Commit Graph

240 Commits

Author SHA1 Message Date
Stepan Blyshchak
ab78ee0232
[mgmt-framework] start after syncd (#4174)
every service starts after syncd to start the most critical parts first

Signed-off-by: Stepan Blyschak <stepanb@mellanox.com>
2020-02-20 14:49:28 -08:00
Prince Sunny
31fb631cd3
Fix service and container name to be same (#4151) 2020-02-14 11:08:57 -08:00
Olivier Singla
6a0dcb1b16
[kernel]: security kernel update to 4.9.189 (#3913)
This patch upgrade the kernel from version
4.9.0-9-2 (4.9.168-1+deb9u3) to 4.9.0-11-2 (4.9.189-3+deb9u2)

Co-authored-by: rajendra-dendukuri <47423477+rajendra-dendukuri@users.noreply.github.com>
2020-02-12 17:41:58 -08:00
Sumukha Tumkur Vani
a9f3619901
Start RestAPI container when sonic boots (#4140)
* Start RestAPI container when sonic boots
2020-02-12 16:38:45 -08:00
yozhao101
729f343f77
[Services] Restart database service upon unexpected critical process exit. (#4138)
* [database] Implement the auto-restart feature for database container.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [database] Remove the duplicate dependency in service files. Since we
already have updategraph ---> config_setup ---> database, we do not need
explicitly add database.service in all other container service files.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [event listener] Reorganize the line 73 in event listener script.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [database] update the file sflow.service.j2 to remove the duplicate
dependency.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [event listener] Add comments in event listener.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [event listener] Update the comments in line 56.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [event listener] Add parentheses for if statement in line 76 in event listener.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2020-02-11 14:03:02 -08:00
yozhao101
41958aad52
[init_cfg.json] Add new FEATURE and CONTAINER_FEATURE tables (#4137)
* [init_cfg.json] Add a new table CONTAINER_FEATURE.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Update the content of table CONTAINER_FEATURE.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Use the template to generate the table
CONTAINER_FEATURE.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Add a new table FEATURE.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Change the order of container names according to
alphabetical order.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>

* [init_cfg.json] Change the dhcp_relay container name and add rest-api.

Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2020-02-11 11:05:21 -08:00
yozhao101
3bb61ab10c
[init_cfg.json] Maintain a separate init_cfg.json.j2 template file (#4092) 2020-02-07 12:35:35 -08:00
Kiran Kumar Kella
97165a0d69
Changes in sonic-buildimage to support the NAT feature (#3494)
* Changes in sonic-buildimage for the NAT feature
- Docker for NAT
- installing the required tools iptables and conntrack for nat

Signed-off-by: kiran.kella@broadcom.com

* Add redis-tools dependencies in the docker nat compilation

* Addressed review comments

* add natsyncd to warm-boot finalizer list

* addressed review comments

* using swsscommon.DBConnector instead of swsssdk.SonicV2Connector

* Enable NAT application in docker-sonic-vs
2020-01-29 17:40:43 -08:00
B S Rama krishna
1a7d822638
[kdump]: kdump support for arm, as the dependency with uboot, working on that. (#3962)
as the current kdump installation is searching for grub path, and ARM arch (marvell-armhf) are dependent on uboot, these changes has to be addressed. For now skipping kdump installation on ARM

Co-authored-by: lguohan <lguohan@gmail.com>
2020-01-28 22:12:52 -08:00
Stephen Sun
33e918f7ff
[Mellanox] platform api support firmware install (#3931)
support firmware install, including CPLD and BIOS.

CPLD: cpldupdate
BIOS: boot to onie and update BIOS in onie and then boot to SONiC
2020-01-28 21:55:50 -08:00
kannankvs
7cb63008d7
mvrf_avoid_snmp_yml_config: made changes to pass SNMP config from con… (#4057)
* mvrf_avoid_snmp_yml_config: made changes to pass SNMP config from confiDB to snmpd.conf without using snmp.yml
* added a missing if condition
2020-01-28 17:41:21 -08:00
SuvarnaMeenakshi
c9483796dc [baseimage]: support building multi-asic component (#3856)
- move single instance services into their own folder
- generate Systemd templates for any multi-instance service files in slave.mk
- detect single or multi-instance platform in systemd-sonic-generator based on asic.conf platform specific file.
- update container hostname after creation instead of during creation (docker_image_ctl)
- run Docker containers in a network namespace if specified
- add a service to create a simulated multi-ASIC topology on the virtual switch platform

