Commit Graph

355 Commits

Author SHA1 Message Date
Renuka Manavalan
99958304c1 [container_checker] Use Feature table to get running containers (#7474)
Why I did it
Finding running containers through "docker ps" breaks when kubernetes deploys container, as the names are mangled.

How I did it
The data is is available from FEATURE table, which takes care of kubernetes deployment too.

How to verify it
Deploy a feature via kubernetes and don't expect error from container_check.
2021-05-10 15:59:57 -07:00
Stepan Blyshchak
ae574ab000 [systemd] disable default systemd udev rules for interfaces (#7369)
Fix #7364

99-default.link - was always in SONiC, but previous systemd (<247) had an issue and it did not work due to issue systemd/systemd#3374. Now systemd 247 works.

However, such policy overrides teamd provided mac address which causes teamd netdev to use a random mac
address. Therefore, needs to be disabled.

Signed-off-by: Stepan Blyschak <stepanb@nvidia.com>
2021-05-01 19:43:41 -07:00
xumia
1b05982727 Support readonly vtysh for sudoers (#7383)
Why I did it
Support readonly version of the command vtysh

How I did it
Check if the command starting with "show", and verify only contains single command in script.
2021-04-29 10:08:55 -07:00
Kuanyu Chen
66dedf38c2 [config-setup]: Fix a bug in checking if updategraph is enabled (#7093)
Encounter error during "config-setup boot" if the updategraph is enabled.

How I did it
Correct the code inside the config-setup script.
Remove the space between the assignment operator.

How to verify it
Remove the /etc/sonic/config_db.json and reboot the device.
Originally, it will return following error after boot up.
rv: command not found
After modification, it can correctly parse the status of updategraph without error.
2021-04-21 13:58:03 -07:00
yozhao101
c63b59698c [container_checker] Exclude the 'always_disabled' container from expected running container list (#7217)
Signed-off-by: Yong Zhao yozhao@microsoft.com

Why I did it
Since we introduced a new value always_disabled for the state field in FEATURE table, the expected running container list
should exclude the always_diabled containers. This bug was found by nightly test and posted at here: issue. This PR fixes #7210.

How I did it
I added a logic condition to decide whether the value of state field of a container was always_disabled or not.

How to verify it
I verified this on the device str-dx010-acs-1.

Which release branch to backport (provide reason below if selected)
 201811
 201911
 202006
[ x] 202012
2021-04-02 11:52:35 -07:00
arlakshm
cc6e521b40 [baseimage] add ipintutil in sudoer file (#6845)
show ip interfaces is enhanced recently to support multi ASIC platforms in this PR- https://github.com/Azure/sonic-utilities/pull/1396 .
The ipintutil script as to run as sudo user, to get the ip interface from each namespace.
Add this script to the sudoer file so that show ip interface command is available for user with read-only permissions

Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan <arlakshm@microsoft.com>
2021-03-13 23:29:24 -08:00
Sujin Kang
15aed52ef2 [pcie.yaml] Move pcie configuration file path to platform directory (#6475)
- Why I did it
The pcie configuration file location is under plugin directory not under platform directory.
#6437

- How I did it

Move all pcie.yaml configuration file from plugin to platform directory.
Remove unnecessary timer to start pcie-check.service
Move pcie-check.service to sonic-host-services
- How to verify it
Verify on the device
2021-03-04 21:23:05 +00:00
Stepan Blyshchak
7fb5a72d23 [services] introduce sonic.target (#5705)
- Why I did it
Group all SONiC services together and able to manage them together. Will be used in config reload command as much simpler and generic way to restart services.

