Difference between revisions of "Quick solve"
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===Auto-start instances=== | ===Auto-start instances=== | ||
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| + | To modify an existing container so that it restarts automatically: | ||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
Latest revision as of 06:16, 15 August 2018
Introduction
This is a selection of problems that can be quickly solved.
Docker
Auto-start instances
To modify an existing container so that it restarts automatically:
docker update --restart=always <container_name>
Ubuntu
Too many network interfaces
If the following appears in /var/log/syslog:
avahi-daemon[1113]: IP_ADD_MEMBERSHIP failed: No buffer space available
It's probably because you've too many network interfaces. This can easily happen with docker. You can check your current configured maximum using this:
sysctl net.ipv4.igmp_max_memberships
You can increase that amount using the following command:
sysctl -w net.ipv4.igmp_max_memberships=50
