I had started with a cumin command over * (all nodes) to separate all our machines into groupings based on a certain command output. Then I took one of the output nodelists from that command and tried to paste it back as an input nodelist for a further command on one sub-group, but the (fed-back from outputs) nodelist was too large, resulting in an HTTP 414 error:
bblack@neodymium:~$ sudo cumin 'bast[1001,3002].wikimedia.org,californium.wikimedia.org,chromium.wikimedia.org,conf[1001-1003].eqiad.wmnet,copper.eqiad.wmnet,cp[3004-3008,3010].esams.wmnet,cp1008.wikimedia.org,dataset1001.wikimedia.org,db[2010-2012,2016-2019,2023,2028-2030].codfw.wmnet,db[1001,1009,1011,1015-1016,1018,1020-1024,1026,1028-1031,1033-1039,1041,1043-1050].eqiad.wmnet,dbproxy[1001-1011].eqiad.wmnet,eeden.wikimedia.org,es[2001-2004].codfw.wmnet,eventlog2001.codfw.wmnet,graphite1002.eqiad.wmnet,hafnium.eqiad.wmnet,helium.eqiad.wmnet,hydrogen.wikimedia.org,iron.wikimedia.org,labcontrol[1001-1002].wikimedia.org,labnet[1001-1002].eqiad.wmnet,labnodepool1001.eqiad.wmnet,labsdb[1001,1003-1007].eqiad.wmnet,labstore[2001,2003-2004].codfw.wmnet,labstore1003.eqiad.wmnet,labtestneutron2001.codfw.wmnet,labtestservices2001.wikimedia.org,labtestvirt2002.codfw.wmnet,lvs[3001-3004].esams.wmnet,lvs[1001-1006].wikimedia.org,maerlant.wikimedia.org,maps-test[2001-2004].codfw.wmnet,mc[1001-1016].eqiad.wmnet,ms1001.wikimedia.org,ms-be[3001-3004].esams.wmnet,ms-fe[3001-3002].esams.wmnet,multatuli.wikimedia.org,mw2017.codfw.wmnet,mw[1259-1260].eqiad.wmnet,nescio.wikimedia.org,netmon1001.wikimedia.org,oxygen.eqiad.wmnet,poolcounter1002.eqiad.wmnet,radium.wikimedia.org,rcs[1001-1002].eqiad.wmnet,rdb[1007-1008].eqiad.wmnet,rhenium.wikimedia.org,rhodium.eqiad.wmnet,ruthenium.eqiad.wmnet,silver.wikimedia.org,stat1002.eqiad.wmnet,tungsten.eqiad.wmnet,uranium.wikimedia.org' 'ls /sys/devices/system/node/node*' Caught HTTPError exception: 414 Client Error: Request-URI Too Large for url: https://nitrogen.eqiad.wmnet:443/v3/nodes?query=%5B%22or%22%2C+%5B%22%3D%22%2C+%22name%22%2C+%22bast1001.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22bast3002.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22californium.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22chromium.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22conf1001.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22conf1002.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22conf1003.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22copper.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22cp3004.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22cp3005.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22cp3006.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22cp3007.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22cp3008.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22cp3010.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22cp1008.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dataset1001.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2010.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2011.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2012.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2016.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2017.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2018.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2019.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2023.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2028.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2029.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db2030.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1001.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1009.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1011.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1015.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1016.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1018.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1020.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1021.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1022.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1023.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1024.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1026.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1028.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1029.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1030.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1031.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1033.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1034.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1035.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1036.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1037.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1038.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1039.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1041.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1043.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1044.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1045.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1046.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1047.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1048.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1049.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22db1050.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1001.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1002.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1003.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1004.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1005.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1006.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1007.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1008.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1009.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1010.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22dbproxy1011.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22eeden.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22es2001.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22es2002.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22es2003.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22es2004.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22eventlog2001.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22graphite1002.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22hafnium.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22helium.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22hydrogen.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22iron.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labcontrol1001.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labcontrol1002.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labnet1001.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labnet1002.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labnodepool1001.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labsdb1001.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labsdb1003.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labsdb1004.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labsdb1005.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labsdb1006.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labsdb1007.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labstore2001.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labstore2003.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labstore2004.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labstore1003.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labtestneutron2001.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labtestservices2001.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22labtestvirt2002.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs3001.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs3002.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs3003.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs3004.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs1001.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs1002.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs1003.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs1004.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs1005.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22lvs1006.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22maerlant.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22maps-test2001.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22maps-test2002.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22maps-test2003.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22maps-test2004.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1001.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1002.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1003.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1004.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1005.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1006.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1007.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1008.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1009.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1010.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1011.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1012.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1013.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1014.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1015.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mc1016.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22ms1001.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22ms-be3001.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22ms-be3002.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22ms-be3003.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22ms-be3004.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22ms-fe3001.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22ms-fe3002.esams.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22multatuli.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mw2017.codfw.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mw1259.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22mw1260.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22nescio.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22netmon1001.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22oxygen.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22poolcounter1002.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22radium.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22rcs1001.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22rcs1002.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22rdb1007.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22rdb1008.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22rhenium.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22rhodium.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22ruthenium.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22silver.wikimedia.org%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22stat1002.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22tungsten.eqiad.wmnet%22%5D%2C+%5B%22%3D%22%2C+%22name%22%2C+%22uranium.wikimedia.org%22%5D%5D