Python script made to monitor JVM keystore cert dates for Zabbix. Only basic Python modules and zabbix_sender used.

NB! This script has been currently written for and tested with python2.7, but it should work with python3 also!

• Script scans keystore for cert aliases.
• Finds per alias cert dates for "valid from" and "valid until".
• Generates json string from found aliases (for zabbix discovery).
• Sends discovery (json string) to zabbix to create all item prototypes (zabbix_sender used).
• Updates created discovery items with unix timestamp values (zabbix_sender used).

Currently script only logs to stdout. config.json is required and file paths there should be configured before running script.

PS.

To simulate empty password for keystore (-storepass "") write "None" as keystore_pass value in config. Leaving password empty in config ("") will not add -storepass to keytool execute.

• run from linux command line:

  python zabbix_discovery -k /path/to/keystore -c /path/to/config.json

• crontab entry example:

  # monitor keystore certs with zabbix_sender (every morning @ 06:15)
  15 06 * * *     /usr/bin/python /data/scripts/keystore_discovery.py -k /data/tomcat/keystore.jks -c /data/scripts/config.json > /dev/null 2>&1
  

1. Create new template

   • Zabbix -> Configuration -> Templates -> "Create template"

     Name: "JVM keystore"

2. Create discovery rule for template

   • Zabbix -> Template "JVM keystore" -> Create discovery rule

     Name: keystore discovery
     Type: Zabbix trapper
     Key: jvm.keystore.discovery
     Keep lost resources period (in days): 30
     Enabled [x]
     

3. Create item prototypes

   Template "JVM keystore" -> Discovery rules -> Item Prototypes -> create item prototype

   • Cert "valid from" item prototype:

     Name: Cert: "{#KEYALIAS}" start date
     Type: Zabbix trapper
     Key: jvm.keystore.startdate[{#KEYALIAS}]
     Type of information: Numeric (unsigned)
     Data type: Decimal
     Units: unixtime
     Show value: As is
     Application: JVM_KEYSTORE
     Create enabled [x]
     Discover [x]
     

   • Cert "valid until" item prototype:

     Name: Cert: "{#KEYALIAS}" end date
     Type: Zabbix trapper
     Key: jvm.keystore.enddate[{#KEYALIAS}]
     Type of information: Numeric (unsigned)
     Data type: Decimal
     Units: unixtime
     Show value: As is
     Application: JVM_KEYSTORE
     Create enabled [x]
     Discover [x]
     

4. Create trigger prototypes (customize for your need)

   • Trigger: "[warning] No data received for item in 3 days":

     Name: Keystore cert "{#KEYALIAS}" no data received for item in last 3 days!
     Expression: 
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].nodata(3d)}=1
     Severity: Warning
     Create enabled: [x]
     Discovery: [x]
     

   • Trigger: "[high] Cert start date in future":

     Name: Keystore cert "{#KEYALIAS}" start date in future! Start date: {ITEM.LASTVALUE}
     Expression: 
         {JVM keystore:jvm.keystore.startdate[{#KEYALIAS}].last()}
         -
         {JVM keystore:jvm.keystore.startdate[{#KEYALIAS}].now()}>1s
     Severity: High
     Create enabled: [x]
     Discovery: [x]
     

   • Trigger: "[high] Cert expired":

     Name: Keystore cert "{#KEYALIAS}" is expired! Expiry date: {ITEM.LASTVALUE}
     Expression: 
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].now()}
         -
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].last()}>1s
     Severity: High
     Create enabled: [x]
     Discovery: [x]
     

   • Trigger: "[average] Cert will expire in 7 days":

     Name: Keystore cert "{#KEYALIAS}" will expire in 7 days! Expiry date: {ITEM.LASTVALUE}
     Expression: 
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].last()}
         -
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].now()}<7d
     Severity: Average
     Create enabled: [x]
     Discovery: [x]
     

     • Trigger depends on: "[high] Cert expired":

       Dependencies -> Add prototype:
           JVM keystore: Keystore cert "{#KEYALIAS}" is expired! Expiry date: {ITEM.LASTVALUE}
       

   • Trigger: "[warning] Cert will expire in 30 days":

     Name: Keystore cert "{#KEYALIAS}" will expire in 30 days! Expiry date: {ITEM.LASTVALUE}
     Expression: 
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].last()}
         -
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].now()}<30d
     Severity: Warning
     Create enabled: [x]
     Discovery: [x]
     

     • Trigger depends on: "[average] Cert will expire in 7 days":

       Dependencies -> Add prototype:
           JVM keystore: Keystore cert "{#KEYALIAS}" will expire in 7 days! Expiry date: {ITEM.LASTVALUE}
       

   • Trigger: "[info] Cert will expire in 60 days":

     Name: Keystore cert "{#KEYALIAS}" will expire in 60 days! Expiry date: {ITEM.LASTVALUE}
     Expression: 
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].last()}
         -
         {JVM keystore:jvm.keystore.enddate[{#KEYALIAS}].now()}<60d
     Severity: Information
     Create enabled: [x]
     Discovery: [x]
     

     • Trigger depends on: "[warning] Cert will expire in 30 days":

       Dependencies -> Add prototype:
           JVM keystore: Keystore cert "{#KEYALIAS}" will expire in 30 days! Expiry date: {ITEM.LASTVALUE}
       

5. Start using template :)