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Forbidden You don’t have permission to access /repos/ on this server.

So you get the following message when installing and configuring your HTTPD server?  Despite the right configuration you still receive the following: Forbidden You don't have permission to access /repos/ on this server.

1765328228 Cannot contact any KDC for realm

When seeing this: krb5_child.log:(Tue May 22 02:06:15 2018) [[sssd[krb5_child[1605]]]] [map_krb5_error] (0×0020): 1657: [-1765328228][Cannot contact any KDC for realm 'MDS.XYZ'] Access denied Using keyboard-interactive authentication. Password: reverse the order of your DNS hosts in /etc/resolv.conf to this: [root@cm-r01dn07 sssd]# cat /etc/resolv.conf search mds.xyz nix.mds.xyz nameserver 192.168.0.224 nameserver 192.168.0.44 nameserver 192.168.0.45 [root@cm-r01dn07 sssd]# from this: [root@cm-r01dn07 sssd]# [...]

sssd krb5_child Key table entry not found

When you get this message: May 21 00:13:31 nfs03.nix.mds.xyz [sssd[krb5_child[1822]]][1822]: Key table entry not found followed by: [[sssd[krb5_child[1752]]]] [k5c_setup_fast] (0×0020): 2628: [-1765328203][Key table entry not found] or similar, dig into the logs further to see this: (Mon May 21 00:13:33 2018) [[sssd[krb5_child[1824]]]] [find_principal_in_keytab] (0×0400): No principal matching host/nfs02.nix.mds.xyz@NIX.MDS.XYZ found in keytab. (Mon May 21 00:13:33 [...]

Saving random seed failed. / No kdump initial ramdisk found. / Failed to run mkdumprd

Kdump doesn't start? [root@mbpc-pc grub]# service kdump restart Memory for crashkernel is not reserved Please reserve memory by passing "crashkernel=X@Y" parameter to the kernel Stopping kdump:                                            [FAILED] No kdump initial ramdisk found.      [...]

NFS reply xid 3844308326 reply ERR 20: Auth Rejected Credentials (client should begin new session)

Getting this? Mounts freezing?  Keep reading: tcpdump -i eth0 -s 0 -w dump.dat tcpdump -r dump.dat |grep -Ei "psql02|nfs-c01" 02:55:48.731360 IP psql02.nix.mds.xyz.33991 > nfs-c01.nix.mds.xyz.nfs: Flags [P.], seq 1:693, ack 1, win 229, options [nop,nop,TS val 166990 ecr 5681495], length 692: NFS request xid 3844308326 688 null 02:55:48.731483 IP nfs-c01.nix.mds.xyz.nfs > psql02.nix.mds.xyz.33991: Flags [.], ack 693, [...]

rpc mount export: RPC: Unable to receive; errno = Connection refused

For the below errors: [root@psql02 log]# showmount -e nfs02 rpc mount export: RPC: Unable to receive; errno = Connection refused [root@psql02 log]# Apr 16 01:12:37 nfs02 kernel: FINAL_REJECT: IN=eth0 OUT= MAC=00:50:56:86:2d:21:00:50:56:86:3c:c7:08:00 SRC=192.168.0.124 DST=192.168.0.119 LEN=60 TOS=0×00 PREC=0×00 TTL=64 ID=44729 DF PROTO=TCP SPT=978 DPT=20048 WINDOW=29200 RES=0×00 SYN URGP=0 [root@nfs02 log]# [root@nfs02 log]# [root@nfs02 log]# [root@nfs02 log]# firewall-cmd [...]

psql: error while loading shared libraries: libpq.so.rh-postgresql95-5: cannot open shared object file: No such file or directory

Well heck: -bash-4.2$ psql psql: error while loading shared libraries: libpq.so.rh-postgresql95-5: cannot open shared object file: No such file or directory -bash-4.2$ So let's see what's going on: [root@ovirt01 ~]# find / -iname libpq.so* /usr/lib64/libpq.so.5 /usr/lib64/libpq.so.5.5 /opt/rh/rh-postgresql95/root/usr/lib64/libpq.so.rh-postgresql95-5 /opt/rh/rh-postgresql95/root/usr/lib64/libpq.so.rh-postgresql95-5.8 [root@ovirt01 ~]# So we can see it's in the lib64 path.  And within the root postgres folder, [...]

NFS reply xid reply ERR 20: Auth Invalid failure code 13 and AD logins become hung when using NFS home directories.

You get the following error message: 15:27:35.430633 IP 192.168.0.80.nfs > 192.168.0.145.843: Flags [P.], seq 29:53, ack 417, win 235, options [nop,nop,TS val 6635947 ecr 5159126], length 24: NFS reply xid 2938911306 reply ERR 20: Auth Invalid failure code 13 Checking the nfs01 / nfs02 server we see alot of the following: [2018-04-08 17:19:39.014330] E [MSGID: [...]

/usr/bin/ganesha.nfsd: /lib64/libntirpc.so.1.6: version `NTIRPC_1.6.1′ not found (required by /usr/bin/ganesha.nfsd)

What to do when you get this message below: [root@nfs01 ganesha]# systemctl status nfs-ganesha -l â nfs-ganesha.service – NFS-Ganesha file server    Loaded: loaded (/usr/lib/systemd/system/nfs-ganesha.service; enabled; vendor preset: disabled)    Active: failed (Result: exit-code) since Sun 2018-04-08 13:22:32 EDT; 1min 8s ago      Docs: http://github.com/nfs-ganesha/nfs-ganesha/wiki   Process: 2033 ExecStart=/bin/bash -c ${NUMACTL} ${NUMAOPTS} /usr/bin/ganesha.nfsd ${OPTIONS} [...]

kernel: NFS: nfs4_discover_server_trunking unhandled error -512. Exiting with error EIO and mount hangs

Mount still hangs and restarting NFS and autofs doesn't work to resolve this error below: Apr  8 12:12:46 ovirt01 systemd: Stopping Automounts filesystems on demand… Apr  8 12:12:46 ovirt01 kernel: NFS: nfs4_discover_server_trunking unhandled error -512. Exiting with error EIO Apr  8 12:12:47 ovirt01 automount[1487]: umount_autofs_indirect: ask umount returned busy /n Apr  8 12:12:48 ovirt01 ovsdb-server: [...]


     
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