How to monitor

This document describes the monitoring techniques of components supported by an on-premise deployment of Apigee Edge for Private Cloud.

Overview

Edge supports several ways for getting details about services as well as checking their statuses. The following table lists the types of checks you can perform on each eligible service:

Mgmt API
Component Memory Usage [JMX*] Service Check User/Org/ Deployment Status axstatus Database check apigee-service Status apigee-monit**
Management Server
Message Processor
Router
Qpid
Postgres
More Info More Info More Info More Info More Info More Info More Info

* Before you can use JMX, you must enable it, as described in Enable JMX.

** The apigee-monit service checks if a component is up and will attempt to restart it if it isn't. For more information, see Self healing with apigee-monit.

Monitoring ports and configuration files

Each component supports Java Management Extensions (JMX) and Management API monitoring calls on different ports. The following table lists the JMX and Management API ports for each type of server, and configuration file locations:

Component JMX Port Management API Port Configuration file location
Management Server 1099 8080 $APIGEE_ROOT/customer/application/management-server.properties
Message Processor 1101 8082 $APIGEE_ROOT/customer/application/message-processor.properties
Router 1100 8081 $APIGEE_ROOT/customer/application/router.properties
Qpid 1102 8083 $APIGEE_ROOT/customer/application/qpid-server.properties
Postgres 1103 8084 $APIGEE_ROOT/customer/application/postgres-server.properties

Use JMX to monitor components

The following sections explain how to use JMX to monitor Edge components.

Enable JMX

To enable JMX without authentication or SSL based communication, perform the steps below. Note: In production systems, both encrypted authentication and SSL should be enabled for security.

  1. Edit the appropriate configuration file (see Configuration file reference). Create the configuration file if it doesn’t exist.
    conf_system_jmxremote_enable=true
  2. Save the configuration file and make sure it is owned by apigee:apigee.
  3. Restart appropriate Edge component
    apigee-service edge-management-server restart

To disable JMX, either remove the property conf_system_jmxremote_enable or change its value to false. Then restart the appropriate Edge component.

Authentication in JMX

Edge for Private Cloud supports password based authentication using details stored in files. You can store passwords as a Hash for added security.

  1. To enable JMX authentication in an edge-* component, edit the appropriate configuration file (see Configuration file reference). Create the configuration file if it doesn’t exist:
    conf_system_jmxremote_enable=true
    conf_system_jmxremote_authenticate=true
    conf_system_jmxremote_encrypted_auth=true
    conf_system_jmxremote_access_file=/opt/apigee/customer/application/management-server/jmxremote.access
    conf_system_jmxremote_password_file=/opt/apigee/customer/application/management-server/jmxremote.password
    Save the configuration file and make sure it is owned by apigee:apigee.
  2. Create a SHA256 hash of the password:
    echo -n '' | openssl dgst -sha256
  3. Create a jmxremote.password file with JMX user credentials:
    1. Copy the following files from your $JAVA_HOME directory to the directory /opt/apigee/customer/application/<component>/:
      cp ${JAVA_HOME}/lib/management/jmxremote.password.template $APIGEE_ROOT/customer/application/management-server/jmxremote.password
    2. Edit the file and add your JMX username and password using the following syntax:
      USERNAME <HASH-PASSWORD>
    3. Make sure the file is owned by apigee and that the file mode is 400:
      chown apigee:apigee $APIGEE_ROOT/customer/application/management-server/jmxremote.password
      chmod 400 $APIGEE_ROOT/customer/application/management-server/jmxremote.password
  4. Create a jmxremote.access file with JMX user permissions:
    1. Copy the following files from your $JAVA_HOME directory to the directory /opt/apigee/customer/application/<component>/
      
      cp ${JAVA_HOME}/lib/management/jmxremote.access$APIGEE_ROOT/customer/application/management-server/jmxremote.password/jmxremote.access
    2. Edit the file and add your JMX username followed by a permission (READONLY/READWRITE)
      USERNAME READONLY
    3. Make sure the file is owned by apigee and that the file mode is 400:
      chown apigee:apigee $APIGEE_ROOT/customer/application/management-server/jmxremote.password
      
      chmod 400 $APIGEE_ROOT/customer/application/management-server/jmxremote.access
  5. Restart the appropriate Edge component:
    apigee-service edge-management-server restart

To disable JMX authentication, either remove the property conf_system_jmxremote_authenticate or change the value to false and restart appropriate Edge component.

