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check_pve

Icinga check command for Proxmox VE via API

Setup

Requirements

This check command depends on Python 3 and the following modules:

  • requests
  • argparse
  • packaging

Installation on Debian / Ubuntu

apt install python3 python3-requests python3-packaging

Installation on Redhat 7 / CentOS 7

yum install python36 python36-requests python36-packaging

Installation on FreeBSD

pkg install python3 py39-requests py39-packaging

Installation from requirements file

pip3 install -r requirements.txt

Installation as Docker container

docker build -t check_pve .

After this, you can start the container like so:

docker run -d --name check_pve --rm check_pve

The container will keep running without having the need for any of the requirements listed above (for environments that do not support this). Running a check is as simple as:

docker exec check_pve python check_pve.py ....rest of the default arguments listed below....

Create a API user in Proxmox VE

Create a role named Monitoring and assign necessary privileges:

pveum roleadd Monitoring
pveum rolemod Monitoring --privs VM.Monitor,Sys.Audit,Datastore.Audit,VM.Audit

Create a user named monitoring and set password:

pveum useradd monitoring@pve --comment "The ICINGA 2 monitoring user"

Use token based authorization (recommended)

Create an API token named monitoring for the user monitoring:

pveum user token add monitoring@pve monitoring

Please save the token secret as there isn't any way to fetch it at a later point.

Assign role monitoring to token monitoring and the user monitoring@pve:

pveum acl modify / --roles Monitoring --user 'monitoring@pve'
pveum acl modify / --roles Monitoring --tokens 'monitoring@pve!monitoring'

Use password based authorization

Set password for the user monitoring:

pveum passwd monitoring@pve

Assign monitoring role to user monitoring

pveum acl modify / --users monitoring@pve --roles Monitoring

For further information about the Proxmox VE privilege system have a look into the documentation.

Usage

The icinga2 folder contains the command definition and service examples for use with Icinga2.

usage: check_pve.py [-h] -e API_ENDPOINT [--api-port API_PORT] -u API_USER (-p API_PASSWORD | -t API_TOKEN) [-k] -m
                    {cluster,version,cpu,memory,swap,storage,io_wait,updates,services,subscription,vm,vm_status,replication,disk-health,ceph-health,zfs-health,zfs-fragmentation} [-n NODE] [--name NAME] [--vmid VMID]
                    [--expected-vm-status {running,stopped,paused}] [--ignore-vm-status] [--ignore-service NAME] [--ignore-disk NAME] [-w THRESHOLD_WARNING] [-c THRESHOLD_CRITICAL] [-M] [-V MIN_VERSION] [--unit {GB,MB,KB,GiB,MiB,KiB,B}]

Check command for PVE hosts via API

options:
  -h, --help            show this help message and exit

API Options:
  -e API_ENDPOINT, --api-endpoint API_ENDPOINT
                        PVE api endpoint hostname
  --api-port API_PORT   PVE api endpoint port
  -u API_USER, --username API_USER
                        PVE api user (e.g. icinga2@pve or icinga2@pam, depending on which backend you have chosen in proxmox)
  -p API_PASSWORD, --password API_PASSWORD
                        PVE API user password
  -t API_TOKEN, --api-token API_TOKEN
                        PVE API token (format: TOKEN_ID=TOKEN_SECRET
  -k, --insecure        Don't verify HTTPS certificate

Check Options:
  -m {cluster,version,cpu,memory,swap,storage,io_wait,updates,services,subscription,vm,vm_status,replication,disk-health,ceph-health,zfs-health,zfs-fragmentation}, --mode {cluster,version,cpu,memory,swap,storage,io_wait,updates,services,subscription,vm,vm_status,replication,disk-health,ceph-health,zfs-health,zfs-fragmentation}
                        Mode to use.
  -n NODE, --node NODE  Node to check (necessary for all modes except cluster and version)
  --name NAME           Name of storage, vm, or container
  --vmid VMID           ID of virtual machine or container
  --expected-vm-status {running,stopped,paused}
                        Expected VM status
  --ignore-vm-status    Ignore VM status in checks
  --ignore-service NAME
                        Ignore service NAME in checks
  --ignore-disk NAME    Ignore disk NAME in health check
  -w THRESHOLD_WARNING, --warning THRESHOLD_WARNING
                        Warning threshold for check value. Mutiple thresholds with name:value,name:value
  -c THRESHOLD_CRITICAL, --critical THRESHOLD_CRITICAL
                        Critical threshold for check value Mutiple thresholds with name:value,name:value
  -M                    Values are shown in the unit which is set with --unit (if available). Thresholds are also treated in this unit
  -V MIN_VERSION, --min-version MIN_VERSION
                        The minimal pve version to check for. Any version lower than this will return CRITICAL.
  --unit {GB,MB,KB,GiB,MiB,KiB,B}
                        Unit which is used for performance data and other values

