Merging upstream version 1.29.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

6 files changed, 198 insertions, 112 deletions

diff --git a/collectors/python.d.plugin/adaptec_raid/README.md b/collectors/python.d.plugin/adaptec_raid/README.md
index d35ccecbc..b14e8f9ba 100644
--- a/collectors/python.d.plugin/adaptec_raid/README.md
+++ b/collectors/python.d.plugin/adaptec_raid/README.md
@@ -6,53 +6,73 @@ sidebar_label: "Adaptec RAID"
 
 # Adaptec RAID controller monitoring with Netdata
 
-Collects logical and physical devices metrics.
+Collects logical and physical devices metrics using `arcconf` command-line utility.
+
+Executed commands:
+
+- `sudo -n arcconf GETCONFIG 1 LD`
+- `sudo -n arcconf GETCONFIG 1 PD`
 
 ## Requirements
 
-The module uses `arcconf`, which can only be executed by root.  It uses
-`sudo` and assumes that it is configured such that the `netdata` user can
-execute `arcconf` as root without password.
+The module uses `arcconf`, which can only be executed by `root`. It uses
+`sudo` and assumes that it is configured such that the `netdata` user can execute `arcconf` as root without a password.
 
-Add to `sudoers`:
+-  Add to your `/etc/sudoers` file:
 
-```
+`which arcconf` shows the full path to the binary.
+
+```bash
 netdata ALL=(root)       NOPASSWD: /path/to/arcconf
 ```
 
-To grab stats it executes:
+- Reset Netdata's systemd
+  unit [CapabilityBoundingSet](https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Capabilities) (Linux
+  distributions with systemd)
 
--   `sudo -n arcconf GETCONFIG 1 LD`
--   `sudo -n arcconf GETCONFIG 1 PD`
+The default CapabilityBoundingSet doesn't allow using `sudo`, and is quite strict in general. Resetting is not optimal, but a next-best solution given the inability to execute `arcconf` using `sudo`.
 
-It produces:
 
-1.  **Logical Device Status**
+As the `root` user, do the following:
 
-2.  **Physical Device State**
+```cmd
+mkdir /etc/systemd/system/netdata.service.d
+echo -e '[Service]\nCapabilityBoundingSet=~' | tee /etc/systemd/system/netdata.service.d/unset-capability-bounding-set.conf
+systemctl daemon-reload
+systemctl restart netdata.service
+```
 
-3.  **Physical Device S.M.A.R.T warnings**
+## Charts
 
-4.  **Physical Device Temperature**
+- Logical Device Status
+- Physical Device State
+- Physical Device S.M.A.R.T warnings
+- Physical Device Temperature
 
-## Configuration
+## Enable the collector
 
-**adaptec_raid** is disabled by default. Should be explicitly enabled in `python.d.conf`.
+The `adaptec_raid` collector is disabled by default. To enable it, use `edit-config` from the
+Netdata [config directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`, to edit the `python.d.conf`
+file.
 
-```yaml
-adaptec_raid: yes
+```bash
+cd /etc/netdata   # Replace this path with your Netdata config directory, if different
+sudo ./edit-config python.d.conf
 ```
 
-Edit the `python.d/adaptec_raid.conf` configuration file using `edit-config` from the Netdata [config
-directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
+Change the value of the `adaptec_raid` setting to `yes`. Save the file and restart the Netdata Agent
+with `sudo systemctl restart netdata`, or the appropriate method for your system.
+
+## Configuration
+
+Edit the `python.d/adaptec_raid.conf` configuration file using `edit-config` from the
+Netdata [config directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
 
 ```bash
 cd /etc/netdata   # Replace this path with your Netdata config directory, if different
 sudo ./edit-config python.d/adaptec_raid.conf
 ```
 
-
-
 ![image](https://user-images.githubusercontent.com/22274335/47278133-6d306680-d601-11e8-87c2-cc9c0f42d686.png)
 
