Update RSyslog HLD with new functionality #1218

iavraham · 2023-01-16T08:39:22Z

Adding the following functionality:

Configure remote syslog servers: protocol, filter, trap severity level
Update global syslog configuration: trap severity kevel, message format

these are the implementation PRs for community review:

Repo	PR title	State
sonic-swss-common	[rsyslog]add syslog global config to db
sonic-host-services	[rsyslog]Add remote syslog configuration
sonic-buildimage	[rsyslog]Add remote syslog configuration
sonic-utilities	[syslog] Adjust runningconfiguration syslog command

linux-foundation-easycla · 2023-01-16T08:39:25Z

The committers listed above are authorized under a signed CLA.

✅ login: iavraham (ec526f5, ea826d9f9937173f6698b2df29356f614bd0a0c0)

fastiuk · 2023-01-17T14:15:38Z

doc/syslog/syslog-design.md

+# 1. SONiC Syslog Source IP
+
+## 1.1. High Level Design document
+
+## 1.2. Table of contents
+
+- [1. SONiC Syslog Source IP](#1-sonic-syslog-source-ip)
+  - [1.1. High Level Design document](#11-high-level-design-document)
+  - [1.2. Table of contents](#12-table-of-contents)


We need to get rid of section numbers here and remove them from table of content.
You can use "" directive. See here

venkatmahalingam · 2023-01-17T16:37:17Z

doc/syslog/syslog-design.md

@@ -503,12 +758,14 @@ module sonic-syslog {

                leaf server_address {
                    description "Syslog server IP address";


Suggest to update the description.
The server address represents either an IP address or a DNS domain name.

venkatmahalingam · 2023-01-17T16:38:49Z

doc/syslog/syslog-design.md

+
+                leaf format {
+                    description "Log format";
+                    type log-format;


Can we add a default 'standard' field?

zhangyanzhao · 2023-01-17T17:07:33Z

@dharmaraj-gurusamy wants to be the reviewer.

dharmaraj-gurusamy · 2023-01-20T05:50:09Z

doc/syslog/syslog-design.md

-| 0.1 | 18/04/2022 | Nazarii Hnydyn | Initial version |
-
-## About this manual
+# 1. SONiC Syslog Source IP


The original document has this as title & Introduction is marked as section 1. All section numbers seems incremented. Please correct the document headers.

dharmaraj-gurusamy · 2023-01-20T05:55:06Z

doc/syslog/syslog-design.md

+| Rev | Date       | Author         | Description           |
+|:---:|:----------:|:--------------:|:----------------------|
+| 0.1 | 18/04/2022 | Nazarii Hnydyn | Initial version       |
+| 0.2 | 08/01/2023 | Ido Avraham    | extend capabilities   |


Please add short note about the extended capabilities.

added detailed description

dharmaraj-gurusamy · 2023-01-20T06:06:40Z

doc/syslog/syslog-design.md

+| Parameter          | Default  | Description                                                                   |
+|:-------------------|:---------|:------------------------------------------------------------------------------|
+| format             | standard | template format                                                               |
+| trap               | notice   | messages with severity equal or grater then this severity will be forwarded   |


severity will be a better name as trap may confuse with SNMP terminology. Please keep uniform name for both global & server specific configuration parameters.

we defined this name in our internal usage so we would prefer to leave it like that.
is it acceptable by you?

The man page (https://www.rsyslog.com/doc/v8-stable/configuration/filters.html) states priority / severity term. Hence, I would still recommend to rename either as severity / priority for better conveying the purpose.

doc/syslog/syslog-design.md

dharmaraj-gurusamy · 2023-01-20T06:11:33Z

doc/syslog/syslog-design.md

+| trap                  | priority | SYSLOG_CONFIG\|GLOBAL\|trap                |
+| welf_firewall_name    | trap     | SYSLOG_CONFIG\|GLOBAL\|welf_firewall_name  |
+
+* trap will set rules trap severity if not specified in the rule


Please share more details on this statement, preferably with an example.

