* Defect 2082949: Handling Control Plane ACLs so that IPv4 rules and IPv6 rules are not added to the same ACL table
* Previous code review comments of coming up with functions for is_ipv4_rule and is_ipv6_rule is addressed and also raising Exceptions instead of simply aborting when the conflict occurs is handled
* Addressed code review comment to replace duplicate code with already existing functions
* removed raising Exception when rule conflict in Control plane ACLs are found
* added code to remove the rule_props if it is conflicting ACL table versioning rule
* addressed review comment to add ignoring rule in the error statement
Co-authored-by: Madhan Babu <madhan@arc-build-server.mtr.labs.mlnx>
`sonic_installer list` is a read-only command. Specify it as such in the sudoers file.
This will also ensure the new `show boot` command, which calls `sudo sonic_installer list` under the hood doesn't fail due to permissions.
* [sonic-buildimage] Changes to make network specific sysctl
common for both host and docker namespace (in multi-npu).
This change is triggered with issue found in multi-npu platforms
where in docker namespace
net.ipv6.conf.all.forwarding was 0 (should be 1) because of
which RS/RA message were triggered and link-local router were learnt.
Beside this there were some other sysctl.net.ipv6* params whose value
in docker namespace is not same as host namespace.
So to make we are always in sync in host and docker namespace
created common file that list all sysctl.net.* params and used
both by host and docker namespace. Any change will get applied
to both namespace.
Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>
* Address Review Comments and made sure to invoke augtool
only one and do string concatenation of all set commands
* Address Review Comments.
Add changes for syslog support for containers running in namespaces on multi ASIC platforms.
On Multi ASIC platforms
Rsyslog service is only running on the host. There is no rsyslog service running in each namespace.
On multi ASIC platforms the rsyslog service on the host will be listening on the docker0 ip address instead of loopback address.
The rsyslog.conf on the containers is modified to have omfwd target ip to be docker0 ipaddress instead of loopback ip
Signed-off-by: Arvindsrinivasan Lakshmi Narasimhan <arlakshm@microsoft.com>
- Ensure all features (services) are in the configured state when hostcfgd starts
- Better functionalization of code
- Also replace calls to deprecated `has_key()` method in `tacacs_server_handler()` and `tacacs_global_handler()` with `in` keyword.
This PR depends on https://github.com/Azure/sonic-utilities/pull/944, otherwise `config load_minigraph` will fail when trying to restart disabled services.
While migrating to SONiC 20181130, identified a couple of issues:
1. union-mount needs /host/machine.conf parameters for vendor specific checks : however, in case of migration, the /host/machine.conf is extracted from ONIE only in https://github.com/Azure/sonic-buildimage/blob/master/files/image_config/platform/rc.local#L127.
2. Since grub.cfg is updated to have net.ifnames=0 biosdevname=0, 70-persistent-net.rules changes are no longer required.
Don't limit iptables connection tracking to TCP protocol; allow connection tracking for all protocols. This allows services like NTP, which is UDP-based, to receive replies from an NTP server even if the port is blocked, as long as it is in reply to a request sent from the device itself.
Found another syncd timing issue related to clock going backwards.
To be safe disable the ntp long jump.
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
Fix hostcfgd so that changes to the "FEATURE" table in ConfigDB are properly handled. Three changes here:
1. Fix indenting such that the handling of each key actually occurs in the for key in status_data.keys(): loop
2. Add calls to sudo systemctl mask and sudo systemctl unmask as appropriate to ensure changes persist across reboots
3. Substitute returns with continues so that even if one service fails, we still try to handle the others
Note that the masking is persistent, even if the configuration is not saved. We may want to consider only calling systemctl enable/disable in hostcfgd when the DB table changes, and only call systemctl mask/unmask upon calling config save.
* Run fsck filesystem check support prior mounting filesystem
If the filesystem become non clean ("dirty"), SONiC does not run fsck to
repair and mark it as clean again.
This patch adds the functionality to run fsck on each boot, prior to the
filesystem being mounted. This allows the filesystem to be repaired if
needed.
Note that if the filesystem is maked as clean, fsck does nothing and simply
return so this is perfectly fine to call fsck every time prior to mount the
filesystem.
