1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
<!--startmeta
custom_edit_url: "https://github.com/netdata/netdata/edit/master/collectors/charts.d.plugin/libreswan/README.md"
meta_yaml: "https://github.com/netdata/netdata/edit/master/collectors/charts.d.plugin/libreswan/metadata.yaml"
sidebar_label: "Libreswan"
learn_status: "Published"
learn_rel_path: "Data Collection/VPNs"
most_popular: False
message: "DO NOT EDIT THIS FILE DIRECTLY, IT IS GENERATED BY THE COLLECTOR'S metadata.yaml FILE"
endmeta-->
# Libreswan
<img src="https://netdata.cloud/img/libreswan.png" width="150"/>
Plugin: charts.d.plugin
Module: libreswan
<img src="https://img.shields.io/badge/maintained%20by-Netdata-%2300ab44" />
## Overview
Monitor Libreswan performance for optimal IPsec VPN operations. Improve your VPN operations with Netdata''s real-time metrics and built-in alerts.
The collector uses the `ipsec` command to collect the information it needs.
This collector is supported on all platforms.
This collector supports collecting metrics from multiple instances of this integration, including remote instances.
### Default Behavior
#### Auto-Detection
This integration doesn't support auto-detection.
#### Limits
The default configuration for this integration does not impose any limits on data collection.
#### Performance Impact
The default configuration for this integration is not expected to impose a significant performance impact on the system.
## Metrics
Metrics grouped by *scope*.
The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.
### Per IPSEC tunnel
Metrics related to IPSEC tunnels. Each tunnel provides its own set of the following metrics.
This scope has no labels.
Metrics:
| Metric | Dimensions | Unit |
|:------|:----------|:----|
| libreswan.net | in, out | kilobits/s |
| libreswan.uptime | uptime | seconds |
## Alerts
There are no alerts configured by default for this integration.
## Setup
### Prerequisites
#### Install charts.d plugin
If [using our official native DEB/RPM packages](https://github.com/netdata/netdata/blob/master/packaging/installer/UPDATE.md#determine-which-installation-method-you-used), make sure `netdata-plugin-chartsd` is installed.
#### Permissions to execute `ipsec`
The plugin executes 2 commands to collect all the information it needs:
```sh
ipsec whack --status
ipsec whack --trafficstatus
```
The first command is used to extract the currently established tunnels, their IDs and their names.
The second command is used to extract the current uptime and traffic.
Most probably user `netdata` will not be able to query libreswan, so the `ipsec` commands will be denied.
The plugin attempts to run `ipsec` as `sudo ipsec ...`, to get access to libreswan statistics.
To allow user `netdata` execute `sudo ipsec ...`, create the file `/etc/sudoers.d/netdata` with this content:
```
netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --status
netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --trafficstatus
```
Make sure the path `/sbin/ipsec` matches your setup (execute `which ipsec` to find the right path).
### Configuration
#### File
The configuration file name for this integration is `charts.d/libreswan.conf`.
You can edit the configuration file using the `edit-config` script from the
Netdata [config directory](https://github.com/netdata/netdata/blob/master/docs/configure/nodes.md#the-netdata-config-directory).
```bash
cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config charts.d/libreswan.conf
```
#### Options
The config file is sourced by the charts.d plugin. It's a standard bash file.
The following collapsed table contains all the options that can be configured for the libreswan collector.
<details><summary>Config options</summary>
| Name | Description | Default | Required |
|:----|:-----------|:-------|:--------:|
| libreswan_update_every | The data collection frequency. If unset, will inherit the netdata update frequency. | 1 | no |
| libreswan_priority | The charts priority on the dashboard | 90000 | no |
| libreswan_retries | The number of retries to do in case of failure before disabling the collector. | 10 | no |
| libreswan_sudo | Whether to run `ipsec` with `sudo` or not. | 1 | no |
</details>
#### Examples
##### Run `ipsec` without sudo
Run the `ipsec` utility without sudo
```yaml
# the data collection frequency
# if unset, will inherit the netdata update frequency
#libreswan_update_every=1
# the charts priority on the dashboard
#libreswan_priority=90000
# the number of retries to do in case of failure
# before disabling the module
#libreswan_retries=10
# set to 1, to run ipsec with sudo (the default)
# set to 0, to run ipsec without sudo
libreswan_sudo=0
```
## Troubleshooting
### Debug Mode
To troubleshoot issues with the `libreswan` collector, run the `charts.d.plugin` with the debug option enabled. The output
should give you clues as to why the collector isn't working.
- Navigate to the `plugins.d` directory, usually at `/usr/libexec/netdata/plugins.d/`. If that's not the case on
your system, open `netdata.conf` and look for the `plugins` setting under `[directories]`.
```bash
cd /usr/libexec/netdata/plugins.d/
```
- Switch to the `netdata` user.
```bash
sudo -u netdata -s
```
- Run the `charts.d.plugin` to debug the collector:
```bash
./charts.d.plugin debug 1 libreswan
```
|
