76 lines
2.4 KiB
Text
76 lines
2.4 KiB
Text
Using rbldnsd with systemd
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==========================
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The traditional SysV initscript shipped with rbldnsd supports using
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multiple instances with arbitrary command lines. This is difficult
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to achieve with systemd so a wrapper script, rbldnsctl, has been
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provided to assist with the creation and use of native systemd unit
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files for each required instance, using exactly the same configuration
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in /etc/sysconfig/rbldnsd as the SysV initscript used.
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Having edited /etc/sysconfig/rbldnsd to specify the rbldnsd
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instance(s) required, individual unit files for each instance can be
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created by:
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rbldnsctl create
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This creates unit files /etc/systemd/system/rbldnsd-<instancename>.service
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for each required instance. These units can then be manipulated
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individually using /bin/systemctl as usual, or all at once by using
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other rbldnsctl commands:
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rbldnsctl enable
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This enables all configured rbldnsd instances to start at boot time
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(equivalent of chkconfig rbldnsd on).
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rbldnsctl disable
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This disables all configured rbldnsd instances from starting at boot time
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(equivalent of chkconfig rbldnsd off).
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rbldnsctl start
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This starts all configured rbldnsd instances immediately
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(equivalent of service rbldnsd start).
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rbldnsctl stop
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This stops all configured rbldnsd instances
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(equivalent of service rbldnsd stop).
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rbldnsctl reload
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This reloads all configured rbldnsd instances
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(equivalent of service rbldnsd reload).
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rbldnsctl restart
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This restarts all configured rbldnsd instances
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(equivalent of service rbldnsd restart).
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rbldnsctl condrestart
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rbldnsctl try-restart
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These restart all configured rbldnsd instances immediately, if they are
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already running (equivalent of service rbldnsd condrestart).
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rbldnsctl status
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This shows status of all configured rbldnsd instances
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(equivalent of service rbldnsd status).
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When editing /etc/sysconfig/rbldnsd to specify rbldnsd instance options,
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bear in mind:
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* systemd prefers the daemons it controls not to fork, so the unit files
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created by rbldnsctl start rbldnsd with the "-n" option to prevent
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it from forking; this also means that systemd knows the PIDs of all
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instances itself, so there is no need to specify any forking/pidfile related
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options in /etc/sysconfig/rbldnsd
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* if you want just a single instance of rbldnsd and use the traditional "-"
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identifier for it, rbldnsctl will create a unit file
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/etc/systemd/system/rbldnsd-single.service, i.e. the instance name will be
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set to "single"
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