Signed-off-by: Lawrence Lee <t-lale@microsoft.com>
Signed-off-by: Suvarna Meenakshi <Suvarna.Meenaksh@microsoft.com>
2020-01-26 13:56:42 -08:00
Dong Zhang
7aa0baf709 [MultiDB] (except ./src and ./dockers dirs): replace redis-cli with sonic-db-cli and use new DBConnector (#4035)
* [MultiDB] (except ./src and ./dockers dirs): replace redis-cli with sonic-db-cli and use new DBConnector
* update comment for a potential bug
* update comment
* add TODO maker as review reqirement
2020-01-22 11:26:23 -08:00
Kalimuthu-Velappan
6dcc08e36c [psud]: Fix for psud crash because of database connection reset (#3647)
When database service is down, psud daemon throws an error because of DB connection reset, this because pmon service has no dependency with database service.

To resolve this issue, added database service dependency to the pmon service.

Also, increased the net.core.somaxconn value to 512 to solve the connection failure on the scaled setup.
2020-01-10 13:26:04 -08:00
Sujin Kang
856b4b64eb [reboot cause]: Delay process-reboot-cause service until network connection is stable (#4003) 2020-01-10 09:47:13 -08:00
lguohan
483a5946a8
Revert "[MultiDB]except src and dockers : replace redis-cli with sonic-db-cli and use new DBConnector (#3928)" (#4002)
This reverts commit 0dae59ac30.
2020-01-10 08:27:34 -08:00
Qi Luo
c4755192b1
Fix bug: chroot command line (#3972) 2020-01-08 14:37:06 -08:00
Dong Zhang
0dae59ac30 [MultiDB]except src and dockers : replace redis-cli with sonic-db-cli and use new DBConnector (#3928)
* [MultiDB]except src and dockers : replace redis-cli with sonic-db-cli and use new DBConnector
* fix vs tests along with swss vs tests together
2020-01-02 14:46:25 -08:00
Joe LeVeque
24a0c46464
[monit] Build from source and patch to use MemAvailable value if available on system (#3875) 2019-12-30 18:25:57 -08:00
Renuka Manavalan
78db0804d3
corefile uploader: Updates per review comments offline (#3915)
* Updates per review comments
1) core_uploader service waits for syslog.service
2) core_uploader service enabled for restart on failure
3) Use mtime instead of file size + ample time to be robust.

* Avoid reloading already uploaded file, by marking the names with a prefix.

* Updated failing path.
1) If rc file is missing or required data missing, it periodically logs error in forever loop.
2) If upload fails, retry every hour with a error log, forever.

* Fix few bugs

* The binary update_json.py will come from sonic-utilities.
2019-12-30 13:01:03 -08:00
Prabhu Sreenivasan
87f70108cb SONiC Management Framework Release 1.0 (#3488)
* Added sonic-mgmt-framework as submodule / docker

* fix build issues

* update sonic-mgmt-framework submodule branch to master

* Merged changes 70007e6d2ba3a4c0b371cd693ccc63e0a8906e77..00d4fcfed6a759e40d7b92120ea0ee1f08300fc6

00d4fcfed6a759e40d7b92120ea0ee1f08300fc6 Modified environemnt variables

* Changes to build sonic-mgmt-framework docker

* bumped up sonic-mgmt-framework commit-id

* version bump for sonic-mgmt-framework commit-it

* bumped up sonic-mgmt-framework commit-id

* Add python packages to docker

* Build fix for docker with python packages

* added libyang as dependent package

* Allow building images on NFS-mounted clones

Prior to this change, `build_debian.sh` would generate a Debian
filesystem in `./fsroot`. This needs root permissions, and one of the
tests that is performed is whether the user can create a character
special file in the filesystem (using mknod).

On most NFS deployments, `root` is the least privileged user, and cannot
run mknod. Also, attempting to run commands like rm or mv as root would
fail due to permission errors, since the root user gets mapped to an
unprivileged user like `nobody`.

This commit changes the location of the Debian filesystem to `/fsroot`,
which is a tmpfs mount within the slave Docker. The default squashfs,
docker tarball and zip files are also created within /tmp, before being
copied back to /sonic as the regular user.

The side effect of this change is that the contents of `/fsroot` are no
longer available once the slave container exits, however they are
available within the squashfs image.

Signed-off-by: Nirenjan Krishnan <Nirenjan.Krishnan@dell.com>

* bumped up sonc-mgmt-framework commit to include PR #18

*     REST Server startup script is enahnced to read the settings from
    ConfigDB. Below table provides mapping of db field to command line
    argument name.

