Collaborative Editing isn't working when using a Podman container
Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.
Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.
*Except Fisheye and Crucible
Summary
When launching a container for Confluence using Podman, Collaborative Editing doesn't work. Instead, when creating a new page, we are presented to a endless spinning wheel.
The container was launched using the following command line:
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podman run -d --name <container_name> -p 8090:8090 -p 8091:8091 -v <data_volume>:/var/atlassian/application-data/confluence <image>
Environment
Confluence Server or Data Center 7.1.0+
Podman
Diagnosis
In the application logs we can see the following error messages:
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2021-05-04 14:30:29,874 WARN [lifecycle:thread-16] [plugins.synchrony.bootstrap.SynchronyInteropBootstrap] onStart An exception occurred while waiting for Synchrony to start: java.lang.UnsatisfiedLinkError: /home/confluence/.cache/JNA/temp/jna12881934674336678335.tmp: /home/confluence/.cache/JNA/temp/jna12881934674336678335.tmp: failed to map segment from shared object: Operation not permitted
2020-03-20 14:47:11,572 ERROR [Long running task: EnableTask] [confluence.util.longrunning.ConfluenceAbstractLongRunningTask] run Long running task "EnableTask" failed to run.
-- url: /confluence/rest/synchrony-interop/enable | referer: https://confluence.domain.com/confluence/admin/confluence-collaborative-editor-plugin/configure.action | traceId: 20f1129098170d20 | userName: admin_user
java.lang.NoClassDefFoundError: Could not initialize class oshi.jna.platform.linux.Libc
...
2021-05-04 14:53:09,183 ERROR [diagnostics-os-thread] [hardware.platform.linux.LinuxGlobalMemory] <init> Failed to get mem_unit from sysinfo. {}
java.lang.NoClassDefFoundError: Could not initialize class com.sun.jna.platform.linux.LibC$Sysinfo
Cause
This behavior is related to the Bug CONFSERVER-59815 - Synchrony not starting. Fails with error "Failed to get mem_unit from sysinfo" and also described in the KB article Synchrony startup fails with "Failed to get mem_unit from sysinfo" error.
In this particular case, we are using a Podman container to launch Confluence. However, by default, Podman always mount volumes with noexec permission, as described in https://github.com/containers/podman/issues/4318
Solution
Modify the command line that launches the container to add the exec permission over the mounted volume - as for example:
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podman run -d --name <container_name> -p 8090:8090 -p 8091:8091 -v <data_volume>:/var/atlassian/application-data/confluence:exec <image>Was this helpful?