 ---
diff --git a/collectors/python.d.plugin/elasticsearch/README.md b/collectors/python.d.plugin/elasticsearch/README.md
index d8d7581bc..cf1834c5a 100644
--- a/collectors/python.d.plugin/elasticsearch/README.md
+++ b/collectors/python.d.plugin/elasticsearch/README.md
@@ -80,6 +80,7 @@ Sample:
 local:
   host               : 'ipaddress'    # Elasticsearch server ip address or hostname.
   port               : 'port'         # Port on which elasticsearch listens.
+  scheme             : 'http'         # URL scheme. Use 'https' if your elasticsearch uses TLS.
   node_status        :  yes/no        # Get metrics from "/_nodes/_local/stats". Enabled by default.
   cluster_health     :  yes/no        # Get metrics from "/_cluster/health". Enabled by default.
   cluster_stats      :  yes/no        # Get metrics from "'/_cluster/stats". Enabled by default.
diff --git a/collectors/python.d.plugin/hpssa/README.md b/collectors/python.d.plugin/hpssa/README.md
index 2079ff2ad..af8c4378e 100644
--- a/collectors/python.d.plugin/hpssa/README.md
+++ b/collectors/python.d.plugin/hpssa/README.md
@@ -8,44 +8,64 @@ sidebar_label: "HP Smart Storage Arrays"
 
 Monitors controller, cache module, logical and physical drive state and temperature using `ssacli` tool.
 
+Executed commands:
+
+- `sudo -n ssacli ctrl all show config detail`
+
 ## Requirements:
 
 This module uses `ssacli`, which can only be executed by root. It uses
-`sudo` and assumes that it is configured such that the `netdata` user can
-execute `ssacli` as root without password.
+`sudo` and assumes that it is configured such that the `netdata` user can execute `ssacli` as root without a password.
 
-Add to `sudoers`:
+- Add to your `/etc/sudoers` file:
 
-```
+`which ssacli` shows the full path to the binary.
+
+```bash
 netdata ALL=(root)       NOPASSWD: /path/to/ssacli
 ```
 
-To collect metrics, the module executes: `sudo -n ssacli ctrl all show config detail`
+- Reset Netdata's systemd
+  unit [CapabilityBoundingSet](https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Capabilities) (Linux
+  distributions with systemd)
+
+The default CapabilityBoundingSet doesn't allow using `sudo`, and is quite strict in general. Resetting is not optimal, but a next-best solution given the inability to execute `ssacli` using `sudo`.
+
+As the `root` user, do the following:
+
+```cmd
+mkdir /etc/systemd/system/netdata.service.d
+echo -e '[Service]\nCapabilityBoundingSet=~' | tee /etc/systemd/system/netdata.service.d/unset-capability-bounding-set.conf
+systemctl daemon-reload
+systemctl restart netdata.service
+```
 
-This module produces:
+## Charts
 
-1.  Controller state and temperature
-2.  Cache module state and temperature
-3.  Logical drive state
-4.  Physical drive state and temperature
+- Controller status
+- Controller temperature
+- Logical drive status
+- Physical drive status
+- Physical drive temperature
 
 ## Enable the collector
 
-The `hpssa` collector is disabled by default. To enable it, use `edit-config` from the Netdata [config
-directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`, to edit the `python.d.conf` file.
+The `hpssa` collector is disabled by default. To enable it, use `edit-config` from the
+Netdata [config directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`, to edit the `python.d.conf`
+file.
 
 ```bash
 cd /etc/netdata   # Replace this path with your Netdata config directory, if different
 sudo ./edit-config python.d.conf
 ```
 
-Change the value of the `hpssa` setting to `yes`. Save the file and restart the Netdata Agent with `sudo systemctl
-restart netdata`, or the appropriate method for your system, to finish enabling the `hpssa` collector.
+Change the value of the `hpssa` setting to `yes`. Save the file and restart the Netdata Agent
+with `sudo systemctl restart netdata`, or the appropriate method for your system.
 
 ## Configuration
 
-Edit the `python.d/hpssa.conf` configuration file using `edit-config` from the Netdata [config
-directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
+Edit the `python.d/hpssa.conf` configuration file using `edit-config` from the
+Netdata [config directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
 
 ```bash
 cd /etc/netdata   # Replace this path with your Netdata config directory, if different
diff --git a/collectors/python.d.plugin/megacli/README.md b/collectors/python.d.plugin/megacli/README.md
index 400a45973..4fb7eb1c2 100644
--- a/collectors/python.d.plugin/megacli/README.md
+++ b/collectors/python.d.plugin/megacli/README.md
@@ -6,50 +6,68 @@ sidebar_label: "MegaRAID controllers"
 
 # MegaRAID controller monitoring with Netdata
 
-Collects adapter, physical drives and battery stats.
+Collects adapter, physical drives and battery stats using `megacli` command-line tool.
+
+Executed commands:
+
+- `sudo -n megacli -LDPDInfo -aAll`
+- `sudo -n megacli -AdpBbuCmd -a0`
 
 ## Requirements
 
-Uses the `megacli` program, which can only be executed by root.  It uses
-`sudo` and assumes that it is configured such that the `netdata` user can
-execute `megacli` as root without password.
+The module uses `megacli`, which can only be executed by `root`. It uses
+`sudo` and assumes that it is configured such that the `netdata` user can execute `megacli` as root without a password.
 