SSL in JMX

To enable SSL based JMX in an edge-* component:

  1. Edit the appropriate configuration file (see Configuration file reference). Create the configuration file if it doesn’t exist:
    conf_system_jmxremote_enable=true
    conf_system_jmxremote_ssl=true
    conf_system_javax_net_ssl_keystore=/opt/apigee/customer/application/management-server/jmxremote.keystore
    conf_system_javax_net_ssl_keystorepassword=<keystore-password>
    Save the configuration file and make sure it is owned by apigee:apigee.
  2. Prepare a keystore containing the server key and place it at the path provided in the configuration conf_system_javax_net_ssl_keystore above. Ensure the keystore file is readable by apigee:apigee.
  3. Restart the appropriate Edge component:
    apigee-service edge-management-server restart

To disable SSL-based JMX, either remove the property conf_system_jmxremote_ssl or change the value to false. Restart the appropriate Edge component.

Monitoring via Jconsole

Monitoring instructions via jconsole remain the same as described in https://docs.apigee.com/private-cloud/v4.50.00/how-monitor#jconsole.

One line can be added that “jconsole will need to be started with truststore and truststore password if SSL is enabled for JMX.” Reference: https://docs.oracle.com/javase/8/docs/technotes/guides/management/jconsole.html

Monitor with JConsole

Use JConsole (a JMX compliant tool) to manage and monitor health check and process statistics. With JConsole, you can consume JMX statistics exposed by your servers and display them in a graphical interface. For more information, see Using JConsole.

You need to start JConsole with truststore and truststore password if SSL is enabled for JMX. See Using JConsole.

JConsole uses the following service URL to monitor the JMX attributes (MBeans) offered via JMX:

service:jmx:rmi:///jndi/rmi://IP_address:port_number/jmxrmi

Where:

  • IP_address is the IP address of the server you want to monitor.
  • port_number is the JMX port number of the server you want to monitor.

For example, to monitor the Management Server, issue a command like the following (assuming the server's IP address is 216.3.128.12):

service:jmx:rmi:///jndi/rmi://216.3.128.12:1099/jmxrmi

Note that this example specifies port 1099, which is the Management Server JMX port. For other ports, see JMX and Management API monitoring ports.

The following table shows the generic JMX statistics:

JMX MBeans JMX Attributes

Memory

HeapMemoryUsage

NonHeapMemoryUsage

Usage

Configuration file reference

The following sections describe changes you might need to make to Edge component configuration files for JMX related configurations. See Monitoring ports and configuration files for more information.

JMX configuration to be added to the appropriate component’s configuration file

  • Enable JMX agent on the edge-component. False by default.
    conf_system_jmxremote_enable=true

Configurations for password based authentication

  • Enable password based authentication. False by default.
    conf_system_jmxremote_authenticate=true
  • Path to access file. Should be owned and readable by Apigee user only.
    conf_system_jmxremote_access_file=/opt/apigee/customer/application/management-server/jmxremote.access
  • Path to password file. Should be owned and readable by Apigee user only.
    conf_system_jmxremote_password_file=/opt/apigee/customer/application/management-server/jmxremote.password
  • Enable storing password in encrypted format. False by default.
    conf_system_jmxremote_encrypted_auth=true

Configurations for SSL based JMX

  • Enable SSL for JMX communication. False by default.
    conf_system_jmxremote_ssl=true
  • Path to keystore. Should be owned and readable by Apigee user only.
    conf_system_javax_net_ssl_keystore=/opt/apigee/customer/application/management-server/jmxremote.keystore
  • Keystore password:
    conf_system_javax_net_ssl_keystorepassword=changeme

Optional JMX configurations

Values listed are default values and can be changed.

  • JMX Port. Default values are listed in the table below.
    conf_system_jmxremote_port=
  • JMX RMI Port. By default, Java process will pick a random port.
    conf_system_jmxremote_rmi_port=
  • The host name for remote stubs. Default IP address of localhost.
    conf_system_java_rmi_server_hostname=
  • Protect JMX registry with SSL. Default false. Only applicable if SSL is enabled.
    conf_system_jmxremote_registry_ssl=false

Monitor with the Management API

Edge includes several APIs that you can use to perform service checks on your servers as well as check your users, organizations, and deployments. This section describes these APIs.

Perform service checks

The Management API provides several endpoints for monitoring and diagnosing issues with your services. These endpoints include:

Endpoint Description
/servers/self/up

Checks to see if a service is running. This API call does not require you to authenticate.

