Logging and Notifications

Logging

The Juniper Cloud-Native Router pods and containers use syslog as their logging mechanism. You can determine the location of the log files at the deployment time by retaining or changing the value of the log_path key in the values.yaml file. By default, the location of the log files is /var/log/jcnr. The system stores log files from all the cloud-native router pods and containers in the log_path directory.

In addition, a syslog-ng pod stores event notification data in JSON format on the host server. The syslog-ng pod stores the JSON-formatted notifications in the directory specified by the syslog_notifications key in the values.yaml file. By default, the file location is /var/log/jcnr and the filename is jcnr_notifications.json. You can change the location and filename by changing the value of the syslog_notifications key before the cloud-native router deployment.

When you use the default file locations, the /var/log/jcnr directory displays the following files:

Note: The host server must manage the log rotation for the contrail-vrouter-dpdk.log and the jcnr-cni.log files.

Notifications

The syslog-ng pod continuously monitors the preceding log files for notification events such as interface up, interface down, interface add, and so on. When these events appear in a log file, syslog-ng converts the log events into notification events and stores the events in JSON format within the syslog_notifications file configured in the values.yaml file.

Here is a sample of syslog-ng notifications:

Table 1: Supported Notifications

Notification	Source Pod
License Near Expiry​	cRPD
License Expired	cRPD
License Invalid​	cRPD
License OK​	cRPD
License Grace Period	cRPD
License Not Present	cRPD
JCNR Init Success​	Deployer
JCNR Init Failure​	Deployer
JCNR Graceful Shutdown Request	Deployer
JCNR Graceful Shutdown Complete	Deployer
JCNR Graceful Shutdown Failure	Deployer
JCNR Restart	Deployer
JCNR Upgrade Success	Deployer
JCNR Upgrade Failure	Deployer
Upstream Fabric Bond Member Link Up​	vRouter
Upstream Fabric Bond Member Link Down​	vRouter
Upstream Fabric Bond Link Up​	vRouter
Upstream Fabric Bond Link Down​	vRouter
Upstream Fabric Bond Link Switchover	vRouter
Downstream Fabric Link Up​	vRouter
Downstream Fabric Link Down​	vRouter
Appliance Link Up​	vRouter
Appliance Link Down​	vRouter
Any JCNR Application Critical Errors​	vRouter
Any JCNR Application Warnings	vRouter
Any JCNR Application Info	vRouter
JCNR Rate Limits Reached	vRouter
JCNR MAC Table Limit Reached​	vRouter
JCNR CLI Start​	cRPD or vRouter-Agent
JCNR CLI Stop​	cRPD or vRouter-Agent
JCNR Kernel App Interface Up​	vRouter
JCNR Kernel App Interface Down​	vRouter
JCNR Virtio User Interface Up​	vRouter
JCNR Virtio User Interface Down​	vRouter