Check examples

Check cluster health

./check_pve.py -u <API_USER> -t <API_TOKEN> -e <API_ENDPOINT> -m cluster
OK - Cluster 'proxmox1' is healthy'

Check PVE version

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m version -V 5.0.0
OK - Your pve instance version '5.2' (0fcd7879) is up to date

Check CPU load

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m cpu -n node1
OK - CPU usage is 2.4%|usage=2.4%;;

Check memory usage

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m memory -n node1
OK - Memory usage is 37.44%|usage=37.44%;; used=96544.72MB;;;257867.91

Check disk-health

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m disk-health -n node1
OK - All disks are healthy|wearout_sdb=96%;; wearout_sdc=96%;; wearout_sdd=96%;; wearout_sde=96%;;

Check storage usage

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m storage -n node1 --name local
OK - Storage usage is 54.23%|usage=54.23%;; used=128513.11MB;;;236980.36

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m storage -n node1 --name vms-disx
CRITICAL - Storage 'vms-disx' doesn't exist on node 'node01'

Check subscription status

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m subscription -n node1 -w 50 -c 10
OK - Subscription of level 'Community' is valid until 2019-01-09

Check VM status

Without specifying a node name:

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m vm --name test-vm
OK - VM 'test-vm' is running on 'node1'|cpu=1.85%;; memory=8.33%;;

You can also pass a container name for the VM check:

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m vm --name test-lxc
OK - LXC 'test-lxc' on node 'node1' is running|cpu=0.11%;; memory=13.99%;;

With memory thresholds:

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m vm --name test-vm -w 50 -c 80
OK - VM 'test-vm' is running on 'node1'|cpu=1.85%;; memory=40.33%;50.0;80.0

With a specified node name, the check plugin verifies on which node the VM runs.

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m vm -n node1 --name test-vm
OK - VM 'test-vm' is running on node 'node1'|cpu=1.85%;; memory=8.33%;;

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m vm -n node1 --name test-vm
WARNING - VM 'test-vm' is running on node 'node2' instead of 'node1'|cpu=1.85%;; memory=8.33%;;

If you only want to gather metrics and don't care about the vm status add the --ignore-vm-status flag:

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m vm --name test-vm --ignore-vm-status
OK - VM 'test-vm' is not running

Specify the expected VM status:

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m vm --name test-vm --expected-vm-status stopped
OK - VM 'test-vm' is not running

For hostalive checks without gathering performance data use vm_status instead of vm. The parameters are the same as with vm.

Check swap usage

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m swap -n pve
OK - Swap usage is 0.0 %|usage=0.0%;; used=0.0MB;;;8192.0

Check storage replication status

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m replication -n node1
OK - No failed replication jobs on node1

Check ceph cluster health

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m ceph-health
WARNING - Ceph Cluster is in warning state

Check ZFS pool health

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m zfs-health -n pve 
OK - All ZFS pools are healthy

Check for specific pool:

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m zfs-health -n pve --name rpool
OK - ZFS pool 'rpool' is healthy

Check ZFS pool fragmentation

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m zfs-fragmentation -n pve -w 40 -c 60
CRITICAL - 2 of 2 ZFS pools are above fragmentation thresholds:

- rpool (71 %) is CRITICAL
- diskpool (50 %) is WARNING
|fragmentation_diskpool=50%;40.0;60.0 fragmentation_rpool=71%;40.0;60.0

Check for specific pool:

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m zfs-fragmentation -n pve --name diskpool -w 40 -c 60
WARNING - Fragmentation of ZFS pool 'diskpool' is above thresholds: 50 %|fragmentation=50%;40.0;60.0

FAQ

Individual thresholds per metric

You can either specify a threshold for warning or critical which is applied to all metrics or define individual thresholds like this (name:value,name:value,...):

./check_pve.py -u <API_USER> -p <API_PASSWORD> -e <API_ENDPOINT> -m vm --name test-vm -w memory:50 -c cpu:50,memory:80
OK - VM 'test-vm' is running on 'node1'|cpu=1.85%;50.0; memory=40.33%;50.0;80.0

Could not connect to PVE API: Failed to resolve hostname

Verify that your DNS server is working and can resolve your hostname. If everything is fine check for proxyserver environment variables (HTTP_PROXY,HTTPS_PROXY), which maybe not allow communication to port 8006.

Contributors

Thank you to everyone, who is contributing to check_pve: https://github.com/nbuchwitz/check_pve/graphs/contributors.