx------ 4 root root 4096 Nov 7 14:20 eb30519b4804f9ca3c708260e885f99d693332af4a162a956952b601332fed97
- [root@iZ2zedqr9yeos47fg4uor5Z containers]# cd 6f5f3c1953044043672723cdf4f3725c500e77a54e07cd0a4759371c04c0cfa1/
- [root@iZ2zedqr9yeos47fg4uor5Z 6f5f3c1953044043672723cdf4f3725c500e77a54e07cd0a4759371c04c0cfa1]# ll
- total 488
- -rw-r----- 1 root root 461990 Nov 7 14:41 6f5f3c1953044043672723cdf4f3725c500e77a54e07cd0a4759371c04c0cfa1-json.log
- drwx------ 2 root root 4096 Nov 2 22:29 checkpoints
- -rw------- 1 root root 4041 Nov 7 14:41 config.v2.json
- -rw-r--r-- 1 root root 1705 Nov 7 14:41 hostconfig.json
- -rw-r--r-- 1 root root 13 Nov 7 14:41 hostname
- -rw-r--r-- 1 root root 174 Nov 7 14:41 hosts
- drwx------ 2 root root 4096 Nov 2 22:29 mounts
- -rw-r--r-- 1 root root 149 Nov 7 14:41 resolv.conf
- -rw-r--r-- 1 root root 71 Nov 7 14:41 resolv.conf.hash
- [root@iZ2zedqr9yeos47fg4uor5Z 6f5f3c1953044043672723cdf4f3725c500e77a54e07cd0a4759371c04c0cfa1]#
复制代码 我们将要修改的文件就是和
4.关闭容器、关闭docker
5.修改config.v2.json
说明:想要将容器中的- /opt/shardingsphere-proxy/logs
复制代码 目录映射到宿主机的- /atguigu/server/proxy-a/logs
复制代码 目录下。
在文件中找到MountPoints,添加如下- /opt/shardingsphere-proxy/logs
复制代码 的映射即可(这里如果前面还有内容的话,注意逗号)- {
- ......
-
- "MountPoints": {
- ......,
- "/opt/shardingsphere-proxy/logs": {
- "Source": "/atguigu/server/proxy-a/logs",
- "Destination": "/opt/shardingsphere-proxy/logs",
- "RW": true,
- "Name": "",
- "Driver": "",
- "Type": "bind",
- "Propagation": "rprivate",
- "Spec": {
- "Type": "bind",
- "Source": "/atguigu/server/proxy-a/logs",
- "Target": "/opt/shardingsphere-proxy/logs"
- },
- "SkipMountpointCreation": false
- }
- },
-
- ......
-
- }
复制代码 6.修改hostconfig.json
说明:中添加内容- "/atguigu/server/proxy-a/logs:/opt/shardingsphere-proxy/logs"
复制代码- {
- "Binds": [
- ......,
- "/atguigu/server/proxy-a/logs:/opt/shardingsphere-proxy/logs"
- ],
- ......
- }
复制代码 7.重启docker与容器
8.进行目录验证
目录成功映射 出来,查看日志就不用每次很麻烦的进入容器内部查看了- [root@iZ2zedqr9yeos47fg4uor5Z logs]# pwd
- /atguigu/server/proxy-a/logs
- [root@iZ2zedqr9yeos47fg4uor5Z logs]# ll
- total 36
- -rw-r--r-- 1 root root 36421 Nov 7 14:41 stdout.log
- -rw-r--r-- 1 root root 0 Nov 7 14:41 xa_tx1.log
- -rw-r--r-- 1 root root 0 Nov 7 14:41 xa_tx.lck
- [root@iZ2zedqr9yeos47fg4uor5Z logs]#
复制代码 3. 注意
- config.v2.json和hostconfig.json文件修改之前,需要关闭docker与容器!如果先修改了这两个文件,再关闭docker,这两个文件中的内容会被重置掉,导致新增的目录映射失效 (自己在这里折腾了很久才发现的!)
- config.v2.json和hostconfig.json文件vi命令打开后,并非格式化后的json,这里可以通过:%!python3 -m json.tool命令将其进行格式化,方便查看
总结
到此这篇关于docker如何对已经启动的容器添加目录映射(挂载目录)的文章就介绍到这了,更多相关docker容器添加目录映射内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!
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发表于 2023-2-25 10:59:21
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