dharmaraj-gurusamy · 2023-01-20T06:28:41Z

doc/syslog/syslog-design.md

@@ -444,7 +657,7 @@ config syslog add '2.2.2.2' \
 config syslog del '2.2.2.2'
 ```

-#### 2.6.2.2 Show command group
+#### 3.6.2.2. Show command group

 **The following command shows syslog server configuration:**


The extended parameters shall be displayed in show command output also for consistency.

dharmaraj-gurusamy · 2023-01-20T06:29:41Z

doc/syslog/syslog-design.md

+                    or (/mvrf:sonic-mgmt_vrf/mvrf:MGMT_VRF_CONFIG/mvrf:vrf_global/mvrf:mgmtVrfEnabled = 'true')";
+                }
+
+                leaf filter {


filter_type will be the better name.

will change

dharmaraj-gurusamy · 2023-01-20T06:30:06Z

doc/syslog/syslog-design.md

+                    type rsyslog-protocol;
+                }
+
+                leaf trap {


severity will be the better name.

answered above

dharmaraj-gurusamy · 2023-01-20T06:30:45Z

doc/syslog/syslog-design.md

+                }
+
+                leaf trap {
+                    type rsyslog-severity;


Please add the default value.

dharmaraj-gurusamy · 2023-01-20T06:34:25Z

doc/syslog/syslog-design.md

+| device        | none     | Bind socket to given device (e.g., eth0/vrf0)                                             |
+| ipfreebind    | 2        | Manages the IP_FREEBIND option on the UDP socket                                          |
+| filter        | none     | compares the log against the provided regular expression                                  |
+| priority      | notice   | logs with specified priority and higher will be forwarded                                 |


Will the default values be added in redis during upgrade scenarios (db_migrator script)? If not, we might end up in inconsistency after upgrade?

if the keys are empty we will use the global default value in the template

doc/syslog/syslog-design.md

dharmaraj-gurusamy · 2023-02-01T04:57:41Z

doc/syslog/syslog-design.md

+| Parameter          | Default  | Description                                                                   |
+|:-------------------|:---------|:------------------------------------------------------------------------------|
+| format             | standard | template format                                                               |
+| trap               | notice   | messages with severity equal or grater then this severity will be forwarded   |


The man page (https://www.rsyslog.com/doc/v8-stable/configuration/filters.html) states priority / severity term. Hence, I would still recommend to rename either as severity / priority for better conveying the purpose.

iavraham · 2023-04-20T07:29:35Z

to merge the submodules, we first need to merge sonic-swss-common and then we can pass CI tests

SavchukRomanLv · 2023-05-11T12:54:33Z

@iavraham any time line when feature can be approved and merged? Thank you!

fastiuk · 2023-05-11T13:09:46Z

@iavraham any time line when feature can be approved and merged? Thank you!

We answered/closed all comments in this PR. Now we are waiting for maintainers to approve and merge it.

wen587 · 2023-05-15T10:11:39Z

Will review before 5/25

wen587 · 2023-05-22T02:16:12Z

doc/syslog/syslog-design.md


 Linux kernel decides which source IP to use within the default VRF.

 **Example:**
 ```
-*.* action(type="omfwd" target="2.2.2.2" protocol="udp")
+*.notice action(type="omfwd" target="2.2.2.2" protocol="udp")


Current 'show runningconfiguration syslog' is matching lines starting with '.'.
Will it break the show cli function? https://github.com/sonic-net/sonic-utilities/blob/master/show/main.py#L1687

Will it break the show cli function?

It will. I fixed it here: sonic-net/sonic-utilities#2843

iavraham changed the title ~~rsyslog hld update~~ Update RSyslog HLD with new functionality Jan 16, 2023

fastiuk mentioned this pull request Jan 16, 2023

rsyslog hld update iavraham/SONiC#1

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fastiuk reviewed Jan 17, 2023

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zhangyanzhao requested a review from lguohan January 17, 2023 17:04

dharmaraj-gurusamy suggested changes Jan 20, 2023

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fastiuk assigned fastiuk and iavraham Jan 24, 2023

dharmaraj-gurusamy reviewed Feb 1, 2023

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dharmaraj-gurusamy approved these changes Feb 2, 2023

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qiluo-msft requested a review from wen587 May 13, 2023 00:47

wen587 reviewed May 22, 2023

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fastiuk force-pushed the rsyslog_hld_update branch from 3b29864 to cd54a88 Compare May 23, 2023 20:00

fastiuk requested a review from wen587 May 24, 2023 07:21

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iavraham added 4 commits May 29, 2023 00:50

rsyslog hld update

3e50a3e

minor fixes after CR

2d70b56

Update HLD after review

bd7e768

change trap to severity

f96a9f1

fastiuk force-pushed the rsyslog_hld_update branch from e632798 to f96a9f1 Compare May 28, 2023 21:50

venkatmahalingam approved these changes May 30, 2023

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qiluo-msft merged commit 4efe273 into sonic-net:master May 30, 2023

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Update RSyslog HLD with new functionality #1218

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		@@ -503,12 +758,14 @@ module sonic-syslog {

		leaf server_address {
		description "Syslog server IP address";

Update RSyslog HLD with new functionality #1218

Update RSyslog HLD with new functionality #1218

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