- How I did it
Add services to sonic.target

- How to verify it
Together with Azure/sonic-utilities#1199
config reload -y

Signed-off-by: Stepan Blyshchak <stepanb@nvidia.com>
2021-03-04 21:23:05 +00:00
arlakshm
d7be5a021a [Multi Asic] support of swss.rec and sairedis.rec for multi asic (#6310)
Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan arlakshm@microsoft.com

- Why I did it
This PR has the changes to support having different swss.rec and sairedis.rec for each asic.
The logrotate script is updated as well

- How I did it

Update the orchagent.sh script to use the logfile name options in these PRs(Azure/sonic-swss#1546 and Azure/sonic-sairedis#747)
In multi asic platforms the record files will be different for each asic, with the format swss.asic{x}.rec and sairedis.asic{x}.rec

Update the logrotate script for multiasic platform .
2021-02-23 23:56:01 +00:00
Joe LeVeque
57a6fb9f39 [pcie-check] Update underlying pcieutil command and add to sudoers file (#6682)
- Why I did it

As of Azure/sonic-utilities#1297, subcommands of pcieutil have changed to remove the redundant pcie- prefix. This PR adapts calling applications (pcie-check) to the new syntax.

Resolves #6676

- How I did it

Remove pcie- prefix from pcieutil subcommands in calling applications
Also add pcieutil * to sudoers file, as pcieutil requires elevated permissions
2021-02-05 15:47:58 -08:00
arlakshm
24d785a64d [baseimage]: add docker ps to the sudoer file (#6604)
fixes Azure/sonic-utilities#1389

With the recent changes in sudoer files. The  show commands fails for the read-only users. 
The problem here is the 'docker ps' is failing in the function [get_routing_stack()](8a1109ed30/show/main.py (L54)) therefore all the CLI commands are failing.

Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan <arlakshm@microsoft.com>
2021-02-03 10:39:00 -08:00
arlakshm
197f75a246 [multi asic] add ip netns identify command to sudoer (#6591)
Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan <arlakshm@microsoft.com>

- Why I did it
The command sudo ip netns identify <pid> is used in function get_current_namespace
to check in the cli command is running in host context or within a namespace.

This function is used for every CLI command and command sudo ip netns identify <pid> needs to be added in sudoer files to allow users with RO access to run show cli commands

This problem is not there on single asic platforms.

- How I did it
Add ip netns identify [0-9]* to sudoers file.
2021-02-03 10:38:24 -08:00
Qi Luo
c5b7370a8f [baseimage]: Cleanup sudoers file (#6518) 2021-01-21 08:41:23 -08:00
Ying Xie
a1951ea198 [warm boot finalizer] only wait for enabled components to reconcile (#6454)
* [warm boot finalizer] only wait for enabled components to reconcile

Define the component with its associated service. Only wait for components that have associated service enabled to reconcile during warm reboot.

Signed-off-by: Ying Xie <ying.xie@microsoft.com>
2021-01-15 08:20:28 -08:00
yozhao101
bfec282a82 [Monit] Monitoring the running status of containers. (#6251)
**- Why I did it**
This PR aims to monitor the running status of each container. Currently the auto-restart feature was enabled. If a critical process exited unexpected, the container will be restarted. If the container was restarted 3 times during 20 minutes, then it will not run anymore unless we cleared the flag using the command `sudo systemctl reset-failed <container_name>` manually. 

**- How I did it**
We will employ Monit to monitor a script. This script will generate the expected running container list and compare it with the current running containers. If there are containers which were expected to run but were not running, then an alerting message will be written into syslog.

**- How to verify it**
I tested this feature on a lab device `str-a7050-acs-3` which has single ASIC and `str2-n3164-acs-3` which has a Multi-ASIC. First I manually stopped a container by running the command `sudo systemctl stop <container_name>`, then I checked whether there was an alerting message in the syslog.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2021-01-09 08:27:53 -08:00
Renuka Manavalan
1bdefd16fa Take a copy of existing TACACS credentials and restore it during upgrade (#6285)
In scenario where upgrade gets config from minigraph, it could miss tacacs credentials as they are not in minigraph. Hence restore explicitly upon load-minigraph, if present.

- Why I did it
Upon boot, when config migration is required, the switch could load config from minigraph. The config-load from minigraph would wipe off TACACS key and disable login via TACACS, which would disable all remote user access. This change, would re-configure the TACACS if there is a saved copy available.

