Replace restart with SIGHUP This signal will force the dnsmasq daemon to reload the configuration directly. This is much faster than restarting the daemon, which result in a much smaller window during which no dns server is available.
Tested by using the replaced version of edithosts.sh on a running vrouter causing dns problems. Project: http://git-wip-us.apache.org/repos/asf/cloudstack/repo Commit: http://git-wip-us.apache.org/repos/asf/cloudstack/commit/79488f1e Tree: http://git-wip-us.apache.org/repos/asf/cloudstack/tree/79488f1e Diff: http://git-wip-us.apache.org/repos/asf/cloudstack/diff/79488f1e Branch: refs/heads/internallb Commit: 79488f1efd2e0f21515d888ccb78978ee7b7a9ba Parents: 23a2500 Author: Hugo Trippaers <htrippa...@schubergphilis.com> Authored: Sun Apr 7 21:46:38 2013 +0200 Committer: Alena Prokharchyk <alena.prokharc...@citrix.com> Committed: Mon Apr 8 15:23:55 2013 -0700 ---------------------------------------------------------------------- patches/systemvm/debian/config/root/edithosts.sh | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/cloudstack/blob/79488f1e/patches/systemvm/debian/config/root/edithosts.sh ---------------------------------------------------------------------- diff --git a/patches/systemvm/debian/config/root/edithosts.sh b/patches/systemvm/debian/config/root/edithosts.sh index 9f21f20..1f98fbf 100755 --- a/patches/systemvm/debian/config/root/edithosts.sh +++ b/patches/systemvm/debian/config/root/edithosts.sh @@ -200,7 +200,8 @@ fi pid=$(pidof dnsmasq) if [ "$pid" != "" ] then - service dnsmasq restart + #service dnsmasq restart + kill -HUP $pid else if [ $no_redundant -eq 1 ] then