    ============================================================
    ConfigDB entry key      Field name      REST Server argument
    ============================================================
    REST_SERVER|default     port            -port
    REST_SERVER|default     client_auth     -client_auth
    REST_SERVER|default     log_level       -v
    DEVICE_METADATA|x509    server_crt      -cert
    DEVICE_METADATA|x509    server_key      -key
    DEVICE_METADATA|x509    ca_crt          -cacert
    ============================================================

* Replace src/telemetry as submodule to sonic-telemetry

* Update telemetry commit HEAD

* Update sonic-telemetry commit HEAD

* libyang env path update

* Add libyang dependency to telemetry

* Add scripts to create JSON files for CLI backend

Scripts to create /var/platform/syseeprom and /var/platform/system, which are back-end
files for CLI, for system EEPROM and system information.

Signed-off-by: Howard Persh <Howard_Persh@dell.com>

* In startup script, create directory where CLI back-end files live

Signed-off-by: Howard Persh <Howard_Persh@dell.com>

* build dependency pkgs added to docker for build failure fix

* Changes to fix build issue for mgmt framework

* Fix exec path issue with telemetry

* s5232[device] PSU detecttion and default led state support

* Processing of first boot in rc.local should not have premature exit

Signed-off-by: Howard Persh <Howard_Persh@dell.com>

*  docker mount options added for platform, system features

* bumped up sonic-mgmt-framework commit id to pick 23rd July 2019 changes

* Added mount options for telemetry docker to get access for system and platform info.

* Update commit for sonic-utilities

* [dell]: Corrected dport map and renamed config files for S5232F

* Fix telemetry submodule commit

* added support for sonic-cli console

* [Dell S5232F, Z9264F] Harden FPGA driver kernel module

For Dell S5232F and Z9264F platforms, be more strict when checking state
in ISR of FPGA driver, to harden against spurious interrupts.

Signed-off-by: Howard Persh <Howard_Persh@dell.com>

* update mgmt-framework submodule to 27th Aug commit.

* remove changes not related to mgmt-framework and sonic-telemetry

* Revert "Replace src/telemetry as submodule to sonic-telemetry"

This reverts commit 11c3192975.

* Revert "Replace src/telemetry as submodule to sonic-telemetry"

This reverts commit 11c3192975.

* make submodule changes and remove a change not related to PR

* more changes

* Update .gitmodules

* Update Dockerfile.j2

* Update .gitmodules

* Update .gitmodules

* Update .gitmodules

reverting experimental change

* Removed syspoll for release_1.0

Signed-off-by: Jeff Yin <29264773+jeff-yin@users.noreply.github.com>

* Update docker-sonic-mgmt-framework.mk

* Update sonic-mgmt-framework.mk

* Update sonic-mgmt-framework.mk

* Update docker-sonic-mgmt-framework.mk

* Update docker-sonic-mgmt-framework.mk

* Revert "Processing of first boot in rc.local should not have premature exit"

This reverts commit e99a91ffc2.

* Remove old telemetry directory

* Update docker-sonic-mgmt-framework.mk

* Resolving merge conflict with Azure

* Reverting the wrong merge

* Use CVL_SCHEMA_PATH instead of changing directory for telemetry startup

* Add missing export

* Add python mmh3 to slave dockerfile

* Remove sonic-mgmt-framework build dep for telemetry, fix dialout startup issues

* Provided flag to disable compiling mgmt-framework

* Update sonic-utilites point latest commit id

* Point sonic-utilities to Azure accepted SHA

* Updating mgmt framework to right sha

* Add sonic-telemetry submodule

* Update the mgmt-framework commit id

Co-authored-by: jghalam <joe.ghalam@gmail.com>
Co-authored-by: Partha Dutta <51353699+dutta-partha@users.noreply.github.com>
Co-authored-by: srideepDell <srideep_devireddy@dell.com>
Co-authored-by: nirenjan <nirenjan@users.noreply.github.com>
Co-authored-by: Sachin Holla <51310506+sachinholla@users.noreply.github.com>
Co-authored-by: Eric Seifert <seiferteric@gmail.com>
Co-authored-by: Howard Persh <hpersh@yahoo.com>
Co-authored-by: Jeff Yin <29264773+jeff-yin@users.noreply.github.com>
Co-authored-by: Arunsundar Kannan <31632515+arunsundark@users.noreply.github.com>
Co-authored-by: rvasanthm <51932293+rvasanthm@users.noreply.github.com>
Co-authored-by: Ashok Daparthi-Dell <Ashok_Daparthi@Dell.com>
Co-authored-by: anand-kumar-subramanian <51383315+anand-kumar-subramanian@users.noreply.github.com>
2019-12-23 21:47:16 -08:00
Stepan Blyshchak
4ba0ff25d2 [services] make snmp.timer work again and delay telemetry.service (#3742)
Delay CPU intensive services at boot

