Jq修改docker-daemon.json开启关闭live-restore：修订间差异
来自三线的随记
小无编辑摘要 |
小无编辑摘要 |
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| （未显示同一用户的5个中间版本） | |||
| 第1行： | 第1行： | ||
use jq tool to enable or disable docker live-restore feature | use jq tool to enable or disable docker live-restore feature / aka: use jq tool to edit json file | ||
<br /> | <br /> | ||
===enable=== | ===enable=== | ||
jq '. + {"live-restore": true}' /etc/docker/daemon.json | |||
==== modify the config file ==== | |||
cat <<< $( jq '. + {"live-restore": true}' /etc/docker/daemon.json ) > /etc/docker/daemon.json | |||
# Format file (If required) | |||
jq <<< $(cat /etc/docker/daemon.json ) > /etc/docker/daemon.json | |||
or in one command line: | |||
jq '. + {"live-restore": true}' <<< $(cat /etc/docker/daemon.json ) > /etc/docker/daemon.json | |||
or in one command line: | |||
jq '. + {"live-restore": true}' /etc/docker/daemon.json | awk '{print > "/etc/docker/daemon.json"}' | |||
tee 也可以实现一条命令结合jq改写json文件，懒得拼装了..<br /> | |||
==== modify and enable the live restore feature ==== | |||
jq '. + {"live-restore": true}' <<< $(cat /etc/docker/daemon.json ) > /etc/docker/daemon.json | |||
systemctl reload docker | systemctl reload docker | ||
docker info | grep -i | docker info | grep -i liv<br /> | ||
<br /> | |||
===disable=== | ===disable=== | ||
jq '. + {"live-restore": false}' /etc/docker/daemon.json | jq '. + {"live-restore": false}' <<< $(cat /etc/docker/daemon.json ) > /etc/docker/daemon.json | ||
kill -SIGHUP $(pidof dockerd) | kill -SIGHUP $(pidof dockerd) | ||
docker info | grep Live | docker info | grep Live | ||
<br /> | <br /> | ||
=== more examples === | ===Other matters requiring attention=== | ||
对于挂载了/var/run/docker.sock的容器，需要手动重启 (挂载的是目录的话不会有这个问题) | |||
docker挂载文件的机制是绑定主机上该文件的 inode。 | |||
当docker-engine热重启，docker.sock文件的inode值会改变，所以挂载会失效 | |||
====Workaround==== | |||
查看该主机上直接挂载 docker.sock 的容器 | |||
docker inspect $(docker ps -q)|grep 'Source.*docker.sock\|Name": "/'|grep sock -B1|grep Name | |||
重启之 | |||
<br /> | |||
===more examples=== | |||
https://gist.github.com/joar/776b7d176196592ed5d8 | https://gist.github.com/joar/776b7d176196592ed5d8 | ||
<br /> | |||
[[分类:Linux]] | [[分类:Linux]] | ||
[[分类:Docker]] | [[分类:Docker]] | ||
{{DEFAULTSORT:jq}} | {{DEFAULTSORT:jq}} | ||
2022年1月14日 (五) 16:11的最新版本
use jq tool to enable or disable docker live-restore feature / aka: use jq tool to edit json file
enable
modify the config file
cat <<< $( jq '. + {"live-restore": true}' /etc/docker/daemon.json ) > /etc/docker/daemon.json
# Format file (If required)
jq <<< $(cat /etc/docker/daemon.json ) > /etc/docker/daemon.json
or in one command line:
jq '. + {"live-restore": true}' <<< $(cat /etc/docker/daemon.json ) > /etc/docker/daemon.json
or in one command line:
jq '. + {"live-restore": true}' /etc/docker/daemon.json | awk '{print > "/etc/docker/daemon.json"}'
tee 也可以实现一条命令结合jq改写json文件，懒得拼装了..
modify and enable the live restore feature
jq '. + {"live-restore": true}' <<< $(cat /etc/docker/daemon.json ) > /etc/docker/daemon.json
systemctl reload docker
docker info | grep -i liv
disable
jq '. + {"live-restore": false}' <<< $(cat /etc/docker/daemon.json ) > /etc/docker/daemon.json
kill -SIGHUP $(pidof dockerd)
docker info | grep Live
Other matters requiring attention
对于挂载了/var/run/docker.sock的容器，需要手动重启 (挂载的是目录的话不会有这个问题)
docker挂载文件的机制是绑定主机上该文件的 inode。
当docker-engine热重启，docker.sock文件的inode值会改变，所以挂载会失效
Workaround
查看该主机上直接挂载 docker.sock 的容器
docker inspect $(docker ps -q)|grep 'Source.*docker.sock\|Name": "/'|grep sock -B1|grep Name
重启之
more examples
https://gist.github.com/joar/776b7d176196592ed5d8
