Gordon Messmer writes:
On 12/18/2017 05:52 AM, Sam Varshavchik wrote:Time IP addresses ======== ================== 08:35:34 08:35:35 192.168.0.1At 08:35:34 the server had no IP addressesWell, it probably had 127.0.0.1, which brings into question what the complete state of the network was.Could you arrange to execute "ip addr show | logger" in your unfrak script? That way we get all of the interfaces and all of the addresses regardless of family.Could you also see if removing the "-s" flag from /usr/lib/systemd/system/NetworkManager-wait-online.service changes the behavior of the system?
Running just "ip addr show | logger" was not conclusive. Looks like the overhead of doing so delays things long enough so even the first time this actually runs all the network interfaces have their IP addresses already assigned.
Removing the -s option from actually makes things worse. The script has to wait noticably longer before all IP addresses are assigned:
Subject: systemd network initialization unfrak report Time IP addresses ======== ================== 06:52:56 06:52:57 06:52:58 06:52:59 192.168.0.1 Usually it's 1 or 2 seconds. Without the -s option it's 4-5 seconds.This seems consistent with the description of what the -s option does, from the man page. The way I parse its man page entry is that the -s option actually waits for more things to happen, before it's done. So removing that option makes NetworkManager's definition of when things are online occur much earlier.
This is confirmed by running "ip addr show | logger" without -s option. This produces some useful results. This time, the first time "ip addr show" runs it's early enough so that the network is not fully initialized.
syslog shows two runs of "ip addr show", showing no IP addresses configured on one of the two network interfaces. The 2nd network interface already has its IP addresses assigned. This is followed by some messages from NetworkManager, then another run of "ip addr show", showing all network interfaces with assigned IP addresses.
Both eno1 and eno2 have statically assigned IP addresses in /etc/sysconfig/network-scripts.
Dec 19 06:57:09 shorty systemd[1]: Starting Unfrak systemd network startup... Dec 19 06:57:09 shorty systemd[1]: iscsi.service: Unit cannot be reloaded because it is inactive. Dec 19 06:57:09 shorty root[1400]: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 Dec 19 06:57:09 shorty root[1400]: link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 Dec 19 06:57:09 shorty root[1400]: inet 127.0.0.1/8 scope host lo Dec 19 06:57:09 shorty root[1400]: valid_lft forever preferred_lft forever Dec 19 06:57:09 shorty root[1400]: inet6 ::1/128 scope host Dec 19 06:57:09 shorty root[1400]: valid_lft forever preferred_lft forever Dec 19 06:57:09 shorty root[1400]: 2: eno1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000 Dec 19 06:57:09 shorty root[1400]: link/ether 0c:c4:7a:32:c1:82 brd ff:ff:ff:ff:ff:ff Dec 19 06:57:09 shorty root[1400]: 3: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 Dec 19 06:57:09 shorty root[1400]: link/ether 0c:c4:7a:32:c1:83 brd ff:ff:ff:ff:ff:ff Dec 19 06:57:09 shorty root[1400]: inet 68.166.206.83/29 brd 68.166.206.87 scope global eno2 Dec 19 06:57:09 shorty root[1400]: valid_lft forever preferred_lft forever Dec 19 06:57:09 shorty root[1400]: inet 68.166.206.82/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:09 shorty root[1400]: valid_lft forever preferred_lft forever Dec 19 06:57:09 shorty root[1400]: inet 68.166.206.84/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:09 shorty root[1400]: valid_lft forever preferred_lft forever Dec 19 06:57:09 shorty root[1400]: inet 68.166.206.85/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:09 shorty root[1400]: valid_lft forever preferred_lft forever Dec 19 06:57:09 shorty root[1400]: inet 68.166.206.86/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:09 shorty root[1400]: valid_lft forever preferred_lft forever Dec 19 06:57:09 shorty root[1400]: inet6 fe80::ec4:7aff:fe32:c183/64 scope link tentative Dec 19 06:57:09 shorty root[1400]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty root[1403]: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 Dec 19 06:57:10 shorty root[1403]: link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 Dec 19 06:57:10 shorty root[1403]: inet 127.0.0.1/8 scope host lo Dec 19 06:57:10 shorty root[1403]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty root[1403]: inet6 ::1/128 scope host Dec 19 06:57:10 shorty root[1403]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty root[1403]: 2: eno1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000 Dec 19 06:57:10 shorty root[1403]: link/ether 0c:c4:7a:32:c1:82 brd ff:ff:ff:ff:ff:ff Dec 19 06:57:10 shorty root[1403]: 3: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 Dec 19 06:57:10 shorty root[1403]: link/ether 0c:c4:7a:32:c1:83 brd ff:ff:ff:ff:ff:ff Dec 19 06:57:10 shorty root[1403]: inet 68.166.206.83/29 brd 68.166.206.87 scope global eno2 Dec 19 06:57:10 shorty root[1403]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty root[1403]: inet 