- How I did it
Made snmp.timer work and add telemetry.timer.
But this is not enough because it breaks the existing snmp dependency on swss.
So, in this solution snmp timer is a wanted by swss service, but since OnBootSec timer expires only once it will not trigger snmp service, so I added line "OnUnitActiveSec=0 sec" which will start snmp service based on the last time it was active. On boot only OnBootSec will expire, on swss start/restarts only second timer will expire immediately and trigger snmp service.
However, snmp service will not stop after "systemctl stop snmp" because of the second timer which will always expire when snmp service because unavailable.
So there is a conflict which will be handled by systemd if we add "Conflicts=" line to both snmp.service and snmp.timer.

So during boot:

snmp does not start by default
swss starts and starts snmp timer
OnUnitActiveSec=0 does not expire since there is no snmp active
OnBootSec expires and starts snmp service and snmp timer gets stopped
During "systemctl restart swss"

snmp stops because of Requisite on swss
snmp unblocks snmp timer from running
swss starts and starts snmp timer
OnUnitActiveSec=0 expires imidiately and start snmp which stops snmp timer
During "systemctl stop snmp"

stop of snmp service unblocks snmp timer but no one starts the timer so it is not started by "OnUnitActiveSec=0"
2019-12-16 09:07:05 -08:00
Renuka Manavalan
3ab4b71656
Corefile uploader service (#3887)
* Corefile uploader service

1) A service is added to watch /var/core and upload to Azure storage
2) The service is disabled on boot. One may enable explicitly.
3) The .rc file to be updated with acct credentials and http proxy to use.
4) If service is enabled with no credentials, it would sleep, with periodic log messages
5) For any update in .rc, the service has to be restarted to take effect.

* Remove rw permission for .rc file for group & others.

* Changes per review comments.
Re-ordered .rc file per JSON.dump order.
Added a script to enable partial update of .rc, which HWProxy would use to add acct key.

* Azure storage upload requires python module futures, hence added it to install list.

* Removed trailing spaces.

* A mistake in name corrected.
Copy the .rc updater script to /usr/bin.
2019-12-15 16:48:48 -08:00
rajendra-dendukuri
fec80293dd ZTP infrastructure changes to support DHCP discovery provisioning data (#3298)
* ZTP infrastructure changes to support DHCP discovery provisioning data

- Dynamically generate DHCP client configuration based on current ZTP state
- Added support to request and process hostname when using DHCPv6
- Do not process graphservice url dhcp option if ZTP is enabled, ZTP service
will process it
- Generate /e/n/i file with all active interfaces seeking address assignment
via DHCP. Only interfaces that are created in Linux will be added to /e/n/i.
Also DHCP is started only on linked up in-band interfaces.

Signed-off-by: Rajendra Dendukuri <rajendra.dendukuri@broadcom.com>
2019-12-10 08:16:56 -08:00
pavel-shirshov
1848fb262b [fast-reboot]: Save fast-reboot state into the db (#3741)
Put a flag for fast-reboot to the db using EXPIRE feature. Using this flag in other part of SONiC to start in Fast-reboot mode. If we reload a config, the state in the db will be removed.
2019-12-04 14:10:19 -08:00
rajendra-dendukuri
cda61290ac [config-setup]: create a SONiC configuration management service (#3227)
* Create a SONiC configuration management service
* Perform config db migration after loading config_db.json to redis DB
* Migrate config-setup post migration hooks on image upgrade

config-setup post migration hooks help user to migrate configurations from
old image to new image. If the installed hooks are user defined they will not
be part of the newly installed image. So these hooks have to be migrated to
new image and only then they can be executing when the new image is booting.

The changes in this fix migrate config-setup post-migration hooks and ensure
that any hooks with the same filename in newly installed image are not
overwritten.