If the service is running, this endpoint returns the following response:

<ServerField>
  <Up>true</Up>
</ServerField>

If the service is not running, you will get a response similar to the following (depending on which service it is and how you checked it):

curl: Failed connect to localhost:port_number; Connection refused
/servers/self

Returns information about the service, including:

  • Configuration properties
  • Start time and up time
  • Build, RPM, and UUID information
  • Internal and external hostname and IP address
  • Region and pod
  • <isUp> property, indicating whether the service is running

This API call requires you to authenticate with your Apigee admin credentials.

To use these endpoints, invoke a utility such as curl with commands that use the following syntax:

curl http://host:port_number/v1/servers/self/up -H "Accept: [application/json|application/xml]"
curl http://host:port_number/v1/servers/self -u username:password -H "Accept: [application/json|application/xml]"

Where:

  • host is the IP address of the server you want to check. If you are logged into the server, you can use "localhost"; otherwise, specify the IP address of the server as well as the username and password.
  • port_number is the Management API port for the server you want to check. This is a different port for each type of component. For example, the Management Server's Management API port is 8080. For a list of Management API port numbers to use, see JMX and Management API monitoring ports

To change the format of the response, you can specify the Accept header as "application/json" or "application/xml".

The following example gets the status of the Router on localhost (port 8081):

curl http://localhost:8081/v1/servers/self/up -H "Accept: application/xml"

The following example gets information about the Message Processor at 216.3.128.12 (port 8082):

curl http://216.3.128.12:8082/v1/servers/self -u sysAdminEmail:password
  -H "Accept: application/xml"

Monitor user, organization, and deployment status

You can use the Management API to monitor user, organization, and deployment status of your proxies on Management Servers and Message Processors by issuing the following commands:

curl http://host:port_number/v1/users -u sysAdminEmail:password
curl http://host:port_number/v1/organizations -u sysAdminEmail:password
curl http://host:port_number/v1/organizations/orgname/deployments -u sysAdminEmail:password

Where port_number is either 8080 for the Management Server or 8082 for the Message Processor.

This call requires you to authenticate with your system administration username and password.

The server should return a "deployed" status for all calls. If these fail, do the following:

  1. Check the server logs for any errors. The logs are located at:
    • Management Server: opt/apigee/var/log/edge-management-server
    • Message Processor: opt/apigee/var/log/edge-message-processor
  2. Make a call against the server to check whether it is functioning properly.
  3. Remove the server from the ELB and then restart it:
    /opt/apigee/apigee-service/bin/apigee-service service_name restart

    Where service_name is:

    • edge-management-server
    • edge-message-processor

Check status with the apigee-service command

You can troubleshoot your Edge services by using the apigee-service command when you are logged into the server running the service.

To check the status of a service with apigee-service:

  1. Log in to the server and run the following command:
    /opt/apigee/apigee-service/bin/apigee-service service_name status

    Where service_name is one of the following:

    • Management Server: edge-management-server
    • Message Processor: edge-message-processor
    • Postgres: edge-postgres-server
    • Qpid: edge-qpid-server
    • Router: edge-router

    For example:

    /opt/apigee/apigee-service/bin/apigee-service edge-message-processor status
  2. If the service is not running, start the service:
    /opt/apigee/apigee-service/bin/apigee-service service_name start
  3. After restarting the service, check that it is functioning, either by using the apigee-service status command you used previously or by using the Management API described in Monitor with the Management API.

    For example:

    curl -v http://localhost:port_number/v1/servers/self/up

    Where port_number is the Management API port for the service.

    This example assumes you are logged into the server and can use "localhost" as the hostname. To check the status remotely with the Management API, you must specify the IP address of the server and include the system administrator username and password in your API call.

Postgres monitoring

Postgres supports several utilities that you can use to check its status. These utilities are described in the sections that follow.

Check organizations and environments on Postgres

You can check for organization and environment names that are onboarded on the Postgres Server by issuing the following curl command:

curl -v http://postgres_IP:8084/v1/servers/self/organizations

The system should display the organization and environment name.

Verify analytics status

You can verify the status of the Postgres and Qpid analytics servers by issuing the following curl command:

curl -u userEmail:password http://host:port_number/v1/organizations/orgname/environments/envname/provisioning/axstatus

The system should display a success status for all analytics servers, as the following example shows:

{
  "environments" : [ {
    "components" : [ {
      "message" : "success at Thu Feb 28 10:27:38 CET 2013",
      "name" : "pg",
      "status" : "SUCCESS",
      "uuid" : "[c678d16c-7990-4a5a-ae19-a99f925fcb93]"
     }, {
      "message" : "success at Thu Feb 28 10:29:03 CET 2013",
      "name" : "qs",
      "status" : "SUCCESS",
      "uuid" : "[ee9f0db7-a9d3-4d21-96c5-1a15b0bf0adf]"
     } ],
    "message" : "",
    "name" : "prod"
   } ],
  "organization" : "acme",
  "status" : "SUCCESS"
}

PostgresSQL database

This section describes techniques that you can use specifically for monitoring the Postgres database.

