我有以下快递/节点应用程序:
FROM node:12
WORKDIR /usr/share/jtapp
COPY package*.json ./
RUN apt-get update
RUN apt-get install -y net-tools
RUN npm install
RUN npm install pm2@latest -g
#RUN npm ci --only=production
COPY . .
EXPOSE 3000
RUN pm2 start server.js
看起来构建得很好。但是当我启动图像并通过 bash 附加时,没有 pm2 进程在运行。
以下是构建的结果:
Sending build context to Docker daemon 319.5kB Step 1/10 : FROM node:12 ---> cfcf3e70099d Step 2/10 : WORKDIR /usr/share/jtapp ---> Using cache ---> 2c2e2e1e92f2 Step 3/10 : COPY package*.json ./ ---> Using cache ---> 57829fd5e9d7 Step 4/10 : RUN apt-get update ---> Using cache ---> c0bbfed43ca8 Step 5/10 : RUN apt-get install -y net-tools ---> Using cache ---> 0b34759d8298 Step 6/10 : RUN npm install ---> Using cache ---> 6abc42a9f8a3 Step 7/10 : RUN npm install pm2@latest -g ---> Running in 2fafacd302bf /usr/local/bin/pm2 -> /usr/local/lib/node_modules/pm2/bin/pm2 /usr/local/bin/pm2-dev -> /usr/local/lib/node_modules/pm2/bin/pm2-dev /usr/local/bin/pm2-docker -> /usr/local/lib/node_modules/pm2/bin/pm2-docker /usr/local/bin/pm2-runtime -> /usr/local/lib/node_modules/pm2/bin/pm2-runtime
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@~2.1.2 (node_modules/pm2/node_modules/chokidar/node_modules/fsevents):
npm WARN notsup SKIPPING OPTIONAL DEPENDENCY: Unsupported platform for [email protected] /cdn-cgi/l/email-protection: wanted {"os":"darwin","arch":"any"} (current: {"os":"linux","arch":"x64"})
+ [email protected] /cdn-cgi/l/email-protection
added 185 packages from 191 contributors in 10.165s
Removing intermediate container 2fafacd302bf
---> 11d15b993ca2
Step 8/10 : COPY . .
---> efab8283bbd9
Step 9/10 : EXPOSE 3000
---> Running in aae343a75727
Removing intermediate container aae343a75727
---> b97825863317
Step 10/10 : RUN pm2 start server.js
---> Running in f0d14c61a3a6
[PM2] Spawning PM2 daemon with pm2_home=/root/.pm2
[PM2] PM2 Successfully daemonized
[PM2] Starting /usr/share/jtapp/server.js in fork_mode (1 instance)
[PM2] Done.
┌─────┬───────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name │ namespace │ version │ mode │ pid │ uptime │ ↺ │ status │ cpu │ mem │ user │ watching │
├─────┼───────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0 │ server │ default │ 1.0.0 │ fork │ 28 │ 0s │ 0 │ online │ 0% │ 28.2mb │ root │ disabled │
└─────┴───────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
Removing intermediate container f0d14c61a3a6
---> 859f8479f3a6
Successfully built 859f8479f3a6
然后这就是我启动容器并附加到它的方式:
lab:/var/lib/git/jtapp# docker run -d -it --name jtapp -p 3000:3000 jtapp bash
d62927716ab593376c4e38f7d4d05007223ce2adfcb4997e722b81ad7260f114
lab:/var/lib/git/jtapp # docker exec -it jtapp bash
root@d62927716ab5:/usr/share/jtapp # pm2
usage: pm2 [options] <command>
pm2 -h, --help all available commands and options
pm2 examples display pm2 usage examples
pm2 <command> -h help on a specific command
Access pm2 files in ~/.pm2
root@d62927716ab5:/usr/share/jtapp #
但是一旦我进入容器,我就可以手动启动一切,如下所示:
root@d62927716ab5:/usr/share/jtapp# pm2 start server.js
[PM2] Spawning PM2 daemon with pm2_home=/root/.pm2
[PM2] PM2 Successfully daemonized
[PM2] Starting /usr/share/jtapp/server.js in fork_mode (1 instance)
[PM2] Done.
┌─────┬───────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name │ namespace │ version │ mode │ pid │ uptime │ ↺ │ status │ cpu │ mem │ user │ watching │
├─────┼───────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0 │ server │ default │ 1.0.0 │ fork │ 37 │ 0s │ 0 │ online │ 0% │ 28.4mb │ root │ disabled │
└─────┴───────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
EDIT 1
Changed:
RUN pm2 start server.js
to
CMD ["pm2", "start", "server.js"]
然后尝试重建/启动容器。
当我执行“pm2 ls”时,它仍然返回空。
root@a8b7eb21d307:/usr/share/jtapp# pm2 ls
[PM2] Spawning PM2 daemon with pm2_home=/root/.pm2
[PM2] PM2 Successfully daemonized
┌────┬────────────────────┬──────────┬──────┬───────────┬──────────┬──────────┐
│ id │ name │ mode │ ↺ │ status │ cpu │ memory │
└────┴────────────────────┴──────────┴──────┴───────────┴──────────┴──────────┘
EDIT 2
当我删除运行命令中的“-d”选项时:
lab:/var/lib/git/jtappd# docker run -it --name jtapp -p 3000:3000 jtapp bash
root@3cf4855372ec:/usr/share/jtapp# pm2 ls
[PM2] Spawning PM2 daemon with pm2_home=/root/.pm2
[PM2] PM2 Successfully daemonized
┌─────┬───────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name │ namespace │ version │ mode │ pid │ uptime │ ↺ │ status │ cpu │ mem │ user │ watching │
└─────┴───────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
root@3cf4855372ec:/usr/share/jtapp#
EDIT 3
所以 Dockerfile 现在看起来像这样:
FROM node:12
WORKDIR /usr/share/jtapp
COPY package*.json ./
RUN apt-get update
RUN apt-get install -y net-tools
RUN npm install
RUN npm install pm2@latest -g
COPY . .
EXPOSE 3000
CMD ["npm", "run", "start:pm2"]
Ecosystem.config.js 看起来像:
lab:/var/lib/git/jtapp# cat ecosystem.config.js
module.exports = {
apps: [{
name: 'jtapp',
script: './server.js', //entrypoint
instances: 1,
autorestart: true, // pm2 to restart if this app fails/stops
max_memory_restart: '1G'
}]
}
和 package.json 脚本部分:
1 {
2 "name": "nodeserver",
3 "version": "1.0.0",
4 "description": "simple node server",
5 "main": "index.js",
6 "scripts": {
7 "test": "echo \"Error: no test specified\" && exit 1",
8 "start": "nodemon server.js",
9 "start:pm2": "pm2 start ecosystem.config.js --no-daemon"
10 },
Dockerfile 构建时没有错误。但是当我启动容器时... server.js 没有运行。 pm2 已安装。
但是,一旦我登录到容器,使用生态系统文件手动启动它就没有问题,如下所示:
root@d51117d757a3:/usr/share/jtapp# pm2 start ecosystem.config.js
[PM2][WARN] Applications jtapp not running, starting...
[PM2] App [jtapp ] launched (1 instances)
┌─────┬──────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name │ namespace │ version │ mode │ pid │ uptime │ ↺ │ status │ cpu │ mem │ user │ watching │
├─────┼──────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0 │ jtapp │ default │ 1.0.0 │ cluster │ 36 │ 0s │ 0 │ online │ 0% │ 32.6mb │ root │ disabled │
└─────┴──────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