Don't attempt to restart systemd-networkd if systemd is not running
(e.g. installing open5gs inside a chroot).
Fix for:
System has not been booted with systemd as init system (PID 1). Can't operate.
Failed to connect to bus: Host is down
dpkg: error processing package open5gs-upf:amd64 (--configure):
installed open5gs-upf:amd64 package post-installation script subprocess returned error exit status 1
smf_gtp_node_pool were properly freed.
However, the seqence was wrong, so we got a warning message.
To solve this problem, I've moved smf_gtp_node_alloc/free
from gtp_path.[ch] to context.[ch]
Recent commit re-enabling SBI HTTP/1.1 support
(10bdf39505cf525b95886c140b3c2e82e7427d29) started using libmicrohttpd's
API MHD_create_response_from_buffer_with_free_callback(), which is only
available starting from v0.9.61.
As a result, compilation in xUbuntu 18.04 started failing with errors
about the function not being found, since it ships with libmicrohttpd
v0.9.59.
Depending on 0.9.61 is fine since it's quite old (november 2018) and all
major current distros should for sure have an >= one. Let's simply bump
the version check so that it fails in an informative manner.
For null protection scheme the SUCI needs to be BCD encoded. Whereas for
protection scheme profiles A and B the SUCI needs to be converted from
hexadecimal to ASCII.
This still needs the support for protection schemes A and B in UDM to
work.
* Initial metrics support based on Prometheus
This commit introduces initial support for metrics in open5gs.
The metrics code is added as libogsmetrics (lib/metrics/), with a well
defined opaque API to manage different types of metrics, allowing for
different implementations for different technologies to scrap the
metrics (placed as lib/metrics/<impl>/. The implementation is right now
selected at build time, in order to be able to opt-out the related dependencies
for users not interested in the features. 2 implementations are already
provided in this commit to start with:
* void: Default implementation. Empty stubs, acts as a NOOP.
* prometheus: open5gs processes become Prometheus servers, offering
states through an http server to the Prometheus scrappers. Relies on
libprom (prometheus-client-ci [1] project) to track the metrics and format
them during export, and libmicrohttpd to make the export possible through
HTTP.
[1] https://github.com/digitalocean/prometheus-client-c
The prometheus-client-c is not well maintained nowadays in upstream, and
furthermore it uses a quite peculiar mixture of build systems (autolib
on the main dir, cmake for libprom in a subdir). This makes it difficult
to have it widely available in distros, and difficult to find it if it
is installed in the system. Hence, the best is to include it as a
meson subproject like we already do for freeDiameter. An open5gs fork is
requried in order to have an extra patch adding a top-level
CMakeList.txt in order to be able to includ eit from open5gs's meson
build. Furthermore, this allows adding bugfixes to the subproject if any
are found in the future.
* [SMF] Initial metrics support
* [SMF] Add metrics at gtp_node level
* docs: Add tutorial documenting metrics with Prometheus
* [SMF] Gn: Drop unreachable return line
* [SMF] Avoid crash if Create{Session,PdpContext}Resp fails to be sent
Crash spotted in a running open5gs-smfd process, triggered by:
ERROR: ogs_gtp_sendto() failed (1:Operation not permitted) (../lib/gtp/path.c:119)
ERROR: ogs_gtp_xact_commit: Expectation `rv == OGS_OK' failed. (../lib/gtp/xact.c:730)
ERROR: smf_gtp2_send_create_session_response: Expectation `rv == OGS_OK' failed. (../src/smf/gtp-path.c:451)
FATAL: smf_gsm_state_wait_pfcp_establishment: Assertion `OGS_OK == smf_gtp2_send_create_session_response( sess, gtp_xact)' failed. (../src/smf/gsm-sm.c:676)
* [SMF] Avoid crash if Delete{Sesson,PdpContext}Resp fails to be sent
Let's simply continuing with release of the session, there's not much we
can do about it. Peer will eventually realize the conn is no longer
there.
I added four additional commands which are useful in case not using the GUI (add UE using a specific APN, add UE using a specific slice and APN, modify a slice adding an APN, modify an UE adding a new slice + APN)
Oliver Smith
Daniel Willmann
Alexander Couzens
root
Sukchan Lee
Pau Espin
Carlos Giraldo
Bostjan Meglic
mitmitmitm
Miguel
endika