-Add to `sudoers`:
+- Add to your `/etc/sudoers` file:
 
-```
+`which megacli` shows the full path to the binary.
+
+```bash
 netdata ALL=(root)       NOPASSWD: /path/to/megacli
 ```
 
+- Reset Netdata's systemd
+  unit [CapabilityBoundingSet](https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Capabilities) (Linux
+  distributions with systemd)
 
-To grab stats it executes:
+The default CapabilityBoundingSet doesn't allow using `sudo`, and is quite strict in general. Resetting is not optimal, but a next-best solution given the inability to execute `megacli` using `sudo`.
 
--   `sudo -n megacli -LDPDInfo -aAll`
--   `sudo -n megacli -AdpBbuCmd -a0`
 
-It produces:
+As the `root` user, do the following:
 
-1.  **Adapter State**
+```cmd
+mkdir /etc/systemd/system/netdata.service.d
+echo -e '[Service]\nCapabilityBoundingSet=~' | tee /etc/systemd/system/netdata.service.d/unset-capability-bounding-set.conf
+systemctl daemon-reload
+systemctl restart netdata.service
+```
 
-2.  **Physical Drives Media Errors**
+## Charts
 
-3.  **Physical Drives Predictive Failures**
+- Adapter State
+- Physical Drives Media Errors
+- Physical Drives Predictive Failures
+- Battery Relative State of Charge
+- Battery Cycle Count
 
-4.  **Battery Relative State of Charge**
+## Enable the collector
 
-5.  **Battery Cycle Count**
+The `megacli` collector is disabled by default. To enable it, use `edit-config` from the
+Netdata [config directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`, to edit the `python.d.conf`
+file.
 
+```bash
+cd /etc/netdata   # Replace this path with your Netdata config directory, if different
+sudo ./edit-config python.d.conf
+```
 
+Change the value of the `megacli` setting to `yes`. Save the file and restart the Netdata Agent
+with `sudo systemctl restart netdata`, or the appropriate method for your system.
 
 ## Configuration
 
-**megacli** is disabled by default. Should be explicitly enabled in `python.d.conf`.
-
-```yaml
-megacli: yes
-```
-
-Edit the `python.d/megacli.conf` configuration file using `edit-config` from the Netdata [config
-directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
+Edit the `python.d/megacli.conf` configuration file using `edit-config` from the
+Netdata [config directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
 
 ```bash
 cd /etc/netdata   # Replace this path with your Netdata config directory, if different
diff --git a/collectors/python.d.plugin/python_modules/bases/FrameworkServices/SocketService.py b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/SocketService.py
index bef3792da..d6c755058 100644
--- a/collectors/python.d.plugin/python_modules/bases/FrameworkServices/SocketService.py
+++ b/collectors/python.d.plugin/python_modules/bases/FrameworkServices/SocketService.py
@@ -247,7 +247,7 @@ class SocketService(SimpleService):
             if self._check_raw_data(data):
                 break
 
-        self.debug(u'final response: {0}'.format(data))
+        self.debug(u'final response: {0}'.format(data if not raw else u'binary data'))
         return data
 
     def _get_raw_data(self, raw=False, request=None):
diff --git a/collectors/python.d.plugin/samba/README.md b/collectors/python.d.plugin/samba/README.md
index ed26d2871..a5126510f 100644
--- a/collectors/python.d.plugin/samba/README.md
+++ b/collectors/python.d.plugin/samba/README.md
@@ -6,83 +6,110 @@ sidebar_label: "Samba"
 
 # Samba monitoring with Netdata
 
-Monitors the performance metrics of Samba file sharing.
+Monitors the performance metrics of Samba file sharing using `smbstatus` command-line tool.
+
+Executed commands:
+
+- `sudo -n smbstatus -P`
 
 ## Requirements
 
--   `smbstatus` program
--   `sudo` program
--   `smbd` must be compiled with profiling enabled
--   `smbd` must be started either with the `-P 1` option or inside `smb.conf` using `smbd profiling level`
--   `netdata` user needs to be able to sudo the `smbstatus` program without password
+- `smbstatus` program
+- `sudo` program
+- `smbd` must be compiled with profiling enabled
+- `smbd` must be started either with the `-P 1` option or inside `smb.conf` using `smbd profiling level`
 
-It produces the following charts:
+The module uses `smbstatus`, which can only be executed by `root`. It uses
+`sudo` and assumes that it is configured such that the `netdata` user can execute `smbstatus` as root without a
+password.
 
