Page Comparison

Description of Services

abiquo-tomcat

• What it does: It is a servlet container responsible for the management of Abiquo modules.
• When it is required: When there are Abiquo modules on the server.

• How to check its status:

  Code Block
  # ps aux | grep tomcat

  
  

• Example output:

  Div
  class tinycode widecode
  Code Block root 18348 9.6 26.9 2457384 833320 ? Sl Feb29 782:38 /usr/java/default/bin/java -Djava.util.logging.config.file=/opt/abiquo/tomcat/conf/logging.properties -server -Xms1024m -Xmx1500m -XX:MaxPermSize=512m -XX:+CMSClassUnloadingEnabled -Djava.awt.headless=true - Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/opt/abiquo/tomcat/endorsed - classpath /opt/abiquo/tomcat/bin/bootstrap.jar -Dcatalina.base=/opt/abiquo/tomcat -Dcatalina.home=/opt/abiquo/tomcat - Djava.io.tmpdir=/opt/abiquo/tomcat/temp org.apache.catalina.startup.Bootstrap start

  
  

• How to start or stop it:

  Code Block
  # service abiquo-tomcat start # service abiquo-tomcat stop # service abiquo-tomcat restart

  
  

mysqld

• What it does: MySQL daemon that runs the MariaDB database that contains most of the information that Abiquo uses
• When it is required: By default, it is installed on the Abiquo Server. It can be installed on a separate server or an already existing MySQL server.

• How to check its status:

  Code Block
  # service mysql status

  
  

• How to start or stop it:

  Warning
  title Caution!
  Stopping the MySQL database server before the Abiquo Server may harm the environment and cause data loss.

  
  

  Code Block
  # service mysql start # service mysql stop

  
  

redis

• What it does: The Redis server manages event subscription on nodes and delivers it to Abiquo. The Monitor manager or VSM remote service detects state changes in the virtual systems. So for example, when you add a virtual machine, the VSM creates a monitor for that virtual machine, and when the virtual machine is powered on, the state change is detected and notified by the VSM.
• Where is it required: On Remote Services servers that contain the Monitor Manager (VSM) Remote Service. Redis can also be installed on a separate server for the remote services. Redis is also installed on the Abiquo Server. In a monolithic configuration, Abiquo uses only one Redis instance.

• How to check its status:

  Code Block
  # redis-cli ping

  Alternatively, type the following commands:

  Code Block
  # redis-cli redis 127.0.0.1:6379> set mykey somevalue OK redis 127.0.0.1:6379> get mykey "somevalue"

  
  

• How to start or stop it:

  Note
  title Caution
  Always stop the Abiquo-tomcat services first before stopping Redis.

  
  

  Code Block
  # redis start # redis-cli shutdown

  
  

rabbitmq-server

• What it does: RabbitMQ is used for communications between Remote Services and the central Abiquo Server and its API
• When it is required: On Abiquo main server installations

• How to check its status:

  Note
  title Caution
  Always stop the Abiquo-tomcat services first before stopping RabbitMQ.

  
  

  Code Block
  # service rabbitmq-server status

  
  

• How to start or stop it:

  Code Block
  # service rabbitmq-server start # service rabbitmq-server stop

  
  

v2v-diskmanager

• What it does: Script used for automating VM Template conversions to supported formats
• When it is required: For disk format conversions. For performance reasons, it should be installed as a separate V2V Server.

• How to check its status: This is not a daemon; it is a service initiated by Abiquo. So the best way to know if it is currently working on a conversion is using ps aux:

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  class tinycode widecode
  Code Block # ps aux | grep v2v root 32046 0.2 0.0 63892 1200 ? S 16:44 0:00 /bin/bash /usr/bin/v2v-diskmanager VMDK_STREAM_OPTIMIZED L29wdC92bV9yZXBvc2l0b3J5LzEvcnMuYmNuLmFiaXF1by5jb20vYWJpcG9ydDkwMDAvb3ZmLzcyL2ZpbGUtYnVpbGQtYm90 LXJoZWw1LWRpc2sxLnZtZGs= VMDK_FLAT L29wdC92bV9yZXBvc2l0b3J5LzEvcnMuYmNuLmFiaXF1by5jb20vYWJpcG9yd DkwMDAvb3ZmLzcyL2Zvcm1hdHMvZmlsZS1idWlsZC1ib3QtcmhlbDUtZGlzazEudm1kay1WTURLX0ZMQVQ= root 32095 0.0 0.0 61224 756 pts/1 R+ 16:44 0:00 grep v2