How to verify this patch (using bash):
Using an image without this patch:
Make the filesystem "dirty" (not clean)
[we are making the assumption that filesystem is stored in /dev/sda3 - Please adjust depending of the platform]
[do this only on a test platform!]
dd if=/dev/sda3 of=superblock bs=1 count=2048
printf "$(printf '\\x%02X' 2)" | dd of="superblock" bs=1 seek=1082 count=1 conv=notrunc &> /dev/null
dd of=/dev/sda3 if=superblock bs=1 count=2048
Verify that filesystem is not clean
tune2fs -l /dev/sda3 | grep "Filesystem state:"
reboot and verify that the filesystem is still not clean
Redo the same test with an image with this patch, and verify that at next reboot the filesystem is repaired and becomes clean.
fsck log is stored on syslog, using the string FSCK as markup.
I found that with IPv4Network types, calling list(ip_ntwrk.hosts()) is reliable. However, when doing the same with an IPv6Network, I found that the conversion to a list can hang indefinitely. This appears to me to be a bug in the ipaddress.IPv6Network implementation. However, I could not find any other reports on the web.
This patch changes the behavior to call next() on the ip_ntwrk.hosts() generator instead, which returns the IP address of the first host.
Since the introduction of VRF, interface-related tables in ConfigDB will have multiple entries, one of which only contains the interface name and no IP prefix. Thus, when iterating over the keys in the tables, we need to ignore the entries which do not contain IP prefixes.
Modified caclmgrd behavior to enhance control plane security as follows:
Upon starting or receiving notification of ACL table/rule changes in Config DB:
1. Add iptables/ip6tables commands to allow all incoming packets from established TCP sessions or new TCP sessions which are related to established TCP sessions
2. Add iptables/ip6tables commands to allow bidirectional ICMPv4 ping and traceroute
3. Add iptables/ip6tables commands to allow bidirectional ICMPv6 ping and traceroute
4. Add iptables/ip6tables commands to allow all incoming Neighbor Discovery Protocol (NDP) NS/NA/RS/RA messages
5. Add iptables/ip6tables commands to allow all incoming IPv4 DHCP packets
6. Add iptables/ip6tables commands to allow all incoming IPv6 DHCP packets
7. Add iptables/ip6tables commands to allow all incoming BGP traffic
8. Add iptables/ip6tables commands for all ACL rules for recognized services (currently SSH, SNMP, NTP)
9. For all services which we did not find configured ACL rules, add iptables/ip6tables commands to allow all incoming packets for those services (allows the device to accept SSH connections before the device is configured)
10. Add iptables rules to drop all packets destined for loopback interface IP addresses
11. Add iptables rules to drop all packets destined for management interface IP addresses
12. Add iptables rules to drop all packets destined for point-to-point interface IP addresses
13. Add iptables rules to drop all packets destined for our VLAN interface gateway IP addresses
14. Add iptables/ip6tables commands to allow all incoming packets with TTL of 0 or 1 (This allows the device to respond to tools like tcptraceroute)
15. If we found control plane ACLs in the configuration and applied them, we lastly add iptables/ip6tables commands to drop all other incoming packets
* [ntp] enable/disable NTP long jump according to reboot type
- Enable NTP long jump after cold reboot.
- Disable NTP long jump after warrm/fast reboot.
Signed-off-by: Ying Xie <ying.xie@microsoft.com>
* fix typo
* further refactoring
* use sonic-db-cli instead
* Changes to support config-setup service for multi-npu
platforms. For Multi-npu we are not supporting as of
now config initializtion and ZTP. It will support creating
config db from minigraph or using config db from previous
file system
Signed-off-by: Abhishek Dosi <abdosi@microsoft.com>
* Address Review Comments.
* Address Review comments
* Address Review Comments of using pyhton based config load_minigraph/
config save/config reload from shell scripts so that we don't duplicate
code. Also while running from shell we will skip stop/start services
done by those commands.
* Updated to use python command so no code duplication.
and then we load image and reboot even if there was existing
config_db.json we will look for DHCP Service. we should disbale
update_graph in such cases. This behaviour is silimar to what we have in
201811 image.
1. ebtables -t filter -A FORWARD -p 802_1Q --vlan-encap 0806 -j DROP
The ARP packet with vlan tag can't match the default rule.
Signed-off-by: wangshengjun <wangshengjun@asterfusion.com>
The one big bgp configuration template was splitted into chunks.