Use the check_postgres.pl script

To monitor the PostgresSQL database, you can use a standard monitoring script, check_postgres.pl. For more information, see http://bucardo.org/wiki/Check_postgres.

Before you run the script:

  1. You must install the check_postgres.pl script on each Postgres node.
  2. Ensure that you have installed perl-Time-HiRes.x86_64, a Perl module that implements high resolution alarm, sleep, gettimeofday, and interval timers. For example, you can install it by using the following command:
    yum install perl-Time-HiRes.x86_64
  3. CentOS 7: Before using check_postgres.pl on CentOS v7, install the perl-Data-Dumper.x86_64 RPM.

check_postgres.pl output

The default output of the API calls using check_postgres.pl is Nagios compatible. After you install the script, do the following checks:

  1. Check the database size:
    check_postgres.pl -H 10.176.218.202 -db apigee -u apigee -dbpass postgres -include=apigee -action database_size --warning='800 GB' --critical='900 GB'
  2. Check the number of incoming connections to the database and compares with maximum allowed connections:
    check_postgres.pl -H 10.176.218.202 -db apigee -u apigee -dbpass postgres -action backends
  3. Check if database is running and available:
    check_postgres.pl -H 10.176.218.202 -db apigee -u apigee -dbpass postgres -action connection
  4. Check the disk space:
    check_postgres.pl -H 10.176.218.202 -db apigee -u apigee -dbpass postgres -action disk_space --warning='80%' --critical='90%'
  5. Check the number of organization and environment onboarded in a Postgres node:
    check_postgres.pl -H 10.176.218.202 -db apigee -u apigee -dbpass postgres -action=custom_query --query="select count(*) as result from pg_tables where schemaname='analytics' and tablename like '%fact'" --warning='80' --critical='90' --valtype=integer

Run database checks

You can verify that the proper tables are created in PostgresSQL database. Log in to PostgreSQL database using the following command:

psql -h /opt/apigee/var/run/apigee-postgresql/ -U apigee -d apigee

Then run:

\d analytics."org.env.fact"

Check health status of postgres process

You can perform API checks on the Postgres machine by invoking the following curl command:

curl -v http://postgres_IP:8084/v1/servers/self/health

This command returns the ACTIVE status when postgres process is active. If the Postgres process is not up and running, it returns the INACTIVE status.

Postgres resources

For additional information about monitoring the Postgres service, see the following:

Apache Cassandra

JMX is enabled by default for Cassandra and remote JMX access to Cassandra does not require a password.

Enable JMX authentication for Cassandra

You can enable JMX authentication for Cassandra. After doing so, you will then be required to pass a username and password to all calls to the nodetool utility.

To enable JMX authentication for Cassandra:

  1. Create and edit the cassandra.properties file:
    1. Edit the /opt/apigee/customer/application/cassandra.properties file. If the file does not exist, create it.
    2. Add the following to the file:
      conf_cassandra-env_com.sun.management.jmxremote.authenticate=true
      conf_cassandra-env_com.sun.management.jmxremote.password.file=${APIGEE_ROOT}/data/apigee-cassandra/jmxremote.password
      conf_cassandra-env_com.sun.management.jmxremote.access.file=${APIGEE_ROOT}/data/apigee-cassandra/jmxremote.access
    3. Save the cassandra.properties file.
    4. Change the owner of the file to apigee:apigee, as the following example shows:
      chown apigee:apigee /opt/apigee/customer/application/cassandra.properties

    For more information on using properties files to set tokens, see How to configure Edge.

  2. Create and edit jmx_auth.sh:
    1. Create a file at the following location if it does not exist:
      /opt/apigee/customer/application/jmx_auth.sh
    2. Add the following properties to the file:
      export CASS_JMX_USERNAME=JMX_USERNAME
      export CASS_JMX_PASSWORD=JMX_PASSWORD
    3. Save the jmx_auth.sh file.
    4. Source the file:
      source /opt/apigee/customer/application/jmx_auth.sh
  3. Copy and edit the jmxremote.password file:
    1. Copy the following file from your $JAVA_HOME directory to /opt/apigee/data/apigee-cassandra/:
      cp ${JAVA_HOME}/lib/management/jmxremote.password.template $APIGEE_ROOT/data/apigee-cassandra/jmxremote.password
    2. Edit the jmxremote.password file and add your JMX username and password using the following syntax:
      JMX_USERNAME JMX_PASSWORD

      Where JMX_USERNAME and JMX_PASSWORD are the JMX username and password you set previously.