  
  

• How to start or stop it: You will only need to stop it or to start it when there is an issue during conversions. For example, if you want to test why a conversion failed. You can check the /opt/abiquo/tomcat/logs/bpm-async.log to find the command issued by Abiquo:

  Div
  class tinycode widecode
  Code Block 2012-03-23 16:44:07,142 DEBUG c.a.a.b.s.u.ExecUtils [ExecUtils.java:46] Executing OS command: v2v-diskmanager VMDK_STREAM_OPTIMIZED L29wdC92bV9yZXBvc2l0b3J5LzEvcnMuYmNuLmFiaXF1by5jb20vYWJpcG9ydDkwMDAvb3ZmLzcyL2ZpbGUtYnVpbGQtYm90LX JoZWw1LWRpc2sxLnZtZGs= VMDK_FLAT L29wdC92bV9yZXBvc2l0b3J5LzEvcnMuYmNuLmFiaXF1by5jb20vYWJpcG9ydDkwM DAvb3ZmLzcyL2Zvcm1hdHMvZmlsZS1idWlsZC1ib3QtcmhlbDUtZGlzazEudm1kay1WTURLX0ZMQVQ=

  Copy a command found in the log and run it again to see more detail from the error message. For example:

  Div
  class tinycode widecode
  Code Block $ v2v-diskmanager VMDK_STREAM_OPTIMIZED L29wdC92bV9yZXBvc2l0b3J5LzEvcnMuYmNuLmFiaXF1by5jb20vYWJpcG9 ydDkwMDAvb3ZmLzcyL2ZpbGUtYnVpbGQtYm90LXJoZWw1LWRpc2sxLnZtZGs= VMDK_FLAT L29wdC92bV9yZXBvc2l0b3J5LzE vcnMuYmNuLmFiaXF1by5jb20vYWJpcG9ydDkwMDAvb3ZmLzcyL2Zvcm1hdHMvZmlsZS1idWl sZC1ib3QtcmhlbDUtZGlzazEudm1kay1WTURLX0ZMQVQ=

  To stop it, use the pkill command, or from the top application, pressing k to kill the process.

mechadora

• What it does: Creates a persistent machine from a VM Template that will run on an iSCSI disk
• When is required: This is a remote service that would usually be installed on V2V Servers.

• How to check its status:

  Div
  class tinycode widecode
  Code Block # ps aux | grep mechadora root 2521 0.0 0.0 63892 1160 ? S 18:05 0:00 /bin/bash /usr/bin/mechadora deploy 10.60.13.20 iqn.2008-03.com.abiquo.localhost.localdomain:8654e6ac-cb3f-4751-9600-4bc642c327c5  /opt/vm_repository/1/abiquo-repository.s3.amazonaws.com/ubuntu-11.04/formats/ubuntu-11.04.qcow2-RAW  ip-10.60.13.20:3260-iscsi-iqn.2008-03.com.abiquo.localhost.localdomain:8654e6ac-cb3f-4751-9600- 4bc642c327c5-lun-1

  
  

• How to start or stop it: The procedure is the same as for v2v-diskmanager.

nfs

• What it does: It is the service that manages the NFS shares from our system when we export them. In Abiquo we use it to share the vm_repository
• When it is required: Only when we are sharing our vm_repository, usually in small installations.

• How to check its status:

  Code Block
  # service nfs status

  
  

• How to start or stop it: Use the service command.

  Code Block
  # service nfs start # service nfs stop

  
  

smb

• What it does: Manages Samba shares in Linux environments. On the Abiquo platform, it is used to share the vm_repository origin with Hyper-V Hypervisors.
• When it is required: On the vm_repository origin, from where it will also be exported using NFS.