- How I did it
When config is loaded from minigraph, look for a TACACS credentials back up (tacacs.json) under /etc/sonic/old_config. If present, load the credentials into running config, before config-save is called.

- How to verify it
Remove /etc/sonic/config_db.json and do an image update. Upon reboot, w/o this change, you would not be able ssh in as remote user. You may login as admin and check out, "show tacacs" & "show aaa" to verify that tacacs-key is missing and login is not enabled for tacacs.
With this change applied, remove /etc/sonic/config_db.json, but save tacacs & aaa credentials as tacacs.json in /etc/sonic/. Upon reboot, you should see remote user access possible.
2021-01-09 08:27:41 -08:00
Akhilesh Samineni
46c2bf0ed4 After first bootup, the FEATURE table is not present in CONFIG_DB (#5911)
Fix the After first bootup(onie-install), the FEATURE table is not present in CONFIG_DB. 
Fix is done by calling config reload.
2021-01-06 06:19:21 -08:00
Prabhu Sreenivasan
df2a4ded98
[ntp]: Source interface support for NTP (#6033)
Added source interface support for NTP.
Also made NTP start on Mgmt-VRF by default when configured.

**- How I did it**
1) Updated hostcfg to listen to global config NTP and NTP_SERVER tables and restart ntp when ever the configuration changes. NTP table includes source interface configuration.
2) The ntp script updated to by default start on Mgmt-VFT when configured.

Signed-off-by: Prabhu Sreenivasan <prabhu.sreenivasan@broadcom>
2020-12-21 05:34:13 -08:00
abdosi
0755f29fe7
Telemetry Certificate Copy Across Image Upgrade. (#6252)
To copy telemetry certificate during image upgrade from previous image to new image
2020-12-19 08:24:03 -08:00
arheneus@marvell.com
e88c7d11ca
[ntp][apparmor] Allow apparmor read permission for ntpd under rw mount path of rootfs (#6040)
Certain platform specific packages sonic-platform-xyz, installs files onto rootfs, which would be placed on read-write mount path on /host/image-name/rw/...
when ntpd starts it tries to do read access on /usr/bin /usr/sbin/ /usr/local/bin , which inturn links further to the read-write mount path also.
Where ntpd would get below Apparmor Warning message

LOG:-
audit: type=1400 audit(1606226503.240:21): apparmor="DENIED" operation="open" profile="/usr/sbin/ntpd" name="/image-HEAD-dirty-20201111.173951/rw/usr/local/bin/" pid=3733 comm="ntpd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
audit: type=1400 audit(1606226503.240:22): apparmor="DENIED" operation="open" profile="/usr/sbin/ntpd" name="/image-HEAD-dirty-20201111.173951/rw/usr/sbin/" pid=3733 comm="ntpd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0
audit: type=1400 audit(1606226503.240:23): apparmor="DENIED" operation="open" profile="/usr/sbin/ntpd" name="/image-HEAD-dirty-20201111.173951/rw/usr/bin/" pid=3733 comm="ntpd" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

Fix:
Add rw/.. mount path similar to root path access provided for ntpd in /etc/apparmor.d/usr.sbin.ntpd

Signed-off-by: Antony Rheneus <arheneus@marvell.com>
2020-12-18 04:57:35 -08:00
shlomibitton
a6aaffd2ad
[kdump] Add more kernel panic conditions for vmcore dump (#6095)
Create new file to "sysctl.d" with desired panic conditions.
It will trigger a vmcore dump using kdump-tools on these situations.

Signed-off-by: Shlomi Bitton <shlomibi@nvidia.com>
2020-12-15 08:54:13 -08:00
rajendra-dendukuri
b60448a006
kdump: Add default kdump command line arguments (#6180)
The default /etc/default/kdump-tools file provided by the kdump-tools
package doesn't set a value for KDUMP_CMDLINE_APPEND.

The default kdump command line arguments need to be set in order
to extend them to use additional arguments required for SONiC
platforms.