    3. Make sure the file is owned by "apigee" and that the file mode is 400:
      chown apigee:apigee /opt/apigee/data/apigee-cassandra/jmxremote.password
      chmod 400 /opt/apigee/data/apigee-cassandra/jmxremote.password
  4. Copy and edit the jmxremote.access file:
    1. Copy the following file from your $JAVA_HOME directory to /opt/apigee/data/apigee-cassandra/:
      cp ${JAVA_HOME}/lib/management/jmxremote.access $APIGEE_ROOT/data/apigee-cassandra/jmxremote.access
    2. Edit the jmxremote.access file and add the following role:
      JMX_USERNAME readwrite
    3. Make sure the file is owned by "apigee" and that the file mode is 400:
      chown apigee:apigee /opt/apigee/data/apigee-cassandra/jmxremote.access
      chmod 400 /opt/apigee/data/apigee-cassandra/jmxremote.access
  5. Run configure on Cassandra:
    /opt/apigee/apigee-service/bin/apigee-service apigee-cassandra configure
  6. Restart Cassandra:
    /opt/apigee/apigee-service/bin/apigee-service apigee-cassandra restart
  7. Repeat this process on all other Cassandra nodes.

Enable JMX password encryption

To enable JMX password encryption, do the following steps:

  1. Open the file source/conf/casssandra-env.sh.
  2. Uncomment the following lines in the file:
    • JVM_OPTS="$JVM_OPTS -Djava.security.auth.login.config={T}conf_cassandra-env_java.security.auth.login.config{/T}"
    • JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.login.config=ApigeeSecureFileLoginModule"
  3. On the command line, generate SHA1 hash(es) of the desired password(s) by entering echo -n 'Secret' | openssl dgst -sha1
  4. Set the password(s) against the username in jmxremote.password.
  5. Change the file cassandra-env.sh back to read only after the update.

Enable JMX with SSL for Cassandra

Enabling JMX with SSL provides additional security and encryption for JMX-based communication with Cassandra. To enable JMX with SSL, you need to provide a key and a certificate to Cassandra to accept SSL-based JMX connections. You also need to configure nodetool (and any other tools that communicate with Cassandra over JMX) for SSL.

SSL-enabled JMX supports both plaintext and encrypted JMX passwords.

To enable JMX with SSL for Cassandra, use the following procedure:

  1. Enable JMX. Enable password encryption if required.
  2. Enable JMX authentication for Cassandra. as described above. Ensure nodetool is working with the configured username and password.
    /opt/apigee/apigee-cassandra/bin/nodetool -u <JMX_USER> -pw <JMX_PASS> ring
  3. Prepare keystore and truststore.

    • Keystore should contain a key and certificate, and is used to configure the Cassandra server. If keystore contains multiple key pairs, Cassandra uses the first key pair to enable SSL.

      Note that the passwords for keystore and the key should be the same (the default when you generate the key using keytool).

    • Truststore should contain the certificate only and is used by clients (apigee-service based commands or nodetool) to connect over JMX.

    After verifying the above requirements:

    1. Place the keystore file in /opt/apigee/data/apigee-cassandra.
    2. Ensure the keystore file is readable by Apigee user only by entering
      chown apigee:apigee /opt/apigee/data/apigee-cassandra/keystore.node1
      chmod 400 /opt/apigee/data/apigee-cassandra/keystore.node1
  4. Configure Cassandra for JMX with SSL by doing the following steps:
    1. Stop the Cassandra node by entering
      apigee-service apigee-cassandra stop
    2. Enable SSL in Cassandra by opening the file /opt/apigee/customer/application/cassandra.properties and adding the following line:
      conf_cassandra-env_com.sun.management.jmxremote.ssl=true

      The file should be owned by apigee:apigee.

