Archive for the ‘Troubleshooting’ Category

Problem  : – samba is not accessible. you might not have permission to use this network resource

why it happens: –  Windows machine still pointing older samba shares hence you got above issue . Need to be clear the samba cache

FIX :-  Need to be clear the samba cache

Open command line console (menu start -> run -> cmd (ctrl + shift +enter will open with Administrator privileges))
>net use
>net use \\address_ip\share /delete
>net use \\\photos /delete


[Errno 14] curl#7 – “Failed connect to XX.XX.XX.XX21; No route to host”

disable iptables in Yum server it will work

[root@rhel7 ~]# iptables -F
[root@rhel7 ~]# iptables -L


ftp://xx.xx.xx.xx/pub/softwareupdate/repodata/repomd.xml: [Errno 14] FTP Error 55 0 – Given file does not exist

[root@rhel7 ~]# getenforce

disable SELINUX in Yum server side it will work

[root@rhel7 ~]# getenforce


while deploying VCSA from Linux environment to ESXi host check below condition are correct on your system.

  • DNS server should be needed in Linux machine
  • /etct/hosts entry should have esxi and vcsa DNS name entry in Linux machine
  • in the esxi side means where you are deploying esxi from there nslookup sholud work in ESXi
  • in /etct/resolv.conf entry should have only one DNS server. esxi should not have multiple entry like below.

in the above screen shot /etc/resolv.conf have both Ipv4 and IPv6. Actually in this case automatically ipv6 added by some other dhcp in the same network. is actual dns entry rest added by DNS name server because same network multiple dhcp server is running . remove that entry if saw in /etc/resolv.conf.


Solution :

TFTP open time out because server not able to reach tftp server.  If you added iptables rule for tftp, dhcpd and http server. Add the rules for this server also and re-trigger the same





while doing pxe boot of any VM or server we will give mac address under this path /tftpboot/linux-install/pxelinux.cfg that time if u gave Upper case mac address as below  it will fail

lrwxrwxrwx 1 root root  10 Feb 20 07:32 01-00-50-A6-9C-CE-E7 -> vm68
lrwxrwxrwx 1 root root  10 Feb 20 07:32 01-00-50-A6-9C-C1-C7 -> vm19

change MAC address to lower case as below it work 🙂 🙂 🙂

lrwxrwxrwx 1 root root  10 Feb 20 07:32 01-00-50-a6-9c-ce-e7 -> vm68
lrwxrwxrwx 1 root root  10 Feb 20 07:32 01-00-50-a6-9c-c1-c7 -> vm19


[root@nagios ~]# pvcreate /dev/sdb3
Device /dev/sdb3 not found (or ignored by filtering).

Fix : kernel partition table  not  synced /dev/sdb3 partition so you got a above error

#init 6 (not recommended)

#partx -av /dev/sdb