Signed-off-by: Rajendra Dendukuri <rajendra.dendukuri@broadcom.com>
2020-12-15 08:52:23 -08:00
judyjoseph
6d9ecbcfd8
Move frr logs from syslog to /var/log/frr/*.log (#5988)
- Why I did it
Move frr logs from syslog from the directory /var/log/quagga/.log to /var/log/frr/log

- How I did it
Updated the rsyslog config files.

- How to verify it
Verified the logs come into the file zebra.log and bgpd.log in the DIR /var/log/frr/log
2020-12-10 08:44:34 -08:00
rajendra-dendukuri
31ce20ac38
[kdump]: Kdump usability and reliability improvements (#6113)
- Allow platform specific reboot script to be called after crash kernel has
finished copying the kernel vmcore
- Disable pcie advanced features when running crash kernel. This improves
reliability of the crash kernel to successfully create a vmcore and also
reboot
- Allow crash kernel to reboot if a panic is seen while it is generating a
vmcore
- Fix crash kernel to use the SONiC specific /usr/local/bin/reboot script
instead of the Linux reboot command /sbin/reboot
- Use sonic_platform as the kernel command line parameter to pass platform identifier string

Signed-off-by: Rajendra Dendukuri <rajendra.dendukuri@broadcom.com>
2020-12-10 01:32:37 -08:00
abdosi
59c1e3a78a
[multi-asic] Enhancing monit process checker for multi-asic. (#6100)
Added Support of process checker for work on multi-asic platforms.
2020-12-04 10:39:43 -08:00
Prabhu Sreenivasan
2895b79482
[ntp]: NTP service ordering (#6115)
Make sure ntp-config service is executed before ntpd

Updated ntp-config service files to force dependency with ntp service. Also resolved circular dependency with --no-block flag. (needed as ntp-config service internally invokes systemd to restart ntp which in turn waits for ntp-config to complete)

Signed-off-by: Prabhu Sreenivasan <prabhu.sreenivasan@broadcom.com>
2020-12-04 08:49:20 -08:00
Joe LeVeque
905a5127bb
[Python] Align files in root dir, dockers/ and files/ with PEP8 standards (#6109)
**- Why I did it**

Align style with slightly modified PEP8 standards (extend maximum line length to 120 chars). This will also help in the transition to Python 3, where it is more strict about whitespace, plus it helps unify style among the SONiC codebase. Will tackle other directories in separate PRs.

**- How I did it**

Using `autopep8 --in-place --max-line-length 120` and some manual tweaks.
2020-12-03 15:57:50 -08:00
Blueve
6a6e583b06
[bash.bashrc] Add reverse SSH script to bash.bashrc (#5438)
* [bash.bashrc] Add reverse SSH script to bash.bashrc
* Fix command issue and add emptt line before EOF
* Add checks for SSH_TARGET_CONSOLE_LINE

Signed-off-by: Jing Kan jika@microsoft.com
2020-11-24 14:11:53 +08:00
Sudharsan Dhamal Gopalarathnam
98a434e8c1
Copp Manager Changes (#4861)
*Introduce CoPP Manager infrastructure
Copp service to generate initial copp config template file

Co-authored-by: dgsudharsan <sudharsan_gopalarat@dell.com>
2020-11-23 09:31:42 -08:00
Sujin Kang
5b31996f7b
[reboot-history] Add reboot history to state db (#5933)
- Why I did it
Add reboot history to State db so that can be used telemetry service
- How I did it
Split the process-reboot-cause service to determine-reboot-cause and process-reboot-cause
determine-reboot-cause to determine the reboot cause
process-reboot-cause to parse the reboot cause files and put the reboot history to state db
Moved to sonic-host-service* packages
- How to verify it
Performed unit test and tested on DUT
2020-11-20 20:08:18 -08:00
Joe LeVeque
23247514f9
Fix a number of LGTM alerts (#5952)
Fix 259 alerts reported by the LGTM tool:

- 245 for Unused import
- 7 for Testing equality to None
- 5 for Duplicate key in dict literal
- 1 for Module is imported more than once
- 1 for Unused local variable
2020-11-20 10:58:48 -08:00
JiangboHe
461e43649b
fix error: interface counters is mismatch after warm-reboot (#5346)
- Why I did it
There is a issue for counters after warm-reboot:
If I clear counters by command "sonic-clear counters", then execute 'warm-reboot' and whenSONiC is restart, the counters showed with command "show interface counters" is still old counters before "sonic-clear". It is not the right counters because the counters file in '/tmp' is lost in warm-reboot process.

