headctlΒΆ
NAME
headctl -- Manage head node network communication settings.
USAGE
headctl[-h | --help][--status][--prefer-http][--prefer-https][--enable-https][--disable-https][--enable-xsendfile][--disable-xsendfile]
DESCRIPTION
This is a low-level tool that directly manipulates configuration
settings for head node network communication.
When controlling HTTP/HTTPS settings,
it modifies /opt/scyld/clusterware/conf/base.ini and two
Apache configuration files in /etc/http/conf.d/: ssl.conf and
clusterware.conf. When enabling XSendfile support, the tool may
install necessary RPMs as well as update variables in the base.ini.
Since the earliest boot steps cannot use encrypted communications, DHCP and PXE booting are not affected by these settings. Communications starting with initramfs execution will use HTTP or HTTPS as instructed by this command.
The tool resides in /opt/scyld/clusterware/bin/headctl
and must be executed by user root.
OPTIONAL ARGUMENTS
- -h, --help
Print usage message and exit. Ignore trailing args, parse and ignore preceding args.
- --status
Report the configuration of the ClusterWare service.
- --prefer-http
Instruct compute nodes to use HTTP.
- --prefer-https
Instruct compute nodes to use HTTPS where possible.
- --enable-https
Proxy through
/etc/http/conf.d/ssl.conf.- --disable-https
Do not proxy through
/etc/http/conf.d/ssl.conf.- --minimal-ipv6
Confirm the radvd is running on our interfaces by optionally installing radvd, adding blocks to the radvd.conf, and restarting the service if necessary.
- --enable-xsendfile
Use the Apache XSendfile header when clients download files.
- --disable-xsendfile
Do not use the Apache XSendfile header.
EXAMPLES
RETURN VALUES
Upon successful completion, headctl returns 0.
On failure, an error message is printed to stderr and
headctl returns 1.