# Start pbs does not work **URL:** \ **Category:** Users/Site Administrators\ **Created:** [May 15, 2020, 3:46am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117 "2020-05-15T03:46:04Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![nekcorp](https://avatars.discourse-cdn.com/v4/letter/n/a587f6/32.png) [@nekcorp](https://community.openpbs.org/u/nekcorp)\ **Post date:** [May 15, 2020, 3:46am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/1 "2020-05-15T03:46:04Z")
Hi, i need your help, when I would like to start pbs > $ sudo /etc/init.d/pbs start I have the message below : ``` Starting PBS /opt/pbs/sbin/pbs_comm ready (pid=6677), Proxy Name:centos7-1.home:17001, Threads:4 PBS comm pbs_mom: addclient_byname, host centos7 not found pbs_mom: parse_config, config[1] command "$clienthost centos7" failed, aborting /opt/pbs/sbin/pbs_mom: config file(s) parsing failed pbs_mom startup failed, exit 1 aborting. ``` Someone can help me to understand what’s happened ? Thanks a lot. ---
**Author:** ![riyazhakki](https://avatars.discourse-cdn.com/v4/letter/r/ba9def/32.png) [@riyazhakki](https://community.openpbs.org/u/riyazhakki)\ **Post date:** [May 15, 2020, 5:50am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/2 "2020-05-15T05:50:26Z")
Hi @nekcorp, Looks like provided value (‘centos7’) for $clienthost in /var/spool/pbs/mom\_priv/config is not a valid hostname. pbs\_mom is getting error on gethostbyname(3) ---
**Author:** ![adarsh](https://avatars.discourse-cdn.com/v4/letter/a/f07891/32.png) [@adarsh](https://community.openpbs.org/u/adarsh)\ **Post date:** [May 15, 2020, 5:52am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/3 "2020-05-15T05:52:04Z")
The issue is hostname resolution - static IP and hostname (resolvable) is required. - is the hostname “centos7” resolvable to a static IP ? Please share the output of : 1. cat /etc/pbs.conf 2. cat /etc/hosts 3. ifconfig 4. ping -c 5 centos7 ---
**Author:** ![nekcorp](https://avatars.discourse-cdn.com/v4/letter/n/a587f6/32.png) [@nekcorp](https://community.openpbs.org/u/nekcorp)\ **Post date:** [May 15, 2020, 6:35am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/4 "2020-05-15T06:35:53Z")
Hi @riyazhakki In the /var/spool/pbs/mom\_priv/config I have : ``` $clienthost centos7 $restrict_user_maxsysid 999 ``` Hi @adarsh 1. cat /etc/pbs.conf > PBS\_SERVER=centos7-1.home > PBS\_START\_SERVER=1 > PBS\_START\_SCHED=1 > PBS\_START\_COMM=1 > PBS\_START\_MOM=1 > PBS\_EXEC=/opt/pbs > PBS\_HOME=/var/spool/pbs > PBS\_CORE\_LIMIT=unlimited > PBS\_SCP=/bin/scp 1. cat /etc/hosts > 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 > ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 > 192.168.1.49 centos7-1.home centos7-1 1. ifconfig > enp9s0: flags=4163\ mtu 1500 > inet 192.168.1.49 netmask 255.255.255.0 broadcast 192.168.1.255 > inet6 fe80::f4b9:e141:9e3d:226e prefixlen 64 scopeid 0x20 > inet6 2a01:cb19:884d:4400:7986:37ee:b6b1:d910 prefixlen 64 scopeid 0x0 > ether 00:21:70:70:de:25 txqueuelen 1000 (Ethernet) > RX packets 2785240 bytes 1432119255 (1.3 GiB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 3286872 bytes 740472676 (706.1 MiB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 > device interrupt 17 > > lo: flags=73\ mtu 65536 > inet 127.0.0.1 netmask 255.0.0.0 > inet6 ::1 prefixlen 128 scopeid 0x10 > loop txqueuelen 1000 (Boucle locale) > RX packets 520350 bytes 14971390380 (13.9 GiB) > RX errors 0 dropped 0 overruns 0 frame 0 > TX packets 520350 bytes 14971390380 (13.9 GiB) > TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 1. ping -c 5 centos7 > ping: centos7: Name or service not known ---
**Author:** ![adarsh](https://avatars.discourse-cdn.com/v4/letter/a/f07891/32.png) [@adarsh](https://community.openpbs.org/u/adarsh)\ **Post date:** [May 15, 2020, 6:47am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/5 "2020-05-15T06:47:46Z")
> [@nekcorp](#): > > > 192.168.1.49 centos7-1.home centos7-1 Thank you, please update the above line in /etc/hosts to `192.168.1.49 centos7-1.home centos7-1 centos7` Then start the pbs service. ---
