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Julia ida commented on CLOUDSTACK-10451:
----------------------------------------
h4. ion
Currently the QuorumCxnManager connectOne method dumps an exception when it
encounters java.net.SocketTimeoutException: Read timed out, or
java.net.ConnectException: Connection refused in addition to providing an error
message.
As an example, the following output is seen:
[2020-01-20 00:21:23,828] WARN Cannot open channel to 3 at election address
aaa-3/10.0.1.3:3888 (org.apache.zookeeper.server.quorum.QuorumCnxManager)
java.net.ConnectException: Connection refused (Connection refused)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at
java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at
org.apache.zookeeper.server.quorum.QuorumCnxManager.connectOne(QuorumCnxManager.java:558)
at
org.apache.zookeeper.server.quorum.QuorumCnxManager.connectAll(QuorumCnxManager.java:610)
at
org.apache.zookeeper.server.quorum.FastLeaderElection.lookForLeader(FastLeaderElection.java:838)
These exceptions are frequently output when launching and restarting several
zookeeper servers and create confusion in what are normal operations and
expected errors. I would suggest a few of these specific expected errors could
be detected and reduced to only the text error output without the accompanying
exception
When launching the first node in a 3 node quorum cluster, about 120 lines of
error output are generated for a working launch.
I would be happy to make some of these changes if this approach is agreeable to
the maintainers. My approach would be to look for the specific standard
conditions in the exception handling and eliminate the exception stack trace
where present in these cases.
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h4. Dates
Created:20/Jan/20 01:27Updated:20/Jan/20 01:29
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h4. Agile
{panel}
h4. Slack
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> GSoC 2022 Idea: Instant Instance Deploy (using VM Definitions)
> --------------------------------------------------------------
>
> Key: CLOUDSTACK-10451
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-10451
> Project: CloudStack
> Issue Type: Improvement
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Reporter: Suresh Kumar Anaparti
> Priority: Major
> Labels: gsoc2022, mentor
> Original Estimate: 175h
> Remaining Estimate: 175h
>
> h2. Background
> Currently, Deploy Instances/Virtual Machines(VMs) in Cloudstack requires to
> specify some offerings, template and other settings through the API (check
> the API here:
> [https://cloudstack.apache.org/api/apidocs-4.16/apis/deployVirtualMachine.html])
> or the 'Instance Deployment Wizard' in the UI.
> h2. Requirement
> Provision to user/operator to quick deploy an instance using a VM
> definition/profile. The VM definition/profile would hold the details of the
> template, offerings (including any custom values - size, iops), ssh keypair,
> instance group, affinity group and other settings (boot type, dynamic
> scaling, userdata, keyboard language, etc) that are required, and the
> underlying definition/profile id can be used to launch an instance. At the
> minimum, the definition should hold all the mandatory details for deploying
> an instance. With this, only the VM definitions/profiles (and other important
> options, with the associated billing details) can be exposed to the users for
> VM deployment, instead of the offerings and other VM options.
> Need to add new APIs (and/or UI) support for the VM definition/profile CRUD
> operations, and support for definition in the deployVirtualMachine API.
> h2. Relevant Skills
> * Java, MySQL
> * Vue.js (for UI)
> * Some knowledge of Virtualization and CloudStack
> h2. Difficulty
> Medium
> h2. Potential Mentors
> * Suresh Kumar Anaparti
> * David Jumani
> h2. Project Scope/Duration
> Medium / 175 hours
> h2. References
> *
> [http://docs.cloudstack.apache.org/en/latest/adminguide/index.html#working-with-virtual-machines]
> *
> [https://cloudstack.apache.org/api/apidocs-4.16/apis/deployVirtualMachine.html]
> * [https://cloudstack.apache.org/api/apidocs-4.16/]
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