- How I did it
I fixed it by saving '/tmp/portstat-0' folders in '/host/' before executing 'warm-reboot' (in pull request Azure/sonic-utilities#1099 ), and restore the counters folders back to '/tmp/' after warm-reboot process is finished.

- How to verify it

Clear counters by command 'sonic-clear'
sonic-clear counters
sonic-clear dropcounters
sonic-clear pfccounters
sonic-clear queuecounters
sonic-clear rifcounters
Execute 'warm-reboot'
Use command ‘show interface counters’ to see if the counters is right.
2020-11-20 10:37:45 -08:00
pavel-shirshov
a92732fe5d
[bgpcfgd]: Fixes for BBR (#5956)
* Add explicit default state into the constants.yml
* Enable/disable only peer-groups, available in the config
* Retrieve updates from frr before using configuration

Co-authored-by: Pavel Shirshov <pavel.contrib@gmail.com>
2020-11-19 00:07:58 -08:00
Prince Sunny
1eaaf64ed2
Set preference for forced mgmt routes (#5844)
When forced mgmt routes are present, the issue fixed as part of #5754 is not complete. 
Added a preference(priority) field to forced mgmt route ip rules
2020-11-10 14:20:13 -08:00
arlakshm
2b41f6bd5c
Add the vtysh command with newly added "-n" option for multi asic to the read_only_cmds (#5845)
In multi asic platforms the "show ip bgp summary" commands is not available for user with read only privileges, so to fix this the vtysh command with the new "-n" option, added for multi asic platforms, needs to be added to the READ_ONLY_COMMANDS list in the sudoers files. Added the command vtysh -n [0-9] -c show * to list of READ_ONLY_COMMANDS in the sudoers files in this commit.

Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan <arlakshm@microsoft.com>
2020-11-10 12:18:49 -08:00
Joe LeVeque
04d0e8ab00
[hostcfgd] Convert to Python 3; Add to sonic-host-services package (#5713)
To consolidate host services and install via packages instead of file-by-file, also as part of migrating all of SONiC to Python 3, as Python 2 is no longer supported.
2020-11-07 12:48:19 -08:00
Joe LeVeque
9e7e092610
[Monit process_checker] Convert to Python 3 (#5836)
Convert process_checker script to Python 3
2020-11-07 12:46:23 -08:00
Stepan Blyshchak
9bc693ce6e
[hostcfgd] If feature state entry not in the cache, add a default state (#5777)
Our use case is to register new features in runtime. The previous change which introduced the cache broke this capability and caused hostcfgd crash.

Signed-off-by: Stepan Blyshchak <stepanb@nvidia.com>
2020-11-06 10:24:31 -08:00
Joe LeVeque
13ff7b38d5
[docker-wait-any] Convert to Python 3, install dependency in host OS (#5784)
- Convert docker-wait-any script to Python 3
- Install Python 3 Docker Engine API in host OS
2020-11-05 11:23:00 -08:00
Joe LeVeque
d8045987a6
[core_uploader.py] Convert to Python 3; Use logger from sonic-py-common for uniform logging (#5790)
- Convert core_uploader.py script to Python 3
- Use logger from sonic-py-common for uniform logging
- Reorganize imports alphabetically per PEP8 standard
- Two blank lines precede functions per PEP8 standard
- Remove unnecessary global variable declarations
2020-11-05 11:19:26 -08:00
Lawrence Lee
10ab46f7a0
Revert "[docker-base]: Rate limit priority INFO and lower in syslog" (#5763)
* This was a temporary fix for orchagent spamming log messages and causing rate limiting, leading to critical messages being dropped for the syslog. No longer needed since Azure/sonic-sairedis#680 was merged.
2020-11-02 08:49:40 -08:00
lguohan
c8a00eda95
[mgmt ip]: mvrf ip rule priority change to 32765 (#5754)
Fix Azure/SONiC#551

When eth0 IP address is configured, an ip rule is getting added for eth0 IP address through the interfaces.j2 template. 

