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Prevent internal DNS routing issues when domain used as hostname #817

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Prevent internal DNS routing issues when domain used as hostname #817

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12 changes: 12 additions & 0 deletions bbb-install.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -955,6 +955,18 @@ install_greenlight_v3(){
# Preparing and checking the environment.
say "preparing and checking the environment to install/update greenlight-v3..."

# Check for potential DNS resolution conflicts
# See https://github.com/bigbluebutton/greenlight/issues/6174
if grep -qE "^(127\.[0-9.]+\.[0-9]+\.[0-9]+|::1)[[:space:]]+.*$HOST" /etc/hosts; then
err "Hosts configuration issue detected: Your domain '$HOST' is mapped to a loopback address in /etc/hosts.
This is known to cause connectivity issues between Greenlight and the BigBlueButton API (see Greenlight issue #6174).
WARNING: This entry may be added automatically by cloud providers.
To fix this, you have two options:
1. Edit, comment or remove the affected line in /etc/hosts
2. Disable reading '/etc/hosts' by adding 'ReadEtcHosts=no' to '/etc/systemd/resolved.conf' and restart systemd-resolved
Please apply one of these workaround, then restart the installation script."
fi

if [ ! -d $GL3_DIR ]; then
mkdir -p $GL3_DIR && say "created $GL3_DIR"
fi
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