Re: environment variables when running multiple containers in one pod

2017-11-27 Thread Yu Wei 
Hi Slava,

The two pvc "ocai-mysql-claim" and "ocai-nb-claim" are consuming two pv which 
are resides on one real storage.  After deploying it on openshift origin 
cluster, "empty" password worked when connecting to mysql.

And endpoint for glusterfs was destroyed soon after deployment, I didn't find 
out the reason.


Then I modified the deployment as below.  And mysql worked as expected.

Now I have two questions:

1, Could two pv reside on one real volume? For example, glusterfs volume

2, I found glusterfs related endpoints disappeared after running deployment 
successfully. How could I debug such issue?


   spec:
  containers:
  - name: ocai
image: aura/web:develop
imagePullPolicy: Always
ports:
- containerPort: 9000
  - name: notebook
image: aura/all-spark-notebook:latest
imagePullPolicy: Always
ports:
- containerPort: 8889
command: ["sh", "-c", "jupyter-notebook --port=8889 
--NotebookApp.token='9e4f96c5239743a8dd5910216c6f02dad89a58932d63db7f' 
--config=/jupyter_notebook_config.py --no-browser"]
volumeMounts:
- mountPath: /data/ai_lab/ocai/
  name: ocai-data
  subPath: nb
resources:
  requests:
memory: 4Gi
  - name: mysql
env:
  - name: MYSQL_ROOT_PASSWORD
value: Ocai@1234
image: aura/mysql:5.7
imagePullPolicy: IfNotPresent
ports:
- containerPort: 3306
volumeMounts:
- mountPath: "/var/lib/mysql"
  name: ocai-data
  subPath: mysql
resources:
  requests:
memory: 2G
  volumes:
  - name: ocai-data
persistentVolumeClaim:
  claimName: ocai-claim


Thanks,

Jared, (韦煜）
Software developer
Interested in open source software, big data, Linux


From: Vyacheslav Semushin 
Sent: Monday, November 27, 2017 9:52:50 PM
To: Yu Wei
Cc: us...@lists.openshift.redhat.com; dev@lists.openshift.redhat.com
Subject: Re: environment variables when running multiple containers in one pod

2017-11-27 10:34 GMT+01:00 Yu Wei 
mailto:yu20...@hotmail.com>>:

Hi，

When running mysql with other containers within one pod, it seemed that 
environment variable "MYSQL_ROOT_PASSWORD" didn't work as expected.

Password set in "MYSQL_ROOT_PASSWORD" couldn't be used for connecting to mysql.

It doesn't work only when other containers are being created and when they try 
to connect to mysql container? If yes, then it could be a race when mysql 
container isn't ready while others try to connect to it.


--
Slava Semushin | OpenShift
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Re: environment variables when running multiple containers in one pod

2017-11-27 Thread Vyacheslav Semushin 
2017-11-27 10:34 GMT+01:00 Yu Wei :

> Hi，
>
> When running mysql with other containers within one pod, it seemed that
> environment variable "MYSQL_ROOT_PASSWORD" didn't work as expected.
>
> Password set in "MYSQL_ROOT_PASSWORD" couldn't be used for connecting to
> mysql.
>

It doesn't work only when other containers are being created and when they
try to connect to mysql container? If yes, then it could be a race when
mysql container isn't ready while others try to connect to it.


-- 
Slava Semushin | OpenShift
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environment variables when running multiple containers in one pod

2017-11-27 Thread Yu Wei 
Hi，

When running mysql with other containers within one pod, it seemed that 
environment variable "MYSQL_ROOT_PASSWORD" didn't work as expected.

Password set in "MYSQL_ROOT_PASSWORD" couldn't be used for connecting to mysql.

But empty password works.

If only running mysql in pod, the variable works fine.


How could I fix the problem?


Detailed deployment file is as below,

spec:
  containers:
  - name: ocai
image: aura/web:develop
imagePullPolicy: Always
ports:
- containerPort: 9000
  - name: notebook
image: aura/all-spark-notebook:latest
imagePullPolicy: Always
ports:
- containerPort: 8889
command: ["sh", "-c", "jupyter-notebook --port=8889 
--NotebookApp.token='9e4f96c5239743a8dd5910216c6f02dad89a58932d63db7f' 
--config=/jupyter_notebook_config.py --no-browser"]
volumeMounts:
- mountPath: /data/ai_lab/ocai/
  name: nb-data
resources:
  requests:
memory: 4Gi
  - name: mysql
env:
  - name: MYSQL_ROOT_PASSWORD
value: Ocai@1234
image: aura/mysql:5.7
imagePullPolicy: IfNotPresent
ports:
- containerPort: 3306
volumeMounts:
- mountPath: "/var/lib/mysql"
  name: mysql-data
resources:
  requests:
memory: 2G
  volumes:
- name: mysql-data
  persistentVolumeClaim:
claimName: ocai-mysql-claim
- name: nb-data
  persistentVolumeClaim:
claimName: ocai-nb-claim





Thanks,

Jared, (韦煜）
Software developer
Interested in open source software, big data, Linux
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