- Why I did it
Initially, we used Monit to monitor critical processes in each container. If one of critical processes was not running
or crashed due to some reasons, then Monit will write an alerting message into syslog periodically. If we add a new process
in a container, the corresponding Monti configuration file will also need to update. It is a little hard for maintenance.
Currently we employed event listener of Supervisod to do this monitoring. Since processes in each container are managed by
Supervisord, we can only focus on the logic of monitoring.
- How I did it
We borrowed the event listener of Supervisord to monitor critical processes in containers. The event listener will take
following steps if it was notified one of critical processes exited unexpectedly:
The event listener will first check whether the auto-restart mechanism was enabled for this container or not. If auto-restart mechanism was enabled, event listener will kill the Supervisord process, which should cause the container to exit and subsequently get restarted.
If auto-restart mechanism was not enabled for this contianer, the event listener will enter a loop which will first sleep 1 minute and then check whether the process is running. If yes, the event listener exits. If no, an alerting message will be written into syslog.
- How to verify it
First, we need checked whether the auto-restart mechanism of a container was enabled or not by running the command show feature status. If enabled, one critical process should be selected and killed manually, then we need check whether the container will be restarted or not.
Second, we can disable the auto-restart mechanism if it was enabled at step 1 by running the commnad sudo config feature autorestart <container_name> disabled. Then one critical process should be selected and killed. After that, we will see the alerting message which will appear in the syslog every 1 minute.
- Which release branch to backport (provide reason below if selected)
201811
201911
[x ] 202006
**- Why I did it**
We were building a custom version of Supervisor because I had added patches to prevent hangs and crashes if the system clock ever rolled backward. Those changes were merged into the upstream Supervisor repo as of version 3.4.0 (http://supervisord.org/changes.html#id9), therefore, we should be able to simply install the vanilla package via pip. This will also allow us to easily move to Python 3, as Python 3 support was added in version 4.0.0.
**- How I did it**
- Remove Makefiles and patches for building supervisor package from source
- Install Python 3 supervisor package version 4.2.1 in Buster base container
- Also install Python 3 version of supervisord-dependent-startup in Buster base container
- Debian package installed binary in `/usr/bin/`, but pip package installs in `/usr/local/bin/`, so rather than update all absolute paths, I changed all references to simply call `supervisord` and let the system PATH find the executable to prevent future need for changes just in case we ever need to switch back to build a Debian package, then we won't need to modify these again.
- Install Python 2 supervisor package >= 3.4.0 in Stretch and Jessie base containers
When stopping the swss, pmon or bgp containers, log messages like the following can be seen:
```
Aug 23 22:50:43.789760 sonic-dut INFO swss#supervisord 2020-08-23 22:50:10,061 ERRO pool dependent-startup event buffer overflowed, discarding event 34
Aug 23 22:50:43.789760 sonic-dut INFO swss#supervisord 2020-08-23 22:50:10,063 ERRO pool dependent-startup event buffer overflowed, discarding event 35
Aug 23 22:50:43.789760 sonic-dut INFO swss#supervisord 2020-08-23 22:50:10,064 ERRO pool dependent-startup event buffer overflowed, discarding event 36
Aug 23 22:50:43.789760 sonic-dut INFO swss#supervisord 2020-08-23 22:50:10,066 ERRO pool dependent-startup event buffer overflowed, discarding event 37
```
This is due to the number of programs in the container managed by supervisor, all generating events at the same time. The default event queue buffer size in supervisor is 10. This patch increases that value in all containers in order to eliminate these errors. As more programs are added to the containers, we may need to further adjust these values. I increased all buffer sizes to 25 except for containers with more programs or templated supervisor.conf files which allow for a variable number of programs. In these cases I increased the buffer size to 50. One final exception is the swss container, where the buffer fills up to ~50, so I increased this buffer to 100.
Resolves https://github.com/Azure/sonic-buildimage/issues/5241
* 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>
* SONiC system telemetry Support
Signed-off-by: Jipan Yang <jipan.yang@alibaba-inc.com>
* Update package name from telemetry to sonic-telemetry
Signed-off-by: Jipan Yang <jipan.yang@alibaba-inc.com>
