Troubleshooting Apache Cloudstack

Troubleshooting CloudStack
Rajesh Battala, Likitha Shetty & Sailaja Mada
Wednesday, December 18, 2013

Agenda
 ACS developer
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–
–
–

ACS Error codes
Debugging tips in ACS development
SSVM troubleshooting
ACS ports

 ACS Cloud Admin
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–
–
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Install, Configuration & Deployment
Log analysis
Important Global Config Parameters
Best Practices
Cloud Database
Reusing Hypervisors

 References

 Q&A

ACS Developer


ACS error codes
-

Client error codes
public static final int MALFORMED_PARAMETER_ERROR = 430;
public static final int PARAM_ERROR = 431;
public static final int UNSUPPORTED_ACTION_ERROR = 432;
public static final int PAGE_LIMIT_EXCEED = 433;

-

Server error codes
public static final int INTERNAL_ERROR = 530;
public static final int ACCOUNT_ERROR = 531;
public static final int ACCOUNT_RESOURCE_LIMIT_ERROR= 532;
public static final int INSUFFICIENT_CAPACITY_ERROR = 533;
public static final int RESOURCE_UNAVAILABLE_ERROR = 534;
public static final int RESOURCE_ALLOCATION_ERROR = 534;
public static final int RESOURCE_IN_USE_ERROR = 536;
public static final int NETWORK_RULE_CONFLICT_ERROR = 537

Insert Presentation Title Here

Debugging tips in CS development
- Generally use eclipse to attach debugger to the management server
- SystemVM agents
- kill the running process
- add -Xdebug Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=878
7 to /usr/local/cloud/systemvm/_run.sh
- open port 8787
- start the java process - ./run.sh
- Usage
- To check if events are being logged in check usage_events in
cloud DB
- To start usage server in dev setup
mvn -pl usage -Drun -Dpid=$$

SSVM troubleshooting
-

Login
-

-

-

ssh -i /root/.ssh/id_rsa.cloud -p 3922 root@ip where ip is link
local on XenServer and private ip in case of VMware
Script to check the health of SSVM
- /usr/local/cloud/systemvm/ssvm-check.sh
Check if port 8250 is open
In global configuration value of ‘host’ is right set to the management
server ip
Check agent status – service cloud status
Logs can be found at
- /var/log/cloud/cloud.log
Template status can be found in template_store_ref DB table


And a couple more …
-

DB Encryption

To decrypt the database secret key use the following
java -classpath /usr/share/java/cloud-jasypt-1.8.jar
org.jasypt.intf.cli.JasyptPBEStringDecryptionCLI decrypt.sh
input=<encryptedValue> password=<secretKey> verbose=false
(where secretKey is the value in /etc/cloudstack/management/key file)

-

GUI timeout
-

-

Default timeout is 15 minutes
To increase the timeout edit
/usr/share/cloud/management/webapps/client/WEB-INF/web.xml to add
<session-config>
<session-timeout>60</session-timeout>
</session-config>
Restart the server


ACS Ports
-

-

-

-

Management Server
- 8080: Primary GUI / Authentication API Port
- 8096: User/Client Management Server (unauthenticated)
- 8787: CloudStack (Tomcat) debug socket
- 9090: Cloudstack Management Cluster Interface
SystemVM Agent
- 3922: SystemVM to Management (secure)
- 8250: SystemVM to Management (unsecure)
MySQL Server
- 3306: MySQL Server
Hypervisor
- 22/443: XenServer
- 22: KVM
- 443: vCenter
7080: AWS API server


ACS Administrator


ACS Administrator
 Install, Configuration & Deployment
 Log analysis
 Important Global Config Parameters

 Best Practices
 Reuse of Hypervisors
 Cloud database


Install ,Configuration & Deployment Issues
? Failed to login to ACS Management server



4.2 requires Min 2 GB RAM
Redeploy DB and start cloudstack-setup-management

? Issue with Instances in isolated network
 VLAN Trunking in Switch port configuration

? Failed to deploy instances
 Insufficient resources : Management server log analysis


? Failed to add host
 XCP host – Copy Echo plugin
 Host License
 Compatible host while creating the cluster of hosts

? Host/Storage pool in avoid set
 Reachability issues
 Timeout
 Capacity of the storage pool / Host
 Alert state
? Move XS hosts from Alert state
 Unmanage the cluster with the affected host.
 Clear the host tags of the affected host.
xe host-param-clear param-name=tags uuid=<UUID of affected host>
 Manage the cluster with the affected host.