    3. Enable SSL related configuration in Cassandra as follows. Open the file /opt/apigee/apigee-cassandra/source/conf/cassandra-env.sh and uncomment the following lines, changing the path /opt/apigee/data/apigee-cassandra/keystore.node1 and the keystore password as necessary.
      JVM_OPTS="$JVM_OPTS -Djavax.net.ssl.keyStore=/opt/apigee/data/apigee-cassandra/keystore.node1"
      JVM_OPTS="$JVM_OPTS -Djavax.net.ssl.keyStorePassword=keystore-password"
      JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.registry.ssl=true"
      Ensure that the file is owned by apigee:apigee.
    4. Start the Cassandra node by entering
      apigee-service apigee-cassandra start
  5. Configure the apigee-service Cassandra commands. You need to set certain environment variables while running apigee-service commands, including the ones below:
    apigee-service apigee-cassandra stop
    apigee-service apigee-cassandra wait_for_ready
    apigee-service apigee-cassandra ring
    apigee-service apigee-cassandra backup

    There are several options for configuring apigee-service for JMX authentication and SSL. Choose an option based on usability and your security practices.

    Option 1 (SSL arguments stored in file)

    Set the following environment variables:

    export CASS_JMX_USERNAME=ADMIN
    # Provide encrypted password here if you have setup JMX password encryption
    export CASS_JMX_PASSWORD=PASSWORD
    export CASS_JMX_SSL=Y

    Create a file in Apigee user’s home directory (/opt/apigee).

    $HOME/.cassandra/nodetool-ssl.properties

    Edit the file and add the following lines:

    -Djavax.net.ssl.trustStore=<path-to-truststore.node1>
    -Djavax.net.ssl.trustStorePassword=<truststore-password>
    -Dcom.sun.management.jmxremote.registry.ssl=true

    Make sure the trustore file is readable by Apigee user.

    Run the following apigee-service command. If it runs without error, your configurations are correct.

    apigee-service apigee-cassandra ring

    Option 2 (SSL arguments stored in environment variables)

    Set the following environment variables:

    export CASS_JMX_USERNAME=ADMIN
    # Provide encrypted password here if you have setup JMX password encryption
    export CASS_JMX_PASSWORD=PASSWORD
    export CASS_JMX_SSL=Y
    # Ensure the truststore file is accessible by Apigee user.
    export CASS_JMX_TRUSTSTORE=<path-to-trustore.node1>
    export CASS_JMX_TRUSTSTORE_PASSWORD=<truststore-password>

    Run the following apigee-service command. If it runs without error, your configurations are correct.

    apigee-service apigee-cassandra ring

    Option 3 (SSL arguments passed directly to apigee-service)

    Run any apigee-service command like the one below. You don't need to configure any environment variables.

    CASS_JMX_USERNAME=ADMIN CASS_JMX_PASSWORD=PASSWORD CASS_JMX_SSL=Y CASS_JMX_TRUSTSTORE=<path-to-trustore.node1> CASS_JMX_TRUSTSTORE_PASSWORD=<trustore-password> /opt/apigee/apigee-service/bin/apigee-service apigee-cassandra ring
  6. Set up nodetool. Nodetool requires JMX parameters to be passed to it. There are two ways you can configure nodetool to run with SSL-enabled JMX, as described in the configuration options below:

    The options differ in the way SSL related configurations are passed to nodetool. In both cases, the user running nodetool should have READ permissions on the truststore file. Choose an appropriate option based on usability and your security practices.

    To learn more about nodetool parameters, see the DataStax documentation.

    Configuration Option 1

    Create a file in the home directory of the user running nodetool.

    $HOME/.cassandra/nodetool-ssl.properties

    Add the following lines to the file:

    -Djavax.net.ssl.trustStore=<path-to-truststore.node1>
    -Djavax.net.ssl.trustStorePassword=<truststore-password>
    -Dcom.sun.management.jmxremote.registry.ssl=true

    The truststore path specified above should be accessible by any user running nodetool.

    Run nodetool with the --ssl option.

    /opt/apigee/apigee-cassandra/bin/nodetool --ssl -u <jmx-user-name> -pw <jmx-user-password> -h localhost ring

    Configuration option 2

    Run nodetool as a single command with the extra parameters listed below.

    /opt/apigee/apigee-cassandra/bin/nodetool -Djavax.net.ssl.trustStore=<path-to-truststore.node1> -Djavax.net.ssl.trustStorePassword=<truststore-password> -Dcom.sun.management.jmxremote.registry.ssl=true -Dssl.enable=true -u <jmx-user-name> -pw <jmx-user-password> -h localhost ring

Revert SSL configurations

If you need to revert the SSL configurations described in the procedure above, do the following steps:

  1. Stop apigee-cassandraby entering
    apigee-service apigee-cassandra stop
  2. Remove the line conf_cassandra-env_com.sun.management.jmxremote.ssl=true from the file /opt/apigee/customer/application/cassandra.properties.
  3. Comment out the following lines in /opt/apigee/apigee-cassandra/source/conf/cassandra-env.sh
    # JVM_OPTS="$JVM_OPTS -Djavax.net.ssl.keyStore=/opt/apigee/data/apigee-cassandra/keystore.node0"
    # JVM_OPTS="$JVM_OPTS -Djavax.net.ssl.keyStorePassword=keypass"
    # JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.registry.ssl=true”
  4. Start apigee-cassandra by entering
  5. apigee-service apigee-cassandra start
  6. Remove the environment variable CASS_JMX_SSL if it was set.

    unset CASS_JMX_SSL
  7. Check that apigee-service based commands like ring, stop, backup, and so on, are working.
  8. Stop using the --ssl switch with nodetool

Disable JMX authentication for Cassandra

To disable JMX authentication for Cassandra:

  1. Edit /opt/apigee/customer/application/cassandra.properties.
  2. Remove the following line in the file:
    conf_cassandra-env_com.sun.management.jmxremote.authenticate=true
  3. Run configure on Cassandra:
    /opt/apigee/apigee-service/bin/apigee-service apigee-cassandra configure
  4. Restart Cassandra:
    /opt/apigee/apigee-service/bin/apigee-service apigee-cassandra restart
  5. Repeat this process on all other Cassandra nodes.

Use JConsole: Monitor task statistics

Use JConsole and the following service URL to monitor the JMX attributes (MBeans) offered via JMX:

service:jmx:rmi:///jndi/rmi://IP_address:7199/jmxrmi

Where IP_address is the IP of the Cassandra server.

Cassandra JMX statistics

JMX MBeans JMX Attributes

ColumnFamilies/apprepo/environments

ColumnFamilies/apprepo/organizations

ColumnFamilies/apprepo/apiproxy_revisions

ColumnFamilies/apprepo/apiproxies

ColumnFamilies/audit/audits

ColumnFamilies/audit/audits_ref

PendingTasks

MemtableColumnsCount

MemtableDataSize

ReadCount

RecentReadLatencyMicros

TotalReadLatencyMicros

WriteCount

RecentWriteLatencyMicros

TotalWriteLatencyMicros

TotalDiskSpaceUsed

LiveDiskSpaceUsed

LiveSSTableCount

BloomFilterFalsePositives

RecentBloomFilterFalseRatio

BloomFilterFalseRatio

Use nodetool to manage cluster nodes

The nodetool utility is a command line interface for Cassandra that manages cluster nodes. The utility can be found at /opt/apigee/apigee-cassandra/bin.

The following calls can be made on all Cassandra cluster nodes:

  1. General ring info (also possible for single Cassandra node): Look for the "Up" and "Normal" for all nodes.
    nodetool [-u username -pw password] -h localhost ring

    You only need to pass your username and password if you enabled JMX authentication for Cassandra.

    The output of the above command looks as shown below:

    Datacenter: dc-1
    ==========
    Address            Rack     Status State   Load    Owns    Token
    192.168.124.201    ra1      Up     Normal  1.67 MB 33,33%  0
    192.168.124.202    ra1      Up     Normal  1.68 MB 33,33%  5671...5242
    192.168.124.203    ra1      Up     Normal  1.67 MB 33,33%  1134...0484
  2. General info about nodes (call per node)
    nodetool [-u username -pw password]  -h localhost info

    The output of the above command looks like the following:

    ID                     : e2e42793-4242-4e82-bcf0-oicu812
    Gossip active          : true
    Thrift active          : true
    Native Transport active: true
    Load                   : 273.71 KB
    Generation No          : 1234567890
    Uptime (seconds)       : 687194
    Heap Memory (MB)       : 314.62 / 3680.00
    Off Heap Memory (MB)   : 0.14
    Data Center            : dc-1
    Rack                   : ra-1
    Exceptions             : 0
    Key Cache              : entries 150, size 13.52 KB, capacity 100 MB, 1520781 hits, 1520923 requests, 1.000 recent hit rate, 14400 save period in seconds
    Row Cache              : entries 0, size 0 bytes, capacity 0 bytes, 0 hits, 0 requests, NaN recent hit rate, 0 save period in seconds
    Counter Cache          : entries 0, size 0 bytes, capacity 50 MB, 0 hits, 0 requests, NaN recent hit rate, 7200 save period in seconds
    Token                  : 0
  3. Status of the thrift server (serving client API)
    nodetool [-u username -pw password] -h localhost statusthrift

    The output of the above command looks like the following:

    running
  4. Status of data streaming operations: Observe traffic for cassandra nodes:
    nodetool [-u username -pw password] -h localhost netstats

    The output of the above command looks like the following:

    Mode: NORMAL
    Not sending any streams.
    Read Repair Statistics:
    Attempted: 151612
    Mismatch (Blocking): 0
    Mismatch (Background): 0
    Pool Name                    Active   Pending      Completed   Dropped
    Commands                        n/a         0              0         0
    Responses                       n/a         0              0       n/a

For more info on nodetool, see About the nodetool utility.