This eth0 ip rule creates an issue when VRF (data VRF or management VRF) is also created in the system.
When any VRF (data VRF or management VRF) is created, a new rule is getting added automatically by kernel as "1000: from all lookup [l3mdev-table]".
This l3mdev IP rule is never getting deleted even if VRF is deleted.

Once if this l3mdev IP rule is added, if user configures IP address for the eth0 interface, interfaces.j2 adds an eth0 IP rule as "1000:from 100.104.47.74 lookup default ". Priority 1000 is automatically chosen by kernel and hence this rule gets higher priority than the already existing rule "1001:from all lookup local ".

This results in an issue "ping from console to eth0 IP does not work once if VRF is created" as explained in Issue 551.
More details and possible solutions are explained as comments in the Issue551.

This PR is to resolve the issue by always fixing the low priority 32765 for the IP rule that is created for the eth0 IP address.
Tested with various combinations of VRF creation, deletion and IP address configuration along with ping from console to eth0 IP address.

Co-authored-by: Kannan KVS <kannan_kvs@dell.com>
2020-10-31 20:45:59 -07:00
abdosi
dddf96933c
[monit] Adding patch to enhance syslog error message generation for monit alert action when status is failed. (#5720)
Why/How I did:

Make sure first error syslog is triggered based on FAULT TOLERANCE condition.

Added support of repeat clause with alert action. This is used as trigger
for generation of periodic syslog error messages if error is persistent

Updated the monit conf files with repeat every x cycles for the alert action
2020-10-31 17:29:49 -07:00
Renuka Manavalan
8d8aadb615
Load config after subscribe (#5740)
- Why I did it
The update_all_feature_states can run in the range of 20+ seconds to one minute. With load of AAA & Tacacs preceding it, any DB updates in AAA/TACACS during the long running feature updates would get missed. To avoid, switch the order.

- How I did it
Do a load after after updating all feature states.

- How to verify it
Not a easy one
Have a script that
restart hostcfgd
sleep 2s
run redis-cli/config command to update AAA/TACACS table

Run the script above and watch the file /etc/pam.d/common-auth-sonic for a minute.

- When it repro:
The updates will not reflect in /etc/pam.d/common-auth-sonic
2020-10-31 16:38:32 -07:00
Joe LeVeque
e111204206
[caclmgrd] Convert to Python 3; Add to sonic-host-services package (#5739)
To consolidate host services and install via packages instead of file-by-file, also as part of migrating all of SONiC to Python 3, as Python 2 is no longer supported, convert caclmgrd to Python 3 and add to sonic-host-services package
2020-10-29 16:29:12 -07:00
judyjoseph
6088bd59de
[multi-ASIC] BGP internal neighbor table support (#5520)
* Initial commit for BGP internal neighbor table support.
  > Add new template named "internal" for the internal BGP sessions
  > Add a new table in database "BGP_INTERNAL_NEIGHBOR"
  > The internal BGP sessions will be stored in this new table "BGP_INTERNAL_NEIGHBOR"

* Changes in template generation tests with the introduction of internal neighbor template files.
2020-10-28 16:41:27 -07:00
bingwang-ms
36c52cca2b
Fix 'NoSuchProcess' exception in process_checker (#5716)
The psutil library used in process_checker create a cache for each
process when calling process_iter. So, there is some possibility that
one process exists when calling process_iter, but not exists when
calling cmdline, which will raise a NoSuchProcess exception. This commit
fix the issue.