Currently we have three types of bgp neighbor peers:
general bgp peers. They are represented by CONFIG_DB::BGP_NEIGHBOR table entries
dynamic bgp peers. They are represented by CONFIG_DB::BGP_PEER_RANGE table entries
monitors bgp peers. They are represented by CONFIG_DB::BGP_MONITORS table entries
This PR introduces three templates for each peer type:
bgp policies: represent policieas that will be applied to the bgp peer-group (ip prefix-lists, route-maps, etc)
bgp peer-group: represent bgp peer group which has common configuration for the bgp peer type and uses bgp routing policy from the previous item
bgp peer-group instance: represent bgp configuration, which will be used to instatiate a bgp peer-group for the bgp peer-type. Usually this one is simple, consist of the referral to the bgp peer-group, bgp peer description and bgp peer ip address.
This PR redefined constant.yml file. Now this file has a setting for to use or don't use bgp_neighbor metadata. This file has more parameters for now, which are not used. They will be used in the next iteration of bgpcfgd.
Currently all tests have been disabled. I'm going to create next PR with the tests right after this PR is merged.
I'm going to introduce better bgpcfgd in a short time. It will include support of dynamic changes for the templates.
FIX:: #4231
Install kubeadm, which transparently installs kubelet & kubectl
As well download required Kubernetes images required to run as kubernetes node.
The kubelet service is intentionally kept in disabled state, as it would otherwise
continuously restart wasting resources, until join to master.
* Fix the CMD for the PROCESSSTATS entries so that
there is a space between the command name and the
arguments.
Signed-off-by: Garrick He <garrick_he@dell.com>
Instead of updating hostname manualy on Config DB hostname change,
simply share containers UTS namespace with host OS.
Ideally, instead of setting `--uts=host` for every container in SONiC,
this setting can be set per container if feature requires.
One behaviour change is introduced in this commit, when `--privileged`
or `--cap-add=CAP_SYS_ADMIN` and `--uts=host` are combined, container
has privilege to change host OS and every other container hostname.
Such privilege should be fixed by limiting containers capabilities.
Signed-off-by: Stepan Blyschak <stepanb@mellanox.com>
- What I did
Add configuration to avoid ntpd from panic and exit if the drift between new time and current system time is large.
- How I did it
Added "tinker panic 0" in ntp.conf file.
- How to verify it
[this assumes that there is a valid NTP server IP in config_db/ntp.conf]
Change the current system time to a bad time with a large drift from time in ntp server; drift should be greater than 1000s.
Reboot the device.
Before the fix:
3. upon reboot, ntp-config service comes up fine, ntp service goes to active(exited) state without any error message. This is because the offset between new time (from ntp server) and the current system time is very large, ntpd goes to panic mode and exits. The system continues to show the bad time.
After the fix:
3. Upon reboot, ntp-config comes up fine, ntp services comes up from and stays in active (running) state. The system clock gets synced with the ntp server time.
* ZTP infrastructure changes to support DHCP discovery provisioning data
- Dynamically generate DHCP client configuration based on current ZTP state
- Added support to request and process hostname when using DHCPv6
- Do not process graphservice url dhcp option if ZTP is enabled, ZTP service
will process it
- Generate /e/n/i file with all active interfaces seeking address assignment
via DHCP. Only interfaces that are created in Linux will be added to /e/n/i.
Also DHCP is started only on linked up in-band interfaces.
Signed-off-by: Rajendra Dendukuri <rajendra.dendukuri@broadcom.com>
* [MultiDB] (except ./src and ./dockers dirs): replace redis-cli with sonic-db-cli and use new DBConnector
* update comment for a potential bug
* update comment
* add TODO maker as review reqirement
- move single instance services into their own folder
- generate Systemd templates for any multi-instance service files in slave.mk
- detect single or multi-instance platform in systemd-sonic-generator based on asic.conf platform specific file.
- update container hostname after creation instead of during creation (docker_image_ctl)
- run Docker containers in a network namespace if specified
- add a service to create a simulated multi-ASIC topology on the virtual switch platform
Signed-off-by: Lawrence Lee <t-lale@microsoft.com>
Signed-off-by: Suvarna Meenakshi <Suvarna.Meenaksh@microsoft.com>
* Changes in sonic-buildimage for the NAT feature
- Docker for NAT
- installing the required tools iptables and conntrack for nat
Signed-off-by: kiran.kella@broadcom.com
* Add redis-tools dependencies in the docker nat compilation
* Addressed review comments
* add natsyncd to warm-boot finalizer list
* addressed review comments
* using swsscommon.DBConnector instead of swsssdk.SonicV2Connector
* Enable NAT application in docker-sonic-vs
* [Monit] Change the monitoring period of monit from 120 seconds to 60
seconds and also at the same time double the interval for existing sonic monit config file in
host.
Signed-off-by: Yong Zhao <yozhao@microsoft.com>
