After the upgrade of the NextCloud app from 23.0.5 to version 25.0.9 all curl commands in the docker container are not working anymore. Behaviour that I saw first was that Nextcloud News are getting no updates anymore and the NextCloud protocol shows warnings like:
https://keepassxc.org/blog/feed.xml read error : cURL error 6: getaddrinfo() thread failed to start (see https://curl.haxx.se/libcurl/c/libcurl-errors.html) for https://keepassxc.org/blog/feed.xml
I tested curl on the host and it works, but testing it from inside the container via univention-app shell nextcloud gives the same error message.
root@nextc-77545073:/var/www/html# curl https://keepassxc.org/blog/feed.xml
curl: (6) getaddrinfo() thread failed to start
I tested also in other docker containers and it works there as well and so it looks like the problem is really only with the NextCloud docker container/image.
Checking the installed version of curl shows differences between the host and the container:
xxx@yyy:~$ curl --version
curl 7.64.0 (x86_64-pc-linux-gnu) libcurl/7.64.0 OpenSSL/1.1.1n zlib/1.2.11 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.5) libssh2/1.8.0 nghttp2/1.36.0 librtmp/2.3
Release-Date: 2019-02-06
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets HTTPS-proxy PSL
root@nextc-77545073:/# curl --version
curl 7.81.0 (x86_64-pc-linux-gnu) libcurl/7.81.0 OpenSSL/3.0.2 zlib/1.2.11 brotli/1.0.9 zstd/1.4.8 libidn2/2.3.2 libpsl/0.21.0 (+libidn2/2.3.2) libssh/0.9.6/openssl/zlib nghttp2/1.43.0 librtmp/2.3 OpenLDAP/2.5.14
Release-Date: 2022-01-05
Protocols: dict file ftp ftps gopher gophers http https imap imaps ldap ldaps mqtt pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: alt-svc AsynchDNS brotli GSS-API HSTS HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP UnixSockets zstd
Following images are there:
xxx@yyy:~$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
docker.software-univention.de/onlyoffice-ds 7.4.1.1 cd546efe7f01 8 days ago 2.79GB
docker.software-univention.de/nextcloud 25.0.9-0 8f172f0eeb35 2 weeks ago 1.39GB
docker.software-univention.de/nextcloud 23.0.5-0 b1afba394816 14 months ago 1.29GB
docker.software-univention.de/bluespice 3.2.7-ucs.1 ef62ae5a2ef2 20 months ago 1.47GB
I did a lot of research but could not find a way to figure out how to fix this. (mentioned was sometimes SECCOMP, but I don’t know how to use it with univention docker image)
Does anyone have an idea how to solve this or how to dig deeper?
.