Role Name

You can look at the official XrootD documentation for detailed information about the tool:

• basic configuration
• cmsd configuration
• proxy file cache

Requirements

• Ansible 2.4
• OS: Centos7
• valid CMS /etc/vomses
• Port: one open service port
• Valid grid host certifate
• Valid service certificate that is able to read from AAA (/etc/grid-security/xrd/xrdcert.pem, /etc/grid-security/xrd/xrdkey.pem)

Role Variables

BLOCK_SIZE: 512k # size of the file block used by the cache
CACHE_LOG_LEVEL: info # server log level
CACHE_PATH: /data/xrd # folder for cached files
CACHE_RAM_GB: 12 # amount of RAM for caching in GB. Suggested ~50% of the total
HI_WM: "0.9" # higher watermark of used fs space
LOW_WM: "0.8" # lower watermark of used fs space
N_PREFETCH: "0" # number of blocks to be prefetched
ORIGIN_HOST: origin # hostname or ip adrr of the origin server
ORIGIN_XRD_PORT: "1094" # xrootd port to contact origin on
REDIR_HOST: xcache-service # hostname or ip adrr of the cache redirector
REDIR_CMSD_PORT: "31213" # cmsd port of the cache redirector
metricbeat_polltime: 60s # polling time of the metricbeat sensor
metric_sitename: changeme # sitename to be displayed for monitoring
elk_endpoint: localhost:9000 # elasticsearch endpoint url
elastic_username: dodas # elasticsearch username
elastic_password: testpass # elasticsearch password

Example Playbook

---
- hosts: localhost
  remote_user: root
  roles:
    - role: cloudpg.cachingondemand 

Author Information

diego.ciangottini@cern.ch