**Author:** ![nekcorp](https://avatars.discourse-cdn.com/v4/letter/n/a587f6/32.png) [@nekcorp](https://community.openpbs.org/u/nekcorp)\ **Post date:** [May 15, 2020, 6:54am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/6 "2020-05-15T06:54:02Z")
~~I~~~~ have ~~~~update~~~~ , ~~~~ and ~~~~then~~~~ when ~~~~I~~~~ start ~~~~pbs~~~~ service ~~~~I~~~~ have ~~~~this~~~~ message ~~: > ~~Starting~~~~ PBS~~ > ~~PBS~~~~ comm ~~~~already~~~~ running ~~~~.~~ > ~~PBS~~~~ mom~~ > ~~Creating~~~~ usage ~~~~database~~~~ for ~~~~fairshare~~~~.~~ > ~~PBS~~~~ sched~~ > ~~Connecting~~~~ to ~~~~PBS~~~~ dataservice ~~~~…~~~~ connected ~~~~to~~~~ PBS ~~~~dataservice~~~~ @ ~~~~centos7~~~~ - ~~~~1~~~~. ~~~~home~~ > ~~Licenses~~~~ valid ~~~~for~~~~ 10000000 ~~~~Floating~~~~ hosts~~ > ~~Server~~~~ @ ~~~~centos7~~~~ - ~~~~1~~~~ : ~~~~ setup\_nodes ~~~~,~~ ~~could~~~~ not ~~~~create~~~~ node ~~~~“~~~~ centos7 ~~~~”~~~~ , ~~~~ error ~~~~=~~ ~~15062~~ > ~~PBS~~~~ server~~ ~~What~~~~ is ~~~~the~~~~ error ~~~~=~~~~ 15062~~ ---
**Author:** ![adarsh](https://avatars.discourse-cdn.com/v4/letter/a/f07891/32.png) [@adarsh](https://community.openpbs.org/u/adarsh)\ **Post date:** [May 15, 2020, 7:06am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/7 "2020-05-15T07:06:25Z")
Thank you , please share us the output of the below commands [source /etc/profile.d/pbs.sh] - ps -ef | grep pbs\_ - pbsnodes -aSj - [You have to update /etc/pbs.conf against PBS\_SERVER=centos7 and then restart the PBS Services] ---
**Author:** ![nekcorp](https://avatars.discourse-cdn.com/v4/letter/n/a587f6/32.png) [@nekcorp](https://community.openpbs.org/u/nekcorp)\ **Post date:** [May 15, 2020, 7:52am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/8 "2020-05-15T07:52:12Z")
` ps -ef | grep pbs_` > root 2027 1 0 08:51 ? 00:00:00 /opt/pbs/sbin/pbs\_mom > root 2039 1 0 08:51 ? 00:00:00 /opt/pbs/sbin/pbs\_sched > root 2383 1 0 08:51 ? 00:00:01 /opt/pbs/sbin/pbs\_ds\_monitor monitor > postgres 2476 2444 0 08:51 ? 00:00:00 postgres: postgres pbs\_datastore 192.168.1.49(47432) idle > root 2497 1 0 08:51 ? 00:00:00 /opt/pbs/sbin/pbs\_server.bin > root 11967 1 0 05:49 ? 00:00:00 /opt/pbs/sbin/pbs\_comm > nekcorp 25934 22372 0 09:46 pts/4 00:00:00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn --exclude-dir=.idea --exclude-dir=.tox pbs\_ `$ pbsnodes -aSj` `centos7 down 0 0 0 0kb/0kb 1/1 0/0 0/0 --` When I restart PBS Services all it is ok now : > Starting PBS > PBS comm already running. > PBS mom already running. > PBS scheduler already running. > PBS Server already running. But when I submit a job it is stays in queue. ---
**Author:** ![adarsh](https://avatars.discourse-cdn.com/v4/letter/a/f07891/32.png) [@adarsh](https://community.openpbs.org/u/adarsh)\ **Post date:** [May 16, 2020, 6:59am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/9 "2020-05-16T06:59:06Z")
> [@nekcorp](#): > > But when I submit a job it is stays in queue. Reason: the compute node (centos7) is down , hence job is in the queue. 1. please share the output of pbsnodes -av 2. selinux disabled and system needs to be reboot after this 3. firewall disabled 4. ports 15001 to 15009 and 17001 should not be blocked 5. qmgr -c “d n centos7” 6. qmgr -c “c n centos7” 7. qmgr -c “s s scheduling = t” 8. please share the output of pbsnodes -av and qstat -answ1 ---
**Author:** ![nekcorp](https://avatars.discourse-cdn.com/v4/letter/n/a587f6/32.png) [@nekcorp](https://community.openpbs.org/u/nekcorp)\ **Post date:** [May 17, 2020, 3:44am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/10 "2020-05-17T03:44:48Z")
Hi @adarsh Below the return for each command : `1. pbsnodes -av` > centos7 > Mom = centos7.home > ntype = PBS > state = down,unresolvable > pcpus = 1 > resources\_available.host = centos7 > resources\_available.ncpus = 1 > resources\_available.vnode = centos7 > resources\_assigned.accelerator\_memory = 0kb > resources\_assigned.hbmem = 0kb > resources\_assigned.mem = 0kb > resources\_assigned.naccelerators = 0 > resources\_assigned.ncpus = 0 > resources\_assigned.vmem = 0kb > resv\_enable = True > sharing = default\_shared > last\_state\_change\_time = Fri May 15 10:07:49 2020 `2. $ sestatus` > SELinux status: disabled `3. $ systemctl status firewalld` > ● firewalld.service - firewalld - dynamic firewall daemon > Loaded: loaded (/usr/lib/systemd/system/firewalld.service; enabled; vendor preset: enabled) > Active: inactive (dead) since dim. 2020-05-17 05:30:49 CEST; 51s ago > Docs: man:firewalld(1) > Process: 3859 ExecStart=/usr/sbin/firewalld --nofork --nopid $FIREWALLD\_ARGS (code=exited, status=0/SUCCESS) > Main PID: 3859 (code=exited, status=0/SUCCESS) `3. $ nmap -sT -O localhost` > Starting Nmap 6.40 ( [http://nmap.org](http://nmap.org) ) at 2020-05-17 05:36 CEST > Nmap scan report for localhost (127.0.0.1) > Host is up (0.00026s latency). > Other addresses for localhost (not scanned): 127.0.0.1 > Not shown: 990 closed ports > PORT STATE SERVICE > 22/tcp open ssh > 25/tcp open smtp > 80/tcp open http > 111/tcp open rpcbind > 631/tcp open ipp > 3306/tcp open mysql > 5432/tcp open postgresql > 15002/tcp open unknown > 15003/tcp open unknown > 15004/tcp open unknown > Device type: general purpose > Running: Linux 3.X > OS CPE: cpe:/o:linux:linux\_kernel:3 > OS details: Linux 3.7 - 3.9 > Network Distance: 0 hops > > OS detection performed. Please report any incorrect results at [Nmap OS/Service Fingerprint and Correction Submission Page](http://nmap.org/submit/) . > Nmap done: 1 IP address (1 host up) scanned in 2.85 seconds `4. $ qmgr -c “d n centos7”` > qmgr obj=centos7 svr=default: Unauthorized Request > qmgr: Error (15007) returned from server `5. $ qmgr -c “c n centos7”` > qmgr obj=centos7 svr=default: Unauthorized Request > qmgr: Error (15007) returned from server `6. $ qmgr -c “s s scheduling = t”` > qmgr obj= svr=default: Unauthorized Request > qmgr: Error (15007) returned from server `7. qstat -answ1` ``` 142.centos7 nekcorp workq PYTHON -- 1 1 -- -- Q -- -- Not Running: Not enough free nodes available ``` Thanks for your help ---
**Author:** ![adarsh](https://avatars.discourse-cdn.com/v4/letter/a/f07891/32.png) [@adarsh](https://community.openpbs.org/u/adarsh)\ **Post date:** [May 17, 2020, 7:38am UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/11 "2020-05-17T07:38:58Z")
Thank you for the information. Please refer the PBS Pro admin guide [https://www.altair.com/pdfs/pbsworks/PBS19.2.3\_BigBook.pdf](https://www.altair.com/pdfs/pbsworks/PBS19.2.3_BigBook.pdf) on the below section 8.5.1.1 Events Logged at Event Class 128 (0x0080) Please try deleting the node using qmgr , it will log messages in the $PBS\_HOME/server\_logs/YYYYMMDD Please share the server\_logs , it will lead us to the issue. ---
**Author:** ![alexis.cousein](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.openpbs.org/alexis.cousein/32/265_2.png) [@alexis.cousein](https://community.openpbs.org/u/alexis.cousein)\ **Post date:** [May 21, 2020, 2:09pm UTC](https://community.openpbs.org/t/start-pbs-does-not-work/2117/12 "2020-05-21T14:09:20Z")
It seems that the canonicalized hostname keeps changing. The server sets the administrators to root on the canonical name of the hostname when you set things up. Since you now get “unauthorized request”, the qmgr commands no longer seem to come from the address that name is bound to – possibly because that name is no longer resolvable because you changed things (is the host supposed to be “centos7” or “centos7-1”? Decide once and for all…) Ditto for your node: centos7 Mom = centos7.home You created the node by passing the name “centos”. BTW: this name MUST match the output of “hostname” or your hooks won’t work well. It resolved it to an IP address, and reached a MoM. MoM sent back a message, and the IP address it gave resolved to centos7.home, but this name _currently_ does not map to an IP address. I bet that now centos7-1.home exists but not centos7.home. In other words: stick to one canonical name for each IP address and don’t change it. Make sure that /etc/nsswitch.conf has “files” first for the hosts map, and then control your IP/name translations from there (the canonicalized hostname is always the first entry). Make sure names that you use only appear on _one_ line (do not be tempted to add e.g. “centos7” to two different lines, because that will confuse a lot of software since your canonicalisation is then ambiguous). How you get _out_ of this conundrum indeed depends on what you see in the logs and what the output of qmgr -c “print server” is.