• How to check its status:

  Code Block
  # service smb status

  
  

• How to start or stop it:

  Code Block
  # service smb start # service smb stop

  
  

dhcpd

• What it does: The daemon for the DHCP server. Assigns the IPs that the user selected in Abiquo to each virtual machine.
• When it is required: On our Remote Services servers. It can also be installed separately and requires a trunk port connection to reach the hypervisors.

• How to check its status:

  Code Block
  # service dhcpd status

  
  

• How to start or stop it:

  Code Block
  # service dhcpd start # service dhcpd stop

  
  

dhrelay

• What it does: It is the main component on DHCP Relay servers, see Abiquo DHCP documentation for more information.
• When it is required: On DHCP Relay servers. See the documentation above.

• How to check its status:

  Code Block
  # service dhrelay status

  
  

• How to start or stop it:

  Code Block
  # service dhcpd start # service dhcpd stop

  
  

abiquo-aim

• What it does: It is the link that communicates between Libvirt on KVM hypervisors and the Remote Services, in particular Redis.
• When it is required: On KVM hypervisors

• How to check its status:

  Code Block
  # ps aux | grep abiquo-aim

  
  

• If abiquo-aim is running, you will see a line like this:

  Code Block
  root 2816 0.0 0.4 95528 2104 ? Ssl 13:26 0:00 /usr/sbin/abiquo-aim --config-file /etc/abiquo-aim.ini -d

  
  

• How to start or stop it:

  Code Block
  # service abiquo-aim start # service abiquo-aim stop

  
  

abiquo-emmett

• What it does: It is part of the Watchtower monitoring module that interacts with the VSM and Abiquo API and the KairosDB to manage metrics and alarms.
• When it is required: On the Abiquo Monitoring server

• How to check its status:

  Code Block
  # ps aux | grep abiquo-emmett

  
  

• If abiquo-emmett is running, you will see a line like this:

  Code Block
  XXX TODO

  
  

• How to start or stop it:
  NOTES ABOUT START / STOP ISSUES 

  Code Block
  # service abiquo-emmett start # service abiquo-emmett stop

  
  

abiquo-delorean

• What it does: It is part of the Watchtower monitoring module. It evaluates monitoring alarms and alerts
• When it is required: On the Abiquo Monitoring server

• How to check its status:

  Code Block
  # ps aux | grep abiquo-delorean

  
  

• If abiquo-delorean is running, you will see a line like this:

  Code Block
  XXX TODO

  
  

• How to start or stop it:
  NOTES ABOUT START / STOP ISSUES 

  Code Block
  # service abiquo-delorean start # service abiquo-delorean stop

  
  

kairosdb

• What it does: It is part of the Abiquo Monitoring system. It is a fast scalable time series database. Abiquo uses it to store metrics with the Cassandra NoSQL database.
• Reference: http://kairosdb.github.io/docs/build/html/GettingStarted.html
• When it is required: It is required for monitoring. By default it is installed on the Abiquo Monitoring server. In a larger installation it should be installed on a separate server.

• How to check its status:

  Code Block
  # ps aux | grep kairosdb

  If kairosdb is running, you will see a line like this:
  Image Added

• How to start or stop it:
  NOTES ABOUT START / STOP ISSUES 

  Code Block
  # ./kairosdb.sh start # ./kairosdb.sh stop

  
  

cassandra

• What it does: It is part of the Abiquo Monitoring system. To quote its wiki: "Cassandra is a highly scalable, eventually consistent, distributed, structured key-value store". Abiquo uses it to store metrics. 
• Reference: https://wiki.apache.org/cassandra/GettingStarted
• When it is required: It is required for monitoring. By default it is installed on the Abiquo Monitoring server. In a larger installation it should be installed on a separate server or even a cluster.

• How to check its status:

  Code Block
  # ps aux | grep cassandra

  If Cassandra is running, you will see a line like this:

  Code Block
  XXX TODO

  
  

• How to start or stop it:
  NOTES ABOUT START / STOP ISSUES 

  Code Block
  # bin/cassandra # pkill -f CassandraDaemon