-1.  **Syscall R/Ws** in kilobytes/s
+- Add to your `/etc/sudoers` file:
 
-    -   sendfile
-    -   recvfile
+`which smbstatus` shows the full path to the binary.
 
-2.  **Smb2 R/Ws** in kilobytes/s
+```bash
+netdata ALL=(root)       NOPASSWD: /path/to/smbstatus
+```
 
-    -   readout
-    -   writein
-    -   readin
-    -   writeout
+- Reset Netdata's systemd
+  unit [CapabilityBoundingSet](https://www.freedesktop.org/software/systemd/man/systemd.exec.html#Capabilities) (Linux
+  distributions with systemd)
 
-3.  **Smb2 Create/Close** in operations/s
+The default CapabilityBoundingSet doesn't allow using `sudo`, and is quite strict in general. Resetting is not optimal, but a next-best solution given the inability to execute `smbstatus` using `sudo`.
 
-    -   create
-    -   close
 
-4.  **Smb2 Info** in operations/s
+As the `root` user, do the following:
 
-    -   getinfo
-    -   setinfo
+```cmd
+mkdir /etc/systemd/system/netdata.service.d
+echo -e '[Service]\nCapabilityBoundingSet=~' | tee /etc/systemd/system/netdata.service.d/unset-capability-bounding-set.conf
+systemctl daemon-reload
+systemctl restart netdata.service
+```
 
-5.  **Smb2 Find** in operations/s
+## Charts
 
-    -   find
+1. **Syscall R/Ws** in kilobytes/s
 
-6.  **Smb2 Notify** in operations/s
+    - sendfile
+    - recvfile
 
-    -   notify
+2. **Smb2 R/Ws** in kilobytes/s
 
-7.  **Smb2 Lesser Ops** as counters
+    - readout
+    - writein
+    - readin
+    - writeout
 
-    -   tcon
-    -   negprot
-    -   tdis
-    -   cancel
-    -   logoff
-    -   flush
-    -   lock
-    -   keepalive
-    -   break
-    -   sessetup
+3. **Smb2 Create/Close** in operations/s
 
-## prerequisite
+    - create
+    - close
 
-This module uses `smbstatus` which can only be executed by root.  It uses
-`sudo` and assumes that it is configured such that the `netdata` user can
-execute `smbstatus` as root without password.
+4. **Smb2 Info** in operations/s
 
-Add to `sudoers`:
+    - getinfo
+    - setinfo
 
-```
-netdata ALL=(root)       NOPASSWD: /path/to/smbstatus
-```
+5. **Smb2 Find** in operations/s
 
-## Configuration
+    - find
 
-**samba** is disabled by default. Should be explicitly enabled in `python.d.conf`.
+6. **Smb2 Notify** in operations/s
 
-```yaml
-samba: yes
+    - notify
+
+7. **Smb2 Lesser Ops** as counters
+
+    - tcon
+    - negprot
+    - tdis
+    - cancel
+    - logoff
+    - flush
+    - lock
+    - keepalive
+    - break
+    - sessetup
+
+## Enable the collector
+
+The `samba` collector is disabled by default. To enable it, use `edit-config` from the
+Netdata [config directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`, to edit the `python.d.conf`
+file.
+
+```bash
+cd /etc/netdata   # Replace this path with your Netdata config directory, if different
+sudo ./edit-config python.d.conf
 ```
 
-Edit the `python.d/samba.conf` configuration file using `edit-config` from the Netdata [config
-directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
+Change the value of the `samba` setting to `yes`. Save the file and restart the Netdata Agent
+with `sudo systemctl restart netdata`, or the appropriate method for your system.
+
+## Configuration
+
+Edit the `python.d/samba.conf` configuration file using `edit-config` from the
+Netdata [config directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
 
 ```bash
 cd /etc/netdata   # Replace this path with your Netdata config directory, if different