odo logs

Description

odo logs is used to display the logs for all the containers odo created for the component under current working directory.

Running the command

If you haven't already done so, you must initialize your source code with the odo init command. Next, run the odo dev command so that odo can create the resources on the Kubernetes cluster.

Consider a devfile.yaml like below which was used to create inner loop resources using odo dev. Notice that multiple containers have been named as main to show how odo logs would display logs when more than one containers have the same name:

metadata:
  description: Stack with Node.js 14
  displayName: Node.js Runtime
  icon: https://nodejs.org/static/images/logos/nodejs-new-pantone-black.svg
  language: javascript
  name: node
  projectType: nodejs
  tags:
    - NodeJS
    - Express
    - ubi8
  version: 1.0.1
schemaVersion: 2.0.0
starterProjects:
  - git:
      remotes:
        origin: https://github.com/odo-devfiles/nodejs-ex.git
    name: nodejs-starter
commands:
- exec:
    commandLine: npm install
    component: runtime
    group:
      isDefault: true
      kind: build
    workingDir: ${PROJECT_SOURCE}
  id: install
- exec:
    commandLine: npm start
    component: runtime
    group:
      isDefault: true
      kind: run
    workingDir: ${PROJECT_SOURCE}
  id: run
- exec:
    commandLine: npm run debug
    component: runtime
    group:
      isDefault: true
      kind: debug
    workingDir: ${PROJECT_SOURCE}
  id: debug
- exec:
    commandLine: npm test
    component: runtime
    group:
      isDefault: true
      kind: test
    workingDir: ${PROJECT_SOURCE}
  id: test
components:
- container:
    endpoints:
    - name: http-3000
      targetPort: 3000
    image: registry.access.redhat.com/ubi8/nodejs-14:latest
    memoryLimit: 1024Mi
    mountSources: true
  name: runtime
- name: infinitepodone
  kubernetes:  
    inlined: |
      apiVersion: v1
      kind: Pod
      metadata:
        name: infinitepodone
      spec:
        containers:
          - name: main
            image: docker.io/dharmit/infiniteloop
- name: infinitedeployment
  kubernetes:
    inlined: |
      apiVersion: apps/v1
      kind: Deployment
      metadata:
        name: infinitedeployment
      spec:
        replicas: 1
        selector:
          matchLabels:
            app: infinite
        template:
          metadata:
            labels:
              app: infinite
          spec:
            containers:
            - name: main
              image: docker.io/dharmit/infiniteloop

When you do odo dev, odo creates pods for:

1. The component named node itself. Containers for this are created using .components.container.
2. Kubernetes component named infinitepodone
3. Kubernetes component named infinitedeployment. As can be seen under .spec.template.spec.containers for this particular component, it creates one container for it.

When you run odo logs, you should see logs from all these containers. Each line is prefixed with <container-name>: to easily distinguish which the container the logs belong to. Since we named multiple containers in the devfile.yaml as main, odo logs has distinguished these containers as main and main[1]:

$ odo logs
main: Fri May 27 06:17:30 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:31 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:32 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:33 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:34 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:35 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:36 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:37 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:38 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:39 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:40 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:41 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:42 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:44 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:45 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:46 UTC 2022 - this is infinite for loop
main: Fri May 27 06:17:47 UTC 2022 - this is infinite for loop
runtime: time="2022-05-27T06:17:36Z" level=info msg="create process:devrun" 
runtime: time="2022-05-27T06:17:36Z" level=info msg="create process:debugrun" 
runtime: time="2022-05-27T06:17:36Z" level=info msg="try to start program" program=devrun 
runtime: time="2022-05-27T06:17:36Z" level=info msg="success to start program" program=devrun 
runtime: time="2022-05-27T06:17:37Z" level=debug msg="no auth required" 
runtime: time="2022-05-27T06:17:37Z" level=debug msg="wait program exit" program=devrun 
runtime: time="2022-05-27T06:17:37Z" level=info msg="program stopped with status:exit status 0" program=devrun 
runtime: time="2022-05-27T06:17:37Z" level=info msg="Don't start the stopped program because its autorestart flag is false" program=devrun 
runtime: time="2022-05-27T06:17:41Z" level=debug msg="no auth required" 
runtime: time="2022-05-27T06:17:41Z" level=debug msg="succeed to find process:devrun" 
runtime: time="2022-05-27T06:17:41Z" level=info msg="try to start program" program=devrun 
runtime: time="2022-05-27T06:17:41Z" level=info msg="success to start program" program=devrun 
runtime: ODO_COMMAND_RUN is npm start
runtime: Changing directory to ${PROJECT_SOURCE}
runtime: Executing command cd ${PROJECT_SOURCE} && npm start
runtime: 
runtime: > nodejs-starter@1.0.0 start /projects
runtime: > node server.js
runtime: 
runtime: App started on PORT 3000
runtime: time="2022-05-27T06:17:42Z" level=debug msg="wait program exit" program=devrun 
runtime: time="2022-05-27T06:17:43Z" level=debug msg="no auth required" 
main1: Fri May 27 06:17:34 UTC 2022 - this is infinite for loop
main1: Fri May 27 06:17:35 UTC 2022 - this is infinite for loop
main1: Fri May 27 06:17:36 UTC 2022 - this is infinite for loop
main1: Fri May 27 06:17:37 UTC 2022 - this is infinite for loop
main1: Fri May 27 06:17:38 UTC 2022 - this is infinite for loop
main1: Fri May 27 06:17:39 UTC 2022 - this is infinite for loop
main1: Fri May 27 06:17:40 UTC 2022 - this is infinite for loop