It is expected that users install new hooks as per their requirement and
not edit existing hooks. Any changes to existing hooks need to be done as
part of new image and not post bootup.
2019-12-04 07:15:58 -08:00
rajendra-dendukuri
eec594adf2 [sonic-ztp]: Build sonic-ztp package (#3299)
* Build sonic-ztp package

- Add changes in make rules to conditionally include sonic-ztp package

Signed-off-by: Rajendra Dendukuri <rajendra.dendukuri@broadcom.com>
2019-12-04 04:50:56 -08:00
Joe LeVeque
100d67941a [services] sflow service sets swss service as Requisite=, not Requires= (#3819)
The sflow service should not start unless the swss service is started. However, if this service is not started, the sflow service should not attempt to start them, instead it should simply fail to start. Using Requisite=, we will achieve this behavior, whereas using Requires= will cause the required service to be started.
2019-12-03 09:50:49 -08:00
pra-moh
bfa96bbce3 Add daemon which periodically pushes process and docker stats to State DB (#3525) 2019-11-27 15:35:41 -08:00
Joe LeVeque
5e6f8adb22 [services] Remove explicit dependencies from dhcp_relay service file, control in swss.sh (#3823) 2019-11-26 16:59:45 -08:00
yozhao101
67fc68513e [Services] Restart Sflow service upon unexpected critical process exit. (#3751)
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2019-11-25 13:02:00 -08:00
yozhao101
df11b2b9f1 [Services] Restart Telemetry service upon unexpected critical process exit. (#3768)
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2019-11-18 16:56:44 -08:00
Joe LeVeque
85b0de3df1 [docker-syncd]: Restart SwSS, syncd and dependent services if a critical process in syncd container exits unexpectedly (#3534)
Add the same mechanism I developed for the SwSS service in #2845 to the syncd service. However, in order to cause the SwSS service to also exit and restart in this situation, I developed a docker-wait-any program which the SwSS service uses to wait for either the swss or syncd containers to exit.
2019-11-09 10:26:39 -08:00
Olivier Singla
c70d8bca9f [baseimage]: kdump support (#3722)
* In the event of a kernel crash, we need to gather as much information
as possible to understand and identify the root cause of the crash.
Currently, the kernel does not provide much information, which make
kernel crash investigation difficult and time consuming.

Fortunately, there is a way in the kernel to provide more information
in the case of a kernel crash. kdump is a feature of the Linux kernel
that creates crash dumps in the event of a kernel crash. This PR
will add kermel kdump support.

An extension to the CLI utilities config and show is provided to
configure and manage kdump:
 - enable / disable kdump functionality
 - configure kdump (how many kernel crash logs can be saved, memory
   allocated for capture kernel)
 - view kernel crash logs
2019-11-08 23:08:42 -08:00
Ying Xie
96fffd883d Revert "[services] make snmp.timer work again and delay telemetry.service (#3657)" (#3729)
This reverts commit d346cb3898.
2019-11-08 21:44:25 -08:00
pavel-shirshov
d5af096f41
[TSA]: Add community to the loopback prefix, when isolated (#3708)
* Rename asn/deployment_id_asn_map.yaml to constants/constants.yaml

* Fix bgp templates

* Add community for loopback when bgpd is isolated

* Use correct community value
2019-11-06 16:07:28 -08:00
Stepan Blyshchak
d346cb3898 [services] make snmp.timer work again and delay telemetry.service (#3657)
Signed-off-by: Stepan Blyschak <stepanb@mellanox.com>
2019-11-06 12:12:31 -08:00
yozhao101
a117b25446 [Services] Restart LLDP service upon unexpected critical process exit. (#3713)
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2019-11-06 11:02:57 -08:00
yozhao101
ed79f54569 [Services] Restart DHCP-Relay service upon unexpected critical process exit. (#3667)
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2019-11-05 18:32:14 -08:00
yozhao101
4c31ef3cd2 [Services] Restart Teamd service upon unexpected critical process exit. (#3703)
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2019-11-04 17:45:41 -08:00
yozhao101
4fa3a1e27e [Services] Restart Platform-monitor service upon unexpected critical process exit. (#3689)
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2019-11-04 17:44:01 -08:00
Stepan Blyshchak
8dbe13c4cc [services] improve startup time by changing startup order (#3656)
* [services] improve startup time by given precedence to critical services (syncd.service)

Signed-off-by: Stepan Blyschak <stepanb@mellanox.com>
2019-10-31 09:18:26 -07:00
yozhao101
cff30c59d0 [Services] Restart Router-advertiser service upon unexpected critical process exit (#3681)
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2019-10-30 16:41:55 -07:00
yozhao101
a0fbeeaca5 [Services] Restart SNMP service upon unexpected critical process exit. (#3650)
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
2019-10-22 14:41:12 -07:00
Wenda Ni
be52977aca Revert "Configure buffer profile to all ports (#3561)" (#3628)
This reverts commit 8861cbe98e.
2019-10-18 09:14:39 -07:00
kannankvs
150ed36be2 [snmp]: changes to handle snmp configuration as per the modified CLI (#3586)
While doing CLI changes for SNMP configuration, few changes are made in backend to handle the modified CLI.

