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README: document the installation as an executable without TCP

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Lars Kruse 2020-02-06 06:55:48 +01:00
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41
README.md
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@ -100,7 +100,33 @@ cp munin-node /usr/local/bin
chmod +x /usr/local/bin/munin-node
```
Add munin port to `/etc/services`:
Two typical ways of using MuninLite as a `munin-node` replacement are:
* direct execution: suitable for remote hosts lacking root access (e.g. shared host)
* TCP service via inetd/xinetd: providing a service that is accessible via TCP (like `munin-node`)
Both approaches are detailed below.
Installation for direct execution
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Configure the `address` setting of the node in the master's configuration with
a suitable transport, e.g.:
```
[some.host.tld]
address ssh://node-a.example.org/usr/local/bin/munin-node
```
The above example causes the master to connect to the node via ssh and to
execute the MuninLite script directly. The running script responds to request
from standard input just like it would do as a TCP service via inetd/xinetd.
Installation as a TCP service (inetd/xinetd)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Add munin port to `/etc/services` (in case it is missing):
```shell
echo "munin 4949/tcp lrrd # Munin" >>/etc/services
```
@ -132,7 +158,7 @@ iptables -A INPUT -p tcp --dport munin --source 10.42.42.25 -j ACCEPT
Test
----
To test script, just run it (`/usr/bin/local/munin-node`):
To test the script, just run it (`/usr/bin/local/munin-node`):
```shell
$ /usr/local/bin/munin-node
# munin node at localhost.localdomain
@ -173,10 +199,19 @@ There is no specific configuration for plugins.
Munin configuration
-------------------
Configure your /etc/munin/munin.conf as you would for a regular
munin-node.
`munin-node`, if you configured MuninLite as a TCP service (e.g. via
inetd/xinetd):
```
[some.host.tld]
address 10.42.42.25
use_node_name yes
```
In case of direct execution of MuninLite on the remote host (without a TCP
service), you need to configure a transport and execute the script directly:
```
[some.host.tld]
address ssh://10.42.42.25/usr/local/bin/munin-node
use_node_name yes
```