Signed-off-by: bingwang <bingwang@microsoft.com>
2020-10-27 09:25:35 +08:00
Joe LeVeque
3a4435eb53
Add sonic-host-services and sonic-host-services-data packages (#5694)
**- Why I did it**

Install all host services and their data files in package format rather than file-by-file

**- How I did it**

- Create sonic-host-services Python wheel package, currently including procdockerstatsd
  - Also add the framework for unit tests by adding one simple procdockerstatsd test case
- Create sonic-host-services-data Debian package which is responsible for installing the related systemd unit files to control the services in the Python wheel. This package will also be responsible for installing any Jinja2 templates and other data files needed by the host services.
2020-10-23 09:52:29 -07:00
judyjoseph
ace7f24cba
[docker-teamd]: Add teamd as a depedent service to swss (#5628)
**- Why I did it**
On teamd docker restart, the swss and syncd needs to be restarted as there are dependent resources present.

**- How I did it**
Add the teamd as a dependent service for swss
Updated the docker-wait script to handle service and dependent services separately.
Handle the case of warm-restart for the dependent service   

**- How to verify it**

Verified the following scenario's with the following testbed 
VM1 ----------------------------[DUT 6100] -----------------------VM2,  ping traffic continuous between VMs

1. Stop teamd docker alone  
      >  swss, syncd dockers seen going away
      >  The LAG reference count error messages seen for a while till swss docker stops.
      >  Dockers back up.

2. Enable WR mode for teamd. Stop teamd docker alone  
      >  swss, syncd dockers not removed.
      >  The LAG reference count error messages not seen
      >  Repeated stop teamd docker test - same result, no effect on swss/syncd.

3. Stop swss docker. 
      >  swss, teamd, syncd goes off - dockers comes back correctly, interfaces up

4. Enable WR mode for swss . Stop swss docker 
      >  swss goes off not affecting syncd/teamd dockers.

5. Config reload 
      > no reference counter error seen, dockers comes back correctly, with interfaces up

6. Warm reboot, observations below
	 > swss docker goes off first 
	 > teamd + syncd goes off to the end of WR process.
 	 > dockers comes back up fine.
	 > ping traffic between VM's was NOT HIT

7. Fast reboot, observations below
	 > teamd goes off first ( **confirmed swss don't exit here** )
	 > swss goes off next 
	 > syncd goes away at the end of the FR process
	 > dockers comes back up fine.
	 > there is a traffic HIT as per fast-reboot

8. Verified in multi-asic platform, the tests above other than WR/FB scenarios
2020-10-23 00:41:16 -07:00
yozhao101
af97e23686
[hostcfgd] Enable/disable the container service only when the feature state was changed. (#5689)
**- Why I did it**
If we ran the CLI commands `sudo config feature autorestart snmp disabled/enabled` or `sudo config feature autorestart swss disabled/enabled`, then SNMP container will be stopped and started. This behavior was not expected since we updated the `auto_restart` field not update `state` field in `FEATURE` table. The reason behind this issue is that either `state` field or `auto_restart` field was updated, the function `update_feature_state(...)` will be invoked which then starts snmp.timer service.
The snmp.timer service will first stop snmp.service and later start snmp.service. 

In order to solve this issue, the function `update_feature_state(...)` will be only invoked if `state` field in `FEATURE` table was
updated.

**- How I did it**
When the demon `hostcfgd` was activated, all the values of `state` field in `FEATURE` table of each container will be
cached. Each time the function `feature_state_handler(...)` is invoked, it will determine whether the `state` field of a
container was changed or not. If it was changed, function `update_feature_state(...)` will be invoked and the cached
value will also be updated. Otherwise, nothing will be done.

**- How to verify it**
We can run the CLI commands `sudo config feature autorestart snmp disabled/enabled` or `sudo config feature autorestart swss disabled/enabled` to check whether SNMP container is stopped and started. We also can run the CLI commands  `sudo config feature state snmp disabled/enabled` or `sudo config feature state swss disabled/enabled` to check whether the container is stopped and restarted.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2020-10-22 20:01:07 -07:00