Performance Co-Pilot (PCP) is an open source, distributed, metrics gathering and analysis system. In the latest release of Red Hat Enterprise Linux (i.e. 7.2), we're not only shipping PCP 3.10.6, but a new browser based dashboard, Vector, which is built on top of PCP, and contributed by Netflix. Together, they can provide a comprehensive overview of a local, or remote machine.
In this tutorial, we'll be utilizing two different machines to demonstrate
this powerful functionality.
The environment: our local machine is currently running Red Hat Enterprise Linux 7.2 (with the server-optional repo enabled for the dashboard packages) and a remote server (also on RHEL 7.2) is running our theoretical workload.
First, we want to get the PCP components up and running on our local workstation.
To do this, we'll need to set up PCP's Collector Daemon (PMCD), the Performance Metrics Web Daemon (pmwebd), as well as installing the vector bundle.
# yum install pcp-webapp-vector pcp-webapi # systemctl start pmcd pmwebd # systemctl enable pmcd pmwebd
Next - we'll check the output of running $pcp on the command line:
[lberk@toium ~]$ pcp Performance Co-Pilot configuration on toium: platform: Linux toium 3.10.0-327.el7.x86_64 #1 SMP Thu Oct 29 17:29:29 EDT 2015 x86_64 hardware: 4 cpus, 2 disks, 1 node, 3831MB RAM timezone: EST+5 services: pmcd pmwebd pmcd: Version 3.10.6-1, 7 agents, 1 client pmda: root pmcd proc xfs linux mmv jbd2
At this point, by pointing our browser to:
http://localhost:44323/vector/index.html#/?host=localhost:44323&hostspec=localhost
...we'll be able to use an instance of Vector, communicating with our local pmwebd, displaying metrics about our localhost.
The screen should look something like this:
The default dashboard has metrics related to CPU usage, network, memory, and disk usage. However, we can explore a few more metrics about each subsystem by adding them via the 'widget' button. Below is an example adding the 'context switches' metric to a CPU focused dashboard.
While we are viewing and consuming the metrics on our local workstation, it wouldn't make sense to run our dashboard on the same server running our mission critical application. Luckily, PCP's distributed architecture allows for Vector to point our local pmwebd at remote pmcds (performance metric collection daemons).
To illustrate this, we'll set up our remote RHEL7 system to consume metrics through Vector.
# yum install pcp # firewall-cmd --add-port=44321/tcp --permanent # firewall-cmd --reload # systemctl start pmcd # systemctl enable pmcd [lberk@rhel7 ~]$ pcp Performance Co-Pilot configuration on rhel7: platform: Linux rhel7 3.10.0-327.el7.x86_64 #1 SMP Thu Oct 29 17:29:29 EDT 2015 x86_64 hardware: 2 cpus, 1 disk, 1 node, 1840MB RAM timezone: MST+7 services: pmcd pmcd: Version 3.10.6-1, 7 agents, 2 clients pmda: root pmcd proc xfs linux mmv jbd2
Now, back on our dashboard, the 'hostname' refers to the system which pmwebd is located on (still using localhost). If we hit the (+) operator however, the drop down field lists the Hostspec entry. We'll need to change this Hostspec field to the rhel7 hostname (in our case: 'rhel7'), such as in our screenshot.
This Hostspec field can be used as a typical pmcd host specification, complete with the ability to monitor container instances on a specific host. It can also be pointed at any running pmcd from PCP version 3.10.4 and upward (making it compatible, for instance, with hosts running Red Hat Enterprise 6.7).
Interested in learning more? Click here. Alternatively, do feel free to reach out with questions using the comments section (below).
Sull'autore
Ricerca per canale
Automazione
Novità sull'automazione IT di tecnologie, team e ambienti
Intelligenza artificiale
Aggiornamenti sulle piattaforme che consentono alle aziende di eseguire carichi di lavoro IA ovunque
Hybrid cloud open source
Scopri come affrontare il futuro in modo più agile grazie al cloud ibrido
Sicurezza
Le ultime novità sulle nostre soluzioni per ridurre i rischi nelle tecnologie e negli ambienti
Edge computing
Aggiornamenti sulle piattaforme che semplificano l'operatività edge
Infrastruttura
Le ultime novità sulla piattaforma Linux aziendale leader a livello mondiale
Applicazioni
Approfondimenti sulle nostre soluzioni alle sfide applicative più difficili
Serie originali
Raccontiamo le interessanti storie di leader e creatori di tecnologie pensate per le aziende
Prodotti
- Red Hat Enterprise Linux
- Red Hat OpenShift
- Red Hat Ansible Automation Platform
- Servizi cloud
- Scopri tutti i prodotti
Strumenti
- Formazione e certificazioni
- Il mio account
- Supporto clienti
- Risorse per sviluppatori
- Trova un partner
- Red Hat Ecosystem Catalog
- Calcola il valore delle soluzioni Red Hat
- Documentazione
Prova, acquista, vendi
Comunica
- Contatta l'ufficio vendite
- Contatta l'assistenza clienti
- Contatta un esperto della formazione
- Social media
Informazioni su Red Hat
Red Hat è leader mondiale nella fornitura di soluzioni open source per le aziende, tra cui Linux, Kubernetes, container e soluzioni cloud. Le nostre soluzioni open source, rese sicure per un uso aziendale, consentono di operare su più piattaforme e ambienti, dal datacenter centrale all'edge della rete.
Seleziona la tua lingua
Red Hat legal and privacy links
- Informazioni su Red Hat
- Opportunità di lavoro
- Eventi
- Sedi
- Contattaci
- Blog di Red Hat
- Diversità, equità e inclusione
- Cool Stuff Store
- Red Hat Summit