? Host in Alert State
 Monitor Host Root Disk usage
?





Host/Storage pool in avoid set
Reachability issues
Timeout
Capacity of the storage pool / Host
Alert state

? Move XS hosts from Alert state
 Unmanage the cluster with the affected host.
 Clear the host tags of the affected host.
xe host-param-clear param-name=tags uuid=<UUID of affected host>
 Manage the cluster with the affected host.


Logs
 Management Server logs
- /var/log/cloudstack/managementserver.log
- /var/log/cloudstack/api.log
 SSVM

- /var/log/cloud/cloud.out

 KVM cloudstak Agent - /var/log/cloudstack/agent/agent.log
 vSphere logs
- /var/log/hostd.log (host log)
- /var/log/vmkernel.log (kernel log)
- /var/log/vpxa.log (agent log)
 Xenserver logs
- /var/log/Smlog
-/var/log/xensource.log
 /etc/cloudstack/management/log4j-cloud.xml - Set the priority to TRACE
Levels - FATAL, ERROR, WARNING, INFO, DEBUG, TRACE


Global Config Parameters
expunge.delay

Determines how long (in seconds) to wait before actually
expunging destroyed vm. The default value = the default value of
expunge.interval

60

expunge.workers

The interval (in seconds) to wait before running the expunge
thread.
Number of workers performing expunge

network.gc.interval

Seconds to wait before checking for networks to shutdown

600

network.gc.wait

Time (in seconds) to wait before shutting down a network that's
not in used

600

pool.storage.allocated.capacity.disablethreshold

Percentage (as a value between 0 and 1) of allocated storage
utilization above which allocators will disable using the pool for
low allocated storage available.

secstorage.allowed.internal.sites

Comma separated list of cidrs internal to the datacenter that can
host template download servers, please note 0.0.0.0 is not a valid
site

wait

Time in seconds to wait for control commands to return

vmware.vcenter.session.timeout
integration.api.port

VMware client timeout in seconds
Defaul API port
The interval (in seconds) to wait before running the storage
cleanup thread.

expunge.interval

storage.cleanup.interval


60
1

1

1800
12000
8096
86400

Best Practises


Switch port configurations ( VLANs must be trunked).



Restrict the IP addresses which can access storage to avoid data loss .



Monitor host disk space .



All hosts must be 64-bit and must support HVM (Intel-VT or AMD-V enabled). All Hosts within a
Cluster must be homogeneous.



The volumes used for Primary and Secondary storage should be accessible from Management
Server and the hypervisors. These volumes should allow root users to read/write data. These
volumes must be for the exclusive use of CloudStack and should not contain any data



With Advanced Networking, separate subnets must be used for private and public networks



The Management Servers communicate with the XenServers on ports 22 (ssh) and 80 (HTTP).



The Management Servers communicate with VMware vCenter servers on port 443 (HTTPs).



The Management Servers communicate with the KVM servers on port 22 (ssh).


Reusing Hypervisors

•
•
•
•
•
•
•

xe vm-uninstall --multiple –force
Unmount Storage
xe vif-unplug uuid=<uuid>
xe vif-destroy uuid=<uuid>
xe network-destroy uuid=<cloud link Local uuid>
sh /opt/xensource/bin/cloud-clean-vlan.sh
Disable cloud tags created on host


•
•
•
•

Xenserver

Vmware

Delete all instances
Delete Templates
Unmount Datastores
Remove all cloud networks


Cloud Database














op_dc_vnet_alloc
op_dc_ip_address_alloc
user_ip_address
image_store
vm_template
Template_store_ref
volume
storage_pool
host
vm_instance
nics
network_offering
physical_network_traffic_types


References
o

https://cwiki.apache.org/confluence/display/CLOUDSTACK/SSVM%2C+templates%2C+Secondary+storage+t
roubleshooting

o

https://cwiki.apache.org/confluence/display/CLOUDSTACK/Ports+used+by+CloudStack

o

http://dlafferty.blogspot.in/2013/08/using-cloudstacks-log-files-xenserver.html


Get Involved
Web: http://cloudstack.apache.org/
Mailing Lists: cloudstack.apache.org/mailing-lists.html

IRC: irc.freenode.net: 6667 #cloudstack
Twitter: @cloudstack

LinkedIn: www.linkedin.com/groups/CloudStack-Users-Group-3144859
If it didn’t happen on the mailing list, it didn’t happen.


Troubleshooting Apache Cloudstack

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