** Changes**

- "community" for "snmp trap" is also made as "configurable". snmpd_conf.j2 is modified to handle the same.

- Changed the snmp.yml file generation from postStartAction to preStartAction in docker_image_ctl.j2 specific to SNMP docker, to ensure that the snmp.yml is generated before sonic-cfggen generates the snmpd.conf.

- Changed to make the code common for management vrf and default vrf. Users can configure snmp trap and snmp listening IP for both management vrf and default vrf.
2019-10-10 09:24:18 -07:00
Wenda Ni
8861cbe98e
Configure buffer profile to all ports (#3561)
Signed-off-by: Wenda Ni <wenni@microsoft.com>
2019-10-04 11:20:57 -07:00
Wenda Ni
cf0465bf53
Adopt per-port buffer and qos profile (#3542)
Signed-off-by: Wenda Ni <wenni@microsoft.com>
2019-10-02 13:01:16 -07:00
Stepan Blyshchak
52e35a0f95 [docker_image_ctl.j2] skip hostname update if is up to date (#3529)
Signed-off-by: Stepan Blyschak <stepanb@mellanox.com>
2019-10-01 20:48:03 -07:00
Stephen Sun
7308d2eb97 [Mellanox] Stop pmon ahead of syncd (#3505)
Issue Overview
shutdown flow

For any shutdown flow, which means all dockers are stopped in order, pmon docker stops after syncd docker has stopped, causing pmon docker fail to release sx_core resources and leaving sx_core in a bad state. The related logs are like the following:

INFO syncd.sh[23597]: modprobe: FATAL: Module sx_core is in use.
INFO syncd.sh[23597]: Unloading sx_core[FAILED]
INFO syncd.sh[23597]: rmmod: ERROR: Module sx_core is in use
config reload & service swss.restart
In the flows like "config reload" and "service swss restart", the failure cause further consequences:

sx_core initialization error with error message like "sx_core: create EMAD sdq 0 failed. err: -16"
syncd fails to execute the create switch api with error message "syncd_main: Runtime error: :- processEvent: failed to execute api: create, key: SAI_OBJECT_TYPE_SWITCH:oid:0x21000000000000, status: SAI_STATUS_FAILURE"
swss fails to call SAI API "SAI_SWITCH_ATTR_INIT_SWITCH", which causes orchagent to restart. This will introduce an extra 1 or 2 minutes for the system to be available, failing related test cases.
reboot, warm-reboot & fast-reboot
In the reboot flows including "reboot", "fast-reboot" and "warm-reboot" this failure doesn't have further negative effects since the system has already rebooted. In addition, "warm-reboot" requires the system to be shutdown as soon as possible to meet the GR time restriction of both BGP and LACP. "fast-reboot" also requires to meet the GR time restriction of BGP which is longer than LACP. In this sense, any unnecessary steps should be avoided. It's better to keep those flows untouched.

summary
To summarize, we have to come up with a way to ensure:

shutdown pmon docker ahead of syncd for "config reload" or "service swss restart" flow;
don't shutdown pmon docker ahead of syncd for "fast-reboot" or "warm-reboot" flow in order to save time.
for "reboot" flow, either order is acceptable.
Solution
To solve the issue, pmon shoud be stopped ahead of syncd stopped for all flows except for the warm-reboot.

- How I did it

To stop pmon ahead of syncd stopped. This is done in /usr/local/bin/syncd.sh::stop() and for all shutdown sequence.
Now pmon stops ahead of syncd so there must be a way in which pmon can start after syncd started. Another point that should be taken consideration is that pmon starting should be deferred so that services which have the logic of graceful restart in fast-reboot and warm-reboot have sufficient CPU cycles to meet their deadline.
This is done by add "syncd.service" as "After" to pmon.service and startin /usr/local/bin/syncd.sh::wait()
To start pmon automatically after syncd started.
2019-09-27 10:15:46 +02:00