Operators name: Tanaka.K, Hirata
Shift time: 00-08(JST)
Summary:
Check Items:VAC,CRY,TEMP had no problems.
0:00 OBSERVING from the previous shift time
0:11 LOCK LOSS (0:04TongaM5.8?) There were many earthquakes.
1:28 OBSERVING (recovered automatically)
1:44 LOCK LOSS (1:34Northern Mariana IslandM4.9)
2:39 OBSERVING (recovered automatically)
5:55 LOCK LOSS (5:52HawaiiM2.5)There were many earthquakes.
7:53 OBSERVING (recovered automatically)
8:00 OBSERVING
During this shift on Mitaka control room, around 0:50 - 0:56?, Maybe Mitaka campus internet connection may have been stopped. Some MEDM screens became white, zoom connection was stopped, and my PC couldn't access internet. I contacted K.Tanaka-san by slack. Ikeda-san and I couldn't find any information about maintenance or trouble for Mitaka internet connection so far.
We checked with NAOJ's network support team about the connecting node on the Mitaka side of SINET, and found that Mitaka's SINET connection was made at the Shinagawa node.
The Shinagawa node was undergoing maintenance on the same day, which may have affected the connection.
We also checked with NAOJ's network support team and received the same response.
It would be better to check the maintenance dates and times for both the Shinagawa and Kamioka nodes when scheduling shifts in the future,
2023-05-15post-16791
Date: Monday, 6/19/2023 0:00 - 6:00
Target nodes: Shinagawa (Tokyo), Nagoya (Aichi), Okazaki (Aichi), Otsu (Shiga), Okayama (Okayama)
maintenance_202306
00:00-02:30 Shinagawa (Tokyo)