68.166.206.82/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:10 shorty root[1403]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty root[1403]: inet 68.166.206.84/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:10 shorty root[1403]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty root[1403]: inet 68.166.206.85/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:10 shorty root[1403]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty root[1403]: inet 68.166.206.86/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:10 shorty root[1403]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty root[1403]: inet6 fe80::ec4:7aff:fe32:c183/64 scope link tentative Dec 19 06:57:10 shorty root[1403]: valid_lft forever preferred_lft forever Dec 19 06:57:10 shorty systemd-networkd[955]: eno2: Gained IPv6LL Dec 19 06:57:10 shorty NetworkManager[956]: <info> [1513684630.6860] manager: startup complete Dec 19 06:57:11 shorty kernel: e1000e: eno1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: Rx/Tx Dec 19 06:57:11 shorty kernel: IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4385] device (eno1): link connected Dec 19 06:57:11 shorty systemd-networkd[955]: eno1: Gained carrier Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4390] device (eno1): state change: unavailable -> disconnected (reason 'carrier-changed', internal state 'managed') Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4396] policy: auto-activating connection 'lan0' Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4405] device (eno1): Activation: starting connection 'lan0' (d1a1ee90-f006-43bb-9cbf-175ad32f6565) Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4406] device (eno1): state change: disconnected -> prepare (reason 'none', internal state 'managed') Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4410] device (eno1): state change: prepare -> config (reason 'none', internal state 'managed') Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4436] device (eno1): state change: config -> ip-config (reason 'none', internal state 'managed') Dec 19 06:57:11 shorty named[1035]: listening on IPv4 interface eno1, 192.168.0.1#53 Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4464] device (eno1): state change: ip-config -> ip-check (reason 'none', internal state 'managed') Dec 19 06:57:11 shorty nm-dispatcher[990]: req:5 'pre-up' [eno1]: new request (1 scripts) Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4509] device (eno1): state change: ip-check -> secondaries (reason 'none', internal state 'managed') Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.4511] device (eno1): state change: secondaries -> activated (reason 'none', internal state 'managed') Dec 19 06:57:11 shorty root[1415]: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 Dec 19 06:57:11 shorty root[1415]: link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 Dec 19 06:57:11 shorty root[1415]: inet 127.0.0.1/8 scope host lo Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty root[1415]: inet6 ::1/128 scope host Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty root[1415]: 2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000 Dec 19 06:57:11 shorty root[1415]: link/ether 0c:c4:7a:32:c1:82 brd ff:ff:ff:ff:ff:ff Dec 19 06:57:11 shorty root[1415]: inet 192.168.0.1/24 brd 192.168.0.255 scope global eno1 Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty root[1415]: inet6 fe80::ec4:7aff:fe32:c182/64 scope link tentative Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty root[1415]: 3: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 Dec 19 06:57:11 shorty root[1415]: link/ether 0c:c4:7a:32:c1:83 brd ff:ff:ff:ff:ff:ff Dec 19 06:57:11 shorty root[1415]: inet 68.166.206.83/29 brd 68.166.206.87 scope global eno2 Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty root[1415]: inet 68.166.206.82/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty NetworkManager[956]: <info> [1513684631.5589] device (eno1): Activation: successful, device activated. Dec 19 06:57:11 shorty root[1415]: inet 68.166.206.84/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty root[1415]: inet 68.166.206.85/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty root[1415]: inet 68.166.206.86/29 brd 68.166.206.87 scope global secondary eno2 Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty root[1415]: inet6 fe80::ec4:7aff:fe32:c183/64 scope link Dec 19 06:57:11 shorty root[1415]: valid_lft forever preferred_lft forever Dec 19 06:57:11 shorty nm-dispatcher[990]: req:6 'up' [eno1]: new request (7 scripts) Dec 19 06:57:11 shorty systemd[1]: Started Unfrak systemd network startup.Note that "ip addr show" ran as part of the script that has a dependency on nm-line.
After reversing all changes, putting the -s option back in, and not running "ip addr", repeated boots shows the status quo being restored. The presence of the -s option reduces the additional time that the script needs to wait for all IP addresses to be assigned to 1 or 2 seconds. But it still has to wait, since nm-online -s -q returns too early.
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