List of AL2023 Reserved Users - Amazon Linux 2023
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List of AL2023 Reserved Users

User name UID
root 0
bin 1
daemon 2
adm 3
lp 4
sync 5
shutdown 6
halt 7
mail 8
operator 11
games 12
ftp 14
squid 23
named 25
postgres 26
mysql 27
nscd 28
nscd 28
rpcuser 29
rpc 32
mailnull 47
apache 48
smmsp 51
tomcat 53
ldap 55
tss 59
nslcd 65
avahi 70
tcpdump 72
sshd 74
radvd 75
dbus 81
postfix 89
dovecot 97
stapusr 156
stapsys 157
stapdev 158
avahi-autoipd 170
pulse 171
rtkit 172
sanlock 179
systemd-network 192
systemd-resolve 193
uuidd 961
stap-server 962
systemd-journal-remote 963
redis6 970
pesign 971
smtpq 972
smtpd 973
nginx 974
munge 975
memcached 976
sphinx 977
haproxy 978
flatpak 979
debuginfod 980
dovenull 981
dnsmasq 982
unbound 983
clamscan 984
clamilt 985
clamupdate 986
colord 987
ods 988
aws-kinesis-agent-user 989
saslauth 990
cwagent 991
polkitd 992
ec2-instance-connect 993
chrony 994
systemd-timesync 995
systemd-coredump 996
libstoragemgmt 997
systemd-oom 999
ec2-user 1000
nobody 65534

Listed by Name

User name UID
adm 3
apache 48
avahi 70
avahi-autoipd 170
aws-kinesis-agent-user 989
bin 1
chrony 994
clamilt 985
clamscan 984
clamupdate 986
colord 987
cwagent 991
daemon 2
dbus 81
debuginfod 980
dnsmasq 982
dovecot 97
dovenull 981
ec2-instance-connect 993
ec2-user 1000
flatpak 979
ftp 14
games 12
halt 7
haproxy 978
ldap 55
libstoragemgmt 997
lp 4
mail 8
mailnull 47
memcached 976
munge 975
mysql 27
named 25
nginx 974
nobody 65534
nscd 28
nscd 28
nslcd 65
ods 988
operator 11
pesign 971
polkitd 992
postfix 89
postgres 26
pulse 171
radvd 75
redis6 970
root 0
rpc 32
rpcuser 29
rtkit 172
sanlock 179
saslauth 990
shutdown 6
smmsp 51
smtpd 973
smtpq 972
sphinx 977
squid 23
sshd 74
stap-server 962
stapdev 158
stapsys 157
stapusr 156
sync 5
systemd-coredump 996
systemd-journal-remote 963
systemd-network 192
systemd-oom 999
systemd-resolve 193
systemd-timesync 995
tcpdump 72
tomcat 53
tss 59
unbound 983
uuidd 961