Hello,

Thank you for your reply,

Not sure that changing the timeout will change anything : 

sysadmin@vMAAS01:~$ ps -eLf | grep juju
sysadmin   4104   3747   4104  0    7 19:01 pts/0    00:00:00 juju bootstrap maas juju-ctrl --config image-stream=daily --config enable-os-upgrade=false --default-model default --to star-quail --bootstrap-series=xenial --credential admin --debug --config bootstrap-timeout=10000
sysadmin   4104   3747   4105  0    7 19:01 pts/0    00:00:00 juju bootstrap maas juju-ctrl --config image-stream=daily --config enable-os-upgrade=false --default-model default --to star-quail --bootstrap-series=xenial --credential admin --debug --config bootstrap-timeout=10000
sysadmin   4104   3747   4106  0    7 19:01 pts/0    00:00:00 juju bootstrap maas juju-ctrl --config image-stream=daily --config enable-os-upgrade=false --default-model default --to star-quail --bootstrap-series=xenial --credential admin --debug --config bootstrap-timeout=10000
sysadmin   4104   3747   4107  0    7 19:01 pts/0    00:00:00 juju bootstrap maas juju-ctrl --config image-stream=daily --config enable-os-upgrade=false --default-model default --to star-quail --bootstrap-series=xenial --credential admin --debug --config bootstrap-timeout=10000
sysadmin   4104   3747   4108  0    7 19:01 pts/0    00:00:00 juju bootstrap maas juju-ctrl --config image-stream=daily --config enable-os-upgrade=false --default-model default --to star-quail --bootstrap-series=xenial --credential admin --debug --config bootstrap-timeout=10000
sysadmin   4104   3747   4109  2    7 19:01 pts/0    00:00:00 juju bootstrap maas juju-ctrl --config image-stream=daily --config enable-os-upgrade=false --default-model default --to star-quail --bootstrap-series=xenial --credential admin --debug --config bootstrap-timeout=10000
sysadmin   4104   3747   4110  0    7 19:01 pts/0    00:00:00 juju bootstrap maas juju-ctrl --config image-stream=daily --config enable-os-upgrade=false --default-model default --to star-quail --bootstrap-series=xenial --credential admin --debug --config bootstrap-timeout=10000
sysadmin   4216   3838   4216  0    1 19:02 pts/1    00:00:00 grep --color=auto juju

sysadmin@vMAAS01:~$ sudo strace -p 4104
connect(3, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("192.168.100.10")}, 16) = -1 EINPROGRESS (Operation now in progress)
epoll_ctl(4, EPOLL_CTL_ADD, 3, {EPOLLIN|EPOLLOUT|EPOLLRDHUP|EPOLLET, {u32=1933115328, u64=139644204810176}}) = 0
futex(0x3e533e8, FUTEX_WAIT, 0, NULL)   = 0
epoll_wait(4, [], 128, 0)               = 0
futex(0x3e533e8, FUTEX_WAIT, 0, NULL)   = 0
epoll_wait(4, [], 128, 0)               = 0
epoll_wait(4, [{EPOLLOUT, {u32=1933115328, u64=139644204810176}}], 128, -1) = 1
futex(0x3e52830, FUTEX_WAKE, 1)         = 1
futex(0x3e52770, FUTEX_WAKE, 1)         = 1
getsockopt(3, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
getsockname(3, {sa_family=AF_INET, sin_port=htons(50944), sin_addr=inet_addr("192.168.100.10")}, [16]) = 0
getpeername(3, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("192.168.100.10")}, [16]) = 0
setsockopt(3, SOL_TCP, TCP_NODELAY, [1], 4) = 0
futex(0xc820029108, FUTEX_WAKE, 1)      = 1
write(3, "GET /MAAS/api/2.0/machines/?agen"..., 517) = 517
futex(0xc820028d08, FUTEX_WAKE, 1)      = 1
futex(0x3e533e8, FUTEX_WAIT, 0, NULL)   = 0
futex(0x3e533e8, FUTEX_WAIT, 0, NULL)   = 0
futex(0x3e533e8, FUTEX_WAIT, 0, NULL)   = 0
futex(0x3e533e8, FUTEX_WAIT, 0, NULL

sysadmin@vMAAS01:~$ sudo strace -p 3747
strace: Process 3747 attached
wait4(-1, 

=> Both processes are waiting for something, but what ? That is the question...

I don't know in which direction pushing my investigation.

Any idea ? 

write(3, "GET /MAAS/api/2.0/machines/?agen"..., 517) = 517
futex(0xc820028d08, FUTEX_WAKE, 1)      = 1
futex(0x3e533e8, FUTEX_WAIT, 0, NULL)   = 0
futex(0x3e533e8, FUTEX_WAIT, 0, NULL)   = 0
futex(0x3e533e8, FUTEX_WAIT, 0, NULL)   = -1 EAGAIN (Resource temporarily unavailable)

Any credential problem ? No Idea.

B/R