Cassandra resource

Refer to the following URL: http://www.datastax.com/docs/1.0/operations/monitoring.

Apache ZooKeeper

Check ZooKeeper status

  1. Ensure the ZooKeeper process is running. ZooKeeper writes a PID file to opt/apigee/var/run/apigee-zookeeper/apigee-zookeeper.pid.
  2. Test ZooKeeper ports to ensure that you can establish a TCP connection to ports 2181 and 3888 on every ZooKeeper server.
  3. Ensure that you can read values from the ZooKeeper database. Connect using a ZooKeeper client library (or /opt/apigee/apigee-zookeeper/bin/zkCli.sh) and read a value from the database.
  4. Check the status:
    /opt/apigee/apigee-service/bin/apigee-service apigee-zookeeper status

Use ZooKeeper four-letter words

ZooKeeper can be monitored via a small set of commands (four-letter words) that are sent to the port 2181 using netcat (nc) or telnet.

For more info on ZooKeeper commands, see: Apache ZooKeeper command reference.

For example:

  • srvr: Lists full details for the server.
  • stat: Lists brief details for the server and connected clients.

The following commands can be issued to the ZooKeeper port:

  1. Run the four-letter command ruok to test if server is running in a non-error state. A successful response returns "imok".
    echo ruok | nc host 2181

    Returns:

    imok
  2. Run the four-letter command, stat, to list server performance and connected clients statistics:
    echo stat | nc host 2181

    Returns:

    Zookeeper version: 3.4.5-1392090, built on 09/30/2012 17:52 GMT
    Clients:
    /0:0:0:0:0:0:0:1:33467[0](queued=0,recved=1,sent=0)
    /192.168.124.201:42388[1](queued=0,recved=8433,sent=8433)
    /192.168.124.202:42185[1](queued=0,recved=1339,sent=1347)
    /192.168.124.204:39296[1](queued=0,recved=7688,sent=7692)
    Latency min/avg/max: 0/0/128
    Received: 26144
    Sent: 26160
    Connections: 4
    Outstanding: 0
    Zxid: 0x2000002c2
    Mode: follower
    Node count: 283
  3. If netcat (nc) is not available, you can use the python as an alternative. Create a file named zookeeper.py that contains the following:
    import time, socket,
    sys c = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    c.connect((sys.argv[1], 2181))
    c.send(sys.argv[2])
    time.sleep(0.1)
    print c.recv(512)

    Now run the following python lines:

    python zookeeper.py 192.168.124.201 ruok
    python zookeeper.py 192.168.124.201 stat

LDAP level test

You can monitor OpenLDAP to see whether the specific requests are served properly. In other words, check for a specific search that returns the right result.

  1. Use ldapsearch (yum install openldap-clients) to query the entry of the system admin. This entry is used to authenticate all API calls.
    ldapsearch -b "uid=admin,ou=users,ou=global,dc=apigee,dc=com" -x -W -D "cn=manager,dc=apigee,dc=com" -H ldap://localhost:10389 -LLL

    You are then prompted for the LDAP admin password:

    Enter LDAP Password:

    After entering the password, you see a response in the form:

    dn:
    uid=admin,ou=users,ou=global,dc=apigee,dc=com
    objectClass: organizationalPerson
    objectClass: person
    objectClass: inetOrgPerson
    objectClass: top
    uid: admin
    cn: admin
    sn: admin
    userPassword:: e1NTSEF9bS9xbS9RbVNXSFFtUWVsU1F0c3BGL3BQMkhObFp2eDFKUytmZVE9PQ=
     =
    mail: opdk@google.com
  2. Check whether Management Server is still connected to LDAP with the following command:
    curl -u userEMail:password http://localhost:8080/v1/users/ADMIN

    Returns:

    {
      "emailId" : ADMIN,
      "firstName" : "admin",
      "lastName" : "admin"
    }

You can also monitor the OpenLDAP caches, which help in reducing the number of disk accesses and hence improve the performance of the system. Monitoring and then tuning the cache size in the OpenLDAP server can heavily impact the performance of the directory server. You can view the log files (opt/apigee/var/log) to obtain information about cache.