In /etc/hosts, the alias name can come at the 2nd column, regardless of the recommendation. E.g. the following format is valid although not recommended cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.22.21 fastvm-rhel-7-6-21 fastvm-rhel-7-6-21.localdomain 192.168.22.22 fastvm-rhel-7-6-22 fastvm-rhel-7-6-22.localdomain 192.168.22.21 node1_hb 192.168.22.22 node2_hb So filtering out both 2nd and 3rd column for matching. Signed-off-by: Pingfan Liu <piliu(a)redhat.com&gt; --- dracut-module-setup.sh | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh index 1237896..767be0a 100755 --- a/dracut-module-setup.sh +++ b/dracut-module-setup.sh @@ -683,7 +683,8 @@ get_alias() { ips=$(hostname -I) for ip in $ips do - entries=$(grep $ip /etc/hosts | awk '{ $1=$2=""; print $0 }') + # in /etc/hosts, alias can come at the 2nd column + entries=$(grep $ip /etc/hosts | awk '{ $1=""; print $0 }') if [ $? -eq 0 ]; then alias_set="$alias_set $entries" fi -- 2.7.5

On 03/24/2020 01:31 PM, Kairui Song wrote: > On Fri, Mar 13, 2020 at 11:05 AM Pingfan Liu <piliu(a)redhat.com&gt; wrote: >> >> In /etc/hosts, the alias name can come at the 2nd column, regardless of the >> recommendation. >> >> E.g. the following format is valid although not recommended >> cat /etc/hosts >> 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 >> ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 >> 192.168.22.21 fastvm-rhel-7-6-21 fastvm-rhel-7-6-21.localdomain >> 192.168.22.22 fastvm-rhel-7-6-22 fastvm-rhel-7-6-22.localdomain >> >> 192.168.22.21 node1_hb >> 192.168.22.22 node2_hb >> >> So filtering out both 2nd and 3rd column for matching. >> >> Signed-off-by: Pingfan Liu <piliu(a)redhat.com&gt; >> --- >> dracut-module-setup.sh | 3 ++- >> 1 file changed, 2 insertions(+), 1 deletion(-) >> >> diff --git a/dracut-module-setup.sh b/dracut-module-setup.sh >> index 1237896..767be0a 100755 >> --- a/dracut-module-setup.sh >> +++ b/dracut-module-setup.sh >> @@ -683,7 +683,8 @@ get_alias() { >> ips=$(hostname -I) >> for ip in $ips >> do >> - entries=$(grep $ip /etc/hosts | awk '{ $1=$2=""; print $0 }') >> + # in /etc/hosts, alias can come at the 2nd column >> + entries=$(grep $ip /etc/hosts | awk '{ $1=""; print $0 }') >> if [ $? -eq 0 ]; then >> alias_set="$alias_set $entries" >> fi >> -- >> 2.7.5 >> > > Hi Pingfan, the commit message seems a bit confusing. > > It seems the currently code is filtering out both 2nd and 3rd column, > and after the patch, only first column (ip address) will be filtered > out, is this what the patch mean? I may misuse "filter out". What I want is to discard column one